WO2025037477A1 - Coloring composition, film, color filter, solid state imaging device, image display device, and compound - Google Patents

Abstract

Provided are: a coloring composition that contains a coloring agent represented by formula 1, a resin and a solvent; a film; a color filter; a solid state imaging device; an image display device; and a compound. In formula 1, A and B are each independently an at least 5-membered monocyclic structure or polycyclic structure, L¹ is an n-valent linking group, and n is an integer of 2 or more.

Description

Coloring composition, film, color filter, solid-state imaging device, image display device, and compound

The present disclosure relates to a coloring composition, a film, a color filter, a solid-state imaging device, an image display device, and a compound.

Colorants are used in optical filters such as color filters. Traditionally, colorants with different characteristics have been developed for different purposes.

For example, JP-A-52-083363 describes a yellowish orange pigment having an isoindoline skeleton and an indandione acid nucleus. JP-A-52-083363 also describes that the yellowish orange pigment is a vivid yellowish orange pigment that has light resistance.

JP 2020-26503 A describes a pigment having an isoindoline skeleton and a barbituric acid nucleus. JP 2020-26503 A describes that the pigment can form a coating having excellent heat resistance and light resistance, can produce a composition with good storage stability, and can be used in color filters.

However, so far there is no knowledge of a composition that can produce a color filter that not only has excellent color value, but also has high heat resistance and low thermal diffusion to other pixels.

The present disclosure has been made in consideration of the above, and provides a coloring composition, a film, a color filter, a solid-state imaging device, an image display device, and a compound that can provide a color filter that has high heat resistance and low thermal diffusion to other pixels.

Specific means for solving the above problems include the following aspects.
<1> A coloring composition comprising a colorant represented by the following formula 1, a resin, and a solvent:

In formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.
<2> The coloring composition according to <1>, wherein in formula 1, n is 2 or 3.
<3> The coloring composition according to <1> or <2>, in formula 1, A and B each represent a 6-membered monocyclic structure.
<4> The colored composition according to any one of <1> to <3>, in formula 1, L ¹ is a divalent linking group having 2 to 15 carbon atoms.
<5> The colored composition according to any one of <1> to <4>, further comprising at least one of a photopolymerization initiator and a polymerizable compound.
<6> The colored composition according to any one of <1> to <5>, further comprising at least one of a green colorant and a red colorant.
<7> A film obtained by curing the colored composition according to any one of <1> to <6>.
<8> A color filter having the film according to <7>.
<9> A solid-state imaging device having the film according to <7>.
<10> An image display device having the film according to <7>.
<11> A compound represented by the following formula 1:

In formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.

The present disclosure provides a coloring composition, a film, a color filter, a solid-state imaging device, an image display device, and a compound that can provide a color filter that has high heat resistance and low thermal diffusion to other pixels.

The contents of the present disclosure will be described in detail below. The following description of the components may be based on a representative embodiment of the present disclosure, but the present disclosure is not limited to such an embodiment.
In the present disclosure, the word "to" is used to mean that the numerical values before and after it are included as the lower limit and upper limit.
In the present disclosure, the upper or lower limit of one numerical range may be replaced with the upper or lower limit of another numerical range. In addition, in the numerical ranges described in the present disclosure, the upper or lower limit of the numerical range may be replaced with a value shown in the examples.
In the present disclosure, when a composition contains multiple substances corresponding to each component, the content of each component in the composition means the total content of the multiple substances present in the composition, unless otherwise specified.
In the description of groups (atomic groups) in the present disclosure, descriptions that do not indicate whether they are substituted or unsubstituted include groups (atomic groups) that have no substituents as well as groups (atomic groups) that have a substituent. For example, an "alkyl group" includes not only an alkyl group that has no substituents (unsubstituted alkyl groups) but also an alkyl group that has a substituent (substituted alkyl group).
In the present disclosure, unless otherwise specified, the term "exposure" includes not only exposure using light but also drawing using particle beams such as electron beams and ion beams. Examples of light used for exposure include the bright line spectrum of a mercury lamp, far ultraviolet light represented by an excimer laser, extreme ultraviolet light (EUV light), X-rays, active rays or radiation such as electron beams.
In the present disclosure, "(meth)acrylate" refers to both or either of acrylate and methacrylate, "(meth)acrylic" refers to both or either of acrylic and methacrylic, and "(meth)acryloyl" refers to both or either of acryloyl and methacryloyl.
In the present disclosure, the weight average molecular weight and the number average molecular weight are values calculated in terms of polystyrene measured by a GPC (gel permeation chromatography) method.
In this disclosure, total solids refers to the total mass of all components of a composition excluding the solvent.
In this disclosure, a pigment means a colorant that is poorly soluble in a solvent.
In the present disclosure, the term "step" refers not only to an independent step, but also to a step that cannot be clearly distinguished from other steps, as long as the intended effect of the step is achieved.
In the present disclosure, for oxime compounds having E- and Z-stereoisomers, unless otherwise specified, either the E- or Z-isomer may be used.

<Coloring composition>
The coloring composition of the present disclosure contains a colorant represented by the following formula 1, a resin, and a solvent.

In formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.

The colored composition of the present disclosure contains a colorant represented by the above formula 1, a resin, and a solvent, and thus a color filter having high heat resistance and low thermal diffusivity to other pixels can be obtained.
Although the action of the coloring composition of the present disclosure is not clear, it is presumed to be as follows.
The colorant represented by formula 1 contains a five-membered ring containing a nitrogen atom and a cyclic structure A (i.e., a monocyclic structure or polycyclic structure having five or more members represented by A) adjacent to the five-membered ring, and this structure gives the colorant a yellow color.
Furthermore, the colorant represented by Formula 1 contains a five-membered ring having two oxygen atoms and a cyclic structure B adjacent to the five-membered ring (i.e., a monocyclic structure or polycyclic structure having five or more members represented by B), and due to this structure, the colorant has excellent color value.
On the other hand, the colorant having the cyclic structures A and B of the present disclosure, described in JP-A-52-083363, does not have sufficient heat resistance and has a problem with thermal diffusion to other pixels. It is presumed that the colorant of the present disclosure has many substituents capable of hydrogen bonding in addition to the cyclic structures A and B, and thus forms an association in which intermolecular interactions due to hydrogen bonds or the like act strongly. In other words, the colorant that has become an association is stable against heat, and therefore a color filter having high heat resistance and low thermal diffusion to other pixels can be obtained by using a coloring composition containing the colorant of the present disclosure.
It should be noted that the present disclosure is in no way limited to the above presumed mechanism.

<Coloring Agent>
In the present disclosure, the coloring composition includes a colorant represented by the following formula 1:

In the above formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.

(L ¹ : n-valent linking group)
From the viewpoint of ease of synthesis of the colorant and the formability of a hydrogen bond network, n in the above formula 1 is preferably an integer of 2 to 5, more preferably 2 or 3, and even more preferably 2.

From the viewpoint of high heat resistance and low thermal diffusion to other pixels, in the above formula 1, L ¹ is preferably a divalent to pentavalent linking group having 2 to 15 atoms in the main chain, more preferably a divalent or trivalent linking group having 2 to 15 atoms in the main chain, even more preferably a divalent linking group having 2 to 15 atoms in the main chain, and particularly preferably a divalent linking group having 2 to 15 carbon atoms in the main chain. In the above formula 1, L ¹ is also preferably a divalent linking group having 2 to 15 carbon atoms. Here, the number of atoms in the main chain refers to the number of atoms constituting the main chain. For example, the number of atoms in the main chain in the oxyethylene unit "-CH ₂ -CH ₂ -O-" is 3.

From the viewpoint of intramolecular hydrogen bond network formation and thermal diffusivity, the number of atoms in the main chain of ^L1 in the above formula 1 is preferably 2 to 15, more preferably 2 to 10, even more preferably 3 to 7, and particularly preferably 3 to 5. When the number of atoms in the main chain is 2 or more, a hydrogen bond network is easily formed in the colorant molecule, and high heat resistance is easily exhibited. When the number of atoms in the main chain is 15 or less, the degree of freedom of the linking group does not increase too much, the solubility of the colorant molecule does not increase too much, and thermal diffusivity to other pixels is unlikely to be obtained.
When L ¹ is a trivalent linking group, the main chain of L ¹ preferably has 2-20 atoms, more preferably 3-15 atoms, further preferably 4-10 atoms, and particularly preferably 5-7 atoms.
From the viewpoint of forming a network of hydrogen bonds within a molecule, it is more important to specify the number of atoms in the main chain ^{of L1} (i.e., the length of the main chain of ^L1 ) than to specify the type of atoms constituting L1 in the above formula 1.

The type of atoms in the main chain of ^L1 is not particularly limited, and may include, for example, carbon, nitrogen, oxygen, silicon, or sulfur. The atoms in the main chain of ^L1 may be, for example, only carbon atoms. The type of atoms in the main chain of ^L1 may be only one type, or two or more types.

L ¹ is preferably a divalent linking group or a trivalent linking group, more preferably a divalent linking group.
When L ¹ is a divalent linking group, examples of L ¹ include an alkylene group (preferably an alkylene group having 2 to 15 carbon atoms), an arylene group (preferably an arylene group having 6 to 20 carbon atoms), -NH-, -SO-, -SO ₂ -, -CO-, -O-, -COO-, -OCO-, -S-, and a group formed by combining two or more of these. The alkylene group may be linear, branched, or cyclic, and is preferably linear or branched, more preferably linear, from the viewpoint of intramolecular hydrogen bond network formation, solubility, and thermal diffusivity. The alkylene group may have a substituent or may be unsubstituted. Examples of the substituent include a hydroxy group and an alkoxy group. Examples of the branched side chain include an alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group, etc.).

When L ¹ is a trivalent linking group, examples of L ¹ include =CH-, -N=, a trivalent alkylene group (preferably a trivalent alkylene group having 2 to 15 carbon atoms), a trivalent arylene group (preferably a trivalent arylene group having 6 to 20 carbon atoms), and a group formed by combining two or more of these. The alkylene group may be linear, branched, or cyclic, and is preferably linear or branched, more preferably linear, from the viewpoint of intramolecular hydrogen bond network formation, solubility, and thermal diffusibility. The alkylene group may have a substituent or may be unsubstituted. Examples of the substituent include a hydroxy group and an alkoxy group. Examples of the branched side chain include an alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group, etc.).

Preferred specific examples of L ¹ are shown below, but L ¹ is not limited thereto. In addition, * indicates the bonding position with the nitrogen atom of the amide group in formula 1.

From the viewpoints of intramolecular hydrogen bond network formation, solubility, and thermal diffusivity, L ¹ is preferably a linking group selected from the group consisting of L ¹ -1 to L ¹ -17, more preferably L ¹ -2, L ¹ -3, L ¹ -4, L ¹ -5, L ¹ -6, L ¹ -10, or L ¹ -17, and further preferably L ¹ -3.

(A: cyclic structure)
In the above formula 1, A represents a monocyclic structure or a polycyclic structure having 5 or more members, and A is preferably a monocyclic structure having 6 members.

The five- or more-membered monocyclic structure may be either a monocyclic carbocycle or a monocyclic heterocycle. Examples of heteroatoms constituting the heterocycle include a nitrogen atom, an oxygen atom, and a sulfur atom. The five- or more-membered monocyclic structure may be a five- or six-membered aromatic carbocycle, a five- or six-membered aromatic heterocycle, a five- or six-membered aliphatic carbocycle, or a five- or six-membered aliphatic heterocycle, and is preferably a six-membered aromatic carbocycle.

Specific examples of the 5- or higher-membered monocyclic carbocyclic ring include a cyclopentane ring, a cyclopentene ring, a cyclohexane ring, a cyclohexene ring, a 1,3-cyclohexadiene ring, a 1,4-cyclohexadiene ring, and a benzene ring, with a benzene ring being preferred.
Specific examples of the 5- or more-membered monocyclic heterocycle include a pyrrolidine ring, a piperidine ring, a piperazine ring, a morpholine ring, a lactone ring, a lactam ring, a pyrrole ring, a furan ring, a thiophene ring, an imidazole ring, a pyrazole ring, an oxazole ring, an isoxazole ring, a thiazole ring, an isothiazole ring, a pyridine ring, a pyrimidine ring, a pyridazine ring, a pyrazine ring, a pyrrole ring, a pyrazole ring, a furan ring, a thiophene ring, and a 1,2,3-triazine ring, and preferably a pyrazine ring or an imidazole ring.

The polycyclic structure may be a structure consisting of a plurality of 5-membered aromatic carbon rings, a structure consisting of a plurality of 6-membered aromatic carbon rings, or a structure in which a 5-membered aromatic carbon ring and a 6-membered aromatic carbon ring are combined.
Specific examples of the polycyclic structure include a naphthalene ring, an anthracene ring, a tetracene ring, a pentacene ring, a pyrene ring, and a phenanthrene ring, and preferably a naphthalene ring.
The polycyclic structure may be a heterocycle, and examples of heteroatoms constituting the heterocycle include a nitrogen atom, an oxygen atom, and a sulfur atom. Examples of the polycyclic heterocycle include a quinoline ring, an isoquinoline ring, a quinazoline ring, a phthalazine ring, a pteridine ring, a coumarin ring, a chromone ring, an indole ring, a benzimidazole ring, a benzofuran ring, a purine ring, an acridine ring, a phenoxazine ring, and a phenothiazine ring.

The five or more membered monocyclic structure and polycyclic structure may have a substituent. When the monocyclic structure or polycyclic structure has a plurality of substituents, the plurality of substituents may be the same or different.
Examples of the substituent include a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a cyano group, _-NO2 , _-SO3H , -N( _Ra ) ₂ , _-SRa , -COOH, _-ORa , _-O - _CORc , _-O -CO- _ORc , -CONRaRb, -NRa _- CO- _Rb , _-O - _CO -NRaRb, -NRa _{- CO} - _ORb , -NRa _{-CO-NRaRb, -SO-Rc, -SO2-Rc, -O-SO2-Rc , -SO2 - NRaRb , -NRa - SO2 - Ra ,} -CO-NRa _{- CORb .} , -CO-NR _a -SO ₂ -R _b , -SO ₂ -NR _a -CO-R _b , -SO ₂ -NR _a -SO ₂ -R _c , -Si(R _a ) _L (OR _b ) _K , a heterocyclic group, and -O(R _d O) _J -R _a . Here, R _a and R _b each independently represent a hydrogen atom, an alkyl group, an aryl group, or a heteroaryl group, R _c represents an alkyl group, an aryl group, or a heteroaryl group, R _d each independently represent an alkylene group, an arylene group, or a group combining two or more of these, L and K each independently represent an integer of 0 to 3, satisfying L + K = 3, and J represents an integer of 1 to 100.

Furthermore, the substituent may be a group represented by -R _e -R _d , where R _e is a group formed by combining two or more selected from =C=, -N=, =Si=, an alkylene group (for example, an alkylene group having 2 to 15 carbon atoms), an arylene group (for example, an arylene group having 6 to 20 carbon atoms), -NH-, -SO-, -SO ₂ -, -CO-, -O-, -COO-, -OCO-, and -S-, and R _d is a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a cyano group.

The halogen atom is preferably a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, and more preferably a fluorine atom or a chlorine atom.
The alkyl group is preferably a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, an isobutyl group, or a tert-butyl group.
The alkenyl group is preferably a vinyl group, a 1-propenyl group, a 2-butenyl group, or a 3-butenyl group.
The alkynyl group is preferably an ethynyl group, a 1-propynyl group, a 2-propynyl group, a 2-butynyl group, or a 3-butynyl group.
The aryl group is preferably a phenyl group, a naphthyl group, or a fluorenyl group.
The heteroaryl group is preferably a thienyl group, a furyl group, a pyrrolyl group, an imidazolyl group, a thiazolyl group, or a pyridyl group.
The alkylene group is preferably a methylene group, an ethylene group, a propylene group, or a butylene group.
The arylene group is preferably a group in which two hydrogen atoms directly bonded to carbon atoms constituting the ring have been removed from benzene, naphthalene or fluorene.

Preferred specific examples of the five-membered ring containing a nitrogen atom and the ring structure A adjacent to the five-membered ring are shown below. However, the chemical structures of the five-membered ring containing a nitrogen atom and the ring structure A adjacent to the five-membered ring are not limited to these. Note that * represents the bonding position with the carbon atom to which the cyano group in formula 1 is bonded, or the bonding position with the five-membered ring having two oxygen atoms adjacent to ring structure B in formula 1. There is no particular limitation as to whether * represents the bonding position with the carbon atom to which the cyano group in formula 1 is bonded, or the bonding position with the five-membered ring having two oxygen atoms adjacent to ring structure B in formula 1.

From the viewpoints of intramolecular hydrogen bond network formation, solubility, and thermal diffusivity, the five-membered ring containing a nitrogen atom and the ring structure A adjacent to the five-membered ring are preferably chemical structures selected from the group consisting of A-1 to A-9, more preferably chemical structures selected from the group consisting of A-1 to A-5 and A-7 to A-9, and even more preferably A-1 or A-2.

(B: cyclic structure)
In the above formula 1, B represents a monocyclic structure or a polycyclic structure having 5 or more members, and B is preferably a monocyclic structure having 6 members.

The five- or more-membered monocyclic structure may be either a monocyclic carbocycle or a monocyclic heterocycle. Examples of heteroatoms constituting the heterocycle include a nitrogen atom, an oxygen atom, and a sulfur atom. The five- or more-membered monocyclic structure may be a five- or six-membered aromatic carbocycle, a five- or six-membered aromatic heterocycle, a five- or six-membered aliphatic carbocycle, or a five- or six-membered aliphatic heterocycle, and is preferably a six-membered aromatic carbocycle.

Specific examples of the 5- or higher-membered monocyclic carbocyclic ring include a cyclopentane ring, a cyclopentene ring, a cyclohexane ring, a cyclohexene ring, a 1,3-cyclohexadiene ring, a 1,4-cyclohexadiene ring, and a benzene ring, with a benzene ring being preferred.
Examples of the 5- or more-membered monocyclic heterocycle include a pyrrolidine ring, a piperidine ring, a piperazine ring, a morpholine ring, a lactone ring, a lactam ring, a pyrrole ring, a furan ring, a thiophene ring, an imidazole ring, a pyrazole ring, an oxazole ring, an isoxazole ring, a thiazole ring, an isothiazole ring, a pyridine ring, a pyrimidine ring, a pyridazine ring, a pyrazine ring, a pyrrole ring, a pyrazole ring, a furan ring, a thiophene ring, and a 1,2,3-triazine ring, and preferably a pyrazine ring or a thiophene ring.

The polycyclic structure may be a structure consisting of a plurality of 5-membered aromatic carbon rings, a structure consisting of a plurality of 6-membered aromatic carbon rings, or a structure in which a 5-membered aromatic carbon ring and a 6-membered aromatic carbon ring are combined.
Specific examples of the polycyclic structure include a naphthalene ring, an anthracene ring, a tetracene ring, a pentacene ring, a pyrene ring, and a phenanthrene ring, and preferably a naphthalene ring.
The polycyclic structure may be a heterocycle, and examples of heteroatoms constituting the heterocycle include a nitrogen atom, an oxygen atom, and a sulfur atom. Examples of the polycyclic heterocycle include a quinoline ring, an isoquinoline ring, a quinazoline ring, a phthalazine ring, a pteridine ring, a coumarin ring, a chromone ring, an indole ring, a benzimidazole ring, a benzofuran ring, a purine ring, an acridine ring, a phenoxazine ring, and a phenothiazine ring.

The five or more membered monocyclic structure and polycyclic structure may have a substituent. When the monocyclic structure or polycyclic structure has a plurality of substituents, the plurality of substituents may be the same or different.
Examples of the substituent include a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a cyano group, _-NO2 , _-SO3H , -N( _Ra ) ₂ , _-SRa , -COOH, _-ORa , -O- _CORc , _-O -CO _{-ORc ,} -CONRaRb, -NRa _- CO- _Rb , _-O - _CO -NRaRb, -NRa _{- CO} - _ORb , -NRa _{-CO-NRaRb, -SO-Rc, -SO2-Rc, -O-SO2-Rc , -SO2 - NRaRb , -NRa - SO2 - Ra ,} -CO-NRa _{- CORb .} , -CO-NR _a -SO ₂ -R _b , -SO ₂ -NR _a -CO-R _b , -SO ₂ -NR _a -SO ₂ -R _c , -Si(R _a ) _L (OR _b ) _K , a heterocyclic group, and -O(R _d O) _J -R _a . Here, R _a and R _b each independently represent a hydrogen atom, an alkyl group, an aryl group, or a heteroaryl group, R _c represents an alkyl group, an aryl group, or a heteroaryl group, R _d each independently represent an alkylene group, an arylene group, or a group combining two or more of these, L and K each independently represent an integer of 0 to 3, satisfying L + K = 3, and J represents an integer of 1 to 100.

Furthermore, the substituent may be a group represented by -R _e -R _d , where R _e is a group formed by combining two or more selected from =C=, -N=, =Si=, an alkylene group (for example, an alkylene group having 2 to 15 carbon atoms), an arylene group (for example, an arylene group having 6 to 20 carbon atoms), -NH-, -SO-, -SO ₂ -, -CO-, -O-, -COO-, -OCO-, and -S-, and R _d is a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a cyano group.

The halogen atom is preferably a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, more preferably a fluorine atom or a chlorine atom.
The alkyl group is preferably a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, an isobutyl group, or a tert-butyl group.
The alkenyl group is preferably a vinyl group, a 1-propenyl group, a 2-butenyl group, or a 3-butenyl group.
The alkynyl group is preferably an ethynyl group, a 1-propynyl group, a 2-propynyl group, a 2-butynyl group, or a 3-butynyl group.
The aryl group is preferably a phenyl group, a naphthyl group, or a fluorenyl group.
The heteroaryl group is preferably a thienyl group, a furyl group, a pyrrolyl group, an imidazolyl group, a thiazolyl group, or a pyridyl group.
The alkylene group is preferably a methylene group, an ethylene group, a propylene group, or a butylene group.
The arylene group is preferably a group in which two hydrogen atoms directly bonded to carbon atoms constituting the ring have been removed from benzene, naphthalene or fluorene.

Preferred specific examples of the five-membered ring having two oxygen atoms and the ring structure B adjacent to the five-membered ring are shown below. However, the chemical structures of the five-membered ring having two oxygen atoms and the ring structure B adjacent to the five-membered ring are not limited to these. Note that * indicates the bonding position with the five-membered ring containing the nitrogen atom in formula 1.

From the viewpoints of intramolecular hydrogen bond network formation, solubility, thermal diffusivity, and color value, the five-membered ring having two oxygen atoms and the ring structure B adjacent to the five-membered ring are preferably chemical structures selected from the group consisting of B-1 to B-9, and more preferably B-1 or B-2.

All of the above combinations of n values, L ¹ -1 to L ¹ -17, A-1 to A-9, and B-1 to B-9 are preferably used as the colorant of the present disclosure. More preferred specific examples of the colorant represented by formula 1 of the present disclosure are shown below. However, the colorant of the present disclosure is not limited to these.

The content of the colorant represented by Formula 1 is preferably 0.01% by mass to 90% by mass, more preferably 0.1% by mass to 80% by mass, still more preferably 10% by mass to 75% by mass, and particularly preferably 30% by mass to 70% by mass, based on the total solid content of the coloring composition, from the viewpoint of color value.
The coloring composition of the present disclosure may contain one type alone or two or more types of colorants represented by the above formula 1. When the coloring composition of the present disclosure contains two or more types of colorants represented by the above formula 1, it is preferable that the total amount thereof is within the above range.

The molecular weight of the colorant disclosed herein is not particularly limited, but is preferably 300 to 10,000, more preferably 400 to 5,000, and even more preferably 500 to 3,000.

The colorant of the present disclosure preferably has a maximum absorption wavelength in the wavelength range of 400 nm to 700 nm, and more preferably has a maximum absorption wavelength in the wavelength range of 400 nm to 550 nm.

The colorant of the present disclosure is preferably a pigment. The average primary particle diameter of the pigment is preferably 1 nm to 200 nm. The lower limit is more preferably 5 nm or more, and even more preferably 10 nm or more. The upper limit is more preferably 180 nm or less, even more preferably 150 nm or less, and particularly preferably 100 nm or less. In the present disclosure, the primary particle diameter of the pigment can be determined from an image photograph obtained by observing the primary particles of the pigment with a transmission electron microscope. Specifically, the projected area of the primary particles of the pigment is determined, and the corresponding circle equivalent diameter is calculated as the primary particle diameter of the pigment. In the present disclosure, the average primary particle diameter is the arithmetic mean value of the primary particle diameters of 400 primary particles of the pigment. In addition, the primary particles of the pigment refer to independent particles without aggregation.
The crystallite size of the pigment, determined from the half-width of a peak derived from any crystal plane in an X-ray diffraction spectrum obtained using CuKα rays as an X-ray source, is preferably 0.1 nm to 100 nm, more preferably 0.5 nm to 50 nm, even more preferably 1 nm to 30 nm, and particularly preferably 5 nm to 25 nm.

<Other colorants>
The coloring composition of the present disclosure may further contain one or more colorants other than the colorant represented by Formula 1 above.
Other colorants include chromatic colorants and black colorants. Chromatic colorants include colorants having a maximum absorption wavelength in the wavelength range of 400 nm to 700 nm. For example, green colorants, red colorants, yellow colorants, purple colorants, blue colorants, orange colorants, etc. The coloring composition of the present disclosure preferably contains at least one of a green colorant and a red colorant.
The other colorants may be pigments or dyes.
From the viewpoints of coloring property and dispersibility, the other colorant is preferably at least one pigment selected from the group consisting of a diketopyrrolopyrrole pigment, a quinacridone pigment, an anthraquinone pigment, a perylene pigment, a phthalocyanine pigment, an isoindoline pigment, a quinophthalone pigment, and an azomethine pigment.
As another colorant, a black pigment can be used, which is a pigment containing one or more atoms selected from carbon black, titanium atoms, and zirconium atoms.

The average primary particle diameter of the pigment is preferably 1 nm to 200 nm. The lower limit is more preferably 5 nm or more, and even more preferably 10 nm or more. The upper limit is more preferably 180 nm or less, even more preferably 150 nm or less, and particularly preferably 100 nm or less. In the present disclosure, the primary particle diameter of the pigment can be determined from an image photograph obtained by observing the primary particles of the pigment with a transmission electron microscope. Specifically, the projected area of the primary particles of the pigment is determined, and the corresponding circle equivalent diameter is calculated as the primary particle diameter of the pigment. In the present disclosure, the average primary particle diameter is the arithmetic average value of the primary particle diameters of 400 primary particles of the pigment. In addition, the primary particles of the pigment refer to independent particles without aggregation.
The crystallite size of the pigment, determined from the half-width of a peak derived from any crystal plane in an X-ray diffraction spectrum obtained using CuKα rays as an X-ray source, is preferably 0.1 nm to 100 nm, more preferably 0.5 nm to 50 nm, even more preferably 1 nm to 30 nm, and particularly preferably 5 nm to 25 nm.

The coloring composition of the present disclosure may contain a green colorant.
Examples of green colorants include phthalocyanine compounds (e.g., copper phthalocyanine compounds and zinc phthalocyanine compounds) and squarylium compounds, and are preferably phthalocyanine compounds. The green colorant is preferably a pigment. Specific examples of green colorants include C.I. PG (Color Index Pigment Green) 7, 10, 36, 37, 58, 59, 62, 63 (e.g., PG63-1 described in JP-A-2018-141894), 64, 65, 66, and green pigments such as G1. In addition, as green colorants, compounds described in paragraphs 0143 to 0149 of WO 2022/085485, aluminum phthalocyanine compounds described in JP-A-2020-070426, diarylmethane compounds described in JP-T-2020-504758, and the like can also be used.

Preferred green colorants are C.I. PG36 (copper phthalocyanine compound), 58 (zinc phthalocyanine compound), 63 (e.g. PG63-1 described in JP2018-141894A), and G1. The chemical structure of G1 is as follows:

The coloring composition of the present disclosure may contain a red colorant.
Examples of the red colorant include a diketopyrrolopyrrole compound, an anthraquinone compound, an azo compound, a naphthol compound, an azomethine compound, a xanthene compound, a quinacridone compound, a perylene compound, and a thioindigo compound. Of these, a diketopyrrolopyrrole compound, an anthraquinone compound, a quinacridone compound, or a perylene compound is preferable. The red colorant is preferably a pigment. Specific examples of the red colorant include those listed in the C.I.PR (Color Index) standard. Pigment Red) 1, 2, 3, 4, 5, 6, 7, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48: 1, 48: 2, 48: 3, 48: 4, 49, 49: 1, 49: 2, 52: 1, 52: 2, 53: 1, 57: 1, 60: 1, 63: 1, 66, 67, 81: 1, 81: 2, 81: 3, 83, 88, 90, 105, 112, 119, 122, 123, 144, 146, 149, 150, 1 Examples of red pigments include 55,166,168,169,170,171,172,175,176,177,178,179,184,185,187,188,190,200,202,206,207,208,209,210,216,220,224,226,242,246,254,255,264,269,270,272,279,291,294,295,296,297. In addition, the compound described in paragraph 0034 of WO 2022/085485 can also be used as a red colorant.
As a red colorant, Lumogen F Orange 240 (manufactured by BASF, red pigment, perylene pigment) can also be used.

The red colorant is preferably C.I. PR122 (quinacridone compound), 177 (anthraquinone compound), 224 (perylene compound), 254 (diketopyrrolopyrrole compound), 264 (diketopyrrolopyrrole compound), or 272 (diketopyrrolopyrrole compound).

Examples of the yellow colorant include an azo compound, an azomethine compound, an isoindoline compound, a pteridine compound, a quinophthalone compound, and a perylene compound. The yellow colorant is preferably a pigment, and is preferably a quinophthalone compound, an azomethine compound, or an isoindoline compound. Specific examples of the yellow colorant include C.I.PY (Color Index) pigments. Pigment Yellow) 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35:1, 36, 36:1, 37, 37:1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 12 5, 126, 127, 128, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 199, 213, 214, 215, 228, 231, 232, 233, 234, 235, 236 and the like.
Furthermore, as a yellow colorant, an azobarbituric acid nickel complex having the following structure can also be used.

In addition, the compounds described in paragraphs 0031 to 0033 of WO 2022/085485 can also be used as yellow colorants.

Preferred yellow colorants are C.I. PY129 (azomethine compound), 138 (quinophthalone compound), and 185 (isoindoline compound).

Orange colorants include orange pigments such as C.I. Pigment Orange 2, 5, 13, 16, 17:1, 31, 34, 36, 38, 43, 46, 48, 49, 51, 52, 55, 59, 60, 61, 62, 64, 71, and 73.

Examples of purple colorants include purple pigments such as C.I. Pigment Violet 1, 19, 23, 27, 32, 37, 42, 60, and 61.

Examples of blue colorants include C.I. Pigment Blue 1, 2, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 22, 29, 60, 64, 66, 79, 80, 87, and 88. Aluminum phthalocyanine compounds having phosphorus atoms can also be used as blue colorants. Specific examples include the compounds described in paragraphs 0022 to 0030 of JP-A No. 2012-247591 and paragraph 0047 of JP-A No. 2011-157478.

Dyes can also be used as chromatic colorants. There are no particular limitations on the dyes, and any known dyes can be used. Examples include pyrazole azo dyes, anilino azo dyes, triarylmethane dyes, anthraquinone dyes, anthrapyridone dyes, benzylidene dyes, oxonol dyes, pyrazolotriazole azo dyes, pyridone azo dyes, cyanine dyes, phenothiazine dyes, pyrrolopyrazole azomethine dyes, xanthene dyes, phthalocyanine dyes, benzopyran dyes, indigo dyes, and pyrromethene dyes.

　A dye polymer can also be used as the chromatic colorant. The dye polymer is preferably a dye dissolved in an organic solvent before use. The dye polymer may also form particles. When the dye polymer is in the form of particles, it is usually used in a state of being dispersed in a solvent. A dye polymer in a particulate state can be obtained, for example, by emulsion polymerization, and specific examples of the compound and manufacturing method described in JP-A-2015-214682 include the compound described in paragraph 0048 of WO 2022/085485.

The chromatic colorant includes a triarylmethane dye polymer described in Korean Patent Publication No. 10-2020-0028160, a xanthene compound described in JP 2020-117638 A, a phthalocyanine compound described in WO 2020/174991 A, an isoindoline compound or a salt thereof described in JP 2020-160279 A, a compound represented by formula 1 described in Korean Patent Publication No. 10-2020-0069442 A, a compound represented by formula 1 described in Korean Patent Publication No. 10-2020-0069730 A, a compound represented by formula 1 described in Korean Patent Publication No. 10-2020-0069070 A Compounds represented by formula 1 described in Korean Patent Publication No. 10-2020-0069067, compounds represented by formula 1 described in Korean Patent Publication No. 10-2020-0069062, halogenated zinc phthalocyanine pigments described in Japanese Patent No. 6809649, isoindoline compounds described in JP-A-2020-180176, phenothiazine compounds described in JP-A-2021-187913, halogenated zinc phthalocyanines described in WO 2022/004261, and halogenated zinc phthalocyanines described in WO 2021/250883 can be used. The other colorant may be a rotaxane, and the dye skeleton may be used in the cyclic structure of the rotaxane, may be used in the rod-shaped structure, or may be used in both structures. Other colorants include quinophthalone compounds represented by formula 1 in Korean Patent Publication No. 10-2020-0030759, polymer dyes described in Korean Patent Publication No. 10-2020-0061793, colorants described in JP-A-2022-029701, isoindoline compounds described in WO 2022/014635, aluminum phthalocyanine compounds described in WO 2022/024926, compounds described in JP-A-2022-045895, compounds described in WO 2022/050051, compounds described in JP-A-2020-090676, compounds described in JP-A-2020-055956, Compounds described in JP 2021-031681 A, compounds described in JP 2022-056354 A, compounds described in US Patent Application Publication No. 2021/0355327 A, compounds described in WO 2022/065357 A, compounds described in JP 2020-045436 A, compounds described in Korean Patent Publication No. 10-2021-0146726 A, compounds described in JP 2018-178039 A, compounds described in Chinese Patent Application Publication No. 113881244 A, compounds described in Chinese Patent Application Publication No. 113881245 A, compounds described in Chinese Patent Application Publication No. 113881246 A, compounds described in JP Compounds described in JP 2022-104822 A, compounds described in JP 2022-096701 A, compounds described in JP 2020-023652 A, green pigments described on pages 80 to 84 of the Journal of the Color Materials Association (published in 2022), compounds described in JP 2022-143135 A, compounds described in JP 2022-140287 A, compounds described in WO 2022/136308 A, perylene compounds described in Chinese Patent Application Publication No. 113061349 A, cyan pigments described in Korean Patent Publication No. 10-2017-0018993 A, isoindoline compounds described in JP 2020-180176 A, JP 2022-143135 A Compounds described in JP-A-023-013209, compounds described in JP-A-2023-013166, xanthene compounds described in WO 2023/286526, compounds described in JP-A-2021-155746, compounds described in JP-A-2021-155747, compounds described in JP-A-2021-155748, compounds described in JP-A-2021-155749, compounds described in WO 2018/051876, compounds described in JP-A-2020-083981, compounds described in JP-A-2023-056463, compounds described in JP-T-2023-515473, and the like can also be used.

Two or more chromatic colorants may be used in combination. When two or more chromatic colorants are used in combination, the combination of two or more chromatic colorants may form black.

The black colorant is not particularly limited, and known materials can be used. The black colorant may be an inorganic black colorant or an organic black colorant. The black colorant is preferably a pigment. In this disclosure, the black colorant means a colorant that exhibits absorption over the entire range of wavelengths from 400 to 700 nm. Examples of inorganic black colorants include carbon black, titanium black, graphite, zirconium oxynitride, and zirconium nitride. Titanium black is a black particle containing titanium atoms, and low-order titanium oxide and titanium oxynitride are preferred. Titanium black can be the titanium black described in paragraph 0044 of International Publication No. 2022/085485. Zirconium nitride can be the compound described in JP-A-2023-048173. Examples of organic black colorants include bisbenzofuranone compounds, azomethine compounds, perylene compounds, and azo compounds, and bisbenzofuranone compounds and perylene compounds are preferred. The organic black coloring material may be a compound described in paragraph 0166 of International Publication No. 2022/065215. In addition, the organic black coloring material may be perylene black (Lumogen Black FK4280, etc.) described in paragraphs 0016 to 0020 of JP 2017-226821 A, or a black azo pigment described in JP 2022-121935 A.

From the viewpoint of further exerting the effects of the present disclosure, the content of the other colorant may be 0.01% by mass to 90% by mass, 0.1% by mass to 80% by mass, 10% by mass to 75% by mass, or 30% by mass to 70% by mass, relative to the total solid content of the coloring composition.
The coloring composition of the present disclosure may contain one type of other colorant alone or two or more types. When the coloring composition of the present disclosure contains one or more other colorants, the total amount thereof is preferably within the above range.

<Pigment Derivatives>
The coloring composition of the present disclosure may contain a pigment derivative. The pigment derivative is used, for example, as a dispersing aid. Examples of the pigment derivative include a compound having a structure in which an acid group or a basic group is bonded to a colorant skeleton.

　Examples of the pigment skeletons that make up the pigment derivatives include a quinoline dye skeleton, a benzimidazolone dye skeleton, a benzisoindole dye skeleton, a benzothiazole dye skeleton, an iminium dye skeleton, a squarylium dye skeleton, a croconium dye skeleton, an oxonol dye skeleton, a pyrrolopyrrole dye skeleton, a diketopyrrolopyrrole dye skeleton, an azo dye skeleton, an azomethine dye skeleton, a phthalocyanine dye skeleton, a naphthalocyanine dye skeleton, an anthraquinone dye skeleton, a quinacridone dye skeleton, a dioxazine dye skeleton, a perinone dye skeleton, a perylene dye skeleton, a thioindigo dye skeleton, an isoindoline dye skeleton, an isoindolinone dye skeleton, a quinophthalone dye skeleton, an iminium dye skeleton, a dithiol dye skeleton, a triarylmethane dye skeleton, and a pyrromethene dye skeleton.

Examples of the acid group include a carboxyl group, a sulfo group, a phosphoric acid group, a boronic acid group, a carboxylic acid amide group, a sulfonic acid amide group, an imide acid group, and salts thereof, with a sulfo group being preferred. Examples of atoms or atomic groups constituting the salt include an alkali metal ion (Li ⁺ , Na ⁺ , K ⁺ , etc.), an alkaline earth metal ion (Ca ²⁺ , Mg ²⁺ , etc.), an ammonium ion, an imidazolium ion, a pyridinium ion, and a phosphonium ion. A preferred example of the carboxylic acid amide group is a group represented by -NHCOR ^X1 . A preferred example of the sulfonic acid amide group is a group represented by -NHSO ₂ R ^X2 . A preferred example of the imide acid group is a group represented by -SO ₂ NHSO ₂ R ^X3 , -CONHSO ₂ R ^X4 , -CONHCOR ^X5 , or SO ₂ NHCOR ^X6 , with -SO ₂ NHSO ₂ R ^X3 being more preferred. R ^x1 to R ^x6 each independently represent an alkyl group or an aryl group. The alkyl group and aryl group represented by R ^x1 to R ^x6 may have a substituent. The substituent is preferably a halogen atom, more preferably a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, and more preferably a fluorine atom.

Examples of the basic group include an amino group, a pyridinyl group and its salts, an ammonium group salt, a phthalimidomethyl group, -SR ^X7 N(R ^X8 ) ₂ , and a group represented by -SO ₂ R ^X9 SO ₂ NHR ^X10 N(R ^X11 ) ₂ , with -SR ^X7 N(R ^X8 ) ₂ and -SO ₂ R ^X9 SO ₂ NHR ^X10 N(R ^X11 ) ₂ being preferred. R ^X7 to R ^X11 each independently represent an alkyl group or an aryl group. Examples of the atom or atomic group constituting the salt include a hydroxide ion, a halogen ion, a carboxylate ion, a sulfonate ion, and a phenoxide ion.

The pigment derivative may be a pigment derivative having excellent visible transparency (hereinafter, also referred to as a transparent pigment derivative). The maximum molar absorption coefficient (εmax) of the transparent pigment derivative in the wavelength region of 400 nm to 700 nm is preferably 3,000 L mol- ¹ cm- ¹ or less, more preferably 1,000 L mol- ¹ cm ^-1 or less, and even more preferably 100 L mol- ¹ cm ^-1 or less. The lower limit of εmax is, for example, 1 L mol- ¹ cm ^-1 or more, and may be 10 L mol- ¹ cm ^-1 or more.

The coloring composition of the present disclosure may contain a pigment derivative represented by the above formula 1. Preferred specific examples of the pigment derivative represented by the above formula 1 are shown below as Y-31 to Y-33, but the pigment derivative represented by the above formula 1 is not limited thereto.

The coloring composition of the present disclosure may contain a colored derivative in addition to the pigment derivatives described above. An example of a colored derivative is pigment derivative X-1 having the following structure.

Specific examples of pigment derivatives include the compounds described in paragraph 0124 of WO 2022/085485, the benzimidazolone compounds or salts thereof described in JP 2018-168244 A, the compounds having an isoindoline skeleton described in general formula (1) of Japanese Patent No. 6996282 A, the compounds described in JP 2019-172968 A, and the compounds described in the specification of Chinese Patent Application Publication No. 115124889.

In the coloring composition of the present disclosure, the content of the pigment derivative is preferably 1 part by mass to 30 parts by mass, and more preferably 3 parts by mass to 20 parts by mass, relative to 100 parts by mass of the total amount of the colorant contained in the coloring composition of the present disclosure. Furthermore, the total content of the pigment derivative and the colorant may be 0.01% by mass to 90% by mass, 0.1% by mass to 80% by mass, 10% by mass to 75% by mass, or 30% by mass to 70% by mass, relative to the total solid content of the coloring composition. Only one type of pigment derivative may be used, or two or more types may be used in combination.

<Resin>
The coloring composition of the present disclosure includes a resin.
In the present disclosure, the resin is blended for use as a dispersant for dispersing a colorant or the like in the colored composition, or as a binder when preparing the colored composition. However, such uses of the resin are merely examples, and the resin may be used for purposes other than these uses.

The weight average molecular weight of the resin is preferably 3,000 to 2,000,000. The upper limit is preferably 1,000,000 or less, and more preferably 500,000 or less. The lower limit is preferably 4,000 or more, and more preferably 5,000 or more.

The resins include (meth)acrylic resins, epoxy resins, ene-thiol resins, polycarbonate resins, polyether resins, polyarylate resins, polysulfone resins, polyethersulfone resins, polyphenylene resins, polyarylene ether phosphine oxide resins, polyimide resins, polyamide resins, polyamideimide resins, polyolefin resins, cyclic olefin resins, polyester resins, styrene resins, vinyl acetate resins, polyvinyl alcohol resins, polyvinyl acetal resins, polyurethane resins, polyurea resins, etc. One of these resins may be used alone, or two or more may be mixed and used. As the cyclic olefin resin, norbornene resin is preferred from the viewpoint of improving heat resistance. Commercially available norbornene resins include, for example, the ARTON series (e.g., ARTON F4520) manufactured by JSR Corporation. In addition, examples of the resin include those described in the examples of WO 2016/088645, those described in JP 2017-057265 A, those described in JP 2017-032685 A, those described in JP 2017-075248 A, those described in JP 2017-066240 A, those described in JP 2017-167513 A, those described in JP 2017-173787 A, and those described in paragraphs 0041 to 0060 of JP 2017-206689 A. Resins described in paragraphs 0022 to 0071 of JP 2018-010856 A, blocked polyisocyanate resins described in JP 2016-222891 A, resins described in JP 2020-122052 A, resins described in JP 2020-111656 A, resins described in JP 2020-139021 A, resins containing a structural unit having a ring structure in the main chain and a structural unit having a biphenyl group in the side chain described in JP 2017-138503 A can also be used. In addition, resins having a fluorene skeleton can also be preferably used as the resin. For resins having a fluorene skeleton, the description in U.S. Patent Application Publication No. 2017/0102610 can be referred to, and the contents of this specification are incorporated herein by reference. In addition, as the resin, the resin described in paragraphs 0199 to 0233 of JP 2020-186373 A, the alkali-soluble resin described in JP 2020-186325 A, the resin represented by formula (1) described in Korean Patent Publication No. 10-2020-0078339 A, the copolymer containing an epoxy group and an acid group described in WO 2022/030445 A, the compound described in JP 2018-135514 A, the copolymer described in JP 2020-041046 A, the resin described in JP 2023-033156 A, the resin described in JP 2023-030386 A, and the resin described in JP 2023-027753 A can also be used.

It is preferable to use a resin having an acid group as the resin. Examples of the acid group include a carboxyl group, a phosphate group, a sulfo group, and a phenolic hydroxyl group. These acid groups may be of only one type or of two or more types. The resin having an acid group can be used, for example, as an alkali-soluble resin. The acid value of the resin having an acid group is preferably 30 mgKOH/g to 500 mgKOH/g. The lower limit is preferably 50 mgKOH/g or more, and more preferably 70 mgKOH/g or more. The upper limit is preferably 400 mgKOH/g or less, more preferably 200 mgKOH/g or less, even more preferably 150 mgKOH/g or less, and most preferably 120 mgKOH/g or less.

The resin may also be the compound described in paragraphs 0056 to 0059 of WO 2022/085485.

As the resin, it is also preferable to use a resin having a polymerizable group. Examples of the polymerizable group include an ethylenically unsaturated group and a cyclic ether group. Among them, from the viewpoint of sensitivity, it is preferable to use a resin having a (meth)acryloyl group, an epoxy group, or an oxetanyl group.

It is also preferable to use a resin having an epoxytricyclodecane group on the side chain as the resin.

As the resin, it is also preferable to use a resin containing a repeating unit derived from a compound represented by formula (X).

In the formula, R ¹ represents a hydrogen atom or a methyl group, R ²¹ and R ²² each independently represent an alkylene group, and n represents an integer of 0 to 15. The number of carbon atoms in the alkylene group represented by R ²¹ and R ²² is preferably 1 to 10, more preferably 1 to 5, even more preferably 1 to 3, and particularly preferably 2 or 3. n represents an integer of 0 to 15, preferably an integer of 0 to 5, more preferably an integer of 0 to 4, and even more preferably an integer of 0 to 3.

Examples of the compound represented by formula (X) include ethylene oxide or propylene oxide modified (meth)acrylate of paracumylphenol. Commercially available products include Aronix M-110 (manufactured by Toagosei Co., Ltd.).

As the resin, it is also preferable to use a resin having an aromatic carboxyl group (hereinafter, also referred to as resin Ac). In resin Ac, the aromatic carboxyl group may be contained in the main chain of the repeating unit, or may be contained in the side chain of the repeating unit. It is preferable that the aromatic carboxyl group is contained in the main chain of the repeating unit. In this disclosure, an aromatic carboxyl group refers to a group having a structure in which one or more carboxyl groups are bonded to an aromatic ring. In the aromatic carboxyl group, the number of carboxyl groups bonded to the aromatic ring is preferably 1 to 4, and more preferably 1 to 2.

The resin Ac is preferably a resin containing at least one repeating unit selected from the repeating units represented by formula (Ac-1) and the repeating units represented by formula (Ac-2).

In formula (Ac-1), Ar ¹ represents a group containing an aromatic carboxyl group, L ¹ represents --COO-- or CONH--, and L ² represents a divalent linking group.
In formula (Ac-2), Ar ¹⁰ represents a group containing an aromatic carboxyl group, L ¹¹ represents --COO-- or CONH--, L ¹² represents a trivalent linking group, and P ¹⁰ represents a polymer chain.

In formula (Ac-1), examples of the group containing an aromatic carboxyl group represented by Ar ¹ include a structure derived from an aromatic tricarboxylic acid anhydride, a structure derived from an aromatic tetracarboxylic acid anhydride, etc. Examples of the aromatic tricarboxylic acid anhydride and aromatic tetracarboxylic acid anhydride include compounds having the following structures.

In the above formula, Q ¹ represents a single bond, —O—, —CO—, —COOCH ₂ CH ₂ OCO—, —SO ₂ —, —C(CF ₃ ) ₂ —, a group represented by the following formula (Q-1) or a group represented by the following formula (Q-2).

The group containing an aromatic carboxyl group represented by Ar ¹ may have a polymerizable group. The polymerizable group is preferably an ethylenically unsaturated group or a cyclic ether group, and more preferably an ethylenically unsaturated group.
Specific examples of the group containing an aromatic carboxyl group represented by Ar ¹ include a group represented by formula (Ar-11), a group represented by formula (Ar-12), and a group represented by formula (Ar-13).

In formula (Ar-11), n1 represents an integer of 1 to 4, preferably 1 or 2, and more preferably 2.
In formula (Ar-12), n2 represents an integer of 1 to 8, preferably an integer of 1 to 4, more preferably 1 or 2, and even more preferably 2.
In formula (Ar-13), n3 and n4 each independently represent an integer of 0 to 4, and are preferably an integer of 0 to 2, more preferably 1 or 2, and further preferably 1. However, at least one of n3 and n4 is an integer of 1 or greater.
In formula (Ar-13), Q ¹ represents a single bond, —O—, —CO—, —COOCH ₂ CH ₂ OCO—, —SO ₂ —, —C(CF ₃ ) ₂ —, a group represented by the above formula (Q-1) or a group represented by the above formula (Q-2).
In formulae (Ar-11) to (Ar-13), *1 represents the bonding position to ^L1 in formula (Ac-1).

In formula (Ac-1), ^L1 represents --COO-- or CONH--, and preferably represents --COO--.

In formula (Ac-1), the divalent linking group represented by L ² includes an alkylene group, an arylene group, -O-, -CO-, -COO-, -OCO-, -NH-, -S-, and a group combining two or more of these. The number of carbon atoms in the alkylene group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 1 to 15. The alkylene group may be linear, branched, or cyclic. The number of carbon atoms in the arylene group is preferably 6 to 30, more preferably 6 to 20, and even more preferably 6 to 10. The alkylene group and the arylene group may have a substituent. Examples of the substituent include a hydroxy group. The divalent linking group represented by L ² is preferably a group represented by -L ^2a -O-. L ^2a may be an alkylene group; an arylene group; a group combining an alkylene group and an arylene group; a group combining at least one selected from an alkylene group and an arylene group with at least one selected from -O-, -CO-, -COO-, -OCO-, -NH- and S-, and is preferably an alkylene group. The number of carbon atoms in the alkylene group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 1 to 15. The alkylene group may be linear, branched, or cyclic. The alkylene group and the arylene group may have a substituent. Examples of the substituent include a hydroxyl group.

The aromatic carboxyl group-containing group represented by Ar ¹⁰ in formula (Ac-2) has the same meaning as Ar ¹ in formula (Ac-1), and preferred embodiments are also the same.

In formula (Ac-2), ^L11 represents --COO-- or CONH--, and preferably represents --COO--.

In formula (Ac-2), the trivalent linking group represented by L ¹² includes a hydrocarbon group, -O-, -CO-, -COO-, -OCO-, -NH-, -S-, and a group combining two or more of these. Examples of the hydrocarbon group include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. The carbon number of the aliphatic hydrocarbon group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 1 to 15. The aliphatic hydrocarbon group may be linear, branched, or cyclic. The carbon number of the aromatic hydrocarbon group is preferably 6 to 30, more preferably 6 to 20, and even more preferably 6 to 10. The hydrocarbon group may have a substituent. Examples of the substituent include a hydroxyl group. The trivalent linking group represented by L ¹² is preferably a group represented by formula (L12-1), and more preferably a group represented by formula (L12-2).

In formula (L12-1), L ^12b represents a trivalent linking group, X ¹ represents S, *1 represents the bonding position to L ¹¹ in formula (Ac-2), and *2 represents the bonding position to P ¹⁰ in formula (Ac-2). Examples of the trivalent linking group represented by L ^12b include a hydrocarbon group; a group in which a hydrocarbon group is combined with at least one selected from -O-, -CO-, -COO-, -OCO-, -NH-, and -S-; and the like, and a hydrocarbon group or a group in which a hydrocarbon group is combined with -O- is preferred.

In formula (L12-2), L ^12c represents a trivalent linking group, X ¹ represents S, *1 represents the bonding position to L ¹¹ in formula (Ac-2), and *2 represents the bonding position to P ¹⁰ in formula (Ac-2). Examples of the trivalent linking group represented by L ^12c include a hydrocarbon group; a group in which a hydrocarbon group is combined with at least one selected from -O-, -CO-, -COO-, -OCO-, -NH-, and -S-; and the like, with a hydrocarbon group being preferred.

In formula (Ac-2), P ¹⁰ represents a polymer chain. The polymer chain represented by P ¹⁰ preferably has at least one repeating unit selected from poly(meth)acrylic repeating units, polyether repeating units, polyester repeating units, and polyol repeating units. The weight average molecular weight of the polymer chain P ¹⁰ is preferably 500 to 20,000. The lower limit is more preferably 1,000 or more. The upper limit is more preferably 10,000 or less, even more preferably 5,000 or less, and particularly preferably 3,000 or less. When the weight average molecular weight of P ¹⁰ is within the above range, the dispersibility of the pigment in the composition is good. When the resin having an aromatic carboxyl group is a resin having a repeating unit represented by formula (Ac-2), this resin is preferably used as a dispersant.

The polymer chain represented by P ¹⁰ may contain a polymerizable group. The polymerizable group may be an ethylenically unsaturated group.

The coloring composition of the present disclosure preferably contains a resin as a dispersant. Examples of the dispersant include an acidic dispersant (acidic resin) and a basic dispersant (basic resin). Here, the acidic dispersant (acidic resin) refers to a resin in which the amount of acid groups is greater than the amount of basic groups. As the acidic dispersant (acidic resin), a resin in which the amount of acid groups is 70 mol% or more is preferable when the total amount of the acid groups and the amount of the basic groups is 100 mol%. The acid group possessed by the acidic dispersant (acidic resin) is preferably a carboxyl group. The acid value of the acidic dispersant (acidic resin) is preferably 10 mgKOH/g to 105 mgKOH/g. In addition, the basic dispersant (basic resin) refers to a resin in which the amount of basic groups is greater than the amount of acid groups. As the basic dispersant (basic resin), a resin in which the amount of basic groups is greater than 50 mol% is preferable when the total amount of the acid groups and the amount of the basic groups is 100 mol%.
The basic group contained in the basic dispersant is preferably an amino group.

The resin used as the dispersant is preferably a graft polymer. For details of the graft polymer, refer to paragraphs 0025 to 0094 of JP2012-255128A, the contents of which are incorporated herein by reference.
From the viewpoint of dispersion stability, it is preferable that the resin is a graft polymer having a graft chain, the graft chain includes at least one type selected from the group consisting of a polyether chain, a polyester chain, and a polyacrylic chain, and the weight average molecular weight of the graft chain is 1,000 or more.

The resin used as the dispersant is preferably a polyimine-based dispersant containing nitrogen atoms in at least one of the main chain and side chain. As the polyimine-based dispersant, a resin having a main chain with a partial structure having a functional group with a pKa of 14 or less and a side chain with an atomic number of 40 to 10,000, and having a basic nitrogen atom in at least one of the main chain and side chain is preferable. There are no particular restrictions on the basic nitrogen atom, so long as it is a nitrogen atom that exhibits basicity. For details of polyimine-based dispersants, please refer to the description in paragraphs 0102 to 0166 of JP 2012-255128 A, the contents of which are incorporated herein by reference.

The resin used as the dispersant is preferably one having a structure in which multiple polymer chains are bonded to a core portion. Examples of such resins include dendrimers (including star-shaped polymers). Specific examples of dendrimers include polymer compounds C-1 to C-31 described in paragraphs 0196 to 0209 of JP 2013-043962 A.

The resin used as the dispersant is also preferably a resin containing a repeating unit having an ethylenically unsaturated group in a side chain. The content of the repeating unit having an ethylenically unsaturated group in a side chain is preferably 10 mol % or more, more preferably 10 mol % to 80 mol %, and even more preferably 20 mol % to 70 mol %, of all repeating units of the resin.
As a resin having an oxetane group, for example, a resin described in WO 2021/182268 or WO 2021/187257 can be used.

Moreover, the resin used as the dispersant is preferably a resin containing an oxetane group on the side chain, and more preferably a resin containing a repeating unit having an oxetane group on the side chain.
Furthermore, the resin containing an oxetane group in the side chain is preferably a graft polymer.
Suitable examples of the resin containing an oxetane group in a side chain include those described in the Examples below. The content of repeating units having an oxetane group in a side chain in the above resin is preferably 10 mol % or more, more preferably 10 mol % to 80 mol %, and even more preferably 20 mol % to 70 mol %, of all repeating units in the resin.

In addition, as dispersants, resins described in JP 2018-087939 A, block copolymers (EB-1) to (EB-9) described in paragraphs 0219 to 0221 of Japanese Patent No. 6,432,077 A, polyethyleneimine having a polyester side chain described in WO 2016/104803 A, block copolymers described in WO 2019/125940 A, block polymers having an acrylamide structural unit described in JP 2020-066687 A, block polymers having an acrylamide structural unit described in JP 2020-066688 A, dispersants described in WO 2016/104803 A, and the like can also be used.

As the dispersant, polyamic acid type dispersing resins and polyimide type dispersing resins can also be used. As such resins, dispersants described in WO 2022/019253, WO 2022/019254, and WO 2022/019255 can also be used.

Dispersants are also available as commercially available products, and specific examples include the Disperbyk series manufactured by BYK-Chemie (e.g., Disperbyk-111, 161, 2001, etc.), the Solsperse series manufactured by Lubrizol Japan Corp. (e.g., Solsperse 20000, 76500, etc.), and the Ajisper series manufactured by Ajinomoto Fine-Techno Co., Ltd. In addition, the products described in paragraph 0129 of JP 2012-137564 A and the products described in paragraph 0235 of JP 2017-194662 A can also be used as dispersants.

When the coloring composition of the present disclosure contains a resin as a radical curable compound, the content of the resin is preferably 1% by mass to 70% by mass based on the total solid content of the coloring composition. The lower limit is more preferably 2% by mass or more, even more preferably 3% by mass or more, and particularly preferably 5% by mass or more. The upper limit is more preferably 65% by mass or less, and even more preferably 60% by mass or less.
The content of the resin having an acid group is preferably 1% by mass to 70% by mass based on the total solid content of the coloring composition. The lower limit is more preferably 2% by mass or more, even more preferably 3% by mass or more, and particularly preferably 5% by mass or more. The upper limit is more preferably 65% by mass or less, and even more preferably 60% by mass or less.
The content of the alkali-soluble resin is preferably 1% by mass to 70% by mass based on the total solid content of the coloring composition. The lower limit is more preferably 2% by mass or more, even more preferably 3% by mass or more, and particularly preferably 5% by mass or more. The upper limit is more preferably 65% by mass or less, and even more preferably 60% by mass or less.
When the coloring composition of the present disclosure contains a resin as a dispersant, the content of the resin as a dispersant is preferably 0.1% by mass to 30% by mass with respect to the total solid content of the coloring composition. The upper limit is more preferably 25% by mass or less, and even more preferably 20% by mass or less. The lower limit is more preferably 0.5% by mass or more, and even more preferably 1% by mass or more. The content of the resin as a dispersant is preferably 1 part by mass to 100 parts by mass with respect to 100 parts by mass of the colorant. The upper limit is more preferably 80 parts by mass or less, even more preferably 70 parts by mass or less, and particularly preferably 60 parts by mass or less. The lower limit is more preferably 5 parts by mass or more, even more preferably 10 parts by mass or more, and particularly preferably 20 parts by mass or more.
The colored composition of the present disclosure may contain only one type of resin, or may contain two or more types of resins. When two or more types of resins are contained, it is preferable that the total amount thereof is within the above range.

<Polymerizable Compound>
The coloring composition of the present disclosure may contain a polymerizable compound.
The polymerizable compound may, for example, be a compound having an ethylenically unsaturated group.

Examples of resin-type polymerizable compounds include resins containing repeating units with radically polymerizable groups. The weight-average molecular weight (Mw) of the resin-type polymerizable compound is preferably 2,000 to 2,000,000. The upper limit of the weight-average molecular weight is more preferably 1,000,000 or less, and even more preferably 500,000 or less. The lower limit of the weight-average molecular weight is more preferably 3,000 or more, and even more preferably 5,000 or more.

The molecular weight of the monomer-type polymerizable compound (i.e., polymerizable monomer) is preferably less than 2,000, and more preferably 1,500 or less. The lower limit of the molecular weight of the polymerizable monomer is preferably 100 or more, and more preferably 200 or more.

The compound having an ethylenically unsaturated group as a polymerizable monomer is preferably a 3-15 functional (meth)acrylate compound, and more preferably a 3-6 functional (meth)acrylate compound. Specific examples include the compounds described in paragraph 0128 of WO 2022/085485 and the compounds described in JP 2017-194662 A, the contents of which are incorporated herein by reference.

As a compound having an ethylenically unsaturated group, the compounds described in paragraphs 0129 to 0137 of WO 2022/085485 can also be used. The compound having an ethylenically unsaturated group may be a compound having an acid group such as a carboxyl group, a sulfo group, or a phosphate group, a compound having a caprolactone structure, a compound having an alkyleneoxy group, or a compound having a fluorene skeleton.

As compounds having an ethylenically unsaturated group, it is also preferable to use UA-7200 (manufactured by Shin-Nakamura Chemical Co., Ltd.), DPHA-40H (manufactured by Nippon Kayaku Co., Ltd.), UA-306H, UA-306T, UA-306I, AH-600, T-600, AI-600, LINC-202UA (manufactured by Kyoeisha Chemical Co., Ltd.), 8UH-1006, 8UH-1012 (all manufactured by Taisei Fine Chemical Co., Ltd.), Light Acrylate POB-A0 (manufactured by Kyoeisha Chemical Co., Ltd.), polymerizable compounds having a dendrimer structure or hyperbranch structure as described in JP-A No. 2023-043479, etc.

The content of the polymerizable compound is preferably 0.1% by mass to 50% by mass based on the total solid content of the coloring composition. The lower limit is more preferably 0.5% by mass or more, and even more preferably 1% by mass or more. The upper limit is more preferably 45% by mass or less, and even more preferably 40% by mass or less.
In the colored composition of the present disclosure, the polymerizable compound may be used alone or in combination with two or more kinds. When two or more kinds are used, the total amount thereof is preferably within the above range.

<Photopolymerization initiator>
The coloring composition of the present disclosure may contain a photopolymerization initiator. The photopolymerization initiator is not particularly limited and may be appropriately selected from known photopolymerization initiators. As the photopolymerization initiator, for example, a compound having photosensitivity to light rays in the ultraviolet region to the visible region is preferred. In addition, the photopolymerization initiator is preferably a photoradical polymerization initiator.

Photopolymerization initiators include halogenated hydrocarbon derivatives (e.g., compounds having a triazine skeleton, compounds having an oxadiazole skeleton, etc.), acylphosphine compounds, hexaarylbiimidazole, oxime compounds, organic peroxides, thio compounds, ketone compounds, aromatic onium salts, α-hydroxyketone compounds, α-aminoketone compounds, etc. From the viewpoint of exposure sensitivity, the photopolymerization initiator is preferably a trihalomethyltriazine compound, a benzyldimethylketal compound, an α-hydroxyketone compound, an α-aminoketone compound, an acylphosphine compound, a phosphine oxide compound, a metallocene compound, an oxime compound, a triarylimidazole dimer, an onium compound, a benzothiazole compound, a benzophenone compound, an acetophenone compound, a cyclopentadiene-benzene-iron complex, a halomethyloxadiazole compound, or a 3-aryl-substituted coumarin compound, more preferably a compound selected from an oxime compound, an α-hydroxyketone compound, an α-aminoketone compound, and an acylphosphine compound, and even more preferably an oxime compound. For information on photopolymerization initiators, please refer to paragraphs 0065 to 0111 of JP 2014-130173 A and the description of Japanese Patent No. 6301489 A, the contents of which are incorporated herein by reference.

Commercially available α-hydroxyketone compounds include IRGACURE-184, DAROCUR-1173, IRGACURE-500, IRGACURE-2959, and IRGACURE-127 (all manufactured by BASF). Commercially available α-aminoketone compounds include IRGACURE-907, IRGACURE-369, IRGACURE-379, and IRGACURE-379EG (all manufactured by BASF). Commercially available acylphosphine compounds include IRGACURE-819 and DAROCUR-TPO (all manufactured by BASF).

Examples of the oxime compound include compounds described in JP-A-2001-233842, compounds described in JP-A-2000-080068, compounds described in JP-A-2006-342166, compounds described in J. C. S. Perkin II (1979, pp. 1653-1660), compounds described in J. C. S. Perkin II (1979, pp. 156-162), compounds described in Journal of Photopolymer Science and Technology (1995, pp.202-232) described compounds, compounds described in JP-A-2000-066385, compounds described in JP-A-2000-080068, compounds described in JP-T-2004-534797, compounds described in JP-A-2006-342166, compounds described in JP-A-2017-019766, compounds described in Japanese Patent No. 6065596, compounds described in WO 2015/152153, compounds described in WO 2017/051680, compounds described in JP-A-2017-198865, compounds described in paragraphs 0025 to 0038 of WO 2017/164127, and the like. Specific examples of the oxime compound include 3-benzoyloxyiminobutan-2-one, 3-acetoxyiminobutan-2-one, 3-propionyloxyiminobutan-2-one, 2-acetoxyiminopentan-3-one, 2-acetoxyimino-1-phenylpropan-1-one, 2-benzoyloxyimino-1-phenylpropan-1-one, 3-(4-toluenesulfonyloxy)iminobutan-2-one, and 2-ethoxycarbonyloxyimino-1-phenylpropan-1-one. Commercially available products include IRGACURE-OXE01, IRGACURE-OXE02, IRGACURE-OXE03, IRGACURE-OXE04 (manufactured by BASF), TR-PBG-304 (manufactured by Changzhou Strong Electronic New Materials Co., Ltd.), ADEKA OPTOMER N-1919 (manufactured by ADEKA Corporation, photopolymerization initiator 2 described in JP-A-2012-014052), and the like. In addition, as the oxime compound, it is also preferable to use a compound that is not colorable or a compound that is highly transparent and does not easily discolor. Commercially available products include ADEKA ARCLES NCI-730, NCI-831, NCI-930 (manufactured by ADEKA Corporation), and the like.
In addition, as an oxime compound in which a hydroxy group is substituted on a carbazole skeleton used as a photopolymerization initiator, those described in International Publication No. WO 2019/088055 can also be used. In addition, as a photopolymerization initiator, an oxime ester compound described in Chinese Patent Application Publication No. 110066225, a compound described in Korean Patent Publication No. 10-2022-0076157, a compound described in paragraphs 0042 to 0062 of International Publication No. WO 2019/013112 having a triarylamine or N-arylcarbazole skeleton, an oxime ester photopolymerization initiator described in Japanese Patent No. 7219378, a photopolymerization initiator described in Korean Patent Publication No. 10-2021-0146174, a photopolymerization initiator described in International Publication No. WO 2019/013112, a photopolymerization initiator described in JP-A-2023-033731 can be used.

Also, an oxime compound having a fluorene ring can be used as the photopolymerization initiator. Specific examples of oxime compounds having a fluorene ring include the compounds described in JP 2014-137466 A, the contents of which are incorporated herein by reference.

Furthermore, an oxime compound having a fluorine atom can also be used as the photopolymerization initiator. Specific examples of oxime compounds having a fluorine atom include the compounds described in JP 2010-262028 A, compounds 24, 36 to 40 described in JP 2014-500852 A, and compound (C-3) described in JP 2013-164471 A. The contents of which are incorporated herein by reference.

Furthermore, an oxime compound having a nitro group can be used as a photopolymerization initiator. It is also preferable that the oxime compound having a nitro group is a dimer. Specific examples of oxime compounds having a nitro group include the compounds described in paragraphs 0031 to 0047 of JP 2013-114249 A and paragraphs 0008 to 0012 and 0070 to 0079 of JP 2014-137466 A, the compounds described in paragraphs 0007 to 0025 of Japanese Patent No. 4223071 A, and ADEKA ARCLES NCI-831 (manufactured by ADEKA Corporation).

Oxime compounds having a benzofuran skeleton can also be used as photopolymerization initiators. Specific examples include OE-01 to OE-75 described in WO 2015/036910.

In addition, oxime compounds having an indole skeleton, oxime compounds having a dibenzofuran skeleton, and oxime compounds having an alkyl group with a cycloalkane as a substituent can also be used as photopolymerization initiators.

Specific examples of oxime compounds that are preferably used are shown below, but are not limited to these.

The oxime compound is preferably a compound having a maximum absorption wavelength in the wavelength range of 350 nm to 500 nm, and more preferably a compound having a maximum absorption wavelength in the wavelength range of 360 nm to 480 nm. From the viewpoint of sensitivity, the molar absorption coefficient of the oxime compound at a wavelength of 365 nm or 405 nm is preferably high, more preferably 1,000 to 300,000, even more preferably 2,000 to 300,000, and particularly preferably 5,000 to 200,000. The molar absorption coefficient of the compound can be measured using a known method. For example, it is preferable to measure using a spectrophotometer (Varian Cary-5 spectrophotometer) at a concentration of 0.01 g/L using ethyl acetate as a solvent.

In addition, examples of polymerization initiators that can be polymerized by both light and heat include the peroxide compounds described in MATERIAL STAGE pp. 37-60, vol. 19, No. 3, 2019, WO 2018/221177, WO 2018/110179, or JP 2019-43864 A.

As the photopolymerization initiator, a bifunctional or trifunctional or higher functional photoradical polymerization initiator may be used. By using such a photoradical polymerization initiator, two or more radicals are generated from one molecule of the photoradical polymerization initiator, so that good sensitivity can be obtained. In addition, when a compound with an asymmetric structure is used, the crystallinity is reduced and the solubility in a solvent or the like is improved, so that precipitation is less likely to occur over time, and the stability over time of the coloring composition can be improved. Specific examples of bifunctional or trifunctional or higher functional photoradical polymerization initiators include the dimers of oxime compounds described in JP-T-2010-527339, JP-T-2011-524436, WO-P-2015/004565, WO-P-2016-532675, paragraphs 0407 to 0412, and WO-P-2017/033680, paragraphs 0039 to 0055, and the compounds described in JP-T-2013-522445. Examples of the photoinitiator include compound (E) and compound (G), Cmpd1 to 7 described in International Publication No. 2016/034963, the oxime ester photoinitiator described in paragraph 0007 of JP-T-2017-523465, the photoinitiator described in paragraphs 0020 to 0033 of JP-A-2017-167399, and the photopolymerization initiator (A) described in paragraphs 0017 to 0026 of JP-A-2017-151342.

The content of the photopolymerization initiator in the total solid content of the coloring composition of the present disclosure is preferably 0.1% by mass to 30% by mass. The lower limit is preferably 0.5% by mass or more, and more preferably 1% by mass or more. The upper limit is preferably 20% by mass or less, and more preferably 15% by mass or less. In the coloring composition of the present disclosure, only one type of photopolymerization initiator may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount thereof is within the above range.

<Surfactant>
The coloring composition of the present disclosure may contain a surfactant. As the surfactant, various surfactants such as fluorine-based surfactants, nonionic surfactants, cationic surfactants, anionic surfactants, and silicone-based surfactants may be used. The surfactant is preferably a silicone-based surfactant or a fluorine-based surfactant. For the surfactant, reference may be made to the surfactants described in paragraphs 0238 to 0245 of WO 2015/166779, the contents of which are incorporated herein by reference.

The fluorine content in the fluorosurfactant is preferably 3% to 40% by mass, more preferably 5% to 30% by mass, and particularly preferably 7% to 25% by mass. Fluorine surfactants with a fluorine content within this range are effective in terms of uniformity of the coating film thickness and liquid saving, and also have good solubility in the coloring composition.

As fluorosurfactants, compounds described in paragraphs 0167 to 0173 of WO 2022/085485, fluorine-containing copolymers described in JP 2022-000494 A, etc. can also be used.

As a nonionic surfactant, the compounds described in paragraph 0174 of WO 2022/085485 can also be used.

Silicone surfactants include DOWSIL SH8400, SH8400 FLUID, FZ-2122, 67 Additive, 74 Additive, M Additive, SF 8419 OIL (all manufactured by Dow Toray Co., Ltd.), TSF-4300, TSF-4445, TSF-4460, and TSF-4452 (all manufactured by Momentum Co., Ltd.). Examples include BYK-307, BYK-322, BYK-323, BYK-330, BYK-333, BYK-3760, and BYK-UV3510 (manufactured by BYK-Chemie), etc.

　Also, compounds with the following structure can be used as silicone surfactants.

The content of the surfactant in the total solid content of the coloring composition is preferably 0.001% by mass to 5.0% by mass, and more preferably 0.005% by mass to 3.0% by mass. There may be only one type of surfactant, or two or more types. When there are two or more types, it is preferable that the total amount thereof is within the above range.

<Polymerization inhibitor>
The coloring composition of the present disclosure may contain a polymerization inhibitor. Examples of the polymerization inhibitor include hydroquinone, p-methoxyphenol, di-tert-butyl-p-cresol, pyrogallol, tert-butylcatechol, benzoquinone, 4,4'-thiobis(3-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-methyl-6-t-butylphenol), and N-nitrosophenylhydroxyamine salts (ammonium salts, cerium salts, etc.). Among these, p-methoxyphenol is preferred. The content of the polymerization inhibitor in the total solid content of the coloring composition is preferably 0.0001% by mass to 5% by mass. The polymerization inhibitor may be one type or two or more types. In the case of two or more types, it is preferable that the total amount thereof is within the above range.

<Infrared absorbent>
The coloring composition of the present disclosure may contain an infrared absorbing agent. For example, when an infrared transmission filter is formed using the coloring composition of the present disclosure, the wavelength of light transmitted through the film obtained by containing an infrared absorbing agent in the coloring composition can be shifted to a longer wavelength side. The infrared absorbing agent is preferably a compound having a maximum absorption wavelength on the longer wavelength side than a wavelength of 700 nm. The infrared absorbing agent is preferably a compound having a maximum absorption wavelength in the range of more than 700 nm and not more than 1800 nm. In addition, the ratio A ¹ /A ^{2 of the absorbance A 1 at} a wavelength of 500 nm of the infrared absorbing agent to the absorbance A ² at the maximum absorption wavelength is preferably 0.08 or less, more preferably 0.04 or less.

Examples of the infrared absorber include pyrrolopyrrole compounds, cyanine compounds, squarylium compounds, phthalocyanine compounds, naphthalocyanine compounds, quaterrylene compounds, merocyanine compounds, croconium compounds, oxonol compounds, iminium compounds, dithiol compounds, triarylmethane compounds, pyrromethene compounds, azomethine compounds, anthraquinone compounds, dibenzofuranone compounds, dithiolene metal complexes, metal oxides, and metal borides.
Specifically, the compounds described in paragraphs 0114 to 0121 of WO 2022/065215, the compounds described in paragraphs 0144 to 0146 of WO 2021/049441, the croconic acid compounds described in JP 2021-195515 A, the near infrared absorbing dyes described in JP 2022-022070 A, the croconium compounds described in WO 2019/021767 A, the compounds described in JP 2019-127549 A, and the compounds described in WO 2022/059619 A can also be used.

The content of the infrared absorbing agent in the total solid content of the coloring composition is preferably 1% by mass to 40% by mass. The lower limit is more preferably 2% by mass or more, even more preferably 5% by mass or more, and particularly preferably 10% by mass or more. The upper limit is more preferably 30% by mass or less, and even more preferably 25% by mass or less. The coloring composition of the present disclosure may contain only one type of infrared absorbing agent, or may contain two or more types. When two or more types of infrared absorbing agents are contained, it is preferable that the total amount thereof is in the above range.

<Ultraviolet absorbing agent>
The coloring composition of the present disclosure may contain an ultraviolet absorber. Examples of ultraviolet absorbers include conjugated diene compounds, aminodiene compounds, salicylate compounds, benzophenone compounds, benzotriazole compounds, acrylonitrile compounds, hydroxyphenyltriazine compounds, indole compounds, triazine compounds, and the like. Specific examples of such compounds include the compounds described in paragraph 0179 of International Publication No. 2022/085485. As ultraviolet absorbers, reactive triazine ultraviolet absorbers described in JP-A-2021-178918, ultraviolet absorbers described in JP-A-2022-007884, compounds described in Korean Patent Publication No. 10-2022-0014454, compounds described in JP-A-2023-013321, and the like may also be used.
The content of the ultraviolet absorber in the total solid content of the coloring composition is preferably 0.01% by mass to 10% by mass, more preferably 0.01% by mass to 5% by mass. Only one type of ultraviolet absorber may be used, or two or more types may be used. When two or more types are used, the total amount thereof is preferably within the above range.

<Antioxidants>
The coloring composition of the present disclosure may contain an antioxidant. Examples of the antioxidant include phenolic compounds, phosphite compounds, and thioether compounds. As the phenolic compound, any phenolic compound known as a phenolic antioxidant may be used. A preferred phenolic compound is a hindered phenolic compound. A compound having a substituent at the site (ortho position) adjacent to the phenolic hydroxy group is preferred. As the above-mentioned substituent, a substituted or unsubstituted alkyl group having 1 to 22 carbon atoms is preferred. In addition, as the antioxidant, a compound having a phenolic group and a phosphite ester group in the same molecule is also preferred. In addition, as the antioxidant, a phosphorus-based antioxidant can also be suitably used. Examples of phosphorus-based antioxidants include tris[2-[[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy]ethyl]amine, tris[2-[(4,6,9,11-tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin-2-yl)oxy]ethyl]amine, and ethylbis(2,4-di-tert-butyl-6-methylphenyl)phosphite. Commercially available antioxidants include, for example, Adeka STAB AO-20, Adeka STAB AO-30, Adeka STAB AO-40, Adeka STAB AO-50, Adeka STAB AO-50F, Adeka STAB AO-60, Adeka STAB AO-60G, Adeka STAB AO-80, and Adeka STAB AO-330 (manufactured by ADEKA Corporation). In addition, the antioxidant may be a compound described in paragraphs 0023 to 0048 of Japanese Patent No. 6268967, a compound described in International Publication No. WO 2017/006600, a compound described in International Publication No. WO 2017/164024, or a compound described in Korean Patent Publication No. 10-2019-0059371. The content of the antioxidant in the total solid content of the coloring composition is preferably 0.01% by mass to 20% by mass, and more preferably 0.3% by mass to 15% by mass. Only one type of antioxidant may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount thereof is in the above range.

<Epoxy Compound>
The coloring composition of the present disclosure can contain an epoxy compound.
The epoxy compound is preferably a compound having 1 to 100 epoxy groups in one molecule. The upper limit of the number of epoxy groups in one molecule may be, for example, 10 or less, or 5 or less.

The epoxy compound preferably has an epoxy equivalent (= molecular weight of the epoxy compound/number of epoxy groups) of 500 g/equivalent or less, more preferably 100 to 400 g/equivalent, and even more preferably 100 to 300 g/equivalent.

The epoxy compound may be a low molecular weight compound (e.g., molecular weight less than 1000) or a high molecular weight compound (macromolecule) (e.g., molecular weight 1000 or more, in the case of a polymer, weight average molecular weight 1000 or more). The weight average molecular weight of the epoxy compound is preferably 200 to 100,000, more preferably 500 to 50,000. The upper limit of the weight average molecular weight is more preferably 10,000 or less, even more preferably 5,000 or less, and even more preferably 3,000 or less.

As the epoxy compound, the compounds described in paragraphs 0034 to 0036 of JP 2013-011869 A, paragraphs 0147 to 0156 of JP 2014-043556 A, and paragraphs 0085 to 0092 of JP 2014-089408 A can also be used. The contents of these are incorporated herein by reference.

When the coloring composition of the present disclosure contains an epoxy compound, the content of the epoxy compound is preferably 0.0001 to 20% by mass, and more preferably 0.001 to 10% by mass, based on the total solid content of the coloring composition. Only one type of epoxy compound may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount thereof is in the above range.

<Solvent>
The coloring composition of the present disclosure includes a solvent.
Examples of the solvent include organic solvents. The type of solvent is not particularly limited as long as the solubility of each component and the coatability of the composition are satisfied. Examples of the organic solvent include ester-based solvents, ketone-based solvents, alcohol-based solvents, amide-based solvents, ether-based solvents, and hydrocarbon-based solvents. For details of these, reference can be made to paragraph number 0223 of International Publication No. 2015/166779, the contents of which are incorporated herein by reference. In addition, ester-based solvents substituted with a cyclic alkyl group and ketone-based solvents substituted with a cyclic alkyl group can also be preferably used.
Specific examples of organic solvents include polyethylene glycol monomethyl ether, dichloromethane, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, 2-pentanone, 3-pentanone, 4-heptanone, cyclohexanone, 2-methylcyclohexanone, 3-methylcyclohexanone, 4-methylcyclohexanone, cycloheptanone, cyclooctanone, cyclohexyl acetate, cyclopentanone, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol monomethyl ether, propylene glycol dimethyl ether, butyl acetate ... Examples of the ethylene glycol monomethyl ether acetate include 3-methoxy-N,N-dimethylpropanamide, 3-butoxy-N,N-dimethylpropanamide, propylene glycol diacetate, 3-methoxybutanol, methyl ethyl ketone, gamma butyrolactone, sulfolane, anisole, 1,4-diacetoxybutane, diethylene glycol monoethyl ether acetate, butane-1,3-diyl diacetate, dipropylene glycol methyl ether acetate, diacetone alcohol (also known as diacetone alcohol and 4-hydroxy-4-methyl-2-pentanone), 2-methoxypropyl acetate, 2-methoxy-1-propanol, and isopropyl alcohol. However, there are cases where it is better to reduce the amount of aromatic hydrocarbons (benzene, toluene, xylene, ethylbenzene, etc.) used as organic solvents for environmental reasons, etc. (for example, the amount can be 50 ppm (parts per million) by mass or less, 10 ppm by mass or less, or 1 ppm by mass or less, relative to the total amount of organic solvents).

In the present disclosure, it is preferable to use an organic solvent with a low metal content. The metal content of the organic solvent is preferably, for example, 10 parts per billion (ppb) by mass or less. If necessary, an organic solvent with a mass ppt (parts per trillion) level may be used, and such an organic solvent is provided, for example, by Toyo Gosei Co., Ltd. (The Chemical Daily, November 13, 2015).

Methods for removing impurities such as metals from organic solvents include, for example, distillation (molecular distillation, thin-film distillation, etc.) and filtration using a filter. The filter used for filtration preferably has a pore size of 10 μm or less, more preferably 5 μm or less, and even more preferably 3 μm or less. The filter material is preferably polytetrafluoroethylene, polyethylene, or nylon.

The organic solvent may contain isomers (i.e., compounds with the same number of atoms but different structures). Also, the organic solvent may contain only one type of isomer or multiple types of isomers.

The peroxide content in the organic solvent is preferably 0.8 mmol/L or less, and more preferably substantially free of peroxide.

The content of the solvent in the coloring composition is preferably 10% by mass to 95% by mass, more preferably 20% by mass to 90% by mass, and even more preferably 30% by mass to 90% by mass.

Furthermore, from the viewpoint of environmental regulations, it is preferable that the coloring composition of the present disclosure is substantially free of environmentally regulated substances. In this disclosure, substantially free of environmentally regulated substances means that the content of environmentally regulated substances in the coloring composition is 50 ppm by mass or less, preferably 30 ppm by mass or less, more preferably 10 ppm by mass or less, and particularly preferably 1 ppm by mass or less. Examples of environmentally regulated substances include benzene; alkylbenzenes such as toluene and xylene; and halogenated benzenes such as chlorobenzene. These substances are registered as environmentally regulated substances under the REACH (Registration Evaluation Authorization and Restriction of Chemicals) regulations, the PRTR (Pollutant Release and Transfer Register) Act, the VOC (Volatile Organic Compounds) regulations, etc., and their usage and handling methods are strictly regulated. These compounds may be used as solvents when producing each component used in the coloring composition, and may be mixed into the coloring composition as a residual solvent. From the viewpoint of human safety and environmental consideration, it is preferable to reduce these substances as much as possible. As a method for reducing the environmentally regulated substances, a method of reducing the environmentally regulated substances by heating or reducing the pressure in the system to a temperature above the boiling point of the environmentally regulated substances and distilling off the environmentally regulated substances from the system can be mentioned. In addition, when distilling off a small amount of environmentally regulated substances, it is useful to perform azeotropy with a solvent having a boiling point equivalent to that of the corresponding solvent in order to increase efficiency. In addition, when a radically polymerizable compound is contained, a polymerization inhibitor or the like may be added and then distilled off under reduced pressure in order to suppress the radical polymerization reaction from proceeding during distillation under reduced pressure and causing crosslinking between molecules. These distillation methods can be performed at any stage, such as the stage of the raw materials, the stage of the product obtained by reacting the raw materials (for example, a resin solution or a polyfunctional monomer solution after polymerization), or the stage of a colored composition prepared by mixing these compounds.

<Curing accelerator>
The coloring composition of the present disclosure may contain a curing accelerator. Examples of the curing accelerator include a thiol compound, a methylol compound, an amine compound, a phosphonium salt compound, an amidine salt compound, an amide compound, a base generator, an isocyanate compound, an alkoxysilane compound, and an onium salt compound. Specific examples of the curing accelerator include the compounds described in paragraph 0164 of WO 2022/085485.
The content of the curing accelerator in the total solid content of the coloring composition is preferably from 0.3% by mass to 8.9% by mass, and more preferably from 0.8% by mass to 6.4% by mass.

<Silane coupling agent>
The coloring composition of the present disclosure may contain a silane coupling agent. In the present disclosure, the silane coupling agent refers to a silane compound having a hydrolyzable group and other functional groups. The hydrolyzable group refers to a substituent that is directly bonded to a silicon atom and can generate a siloxane bond by at least one of a hydrolysis reaction and a condensation reaction. Examples of the hydrolyzable group include a halogen atom, an alkoxy group, and an acyloxy group, and an alkoxy group is preferred. That is, the silane coupling agent is preferably a compound having an alkoxysilyl group. Examples of functional groups other than the hydrolyzable group include a vinyl group, a (meth)allyl group, a (meth)acryloyl group, a mercapto group, an epoxy group, an oxetanyl group, an amino group, a ureido group, a sulfide group, an isocyanate group, and a phenyl group, and an amino group, a (meth)acryloyl group, and an epoxy group are preferred. Specific examples of the silane coupling agent include the compounds described in paragraph 0177 of WO 2022/085485 and the compounds described in JP-A 2019-183020.
The content of the silane coupling agent in the total solid content of the coloring composition is preferably from 0.01% by mass to 15.0% by mass, and more preferably from 0.05% by mass to 10.0% by mass.
The silane coupling agent may be one type or two or more types. When two or more types are used, the total amount thereof is preferably within the above range.

<Chain Transfer Agent>
The coloring composition of the present disclosure may contain a chain transfer agent.
Examples of the chain transfer agent include a thiol compound (hereinafter also referred to as a "thiol-based chain transfer agent"), a thiocarbonylthio compound, and an aromatic α-methylalkenyl dimer. Thiol-based chain transfer agents are preferred because they make it easy to adjust the line width of the pattern even when used in a small amount.
In addition, by using a thiol-based chain transfer agent, it is possible to further improve sensitivity and adhesion to a substrate, and it is possible to reduce the amount of radical polymerization initiator used, and it is possible to suppress the generation of residues in the cured product of the colored composition of the present disclosure.
The chain transfer agent is preferably a compound that is less colored.

- Thiol-based chain transfer agent -
The thiol chain transfer agent is a compound having one or more thiol groups, and preferably a compound having two or more thiol groups. The upper limit of the number of thiol groups contained in the thiol chain transfer agent is preferably 20 or less, more preferably 15 or less, even more preferably 10 or less, particularly preferably 8 or less, and most preferably 6 or less. The lower limit of the number of thiol groups contained in the thiol chain transfer agent is preferably 3 or more. From the viewpoint of adhesion, it is particularly preferable that the thiol chain transfer agent is a compound having four thiol groups. The thiol chain transfer agent is preferably a thiol chain transfer agent in which the carbon to which the thiol group is bonded has a substituent, and more preferably a thiol chain transfer agent in which the carbon to which the thiol group is bonded has an alkyl group as a substituent.

- Aromatic α-methylalkenyl dimer -
An example of the aromatic α-methylalkenyl dimer is 2,4-diphenyl-4-methyl-1-pentene.

Furthermore, as a chain transfer agent, a trithiocarbonate compound such as that used as a RAFT agent in reversible addition-fragmentation chain transfer (RAFT) polymerization, which is a type of living polymerization, can also be preferably used.

The molecular weight of the chain transfer agent is preferably 200 or more, since this can suppress contamination of the apparatus due to sublimation. The upper limit is preferably 1,000 or less, more preferably 800 or less, and even more preferably 600 or less, since this can increase the SH valence per unit mass.

From the viewpoint of adhesion, the content of the chain transfer agent is preferably 0.01% by mass to 10% by mass, more preferably 0.01% by mass to 5% by mass, and even more preferably 0.05% by mass to 1% by mass, based on the total solid content of the coloring composition. Only one type of chain transfer agent may be used, or two or more types may be used in combination.

<Other ingredients>
The coloring composition of the present disclosure may contain, as necessary, a sensitizer, a curing accelerator, a filler, a heat curing accelerator, a plasticizer, and other auxiliaries (for example, conductive particles, defoamers, flame retardants, leveling agents, peeling accelerators, fragrances, surface tension adjusters, etc.). By appropriately incorporating these components, it is possible to adjust the properties of the film physical properties, etc. As these components, the compounds described in paragraph 0182 of WO 2022/085485, the xanthene type epoxy resins described in JP-A 2021-195421, the xanthene type epoxy resins described in JP-A 2021-195422, and the like can also be used.

The coloring composition of the present disclosure may contain a metal oxide in order to adjust the refractive index of the resulting film. Examples of the metal oxide include TiO ₂ , ZrO ₂ , Al ₂ O ₃ , and SiO ₂ . The primary particle size of the metal oxide is preferably 1 nm to 100 nm, more preferably 3 nm to 70 nm, and even more preferably 5 nm to 50 nm. The metal oxide may have a core-shell structure. In this case, the core may be hollow.

The coloring composition of the present disclosure may contain a light resistance improver. The light resistance improver may be the compound described in paragraph 0183 of WO 2022/085485.

It is also preferable that the coloring composition of the present disclosure is substantially free of terephthalic acid esters. Here, "substantially free" means that the content of terephthalic acid esters in the total amount of the coloring composition is 1000 ppb by mass or less, more preferably 100 ppb by mass or less, and particularly preferably zero.

From the viewpoint of environmental regulations, the use of perfluoroalkylsulfonic acid and its salts, and perfluoroalkylcarboxylic acid and its salts may be restricted. In the coloring composition of the present disclosure, when the content of the above-mentioned compounds is reduced, the content of perfluoroalkylsulfonic acid (particularly perfluoroalkylsulfonic acid having a perfluoroalkyl group with 6 to 8 carbon atoms) and its salts, and perfluoroalkylcarboxylic acid (particularly perfluoroalkyl carboxylic acid having a perfluoroalkyl group with 6 to 8 carbon atoms) and its salts is preferably in the range of 0.01 ppb to 1,000 ppb, more preferably in the range of 0.05 ppb to 500 ppb, and even more preferably in the range of 0.1 ppb to 300 ppb, based on the total solid content of the coloring composition. The coloring composition of the present disclosure may be substantially free of perfluoroalkylsulfonic acid and its salts, and perfluoroalkylcarboxylic acid and its salts. For example, a coloring composition that is substantially free of perfluoroalkylsulfonic acid and its salt, and perfluoroalkylcarboxylic acid and its salt may be selected by using a compound that can be a substitute for perfluoroalkylsulfonic acid and its salt, and a compound that can be a substitute for perfluoroalkylcarboxylic acid and its salt. Examples of compounds that can be a substitute for regulated compounds include compounds that are excluded from the scope of regulation due to the difference in the number of carbon atoms in the perfluoroalkyl group. However, the above content does not prevent the use of perfluoroalkylsulfonic acid and its salt, and perfluoroalkylcarboxylic acid and its salt. The coloring composition of the present disclosure may contain perfluoroalkylsulfonic acid and its salt, and perfluoroalkylcarboxylic acid and its salt within the maximum allowable range. From the viewpoint of environmental regulations, the use of fluorine-containing compounds may be regulated. When the content of the fluorine-containing compound in the curable composition is reduced, the content of the fluorine-containing compound in the curable composition is preferably 5% by mass or less, more preferably 1% by mass or less, and even more preferably 0.1% by mass or less. The curable composition may be substantially free of fluorine-containing compounds.

The water content of the coloring composition of the present disclosure is preferably 3% by mass or less, more preferably 0.01% by mass to 1.5% by mass, and even more preferably in the range of 0.1% by mass to 1.0% by mass. The water content can be measured by the Karl Fischer method.

The colored composition of the present disclosure can be used by adjusting the viscosity for the purpose of adjusting the film surface state (flatness, etc.), adjusting the film thickness, etc. The value of the viscosity can be appropriately selected as necessary, and is preferably, for example, 0.3 mPa·s to 50 mPa·s, and more preferably 0.5 mPa·s to 20 mPa·s at 25° C. The viscosity can be measured, for example, using a cone-plate type viscometer, with the temperature adjusted to 25° C.
In the coloring composition of the present disclosure, the amount of chloride ions in the coloring composition is preferably 10,000 ppm or less, more preferably 1000 ppm or less, from the viewpoints of environmental friendliness, suppression of foreign matter generation, suppression of equipment contamination, etc. In order to make the chloride ions in the coloring composition fall within the above range, a method of using a raw material with a low chloride ion content, a method of removing chloride ions by washing with water, ion exchange resin, filter filtration, etc., etc. can be mentioned. A known method can be used as a method for measuring chloride ions, and examples thereof include ion chromatography, combustion ion chromatography, etc.

<Containment container>
The container for storing the coloring composition is not particularly limited, and a known container can be used. In addition, the container described in paragraph 0187 of WO 2022/085485 can also be used as the container.

<Method of preparing coloring composition>
The coloring composition of the present disclosure can be prepared by mixing the above-mentioned components. When preparing the coloring composition, all components may be simultaneously dissolved and/or dispersed in a solvent to prepare the coloring composition, or, if necessary, each component may be appropriately prepared as two or more solutions or dispersions, which are mixed at the time of use (for example, at the time of application) to prepare the coloring composition.

In addition, it is preferable that the preparation of the coloring composition includes a process for dispersing the pigment. In the process for dispersing the pigment, examples of mechanical forces used to disperse the pigment include compression, squeezing, impact, shear, and cavitation. Specific examples of these processes include bead mills, sand mills, roll mills, ball mills, paint shakers, microfluidizers, high-speed impellers, sand grinders, flow jet mixers, high-pressure wet atomization, and ultrasonic dispersion. In addition, in the grinding of the pigment in a sand mill (bead mill), it is preferable to use beads with a small diameter, increase the bead packing rate, and perform the process under conditions that increase the grinding efficiency. In addition, it is preferable to remove coarse particles by filtration, centrifugation, etc. after the grinding process. In addition, the process and dispersing machine for dispersing the pigment may be suitably used as described in "Dispersion Technology Encyclopedia, published by Joho Kika Co., Ltd., July 15, 2005" or "Dispersion Technology and Industrial Application Practice Focusing on Suspension (Solid/Liquid Dispersion System) - Comprehensive Data Collection, published by Management Development Center Publishing Department, October 10, 1978", and in paragraph number 0022 of JP2015-157893A. In addition, in the process for dispersing the pigment, a salt milling process may be performed to refine the particles. For the materials, equipment, processing conditions, etc. used in the salt milling process, the descriptions in, for example, JP2015-194521A and JP2012-046629A may be referred to. As beads used for dispersion, zirconia, agate, quartz, titania, tungsten carbide, silicon nitride, alumina, stainless steel, glass, or a combination thereof may be used. In addition, inorganic compounds with a Mohs hardness of 2 or more can be used. The composition may contain 1 to 10,000 ppm of the above beads.

When preparing the coloring composition, it is preferable to filter the coloring composition with a filter for the purpose of removing foreign matter, reducing defects, etc. For example, the filters and filtration methods described in paragraphs 0196 to 0199 of WO 2022/085485 can be used.

<Membrane>
The film according to the present disclosure is a film formed by curing the colored composition according to the present disclosure.
The curing method is not particularly limited, but examples thereof include curing by exposure to actinic rays such as ultraviolet light, and curing by heating.
The film according to the present disclosure is preferably, for example, in the form of a thin film.
The film according to the present disclosure can be used in optical filters such as color filters and infrared transmission filters. In particular, it can be preferably used as color pixels of color filters. Examples of color pixels include red pixels, green pixels, blue pixels, magenta pixels, cyan pixels, and yellow pixels.

The thickness of the film according to the present disclosure can be adjusted as appropriate depending on the purpose, but is preferably 0.1 μm to 20 μm. The upper limit of the film thickness is more preferably 10 μm or less, even more preferably 5 μm or less, particularly preferably 3 μm or less, and most preferably 1.5 μm or less. The lower limit of the film thickness is more preferably 0.2 μm or more, and even more preferably 0.3 μm or more.

<Membrane manufacturing method>
The method for producing a film according to the present disclosure is not particularly limited, but preferably includes a step of irradiating the colored composition according to the present disclosure with light having a wavelength of 150 nm to 400 nm.

The film according to the present disclosure can be produced through a process of applying the coloring composition according to the present disclosure to a support. The film production method preferably further includes a process of forming a pattern (pixels). Methods for forming the pattern (pixels) include photolithography and dry etching, with photolithography being preferred.

Pattern formation by photolithography preferably includes a step of forming a coloring composition layer on a support using the coloring composition of the present disclosure, a step of exposing the coloring composition layer in a pattern, and a step of developing and removing the unexposed parts of the coloring composition layer to form a pattern (pixels). If necessary, a step of baking the coloring composition layer (pre-baking step) and a step of baking the developed pattern (pixels) (post-baking step) may be provided.

In the step of forming the coloring composition layer, the coloring composition layer is formed on a support using the coloring composition of the present disclosure. The support is not particularly limited and can be appropriately selected depending on the application. For example, a glass substrate, a silicon substrate, etc. can be mentioned, and a silicon substrate is preferable. A charge-coupled device (CCD), a complementary metal oxide semiconductor (CMOS), a transparent conductive film, etc. may be formed on the silicon substrate. A black matrix for isolating each pixel may also be formed on the silicon substrate. A base layer may be provided on the silicon substrate to improve adhesion with the upper layer, prevent diffusion of substances, or flatten the substrate surface. The base layer may be formed using a composition obtained by removing the colorant from the coloring composition described in the present disclosure, or a composition containing the resin, polymerizable compound, surfactant, etc. described in the present disclosure. The surface contact angle of the base layer is preferably 20° to 70° when measured with diiodomethane. It is also preferable that the surface contact angle is 30° to 80° when measured with water.

　A known method can be used to apply the coloring composition. For example, the method described in paragraph 0207 of WO 2022/085485 can be used.

The colored composition layer formed on the support may be dried (prebaked). When a film is produced by a low-temperature process, prebaking may not be performed. When prebaking is performed, the prebaking temperature is preferably 150°C or less, more preferably 120°C or less, and even more preferably 110°C or less. The lower limit can be, for example, 50°C or more, and can also be 80°C or more. The prebaking time is preferably 10 seconds to 300 seconds, more preferably 40 seconds to 250 seconds, and even more preferably 80 seconds to 220 seconds. Prebaking can be performed using a hot plate, an oven, etc.

Next, the colored composition layer is exposed to light in a pattern (exposure step). For example, the colored composition layer can be exposed to light in a pattern by using a stepper exposure machine, a scanner exposure machine, or the like, through a mask having a predetermined mask pattern. This allows the exposed parts to be cured.

Radiation (light) that can be used for exposure includes g-line, h-line, i-line, etc. Light with a wavelength of 300 nm or less can also be used. Examples of light with a wavelength of 300 nm or less include KrF line (wavelength 248 nm) and ArF line (wavelength 193 nm), with KrF line (wavelength 248 nm) being preferred. Long-wavelength light sources of 300 nm or more can also be used.

In addition, during exposure, light may be applied continuously or in pulses (pulse exposure). Pulse exposure is an exposure method in which light is applied and paused repeatedly in short cycles (e.g., milliseconds or less).

The irradiation amount (exposure amount) is, for example, preferably 0.03 J/cm ² to 2.5 J/cm ² , more preferably 0.05 J/cm ² to 1.0 J/cm ^2. The oxygen concentration during exposure can be appropriately selected, and in addition to being performed under air, for example, exposure may be performed under a low-oxygen atmosphere with an oxygen concentration of 19 volume% or less (e.g., 15 volume%, 5 volume%, or substantially oxygen-free), or exposure may be performed under a high-oxygen atmosphere with an oxygen concentration of more than 21 volume% (e.g., 22 volume%, 30 volume%, or 50 volume%). The exposure illuminance can be appropriately set, and can usually be selected from the range of 1000 W/m ² to 100,000 W/m ² (e.g., 5,000 W/m ² , 15,000 W/m ² , or 35,000 W/m ² ). The oxygen concentration and exposure illuminance may be appropriately combined. For example, the oxygen concentration may be 10% by volume and the illuminance may be 10,000 W/m ² , and the oxygen concentration may be 35% by volume and the illuminance may be 20,000 W/m ² .

Next, the unexposed parts of the coloring composition layer are developed and removed to form a pattern (pixels). The unexposed parts of the coloring composition layer can be developed and removed using a developer. As a result, the coloring composition layer in the unexposed parts in the exposure step dissolves into the developer, and only the photocured parts remain. The temperature of the developer is preferably, for example, 20°C to 30°C. The development time is preferably 20 seconds to 180 seconds. In addition, to improve residue removal, the process of shaking off the developer every 60 seconds and then supplying new developer may be repeated several times.

The developer may be an organic solvent, an alkaline developer, etc., and an alkaline developer is preferably used. For example, the developer and development method described in paragraph 0214 of WO 2022/085485 may be used.

After development and drying, it is preferable to perform additional exposure processing or heating processing (post-baking). Additional exposure processing and post-baking are curing processing after development to complete curing. The heating temperature in post-baking is, for example, preferably 100°C to 240°C, more preferably 200°C to 240°C. Post-baking can be performed continuously or batchwise using a heating means such as a hot plate, a convection oven (hot air circulation dryer), or a high-frequency heater to achieve the above conditions for the developed film. When additional exposure processing is performed, it is preferable that the light used for exposure has a wavelength of 400 nm or less. In addition, additional exposure processing may be performed by the method described in Korean Patent Publication No. 10-2017-0122130.

　The method described in paragraph 0216 of WO 2022/085485 can also be used for pattern formation using the dry etching method.

<Color filters>
The color filter according to the present disclosure has the film according to the present disclosure.
The color filter preferably has the film according to the present disclosure as its colored pixels.

The film thickness of the film disclosed herein in a color filter can be adjusted as appropriate depending on the purpose. The film thickness is preferably 20 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less. The lower limit of the film thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more.

The width of the pixels included in the color filter is preferably 0.4 μm to 10.0 μm. The lower limit is more preferably 0.4 μm or more, even more preferably 0.5 μm or more, and particularly preferably 0.6 μm or more. The upper limit is more preferably 5.0 μm or less, even more preferably 2.0 μm or less, particularly preferably 1.0 μm or less, and most preferably 0.8 μm or less. The Young's modulus of the pixels is preferably 0.5 GPa to 20 GPa, and more preferably 2.5 GPa to 15 GPa.

Each pixel included in the color filter preferably has high flatness. Specifically, the surface roughness Ra of the pixel is preferably 100 nm or less, more preferably 40 nm or less, and even more preferably 15 nm or less. Although the lower limit is not specified, it is preferably 0.1 nm or more, for example. The surface roughness of the pixel can be measured using, for example, an AFM (atomic force microscope) Dimension 3100 manufactured by Veeco. In addition, the contact angle of water on the pixel can be set to an appropriate preferred value, but is typically in the range of 50° to 110°. The contact angle can be measured using, for example, a contact angle meter CV-DT-A type (manufactured by Kyowa Interface Science Co., Ltd.). In addition, it is preferable that the volume resistance value of the pixel is high. Specifically, the volume resistance value of the pixel is preferably 10 ⁹ Ω·cm or more, more preferably 10 ¹¹ Ω·cm or more. Although the upper limit is not specified, it is preferably 10 ¹⁴ Ω·cm or less, for example. The volume resistance value of the pixel can be measured using an ultra-high resistance meter 5410 (manufactured by Advantest Corporation).

In the color filter, a protective layer may be provided on the surface of the film according to the present disclosure. By providing a protective layer, various functions such as oxygen blocking, low reflection, hydrophilicity/hydrophobicity, and shielding of light of a specific wavelength (ultraviolet rays, near infrared rays, etc.) can be imparted. The thickness of the protective layer is preferably 0.01 μm to 10 μm, more preferably 0.1 μm to 5 μm. Methods for forming the protective layer include a method of forming the protective layer by applying a composition for forming the protective layer, a chemical vapor deposition method, and a method of attaching a molded resin with an adhesive. The components constituting the protective layer include (meth)acrylic resin, ene-thiol resin, polycarbonate resin, polyether resin, polyarylate resin, polysulfone resin, polyethersulfone resin, polyphenylene resin, polyarylene ether phosphine oxide resin, polyimide resin, polyamideimide resin, polyolefin resin, cyclic olefin resin, polyester resin, styrene resin, polyol resin, polyvinylidene chloride resin, melamine resin, urethane resin, aramid resin, polyamide resin, alkyd resin, epoxy resin, modified silicone resin, fluorine resin, polycarbonate resin, polyacrylonitrile resin, cellulose resin, Si, C, W, Al ₂ O ₃ , Mo, SiO ₂ , Si ₂ N _4, etc., and may contain two or more of these components. For example, in the case of a protective layer intended for oxygen blocking, the protective layer preferably contains a polyol resin, SiO ₂ , and Si ₂ N ₄ . In the case of a protective layer intended to reduce reflection, the protective layer preferably contains a (meth)acrylic resin and a fluorine resin.

The protective layer may contain additives such as organic or inorganic particles, absorbents for light of specific wavelengths (e.g., ultraviolet light, near infrared light, etc.), refractive index adjusters, antioxidants, adhesion agents, and surfactants, as necessary. Examples of organic or inorganic particles include polymer particles (e.g., silicone resin particles, polystyrene particles, melamine resin particles), titanium oxide, zinc oxide, zirconium oxide, indium oxide, aluminum oxide, titanium nitride, titanium oxynitride, magnesium fluoride, hollow silica, silica, calcium carbonate, and barium sulfate. Known absorbents can be used as absorbents for light of specific wavelengths. The content of these additives can be adjusted as appropriate, but is preferably 0.1% by mass to 70% by mass, and more preferably 1% by mass to 60% by mass, based on the total mass of the protective layer.

The protective layer may also be the one described in paragraphs 0073 to 0092 of JP2017-151176A.

The color filter may have a structure in which each pixel is embedded in a space partitioned by partitions, for example in a grid pattern.

<Solid-state imaging element>
The solid-state imaging device according to the present disclosure has the film according to the present disclosure.
The configuration of the solid-state imaging element is not particularly limited as long as it functions as a solid-state imaging element, and examples thereof include the following configurations.

The configuration has a plurality of photodiodes constituting a light receiving area of a solid-state imaging element (such as a CCD (charge-coupled device) image sensor or a CMOS (complementary metal-oxide semiconductor) image sensor) on a substrate, a light-shielding film on the photodiodes and the transfer electrodes with only the light receiving parts of the photodiodes open, a device protection film made of silicon nitride or the like formed on the light-shielding film so as to cover the entire light-shielding film and the light receiving parts of the photodiodes, and a color filter on the device protection film.Furthermore, the configuration may have a light-collecting means (e.g., a microlens, etc.; the same applies below) on the device protection film and below the color filter (i.e., on the side closer to the substrate), or a configuration may have a light-collecting means on the color filter.
The color filter may have a structure in which each colored pixel is embedded in a space partitioned by partitions, for example in a lattice shape. In this case, the partitions preferably have a lower refractive index than each colored pixel. Examples of imaging devices having such a structure include those described in JP 2012-227478 A, JP 2014-179577 A, and WO 2018/043654 A. In addition, as shown in JP 2019-211559 A, an ultraviolet absorbing layer may be provided in the structure of the solid-state imaging element to improve light resistance. The imaging device including the solid-state imaging element according to the present disclosure can be used for digital cameras, electronic devices having an imaging function (such as mobile phones), as well as vehicle-mounted cameras and surveillance cameras.

Image display device
The image display device according to the present disclosure has the film according to the present disclosure. Examples of the image display device include a liquid crystal display device and an organic electroluminescence display device. The definition of the image display device and details of each image display device are described, for example, in "Electronic Display Devices (by Akio Sasaki, published by Kogyo Chosakai Co., Ltd. in 1990)" and "Display Devices (by Junsho Ibuki, published by Sangyo Tosho Co., Ltd. in 1989)". In addition, the liquid crystal display device is described, for example, in "Next Generation Liquid Crystal Display Technology (edited by Tatsuo Uchida, published by Kogyo Chosakai Co., Ltd. in 1994)". There is no particular limitation on the liquid crystal display device to which the present disclosure can be applied, and the present disclosure can be applied to various types of liquid crystal display devices described in the above "Next Generation Liquid Crystal Display Technology".

<Compound represented by formula 1>
The compound of the present disclosure is represented by formula 1 below.

In formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.

The explanation of each symbol in the compound represented by formula 1 according to the present disclosure, including definitions, examples, and preferred embodiments, is the same as that of formula 1 in the explanation of the colorant described in the section Coloring composition, and therefore will not be repeated.

The compound represented by the above formula 1 is preferably a colorant, and more preferably a pigment.

The present disclosure will be described in more detail below with reference to examples. The materials, amounts used, ratios, processing contents, processing procedures, etc. shown in the following examples can be changed as appropriate without departing from the spirit of the present disclosure. Therefore, the scope of the present disclosure is not limited to the specific examples shown below. In the present examples, "%" and "parts" mean "% by mass" and "parts by mass", respectively, unless otherwise specified.
The colorants Y-1 to Y-30 used in the examples are the same compounds as the colorants Y-1 to Y-30 described above as specific examples of the colorant represented by formula 1, respectively.

Synthesis Example 1: Synthesis of compound (Y-1)
Butylenediamine (compound a-3) 20.1 ml (0.2 mol), ethyl cyanoacetate 46.7 ml (0.44 mol), and ethanol 40 ml were stirred for 2 hours at an internal temperature of 55° C. Then, the precipitated product was filtered by suction, and the residue was washed with a mixed solvent of ethyl acetate 200 ml and hexane 600 ml, to isolate bis-cyanoacetylbutylenediamine (compound b-3). Yield: 40.0 g, yield: 90%.
20 ml of dimethylformamide was added to 0.77 g (3.4 mmol) of the obtained bis-cyanoacetylbutylenediamine (compound b-3), and the mixture was completely dissolved while being heated to 50° C., after which 1 g (6.9 mmol) of 1,3-diiminoisoindoline (compound c-1) was added and stirred at an internal temperature of 95° C. for 2 hours. After stirring was completed, the mixture was subjected to suction filtration while still hot, and washed with 5 ml of dimethylformamide and 400 ml of pure water to obtain a synthetic intermediate (compound d-1). Yield: 1.36 g, yield: 84%.
400 ml of acetic acid and 9 g of compound e-1 were added to 10 g of synthetic intermediate (compound d-1), and the mixture was heated and stirred under reflux conditions for 3 hours. After the reaction was completed, the mixture was filtered with suction while still hot, and washed with 200 ml of acetic acid and 200 ml of methanol to obtain 16.5 g of compound (Y-1). Yield: 90%.
The (M+H)(posi) value in the mass spectrum of compound (Y-1) was 873. Compound (Y-1) was dissolved in 98% sulfuric acid and subjected to NMR measurement using a coaxial NMR tube manufactured by Shigemi Co., Ltd. ^1H -NMR (lock solvent: deuterated DMSO) 1.39 (4H, m), 3.22 (4H, m), 7.32-7.40 (6H, m), 7.64 (2H, s), 7.91 (2H, m), 8.45 (2H, m), 12.58 (2H, br-s).

The other compounds Y-2 to Y-33 were synthesized in the same manner as compound Y-1, except that they were replaced with compounds a, b, c, d, and e, as shown in Table 1 below.

The structures of the synthesized compounds Y-1 to Y-33 are as described above in the section entitled "Coloring Composition."

<Preparation of Dispersion>
A mixture of the raw materials shown in Tables 2 to 4 below was mixed and dispersed for 3 hours using a bead mill (zirconia beads 0.1 mm in diameter). Next, a dispersion treatment was carried out using a high-pressure disperser NANO-3000-10 with a pressure reducing mechanism (manufactured by Japan BEE Co., Ltd.) under conditions of a pressure of 2,000 kg/ ^cm2 and a flow rate of 500 g/min. This dispersion treatment was repeated a total of 10 times to obtain a dispersion. The numerical values showing the blending amounts shown in Tables 2 to 4 below are parts by mass. The numerical values of the blending amounts of the dispersant are numerical values converted into solid content.

Details of the materials indicated by the abbreviations in the table showing the dispersion composition above are as follows:

<Coloring Agent>
PR122: C.I. Pigment Red 122 [quinacridone compound, red pigment (R pigment)]
PR177: C.I. Pigment Red 177 [anthraquinone compound, red pigment (R pigment)]
PR224: C.I. Pigment Red 224 [perylene compound, red pigment (R pigment)]
PR254: C.I. Pigment Red 254 [diketopyrrolopyrrole compound, red pigment (R pigment)]
PR264: C.I. Pigment Red 264 [diketopyrrolopyrrole compound, red pigment (R pigment)]
PR272: C.I. Pigment Red 272 [diketopyrrolopyrrole compound, red pigment (R pigment)]
PG36: C.I. Pigment Green 36 [copper phthalocyanine complex, green pigment (G pigment)]
PG58: C.I. Pigment Green 58 [zinc phthalocyanine complex, green pigment (G pigment)]
PG63: C.I. Pigment Green 63 ((PG63-1) described in JP-A-2018-141894)
PY129: C.I. Pigment Yellow 129 [azomethine copper complex, yellow pigment (Y pigment)]
PY138: C.I. Pigment Yellow 138 [quinophthalone compound, yellow pigment (Y pigment)]
PY139: C.I. Pigment Yellow 139 [isoindoline compound, yellow pigment (Y pigment)]
PY185: C.I. Pigment Yellow 185 [isoindoline compound, yellow pigment (Y pigment)]
G1: A compound having the following structure:

<Pigment Derivatives>
X-1: The compound shown below.

<Dispersant>
D1: 30% by mass propylene glycol monomethyl ether acrylate (PGMEA) solution of a resin having the following structure. The number attached to the main chain is the molar ratio, and the number attached to the side chain is the number of repeating units. Mw: 24,000.

D2: 40% by weight PGMEA solution of the resin with the following structure. The numbers attached to the main chain are molar ratios. Mw: 11,000.

D3: 30% by weight PGMEA solution of the resin with the following structure. The number attached to the main chain is the molar ratio, and the number attached to the side chain is the number of repeating units. Mw: 17,000.

D4: 30% by weight PGMEA solution of the resin with the following structure. The number attached to the main chain is the molar ratio, and the number attached to the side chain is the number of repeating units. Mw: 7000.

D5: 30% by weight PGMEA solution of the resin with the following structure. The numbers added to the side chains are the number of repeating units. Mw: 16,000.

D6: 30% by weight PGMEA solution of the resin with the following structure. The number attached to the main chain is the molar ratio, and the number attached to the side chain is the number of repeating units. Mw: 10,000.

D7: Block polymer EB-1 described in Japanese Patent Publication No. 6432077.

D8: 30% by weight PGMEA solution of the resin with the following structure. The numbers attached to the main chain are molar ratios. Mw: 12,000.

D9: DISPERBYK (registered trademark) -142.

D10: 30% by weight PGMEA solution of the resin with the following structure. The numbers attached to the main chain are molar ratios. Mw: 6000.

D11: 30% by weight PGMEA solution of the resin with the following structure. The number attached to the main chain is the molar ratio, and the number attached to the side chain is the number of repeating units. Mw: 7500.

<Solvent>
S1: Propylene glycol monomethyl ether acetate (PGMEA)
S2: Cyclohexanone S3: Butyl acetate S4: Ethyl lactate S5: Propylene glycol monomethyl ether (PGME)
S6: Cyclopentanone

<Polymerization inhibitor>
H1: p-Methoxyphenol

<Production of Colored Composition>
Using the dispersions shown in Tables 2 to 4, colored compositions of the examples and comparative examples were prepared as shown in Tables 5 to 10. The numerical values showing the blending amounts shown in Tables 5 to 10 are parts by mass.

Details of the materials indicated by the abbreviations in the table showing the composition of the above coloring composition are as follows:

<Binder>
Details of the materials indicated by the abbreviations in the binder are the same as those of the materials indicated by the abbreviations in the <Dispersant> described above.

<Polymerizable Compound>
M1: The following compound, which is a polymerizable monomer.

M2: The compound below.

M3: The compound below.

M4: Succinic acid modified dipentaerythritol hexaacrylate (acid value 67 mg KOH/g)

M5: The following compound.

M6: The compound below.

<Photopolymerization initiator>
F1: The compound below.

F2: The following compound.

F3: The following compound.

F4: The following compound.

F5: The following compound.

F6: The following compound.

<Surfactant>
W1: The compound below.

W2: The compound below.

<Ultraviolet absorbing agent>
UV1: The following compound.

UV2: The following compounds.

<Epoxy Compound>
G1: The compound below.

<Antioxidants>
I1: The following compound.

Evaluation
The prepared colored compositions were evaluated for the following items. The evaluation results are shown in Tables 5 to 10.

<Heat resistance>
CT-4000 (manufactured by Fujifilm Electronic Materials Co., Ltd.) was applied to a glass substrate by spin coating so that the film thickness was 0.1 μm, and heated at 220 ° C. for 1 hour using a hot plate to form an undercoat layer. Each coloring composition was applied to the glass substrate with the undercoat layer by spin coating, and then heated at 100 ° C. for 2 minutes using a hot plate to obtain a coating film. The obtained coating film was irradiated with light having a wavelength of 365 nm and exposed at an exposure dose of 500 mJ / cm ^2. Next, the film was heated at 220 ° C. for 5 minutes using a hot plate to obtain a cured film with a film thickness of 0.5 μm. The obtained cured film was measured for light transmittance (transmittance) in the range of 400 to 700 nm using an instantaneous multi-photometering system MCPD-3000 manufactured by Otsuka Electronics Co., Ltd. Next, the cured film prepared above was heated at 265 ° C. for 5 minutes. The transmittance of the cured film after heating was measured to determine the maximum change in transmittance, and the heat resistance was evaluated according to the following evaluation criteria. The transmittance was measured five times for each sample, and the average of the three results excluding the maximum and minimum values was used. The maximum change in transmittance means the change in the wavelength range of 400 to 700 nm at which the change in transmittance of the cured film was the largest before and after heating. In Table 10, * indicates that the transmittance was not measured.

(Evaluation Criteria)
A: The change in transmittance is less than 5%.
B: The change in transmittance is 5% or more and less than 10%.
C: The change in transmittance is 10% or more.

<Heat resistance>
Each coloring composition was applied by spin coating onto an 8-inch (203.2 mm) glass wafer with an undercoat layer so that the film thickness after post-baking was 0.5 μm, and then heated at 100° C. for 2 minutes using a hot plate to obtain a coloring composition layer.
Next, this colored composition layer was exposed to light through a mask of a 5.0 μm square dot pattern at an exposure dose of 1000 mJ/cm ² using an i-line stepper exposure device (FPA-3000i5+, manufactured by Canon Inc.). Next, the glass wafer on which the colored composition layer after exposure was formed was placed on the horizontal rotating table of a spin-shower developer (DW-30 type, manufactured by Chemitronics Co., Ltd.), and paddle development was performed for 60 seconds at 23 ° C. using a developer (60% diluted solution of CD-2000 (manufactured by Fujifilm Electronic Materials Co., Ltd.)). Thereafter, the glass wafer was fixed to the horizontal rotating table by a vacuum chuck method, and while rotating the glass wafer at a rotation speed of 50 rpm by a rotating device, pure water was supplied from a spray nozzle in a shower-like manner from above the center of the rotation to perform a rinse treatment, and spray-dried. Furthermore, a heat treatment (post-bake) was performed for 300 seconds using a hot plate at 200 ° C. to form a pixel 1.
Next, on the glass wafer on which the pixel 1 was formed, a colored composition for evaluating thermal diffusion resistance was used to form pixel 2 in the missing portion of pixel 1 on the glass wafer in the same manner as pixel 1. For pixel 2, the transmittance (spectral spectrum 1) in the wavelength range of 400 nm to 700 nm was measured using a microscopy system (LVmicro V, manufactured by Lambda Vision Co., Ltd.).
Thereafter, the glass wafer on which pixel 1 and pixel 2 were formed was heated at 260° C. for 5 minutes using a hot plate in an air atmosphere, and then the transmittance (spectral spectrum 2) of pixel 2 in the wavelength range of 400 nm to 700 nm was measured using a microscopy system (LVmicro V, manufactured by Lambda Vision Co., Ltd.).
The maximum change in transmittance was determined using spectrum 1 and spectrum 2 of pixel 2, and the thermal diffusion resistance was evaluated according to the following criteria. The transmittance was measured five times for each sample, and the average of the three results excluding the maximum and minimum values was used. The maximum change in transmittance refers to the change in the wavelength at which the change in transmittance of pixel 2 was the largest before and after heating in the wavelength range of 400 to 700 nm.
As the colored composition for evaluating the thermal diffusion resistance, blue colored composition 1 shown below was used.

(Evaluation Criteria)
A: The maximum change in transmittance is less than 3%.
B: The maximum change in transmittance is 3% or more and less than 5%.
C: The maximum change in transmittance is 5% or more.

(Blue colored composition 1 for thermal diffusion evaluation)
118.5 parts by mass of C.I. Pigment Blue 15:6, 29.6 parts by mass of C.I. Pigment Violet 23, 51.9 parts by mass of dispersant D12, and 800 parts by mass of solvent S1 were mixed to obtain a mixed liquid. The obtained mixed liquid was subjected to a dispersion treatment using Ultra Apex Mill (trade name) manufactured by Kotobuki Industries Co., Ltd. as a circulation type dispersion device (bead mill), to obtain a dispersion liquid B1. The solid content of the obtained dispersion liquid B1 was 20.0% by mass.
A blue colored composition 1 was prepared by mixing 85.14 parts by mass of the dispersion B1, 0.05 parts by mass of the binder D8, 0.90 parts by mass of the photopolymerization initiator F3, 0.01 parts by mass of the polymerization inhibitor H1, 0.01 parts by mass of the surfactant W1, and 13.89 parts by mass of the solvent S1.
The solvent S1, the dispersant D12, the binder D8, the photopolymerization initiator F3, the polymerization inhibitor H1, and the surfactant W1 are the materials described above.

As shown in Tables 5 to 10 above, the coloring compositions of the examples had higher heat resistance and lower thermal diffusion to other pixels than the coloring compositions of the comparative examples.

The disclosure of Japanese Patent Application No. 2023-132118, filed on August 14, 2023, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims (11)

A coloring composition comprising a colorant represented by the following formula 1, a resin, and a solvent.

In the formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more. The coloring composition according to claim 1, wherein in formula 1, n is 2 or 3. The coloring composition according to claim 1 or 2, wherein A and B in formula 1 are 6-membered monocyclic structures. 3. The coloring composition according to claim 1, wherein in formula 1, L ¹ is a divalent linking group having 2 to 15 carbon atoms. The coloring composition according to claim 1 or 2, further comprising a photopolymerization initiator and a polymerizable compound. The coloring composition according to claim 1 or 2, further comprising at least one of a green colorant and a red colorant. A film formed by curing the coloring composition according to claim 1 or 2. A color filter having the film according to claim 7. A solid-state imaging device having the film according to claim 7. An image display device having the film according to claim 7. A compound represented by the following formula 1.

In the formula 1, A and B each independently represent a monocyclic structure or a polycyclic structure having 5 or more members, ^L1 represents an n-valent linking group, and n represents an integer of 2 or more.