JP7184630B2 - Laundry liquid composition - Google Patents

Description

The present invention relates to liquid laundry compositions.

In recent years, consumers have demanded not only cleaning performance but also fabric care performance such as softness, or repellency performance, lingering scent performance, etc. in liquid laundry compositions. When the capsule particles encapsulating a functional base such as a fabric care compound, a repellent compound, or a fragrance composition are incorporated into the liquid laundry composition, the capsule particles encapsulating the functional base in the liquid laundry composition. is known to separate when suspended. It is known that thickening the liquid composition is useful for suppressing the separation of capsule particles. However, it is difficult to maintain viscosity control and dispersion stability of the functional base. As such, external structuring systems that impart favorable rheological properties, specifically thixotropy, are known to be useful.

Patent Document 1 discloses a fatty acid glyceride having a hydroxyl group in an aliphatic acyl group as a component (A), a nonionic surfactant as a component (B), an anionic surfactant as a component (C), and water. and the total content of component (B) and component (C) is more than 0% by mass and 9% by mass or less, and the content mass ratio of component (C) to component (B) is 0 or more and less than 0.25. , discloses thixotropic agents for liquid detergent compositions.
In Patent Documents 2 and 3, a liquid composition (1) containing a crystalline fatty acid glyceride as a component (A), an anionic surfactant as a component (B), and water is mixed at a specific temperature, cooled and A method for producing an agent imparting thixotropic properties, including a holding step, and a mixture obtained by mixing and cooling the liquid composition (1) at a specific temperature, a liquid composition containing a surfactant and water (2) is disclosed to prepare a liquid composition.

JP 2016-113510 A JP 2016-147934 A JP 2016-147935 A

The liquid compositions disclosed in Patent Documents 1 to 3 may lose dispersion stability after storage of the liquid composition.
An object of the present invention is to provide a liquid laundry composition with optimized viscosity balance and rheological properties and excellent dispersion stability.

The present invention is a liquid laundry composition containing the following components (A) to (D) and water,
(A) fatty acid glyceride having a hydroxyl group in the aliphatic acyl group: 0.07% by mass or more and 5% by mass or less;
(B) a nonionic surfactant,
(C) cationic surfactant 0.1% by mass or more and 2.0% by mass or less,
(D) a water-insoluble carrier having an average particle size of 5 μm or more and 30 μm or less supporting a functional base: 0.1% by mass or more and 1% by mass or less;
The total content of component (B) and component (C) is 5.5% by mass or more and 12% by mass or less,
Provided is a liquid laundry composition in which the mass ratio [(B)/(C)] of component (B) to component (C) is 5 or more and 30 or less.

According to the present invention, it is possible to provide a liquid laundry composition with optimized viscosity balance and rheological properties and excellent dispersion stability.

[Laundry liquid composition]
The present invention is a liquid laundry composition containing the following components (A) to (D) and water.
(A) fatty acid glyceride having a hydroxyl group in the aliphatic acyl group: 0.07% by mass or more and 5% by mass or less;
(B) a nonionic surfactant,
(C) cationic surfactant 0.1% by mass or more and 2.0% by mass or less,
(D) a water-insoluble carrier having an average particle size of 5 μm or more and 30 μm or less supporting a functional base: 0.1% by mass or more and 1% by mass or less;
The total content of component (B) and component (C) is 5.5% by mass or more and 12% by mass or less,
The mass ratio [(B)/(C)] of component (B) to component (C) is 5 or more and 30 or less.

The liquid laundry composition of the present invention is a composition with optimized viscosity balance and rheological properties and excellent dispersion stability. (D) Functionality resulting from the functional base relating to the component can be imparted to the laundry.
Although the reason is not clear, it is considered as follows.
It is believed that the liquid laundry compositions of the present invention contain a specific ratio of nonionic and cationic surfactants to optimize the external structuring system that imparts thixotropic properties. As a result, it is believed that a suitable viscosity balance and rheological properties were optimized, resulting in excellent dispersion stability. In addition, since the water-insoluble carrier supporting the functional base can be uniformly dispersed, it is considered that functionality can be effectively imparted to the laundry.

<(A) Fatty Acid Glyceride Having a Hydroxyl Group in the Aliphatic Acyl Group>
(A) Fatty acid glyceride having a hydroxyl group in the aliphatic acyl group (hereinafter also referred to as "(A) fatty acid glyceride") has one or more hydrogen atoms in the acyl group from the viewpoint of enhancing the effect of imparting thixotropic properties. is preferably a fatty acid glyceride having an aliphatic acyl group having 14 to 18 carbon atoms substituted with a hydroxyl group. By having a hydroxyl group in the aliphatic acyl group, crystal growth of (A) fatty acid glyceride is promoted by intermolecular hydrogen bonding between (A) fatty acid glycerides, and viscosity balance becomes suitable.
(A) Fatty acid glycerides can have up to three aliphatic acyl groups having hydroxyl groups in the aliphatic acyl groups.
(A) The average number of aliphatic acyl groups having a hydroxyl group in the fatty acid glyceride is preferably 1 or more, more preferably 2 or more, and still more preferably 2.5 or more, from the viewpoint of promoting crystal formation. From the viewpoint of improving storage stability, it is more preferably 3.

(A) The iodine value of the fatty acid glyceride is preferably 5 g-I ₂ /100 g or less, more preferably 4 g-I ₂ /100 g or less, from the viewpoint of further increasing the viscosity of the liquid detergent composition under low shear. It is preferably 3 g-I ₂ /100 g or less, more preferably 2 g-I ₂ /100 g or less.
The iodine value can be determined by the method described in JIS K0070:1992 (Methods for testing acid value, saponification value, ester value, iodine value, hydroxyl value and unsaponifiable matter of chemical products).
(A) Fatty acid glycerides are preferably one or more selected from hydrogenated castor oil and hydrogenated castor oil. (A) Fatty acid glyceride can be used individually by 1 type or in combination of 2 or more types.

((A) Fatty acid glyceride content)
The content of (A) fatty acid glyceride in the liquid laundry composition of the present invention is 0.07% by mass or more, preferably 0.10% by mass or more, from the viewpoint of improving stability, fluidity, etc. It is more preferably 0.15% by mass or more, and from the viewpoint of improving stability and fluidity and from the viewpoint of economy, it is 5% by mass or less, preferably 2% by mass or less, and more preferably 0.5% by mass. % by mass or less.

<(B) Nonionic surfactant>
(B) The nonionic surfactant increases the affinity with (A) the fatty acid glyceride, lowers the viscosity of the liquid laundry composition of the present invention under high shear, and increases the viscosity under low shear. , HLB by the Griffin method is preferably 9.5 or more, more preferably 9.7 or more, still more preferably 9.9 or more, and preferably 12.5 or less, more preferably 11.5 or less, and further It is preferably 11.0 or less, more preferably 10.8 or less.
(B) Nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, alkyl polyglycosides, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyethylene/polyoxypropylene block polymers, Alkyl glyceryl ether and the like can be mentioned.

(B) The nonionic surfactant is one selected from polyoxyalkylene alkyl ethers and polyoxyalkylene alkenyl ethers containing a polyoxyethylene group, from the viewpoint of improving the dispersibility in water of (A) fatty acid glycerides. The above are preferable, and the compound represented by the following general formula (1) is more preferable.
R ¹ O—(A ¹ O) _x H (1)
In formula (1), R ¹ is a hydrocarbon group having 8 to 22 carbon atoms, and A ¹ O is an alkyleneoxy group having 2 to 5 carbon atoms. x represents the average number of added moles of A ¹ O, and is a number of 3 or more and 35 or less, and when A ¹ O is an ethyleneoxy group, x is 3 or more, and in the case of an alkyleneoxy group other than an ethyleneoxy group , x is 5 or less.

The number of carbon atoms in the hydrocarbon group represented by R ¹ in formula (1) is 8 or more, preferably 10 or more, and 22 or less, preferably 16 or less, more preferably 14.
The hydrocarbon group for R ¹ includes a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, preferably a linear or branched, saturated or unsaturated hydrocarbon group. Chained or branched alkyl and alkenyl groups are more preferred, straight or branched chain alkyl groups are more preferred, and straight chain alkyl groups are even more preferred.
A ¹ O is an alkyleneoxy group having 2 or more and 5 or less carbon atoms, and A ¹ O preferably contains at least an ethyleneoxy group. In formula (1), A ¹ O may be of a single type or a mixture of multiple types.

The average addition mole number x of A ¹ O is 3 or more and 35 or less. When x is 3 or more, it is possible to sufficiently suppress formation of liquid crystals and reduction in solubility when diluted with water. Moreover, when x is 35 or less, the dispersion stability of the liquid laundry composition is improved. x is preferably 4 or more, more preferably 5 or more, preferably 25 or less, more preferably 18 or less, and even more preferably 12 or less.
Further, when A ¹ O is an ethyleneoxy group, the average addition mole number x is 3 or more, preferably 4 or more, more preferably 5 or more. All of A ¹ O may be ethyleneoxy groups.
When A ¹ O is an alkyleneoxy group other than an ethyleneoxy group, the average addition mole number x is 5 or less, preferably 3 or less, more preferably 1 or less, and still more preferably 0.

The method for obtaining the compound represented by formula (1) is not particularly limited, but examples thereof include a method of subjecting an alcohol (R ¹ OH) having 8 to 22 carbon atoms to addition reaction with an alkylene oxide having 2 to 5 carbon atoms. be done.
The average added mole number x of A ¹ O is the reaction ratio (molar ratio) of the alkylene oxide having 2 to 5 carbon atoms with respect to the alcohol (R ¹ OH) used in the production of the (B) nonionic surfactant, good too.

(B) As the nonionic surfactant, one or more selected from compounds represented by the formula (1) can be used, and the compound represented by the formula (1) and other poly An oxyalkylene alkyl ether type nonionic surfactant can also be used in combination. Examples of nonionic surfactants other than the compound represented by formula (1) include compounds in which the average added mole number x in formula (1) is outside the range of 3 or more and 35 or less.
When a nonionic surfactant other than the compound represented by formula (1) is used as component (B), the mixture with the compound represented by formula (1) must satisfy the conditions of formula (1). preferable. In that case, the mixture preferably satisfies the distribution condition of the average number of added moles of the alkyleneoxy group.
When the component (B) is a mixture containing two or more nonionic surfactants, the average number of added moles of the mixture is the mixture mass ratio of each nonionic surfactant before mixing, and the distribution of alkyleneoxy groups. It shall be calculated by converting to the molar ratio when it is regarded as one type of structure that does not have.

(B) The nonionic surfactant is more preferably a compound represented by the following general formula (1-1) from the viewpoint of improving the storage stability and solubility of the liquid laundry composition.
R ¹ O—(C ₂ H ₄ O) _m (A ² O) _n H (1-1)
In formula (1-1), R ¹ is the same as above, and A ² O is an alkyleneoxy group having 3 or more and 5 or less carbon atoms. m and n represent the average number of added moles, where m is a number of 3 or more and 30 or less, and n is a number of 0 or more and 5 or less. The _C2H4O and ^A2O groups can be _either randomly or block-bound.

The average added mole number m of C ₂ H ₄ O is 3 or more, preferably 4 or more, and 30 or less, preferably 27 or less, more preferably, from the viewpoint of storage stability and solubility. is 24 or less. The average added mole number n of A ² O is 0 or more and 5 or less, preferably 4 or less. Incidentally, in relation to the formula (1), x corresponds to the sum of m and n.
The alkyleneoxy group, which is A ² O, is obtained by an addition reaction of an alkylene oxide having 3 to 5 carbon atoms, and the portion bonded by the addition reaction has a methyl-branched or propyl-branched structure. A ² O is preferably a propyleneoxy group obtained by addition reaction of propylene oxide.
That is, in the compound represented by the formula (1-1), A ² O is a propyleneoxy group, the average addition mole number n is 0 or more and 4 or less, and the average addition mole number of C ₂ H ₄ O is A compound in which the number m is 3 or more and 30 or less, further 3 or more and 27 or less, and furthermore 4 or more and 24 or less is more preferable.
The compound represented by formula (1-1) can be obtained by subjecting an alcohol (R ¹ OH) having 8 to 22 carbon atoms to an addition reaction with ethylene oxide, or by reacting ethylene oxide with an alkylene oxide having 3 to 5 carbon atoms. It can be obtained by random or blockwise addition reaction.

<(C) Cationic Surfactant>
(C) The cationic surfactant is blended and contained in order to optimize the ratio with (B) the nonionic surfactant and to provide suitable viscosity balance and rheological properties.
(C) As the cationic surfactant, a quaternary ammonium salt type surfactant represented by the following general formula (2) is preferred.

In formula (2) ^, R ¹¹ is a straight or branched hydrocarbon group having 8 to 18 carbon atoms, and may contain -(A ³ O) _s -. A ³ O is an ethyleneoxy group or a propyleneoxy group, and s indicates the average number of added moles of A ³ O and is a number of 0 or more and 10 or less. R ¹² is a hydrocarbon group in the same range as R ¹¹ , or an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a hydroxyalkyl group having 1 to 3 carbon atoms, and R ¹³ and R ¹⁴ are , each independently an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a hydroxyalkyl group having 1 to 3 carbon atoms, and X ^— is CH ₃ SO ₄ ⁻ , CH ₃ CH ₂ SO ₄ ⁻ , or halogen compound ion.
When R ¹² is a hydrocarbon group in the same range as R ¹¹ , R ¹² and R ¹¹ may be exactly the same or may have different numbers of carbon atoms.

The number of carbon atoms in the hydrocarbon group represented by R ¹¹ in formula (2) is 8 or more, preferably 10 or more, and 18 or less, preferably 16 or less. The hydrocarbon group for R ¹¹ includes a straight-chain or branched-chain hydrocarbon group and excludes a benzene ring or cyclic structure group. The hydrocarbon group for R ¹¹ is preferably a straight-chain alkyl group or straight-chain alkenyl group, more preferably derived from natural fats and oils.
The hydrocarbon group of R ¹¹ may contain a divalent group represented by —(A ³ O) _s —. The average addition mole number s of A ³ O is 0 or more and 10 or less, and 0 is preferable.
Examples of the alkyl group having 1 to 3 carbon atoms for R ¹² , R ¹³ and R ¹⁴ include a methyl group, an ethyl group and a propyl group, and a methyl group and an ethyl group are preferred.
The counter ion ^X- in formula ⁽ 2) is preferably CH ₃ SO ₄ - or CH ₃ CH ₂ SO ₄ ^- from the viewpoints of improving stability and fluidity and from the viewpoint of economy.

(C) As the cationic surfactant, for example, the following compounds (c1) to (c4) can be used, including one or more compounds selected from (c1), (c2) and (c4) preferably.
(c1): R ¹¹ and R ¹² in formula (2) are linear alkyl groups having 10 to 18 carbon atoms, s is 0, and R ¹³ and R ¹⁴ are each alkyl groups having 1 to 3 carbon atoms. Quaternary ammonium salt (c2): R ¹¹ in formula (2) is a linear alkyl group having 10 to 18 carbon atoms, s is 0, and R ¹² to R ¹⁴ are alkyl groups each having 1 to 3 carbon atoms A quaternary ammonium salt (c3) wherein R ¹¹ in formula (2) is a branched alkyl group having 10 to 18 carbon atoms, s is 0, and R ¹² to R ¹⁴ each have 1 to 3 carbon atoms. Quaternary ammonium salt (c4) which is an alkyl group: R ¹¹ in formula (2) is a linear alkyl group having 10 to 18 carbon atoms, s is 0, and R ¹² is a branched chain having 10 to 18 carbon atoms A quaternary ammonium salt in which the alkyl group, R ¹³ and R ¹⁴ are each an alkyl group having 1 to 3 carbon atoms

In the cationic surfactant (C), one or more compounds selected from the above (c1) and (c2) preferably account for 50% by mass or more of the component (C), and preferably 60% by mass or more. is more preferable, and it is even more preferable that it accounts for 80% by mass or more.
Suitable examples of R ¹¹ to R ¹⁴ and counter ions in the compounds (c1) to (c4) are the same as those listed in formula (2) above.

(Content of surfactant)
The contents of the (B) nonionic surfactant and (C) the cationic surfactant in the liquid laundry composition of the present invention are as follows, from the viewpoint of improving stability and fluidity, and from the viewpoint of economy. It is as follows.
The total content of component (B) and component (C) [(B)+(C)] in the liquid laundry composition is 5.5% by mass or more, preferably 7% by mass or more, and more preferably is 9% by mass or more, more preferably 10% by mass or more, and is 12% by mass or less, preferably 11.8% by mass or less, more preferably 11.5% by mass or less, further preferably 11% by mass It is below.
The mass ratio of component (B) to component (C) [(B)/(C)] is 5 or more, preferably 7 or more, more preferably 8 or more, still more preferably 10 or more, and 30 or less, preferably 25 or less, more preferably 22 or less, and still more preferably 20 or less.
The content of component (B) in the liquid laundry composition satisfies the numerical range of the total content [(B) + (C)] and the mass ratio [(B) / (C)] described above. , preferably 4% by mass or more, more preferably 5% by mass or more, still more preferably 9% by mass or more, and preferably 12% by mass or less, more preferably 11.5% by mass or less, still more preferably 11% by mass % by mass or less.

The content of component (C) in the liquid laundry composition is 0.1% by mass or more, preferably 0.3% by mass or more, more preferably 0.5% by mass or more; It is 0% by mass or less, preferably 1.7% by mass or less, and more preferably 1.5% by mass or less.

<(D) Non-water-soluble carrier supporting functional base>
The liquid laundry composition of the present invention contains (D) a water-insoluble carrier carrying a functional base. Here, the term “water-insoluble carrier” refers to a carrier that dissolves in an amount of 0 g or more and less than 0.1 g when dissolved in 100 g of ion-exchanged water at 25° C. until saturation.
The functional base in component (D) can be used without any particular limitation as long as it can impart some function to textile products such as clothing.
Functional bases include fragrances, antibacterial and antifungal agents, repellents, softening bases, antistatic agents, wrinkle inhibitors, UV protection agents, fluorescent whitening agents, cleaning aids, anti-redeposition agents, enzymes, A bleaching agent etc. are mentioned. Among these, perfumes capable of imparting perfume properties or utilizing a masking effect are preferred.
A functional base can be used individually by 1 type or in combination of 2 or more types.

The functional base is preferably microencapsulated with any diluent or solvent with a water-insoluble carrier. That is, microcapsules are preferable as the water-insoluble carrier supporting the functional base. For example, microcapsules can be obtained by using a water-insoluble resin as a water-insoluble carrier, which is an outer shell (wall material), and encapsulating a functional base by a known method.
A method for preparing the microcapsules is not particularly limited. For example, chemical production methods (interfacial polymerization method, in situ polymerization method, orifice method), physicochemical methods (coacervation method), mechanical and physical methods (air suspension coating method, spray drying method, high-speed air flow medium impact method) and the like.
Materials constituting the outer shell of the microcapsules include various high-molecular compounds such as polyurethane, polyamide, melamine resin, urea resin, alginate, gelatin, gum arabic, and starch. Among these, the outer shell is preferably one or more selected from polyurethane, polyamide, melamine resin, urea resin, alginate, polyacrylic resin, gelatin and gum arabic.
In addition to the functional base, the microcapsules may contain one or more selected from diluents such as polyhydric alcohols, solvents, and solidifying agents.

Specific examples of the method for producing microcapsules include "Create + Use Microcapsules" (Masumi Koishi et al., Industrial Research Institute, published in 2005), JP 2008-63575, JP 2006-249326, JP 2006-249326, The methods described in JP-A-11-216354 and JP-A-5-222672 can be mentioned.
A more preferred method is to obtain an emulsion by dispersing an emulsifier such as an ethylene-maleic anhydride copolymer, a functional base and an optional diluent or solvent in water, and then add melamine-formaldehyde to the emulsion. A method of obtaining a slurry of microcapsules by adding and stirring a wall material such as a resin, and a monomer that becomes a resin that forms an outer shell in advance, an isobutylene-maleic anhydride copolymer, and an acrylic acid-acrylamide copolymer After preparing a shell material/emulsifier mixture in water, emulsify this with a functional base and an optional diluent or solvent, add formaldehyde to the emulsion, and stir. and a method of obtaining a slurry of microcapsules.

(D) When the functional base in the component is a perfume, the perfume used includes, for example, Genichi Indo, "Synthetic perfume, chemistry and product knowledge, expanded and revised edition" (The Chemical Daily, published in 2005) and , edited and written by Mototaka Nakashima, "Fundamental Knowledge of Fragrance and Perfume Toning" (published by Sangyo Tosho Co., Ltd., 2005).
The perfume contained in the microcapsules [hereinafter also referred to as "fragrance (d1)"] is a perfume compound having a logP value of 2.0 or more and 6.0 or less [hereinafter also referred to as "fragrance compound (d1)"]. It is preferable to contain 90% by mass or more.
Here, the logP value is a coefficient indicating the affinity of an organic compound for water and 1-octanol. The logP values of many compounds have been reported, and databases available from Daylight Chemical Information Systems, Inc. (Daylight CIS) and the like contain many values and can be referred to. If there is no actually measured logP value, it can be calculated using a program such as "CLOGP" available from Daylight CIS. The program outputs the "calculated logP (ClogP)" values calculated by the fragment approach of Hansch, Leo, along with the actual logP values, if any.
In the present invention, the measured value of logP is used if it is available, otherwise the ClogP value calculated by the program CLOGP v4.01 is used.

Perfume (d1) is usually a composition containing multiple perfume compounds, including perfume compound (d1). The perfume (d1) more preferably contains 95% by mass or more of the perfume compound (d1). In addition, the logP value of the flavoring compound (d1) is preferably 2.3 or more, more preferably 2.5 or more, and preferably 5.5 or less, more preferably 5.0 or less.
Perfumes with logP values higher than 6.0 can also be used.

(D) the average particle size of the water-insoluble carrier supporting the functional base is 5 μm or more, preferably 6 μm or more, and 30 μm or less, preferably 20 μm or less, more preferably 15 μm or less; More preferably, it is 10 μm or less. The average particle size is a median size determined by a laser diffraction/scattering particle size distribution analyzer. In addition, (D) the water-insoluble carrier supporting the functional base may be partially aggregated to the extent that the storage stability is not impaired.

The content of (D) the water-insoluble carrier supporting the functional base in the liquid laundry composition is from the viewpoint that the laundry can be imparted with the function based on the functional base while supporting the functional base. For example, when the functional base is a perfume, it is 0.1% by mass or more, preferably 0.15% by mass or more, more preferably 0.2% by mass, from the viewpoint of lingering fragrance and deodorizing properties. From the viewpoint of economic efficiency, etc., and from the viewpoint of fragrance intensity when the functional base is a perfume, the content is 1% by mass or less, preferably 0.5% by mass or less, and more preferably 0.5% by mass or less. It is 0.3% by mass or less.

<Other useful ingredients>
The liquid laundry composition of the present invention may optionally contain other useful ingredients shown below.
(E) Organic solvent having one or more hydroxyl groups in the molecule (E) Organic solvent having one or more hydroxyl groups in the molecule An organic solvent having a hydroxyl group and an ether group is preferred. Such organic solvents include one or more compounds selected from the following (e1) to (e6).

(e1) Monohydric alcohol having an aliphatic hydrocarbon group having 2 to 6 carbon atoms, for example, one or more selected from ethanol, 1-propanol, 2-propanol and 1-butanol.
(e2) a divalent to hexavalent alcohol having 2 to 6 carbon atoms [excluding (e3)]
For example, one or more selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol and glycerin.
(e3) Polyalkylene glycol containing an alkylene glycol unit having 2 to 4 carbon atoms For example, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol having a weight average molecular weight of 400 to 4000 and one or more selected from polypropylene glycols having a weight average molecular weight of 400 or more and 4000 or less.

(e4) a (mono- or poly)alkylene glycol monoalkyl ether having an alkylene glycol unit having 2 to 4 carbon atoms and an alkyl group having 1 to 4 carbon atoms, such as diethylene glycol monomethyl ether and triethylene glycol monomethyl ether , one or more selected from diethylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, diethylene glycol monobutyl ether, 1-methoxy-2-propanol and 1-ethoxy-2-propanol .
(e5) Alkyl glyceryl ether having alkyl having 1 to 8 carbon atoms, such as 1-methylglycerin ether, 2-methylglycerin ether, 1,3-dimethylglycerin ether, 1-ethylglycerin ether, 1,3-diethylglycerin One or more selected from ether, triethylglyceryl ether, 1-pentylglyceryl ether, 2-pentylglyceryl ether, 1-octylglyceryl ether and 2-ethylhexylglyceryl ether.

(e6) Aromatic alkyl ether of (mono- or poly)alkylene glycol having an alkylene glycol unit having 2 or 3 carbon atoms, such as 2-phenoxyethanol, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene having an average molecular weight of about 480 One or more selected from glycol monophenyl ether, 2-benzyloxyethanol and diethylene glycol monobenzyl ether.
(E) The organic solvent is one or more selected from the above (e1), (e2), (e4), and (e6) from the viewpoint of solubilizing the surfactant and improving the antiseptic property of the composition. Compounds are preferred, more preferably one or more selected from ethanol, propylene glycol, diethylene glycol monobutyl ether, 2-phenoxyethanol, diethylene glycol monophenyl ether and triethylene glycol monophenyl ether, one or more selected from propylene glycol and diethylene glycol monobutyl ether is more preferred.

(F) Anionic Surfactant The liquid laundry composition of the present invention may contain (F) an anionic surfactant from the viewpoint of further improving the viscosity under low shear.
(F) The anionic surfactant is preferably an anionic surfactant having an aliphatic alkyl group having 8 to 20 carbon atoms and a sulfonate group. Specific examples of such anionic surfactants include one or more compounds selected from alkylbenzenesulfonates, alkylestersulfonates, and primary or secondary alkanesulfonate salts. The number of carbon atoms in the alkyl group is preferably 8 or more and 18 or less from the viewpoint of dispersion stability of (A) fatty acid glyceride in water, and preferably 10 or more and 16 or less from the viewpoint of solubility at the time of blending.
As the anionic surfactant (F), an alkylbenzene sulfonate having an aliphatic alkyl group having 10 or more and 16 or less carbon atoms is preferable from the viewpoint of further increasing the viscosity of the liquid laundry composition under low shear.

(G) Other Optional Components The liquid laundry composition of the present invention contains, for example, water-soluble inorganic salts such as alkanolamines, water-soluble polymers such as acrylic polymers, and sulfites to the extent that the effects of the present invention are not impaired. Optional components such as a reducing agent such as silicone, a foam suppressing agent such as silicone, a fluorescent dye, color particles, and a coloring agent can be contained. For example, in addition to the perfume capsules as the functional base in the component (D), a perfume for imparting the fragrance of the composition itself, a dye for coloring the liquid laundry composition, and the like can be contained.

<Water>
The liquid laundry compositions of the present invention contain water. Water is not particularly limited, and water selected from tap water, distilled water, ion-exchanged water, and sterilized water containing 1 mg/kg or more and 5 mg/kg or less of hypochlorite in ion-exchanged water can be used.
The content of water is the balance of the total amount of components (A) to (D) and optional components, preferably 70% by mass or more, more preferably 75% by mass or more, and preferably 98% by mass or less. , more preferably 95% by mass or less.

<Viscosity of laundry liquid composition>
From the viewpoint of ensuring good handleability, the liquid laundry composition of the present invention is measured at a temperature of 20 ° C. after operating at a rotor rotation speed of 60 rpm for 1 minute in the measurement method using a Brookfield viscometer described in the Examples. is preferably 1000 mPa·s or less, more preferably 850 mPa·s or less, and still more preferably 750 mPa·s or less.
From the viewpoint of (A) obtaining thixotropic properties from the fatty acid glyceride and (D) the dispersion stability of the non-water-soluble carrier supporting the functional base, the liquid laundry composition of the present invention is described in the Examples. In the measurement method using a Brookfield viscometer, the viscosity at a temperature of 20 ° C. after operating for 1 minute at a rotor rotation speed of 60 rpm, standing for 1 minute, and operating at a rotor rotation speed of 6 rpm for 1 minute (at low shear viscosity) is preferably 400 mPa s or more, more preferably 450 mPa s or more, still more preferably 500 mPa s or more, and preferably 1500 mPa s or less, more preferably 1000 mPa s or less, and still more preferably 850 mPa・It is less than or equal to s.
If the viscosity of the liquid laundry composition of the present invention under low shear is 400 mPa·s or more, it can be said that the liquid laundry composition exhibits thixotropic properties.

<Method for producing liquid laundry composition>
The liquid laundry composition of the present invention can be produced by a method according to the production method described in Patent Document 1 above. Preferably, a method having steps 1 to 3 below is exemplified.
Step 1: Step of preparing a thixotropy-imparting agent containing component (A), component (B), and water Step 2: Step of preparing a liquid composition containing component (C) and water Step 3: Step Step of mixing the thixotropy-imparting agent obtained in 1 and the liquid composition obtained in step 2, and mixing the obtained mixture with the component (D) to obtain a liquid laundry composition Prepared in step 2 The liquid composition used can further contain one or more selected from component (E), component (F), and other optional components as appropriate.

<raw materials>
Compounds and deionized water for making the liquid laundry compositions of the present invention were prepared as follows.
(A) fatty acid glyceride hydrogenated castor oil (iodine value 1.5 g-I ₂ /100 g)
(B) nonionic surfactant B-1: polyoxyethylene (6) lauryl ether (HLB: 10.5)
B-2: Polyoxyethylene (4) lauryl ether (HLB: 9.7)
B-3: Polyoxyethylene (10) lauryl ether (HLB: 13.9)
[The number in ( ) is the average number of added moles of the oxyethylene group]
HLB was calculated based on the average added mole number of oxyethylene groups according to the Griffin method.
(C) Cationic surfactant C-1: N,N-didecyl-N-methyl-N-ethylammonium ethylsulfate C-2: N-ethyl-N,N-dimethyl-N-tetradecylammonium ethylsulfate C -3: Alkyl (C12-16) benzyldimethylammonium chloride

(D) Non-water-soluble carrier supporting functional base Non-water-soluble carrier (perfume microcapsule) supporting the perfume obtained in Synthesis Example 1 below
Synthesis example 1
After neutralizing 1.7 g of a diisobutylene-maleic anhydride copolymer ("Demoll EP" manufactured by Kao Corporation, solid content 25% by mass) with hydrochloric acid and further diluting with deionized water, the solid content was 3%. , pH 4.3. Next, 36 g of the fragrance composition having the composition shown in Table 1 was added to 100 g of the diisobutylene-maleic anhydride copolymer aqueous solution, emulsified using a homomixer, and heated to 50°C. Next, an aqueous solution obtained by mixing 12 g of a partially methylolated melamine resin (“Cymel 385” manufactured by Cytec Industries Inc, solid content of 80% by mass) and 35 g of ion-exchanged water was added dropwise. This was held at 50°C for 2 hours, further held at 70°C for 1 hour, and further held at 80°C for 3 hours to complete microencapsulation of the perfume. After that, the mixture was allowed to cool to obtain a perfume microcapsule slurry having an average particle size of 7 μm and an effective content of 30% by mass.

(E) organic solvent diethylene glycol monobutyl ether (F) anionic surfactant alkylbenzene sulfonate (LAS)

Preparation Example 1 (Preparation of thixotropic agent)
In a glass beaker with a capacity of 100 mL, (A) 1.5 g (2.9% by mass) of hydrogenated castor oil, (B-3) 2.5 g (4.9% by mass) of polyoxyethylene lauryl ether (HLB: 11.5) ), 47.5 g (92.2% by mass) of ion-exchanged water were added, and a stirrer having a diameter of 1 cm and a length of 3.5 cm was placed. The beaker was heated in a water bath so that the temperature of the content was in the range of 90°C or higher and 95°C or lower. Next, in the temperature range of 90 ° C. or higher and 95 ° C. or lower, using a 6-unit magnetic stirrer (“RS-60D” manufactured by AS ONE Corporation), at 600 rpm to room temperature 25 ° C. at a cooling rate of 1.0 ° C./min. After cooling, a thixotropic agent was obtained.

Example 1 (Production of liquid laundry composition)
(1) Preparation of liquid composition In a glass beaker with a capacity of 100 mL, (B-1) polyoxyethylene (6) lauryl ether 7.4 g (8.2% by mass), (B-2) polyoxyethylene (4) Lauryl ether 3.0 g (3.3% by mass), (C-1) N,N-didecyl-N-methyl-N-ethylammonium ethyl sulfate 1.8 g (2.0% by mass), (E) diethylene glycol mono 10.0 g (11.1% by mass) of butyl ether, 1.0 g (1.1% by mass) of coconut oil fatty acid, 0.4 g (0.4% by mass) of alkanolamine, 1.2 g (1.3% by mass) of acrylic polymer %), 65.5 g (72.4% by mass) of ion-exchanged water, 0.15 g (0.2% by mass) of Proxel BDN (preservative), a 6-unit magnetic stirrer (manufactured by AS ONE Corporation "RS-60D ”) was used to prepare a liquid composition while stirring at 600 rpm and room temperature of 25°C.

(2) Preparation of Liquid Laundry Composition 10 g of the thixotropy-imparting agent obtained in Preparation Example 1 and 90 g of the liquid composition obtained in (1) above were placed in a glass beaker having a capacity of 100 mL. After stirring at 100 rpm for 5 minutes with a 2 cm Teflon (registered trademark) rod-shaped stirrer piece, 1.4 g of ion-exchanged water was added to 0.7 g of the fragrance microcapsules (D) obtained in Synthesis Example 1. The mixed perfume capsule dilution water was added and stirred for an additional 5 minutes to prepare a liquid laundry composition.

Examples 2-13, Comparative Examples 1-3
A liquid laundry composition was prepared in the same manner as in Example 1 except that each component of the liquid laundry composition was changed to the formulation shown in Table 2.

The liquid laundry compositions obtained in Examples and Comparative Examples were evaluated for dispersion stability, weighability and viscosity after storage by the following methods. Table 2 shows the results.

<Evaluation of dispersion stability>
〔Preservation method〕
30 mL of the liquid laundry composition was filled into a 50 mL glass bottle (standard bottle No. 6) and sealed under atmospheric pressure. These were stored in constant temperature baths at 50°C, 40°C, 25°C and -5°C for 20 days with the stopper facing upward. After the storage was completed, the samples were allowed to stand at 25° C. for 24 hours with the stopper facing upward.
〔Evaluation method〕
Regarding the appearance of the liquid laundry composition stored by the above method, the condition after storage at 50°C, 40°C, 25°C and -5°C for 20 days was judged according to the following criteria. Changes in appearance were visually observed for the presence or absence of a transparent separation layer. If the change in viscosity before and after storage was within ±20 mPa s, it was judged as “no change in viscosity”, and if it exceeded ±20 mPa s, it was judged as “change in viscosity”. and
〔Evaluation criteria〕
5: No change in appearance and no change in viscosity after storage 4: No change in appearance and no change in viscosity after storage 3: Slightly separated layer after storage and no change in viscosity 2: Slightly separated layer after storage and viscosity Changed 1: Completely separated Dispersion stability is preferably 4 or more, more preferably 5.

<Evaluation of Weighability>
Regarding the weighability of the liquid laundry composition, the liquid laundry composition was filled into the main body bottle after washing the container of the commercially available liquid laundry detergent ("Fragrance New Beads Gel Hanashizuku no Kaori" manufactured by Kao Corporation). The state in which the liquid was cap-weighed was judged according to the following criteria.
〔Evaluation criteria〕
3: Easy to pour into the cap, little liquid remains on the inner wall of the cap after weighing.
2: Easy to pour into the cap, but a little more liquid adheres to the inner wall of the cap and mouth after weighing.
1: It is difficult to pour into the cap, and much liquid adheres to the inner wall and mouth of the cap after weighing.
As the meterability, 2 or more is preferable, and 3 is more preferable.

<Measurement of Viscosity of Liquid Laundry Composition>
A beaker containing the liquid laundry composition was placed in a constant temperature bath, and the temperature of the liquid laundry composition was adjusted to 20±1°C. A B-type viscometer (TVB-10M manufactured by Toki Sangyo Co., Ltd.) was equipped with rotor No. 2 was installed, and the viscosity was measured after operating at a rotational speed of 60 rpm for 1 minute, then allowed to stand still for 1 minute, and after operating at a rotational speed of 6 rpm for 1 minute, the viscosity was measured.
If an upward arrow is displayed next to the value displayed on the display, the rotor No. sequentially No. 3, No. 4 and measured. The displayed value when the upward arrow was no longer displayed was taken as the viscosity. The viscosity after operating at a rotation speed of 6 rpm for 1 minute is a measure of viscosity balance and rheological properties, and a value of 400 mPa·s or more is acceptable, and a higher value is more preferable.

As shown in Table 2, the liquid laundry composition of the present invention was excellent in viscosity balance and rheological properties, excellent in dispersion stability after storage, and also excellent in meterability. On the other hand, the above effects were not obtained with the liquid laundry composition of the comparative example.

Claims (6)

A liquid laundry composition containing the following components (A) to (D) and water,
(A) 0.11 % by mass or more and 2 % by mass or less of a fatty acid glyceride having a hydroxyl group in the aliphatic acyl group;
(B) a nonionic surfactant,
(C) a cationic surfactant that is a quaternary ammonium salt type surfactant represented by the following general formula (2): 0.1% by mass or more and 2.0% by mass or less;
(D) a water-insoluble carrier having an average particle size of 5 μm or more and 30 μm or less supporting a functional base: 0.1% by mass or more and 1% by mass or less;
The total content of component (B) and component (C) is 5.5% by mass or more and 12% by mass or less,
A liquid laundry composition, wherein the mass ratio [(B)/(C)] of component (B) to component (C) is 6.7 or more and 30 or less.

[In the formula, R ¹¹ is a linear or branched hydrocarbon group having 8 to 18 carbon atoms, and ^may contain —(A ³ O) _s —. A ³ O is an ethyleneoxy group or a propyleneoxy group, and s indicates the average number of added moles of A ³ O and is a number of 1 or more and 10 or less. R ¹² is a hydrocarbon group in the same range as R 11, or an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a hydroxyalkyl group having 1 to 3 carbon atoms, and R ^{13 and} R ¹⁴ are , each independently an alkyl group having 1 to 3 carbon atoms, a benzyl group, or a hydroxyalkyl group having 1 to 3 carbon atoms, and X — is CH ³ SO ₄ − _, ^CH 3 _CH 2 _SO 4 ₋ ^, or a halide is an ion. ] 2. The liquid laundry composition according to claim 1, wherein (B) the HLB of the nonionic surfactant according to the Griffin method is 9.5 or more and 12.5 or less. 3. The liquid laundry composition according to claim 1, wherein (B) the nonionic surfactant is a compound represented by the following general formula (1).
R ¹ O—(A ¹ O) _x H (1)
[In the formula, R ¹ is a hydrocarbon group having 8 to 22 carbon atoms, and A ¹ O is an alkyleneoxy group having 2 to 5 carbon atoms. x represents the average number of added moles of A ¹ O, and is a number of 3 or more and 35 or less, and when A ¹ O is an ethyleneoxy group, x is 3 or more, and in the case of an alkyleneoxy group other than an ethyleneoxy group , x is 5 or less. ] The liquid laundry composition according to any one of claims 1 to 3 , which has a viscosity of 1000 mPa s or less at a temperature of 20°C after being operated at a rotor speed of 60 rpm for 1 minute using a Brookfield viscometer. . A liquid laundry composition according to any one of claims 1 to 4 , wherein the liquid laundry composition exhibits thixotropic properties. Using a Brookfield viscometer, operate for 1 minute at a rotor rotation speed of 60 rpm, allow to stand for 1 minute, operate at a rotor rotation speed of 6 rpm for 1 minute, and then the viscosity at a temperature of 20 ° C. is 400 mPa s or more. 6. The liquid laundry composition of claim 5 , wherein