JP2021181510A - Powder detergent composition for clothing - Google Patents

Abstract

To provide a powder detergent composition for clothing that allows a worker to quickly and visually confirm dirt-releasing to detergent liquid in which clothing is immersed, and enables comfortable hand-washing operations.SOLUTION: A powder detergent composition for clothing contains 3 mass% or more and 30 mass% or less of a following component (a), 1 mass% or more and 20 mass% or less of a component (b), 1 mass% or more and 10 mass% or less of a component (c), 3 mass% or more and 30 mass% or less of a component (d), and 3 mass% or more and 20 mass% or less of a component (e). A mass ratio (d)/(c) of a content of the component (d) to a content of the component (c) is 3 or more and 30 or less, and a mass ratio (e)/(c) of a content of the component (e) to a content of the component (c) is 0.8 or more and 20 or less. Component (a): anionic surface active agent. Component (b): white insoluble matter. Component (c): water-soluble aluminum salt. Component (d): water-soluble divalent metal salt. Component (e): one or more kinds of inorganic polymers selected from polysilicate, polyborate and polyphosphate.SELECTED DRAWING: None

Description

The present invention relates to a powder detergent composition for clothing and a method for cleaning clothing.

There are roughly two types of washing methods for textile products such as clothing: hand washing and washing machine washing. In recent years, the spread of washing machines in the Asian region has been increasing, but hand-washing is widely used because of its detergency, economy, cultural background, and washing consciousness. Since the operator can wash the clothes while checking the degree of dirt removal, the hand-washing washing is suitable for washing not only the entire dirt attached to the fibers but also the dirt such as partial food spills. In hand-washing, many workers wash their clothes with a detergent, for example, a cleaning solution obtained by dissolving powdered detergent in water.

As the powder detergent for clothing, those containing a surfactant such as an anionic surfactant, a metal salt such as a magnesium salt, and a zeolite are known.

Patent Document 1 describes (a) anionic surfactants, (b) water-soluble aluminum salts, (c) alkali metal sulfates or alkali metal chlorides, (d) specific alkaline agents, and (e) specific carboxylic acids. Alternatively, it contains a specific hydroxycarboxylic acid in a specific amount, the mass ratio of the component (e) to the component (b), the component (e) / component (b) is 0 or more and 0.5 or less, and 1 g is added to 250 g of water. Disclosed is a powder cleaning composition for clothing, wherein the dispersed dispersion has a pH of 5.5 or more and 9.5 or less at 20 ° C.

Patent Document 2 describes (a) an anionic surfactant, (b) one or more compounds selected from magnesium sulfate, magnesium chloride, aluminum sulfate and aluminum chloride, and (c) elements of Group 2 to Group 16 of the Periodic Table of the Elements. Metallic elements belonging to the 4th and 5th cycles, (d) one or more inorganic polymers selected from polysilicates, polyborates and polyphosphates, (e) one or more compounds selected from zeolites and bentonites. A specific amount is contained, and the mass ratio of the content of the component (b) to the content of the component (e) [content of the component (b)] / [content of the component (e)] is 0.08. The above is 10 or less, and the mass ratio of the content of the component (d) to the content of the component (e) [content of the component (d)] / [content of the component (e)] is 0. A powder cleaning agent composition for clothing, which is 20 or more and 20 or less, is disclosed.

Japanese Unexamined Patent Publication No. 2017-014495 Japanese Unexamined Patent Publication No. 2019-189728

Hand washing Washing is a work that involves physical and mental fatigue, and it is hoped that the worker can finish the work as soon as possible. At the time of hand-washing, the worker may immerse the clothes in the washing liquid and leave the clothes for a certain period of time, and then perform the hand-washing. At that time, the worker shifts to the hand-washing work after confirming that the dirt from the clothes has been transferred to the cleaning liquid. That is, if it can be promptly confirmed that the stains are transferred from the clothes to the cleaning liquid by the immersion, the time until the subsequent hand-washing work is shortened, which leads to the shortening of the entire washing time. In addition, in hand-washing, it should give a comfortable feel to the hands during hand-washing work, such as less sliminess during hand-washing and rinsing, and less residual feeling of the powder detergent composition for clothing during hand-washing and rinsing. Is required to be able to do.

INDUSTRIAL APPLICABILITY The present invention provides a powder detergent composition for clothes, which allows an operator to quickly visually recognize that stains are released into a washing liquid in which clothes are immersed, and is comfortable for hand washing work.

In the present invention, the following component (a) is 3% by mass or more and 30% by mass or less, (b) component is 1% by mass or more and 20% by mass or less, (c) component is 1% by mass or more and 10% by mass or less, (d). The component is contained in an amount of 3% by mass or more and 30% by mass or less, and the component (e) is contained in an amount of 3% by mass or more and 20% by mass or less.
The mass ratio (d) / (c) of the content of the component (d) to the content of the component (c) is 3 or more and 30 or less.
The present invention relates to a powder detergent composition for clothing, wherein the mass ratio (e) / (c) of the content of the component (e) to the content of the component (c) is 0.8 or more and 20 or less.
(A) Component: Anionic surfactant (b) Component: White insoluble matter (c) Component: Water-soluble aluminum salt (d) Component: Water-soluble divalent metal salt (e) Component: Polysilicic acid, polyboric acid and polyphosphate One or more inorganic polymers selected from salts

The present invention also relates to a method for washing clothes, which is to wash clothes using a washing liquid containing the powder cleaning agent composition for clothes of the present invention and water.

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a powder detergent composition for clothing, which allows an operator to quickly visually recognize that stains are released into the cleaning liquid in which clothing is immersed. When the dirty clothing is immersed in the cleaning solution using the powder cleaning agent composition for clothing of the present invention, the operator can quickly confirm that the stains from the clothing are transferred to the cleaning solution. Hereinafter, in the present specification, excellent effect of the above invention or enhancement of the effect of the above invention may be referred to as excellent visibility of dirt release or further enhancement of visibility of dirt release. Further, the clothes powder detergent composition of the present invention has less sliminess during hand washing and rinsing, and less residual feeling of the clothes powder detergent composition during hand washing and rinsing. You can give your hands a comfortable feel.

<Powder detergent composition for clothing>
[(A) component]
(A) The component is an anionic surfactant. Specific examples of the component (a) include one or more anionic surfactants selected from the following components (a1), (a2), (a3) and (a4).
(A1) Component: Alkyl or alkenyl sulfate ester salt (a2) Component: Polyoxyalkylene alkyl or alkenyl ether sulfate ester salt having an alkyleneoxy group (a3) Component: Anionic surfactant having a sulfonic acid base (a4) Component: A fatty acid having 12 or more and 24 or less carbon atoms or a salt thereof.

As the component (a1), more specifically, one or more selected from an alkyl sulfate ester salt having an alkyl group having 10 or more and 18 or less carbon atoms and an alkenyl sulfate ester salt having an alkenyl group having 10 or more and 18 or less carbon atoms. Anionic surfactants can be mentioned. From the viewpoint of further enhancing the visibility of stain release, the component (a1) is preferably one or more anionic surfactants selected from alkyl sulfates having 12 or more and 14 or less carbon atoms of the alkyl group, and the carbon of the alkyl group. More preferably, one or more anionic surfactants selected from sodium alkylsulfates having a number of 12 or more and 14 or less.

As the component (a2), more specifically, the polyoxyalkylene alkyl ether sulfate ester salt having an alkyl group having 10 or more and 18 or less carbon atoms and having an alkylene oxide average addition molar number of 1 to 3 or less and the alkenyl group having carbon atoms. Examples thereof include one or more anionic surfactants selected from polyoxyalkylene alkenyl ether sulfate ester salts having 10 or more and 18 or less and an average number of moles of alkylene oxide added of 1 or more and 3 or less. Examples of the oxyalkylene group include an oxyalkylene group having 2 or more and 3 or less carbon atoms. Examples of the oxyalkylene group having 2 or more and 3 or less carbon atoms include one or more groups selected from an oxypropylene group and an oxyethylene group. From the viewpoint of further enhancing the visibility of stain release, the component (a2) is preferably a polyoxyethylene alkyl ether sulfate ester salt having an average number of moles of ethylene oxide added of 1 or more and 2.2 or less, and an alkyl group having 12 or more carbon atoms. Polyoxyethylene alkyl ether sulfate esters having 14 or less and an average number of moles of ethylene oxide added of 1 or more and 2.2 or less are more preferable, and these sodium salts are even more preferable.

The anionic surfactant having a sulfonic acid base as a component (a3) represents an anionic surfactant having a sulfonate as a hydrophilic group.
As the component (a3), more specifically, an alkylbenzene sulfonate having an alkyl group having 10 or more and 18 or less carbon atoms, an alkenylbenzene sulfonate having an alkenyl group having 10 or more and 18 or less carbon atoms, and an alkyl group having 10 or less carbon atoms. Alkyl sulfonate of 10 or more and 18 or less, α-olefin sulfonate having 10 or more and 18 or less carbon atoms in the α-olefin moiety, α-sulfo fatty acid salt and fatty acid moiety having 10 or more and 18 or less carbon atoms in the fatty acid moiety. Examples thereof include one or more anionic surfactants selected from α-sulfosulphonic acid lower alkyl ester salts having 10 or more and 18 or less carbon atoms and 1 or more and 5 or less carbon atoms in the ester moiety. From the viewpoint of excellent visibility of stain release, the component (a3) is preferably an alkylbenzene sulfonate having an alkyl group having 11 or more and 16 or less carbon atoms, and a sodium alkylbenzene sulfonate having an alkyl group having 11 or more and 16 or less carbon atoms. More preferred.

The component (a4) is a fatty acid having 12 or more and 24 or less carbon atoms or a salt thereof. A fatty acid having 12 or more and 24 or less carbon atoms or a salt thereof is an anionic surfactant having an aliphatic hydrocarbon group having 11 or more and 23 carbon atoms as a hydrophobic group and a carboxylic acid or a salt thereof as a hydrophilic group. More specific examples of the component (a4) include lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid and salts thereof.

As the salt of the anionic surfactant as the component (a), an alkali metal salt is preferable, a sodium salt or a potassium salt is more preferable, and a sodium salt is further preferable.

The powder detergent composition for clothing of the present invention contains one or more anionic surfactants selected from the component (a1) and the component (a3) as the component (a) from the viewpoint of further enhancing the visibility of stain release. It is preferably contained, and it is more preferable to contain one or more anionic surfactants selected from the component (a3).
From the viewpoint of further enhancing the visibility of stain release, the powder detergent composition for clothing of the present invention has the number of carbon atoms of the alkylbenzene sulfonate and the alkenyl group having an alkyl group of 10 or more and 18 or less as the component (a). It is more preferable to contain one or more anionic surfactants selected from alkenylbenzene sulfonates having a value of 10 or more and 18 or less.
The powder detergent composition for clothing of the present invention is one or more selected from alkylbenzene sulfonates having an alkyl group having 10 or more and 18 or less carbon atoms as the component (a) from the viewpoint of further enhancing the visibility of stain release. It is more preferable to contain the anionic surfactant of. In the powder detergent composition for clothing of the present invention, the proportion of the alkylbenzene sulfonate having an alkyl group having 10 or more and 18 or less carbon atoms is 50% by mass or more in the total (a) component in the detergent composition. It is preferably 60% by mass or more, more preferably 70% by mass or more, and preferably 100% by mass or less.

[(B) component]
The component (b) is a white insoluble matter. The white insoluble substance is a substance having a whiteness of 50% or more (ISO2470) that dissolves less than 1 g in 100 g of water at 20 ° C.

Examples of the white insoluble matter of the component (b) include one or more compounds selected from zeolite, bentonite, sericite, and talc, and from the viewpoint of storage stability of the powder detergent for clothing, from zeolite and bentonite. One or more selected compounds are more preferred, and zeolites are even more preferred.

Zeolites are also called crystalline aluminosilicates. As a specific zeolite, crystalline aluminosilicates such as A-type, X-type, and P-type zeolite can be contained. The average primary particle size is preferably 0.1 μm or more, more preferably 1 μm or more, and preferably 10 μm or less, more preferably 5 μm or less. Suitable crystalline aluminosilicates are type A zeolites (for example, trade name "Toyo Builder": manufactured by Tosoh Corporation, oil absorption capacity by JIS K 5101 method: 40 mL / 100 g or more). In addition, P type (for example, trade names "Doucil A24", "ZSEO64", etc .; all manufactured by Crosfield; oil absorption capacity 60
~ 150 mL / 100 g), X-type (for example, trade name "WessalithXD"; manufactured by Degussa; oil absorption capacity 80-100 mL / 100 g), and the hybrid zeolite described in International Publication No. 98/42622 are also suitable.

Bentonite preferably has an ion exchange capacity of 50 to 100 meq / 100 g. Examples of bentonite include (b1) montmorillonite group mineral clay (smectitic clay) selected from the group consisting of alkali metal or alkaline earth metal montmorillonite, saponite or hectorite, (b2) illite, (b3) attapalgite and (B4) One or more selected from kaolinite can be mentioned. Bentonite can be granulated. For example, granulated products of clay minerals of JP-A-2008-189719 can be referred to.

[(C) component]
The component (c) is a water-soluble aluminum salt. Regarding the component (c), "water-soluble" means that 1 g or more is dissolved in 100 g of water at 20 ° C.
As the component (c), powdery or granular ones can be used.
Examples of the water-soluble aluminum salt include one or more selected from potassium alum (potassium aluminum sulfate), ammonium alum (aluminum ammonium sulfate), sodium alum (aluminum sodium sulfate), aluminum sulfate, aluminum acetate, aluminum chloride, and aluminum nitrate. Will be.
The water-soluble aluminum salt may be a hydrate. Hydrate of water-soluble aluminum salt includes potassium aluminum sulfate dodecahydrate, sodium aluminum sulfate dodecahydrate, ammonium aluminum sulfate dodecahydrate, aluminum chloride hexahydrate and aluminum sulfate 13-18 hydrate. One or more water-soluble aluminum salts selected may be mentioned.

(C) As a component, one or more selected from aluminum sulfate, aluminum chloride, potassium alum, ammonium alum, sodium alum, aluminum acetate, aluminum nitrate and hydrates thereof from the viewpoint of improving the comfort of hand washing work. Water-soluble aluminum salts are preferred, and one or more water-soluble aluminum salts selected from aluminum sulfate, aluminum chloride, potassium alum, ammonium alum, sodium alum and hydrates thereof are more preferable, aluminum sulfate, aluminum chloride and these. One or more water-soluble aluminum salts selected from the hydrates of Alum are more preferred.

[(D) component]
The component (d) is a water-soluble divalent metal salt. Regarding the component (d), "water-soluble" means that 1 g or more is dissolved in 100 g of water at 20 ° C.
As the component (d), powdery or granular ones can be used.

The component (d) includes one or more selected from magnesium sulfate, magnesium chloride, iron (II) oxide, iron (II) chloride, and zinc acetate.
The water-soluble divalent metal salt may be a hydrate. Hydrate of water-soluble divalent metal salt includes magnesium sulfate monohydrate, magnesium sulfate hexahydrate, magnesium sulfate heptahydrate, magnesium sulfate dodecahydrate, magnesium chloride hexahydrate, iron chloride. (II) One or more selected from tetrahydrate and zinc acetate dihydrate.

The component (d) is one or more selected from magnesium sulfate, magnesium chloride, iron (II) oxide, iron (II) chloride, zinc acetate, and hydrates thereof from the viewpoint of further enhancing the visibility of stain release. Is preferable, and one or more selected from magnesium sulfate, magnesium chloride, and hydrates thereof are more preferable.

[(E) component]
The component (e) is one or more inorganic polymers selected from polysilicates, polyborates and polyphosphates.

Here, the polysilicate refers to a silicate containing a polymerization mode in which an adjacent silicon atom is bonded to another silicon atom via an oxygen atom. The polysilicate can be obtained as a polymer of one or more compounds selected from, for example, orthosilicates, metasilicates and methanisilicates. Examples of the salt include alkali metal salts such as sodium salt and potassium salt.

Further, the polyborate refers to a borate containing a polymerization mode in which an adjacent boron atom is bonded to another boron atom via an oxygen atom. The polyborate can be obtained as a polymer of one or more compounds selected from, for example, orthoborate, metaborate, diborate and tetraborate. Examples of the salt include alkali metal salts such as sodium salt and potassium salt.

Further, the polyphosphate refers to a phosphate containing a polymerization mode in which an adjacent phosphorus atom is bonded to another phosphorus atom via an oxygen atom. The polyphosphate may be, for example, a pyrophosphate, a tripolyphosphate, as a polymer of one or more compounds selected from orthophosphates, metaphosphates, trimetaphosphates, pyrophosphates and tripoliphosphates. You can also get it. Examples of the salt include alkali metal salts such as sodium salt and potassium salt.

For example, in the case of polysilicic acid, from the viewpoint of further enhancing the visibility of stain release, the total amount of Q3 and Q4 with respect to the total amount of Q0, Q1, Q2, Q3 and Q4 in polysilicate. The proportion of the amount is preferably 50% by mass or more, further preferably 70% by mass or more, further preferably 90% by mass or more, still more preferably 99% by mass or more, and 100% by mass. It is as follows. The Q0 body, Q1 body, Q2 body, Q3 body, and Q4 body referred to here represent the structure of silicate. When the number of one silicon atom in the silicate bonded to the adjacent silicon atom via the oxygen atom is N, N = 4, that is, one silicon atom is four silicons via the oxygen atom. A structure bonded to an atom is called a Q4 body. When N = 3, it is called Q3 body, when N = 2, it is called Q2 body, when N = 1, it is called Q1 body, and when it does not contribute to polymerization at all, it is called Q0 body. That is, when the number of one silicon atom, boron atom or phosphorus atom (hereinafter referred to as a central atom) in the inorganic polymer bonded to another adjacent central atom via the oxygen atom is N. A structure in which N is 4 is a Q4 body, a structure in which N is 3 is a Q3 body, a structure in which N is 2 is a Q2 body, a structure in which N is 1 is a Q1 body, and N is a structure in which N is 0. Let the body be Q0. That is, the fact that the ratio of Q3 and Q4 is large means that polysilicic acid has a three-dimensional structure. In the present invention, the larger the ratio of the Q3 body and the Q4 body in the polysilicate containing the Q0 body, the Q1 body, the Q2 body, the Q3 body and the Q4 body, the higher the visibility of the dirt release can be improved. In the present invention, a compound containing a part of Q0 is also referred to as a polysilicate.

^{As described in Journal of Colloid and Interface Science 352 (2010) 309-315, 29} Si-NMR measurement was performed and Q0 body was calculated in order from the low magnetic field side for the calculation method of the ratio of Q3 body and Q4 body in the polysilicate. , Q1, Q2, Q3, Q4, and the sum of the peak areas of Q3 and Q4 divided by the sum of the peak areas of Q0, Q1, Q2, Q3, and Q4 is 100. Can be obtained as a value multiplied by. Similarly, polyborates and polyphosphates can also be obtained by measuring the NMR of a boron atom or a phosphorus atom.

The powder detergent composition for clothing of the present invention preferably contains a polysilicate as a component (e).

As the salt of the inorganic polymer as the component (e), an alkali metal salt is preferable, a sodium salt or a potassium salt is more preferable, and a sodium salt is further preferable.

[Composition, optional ingredients, etc.]
The powder detergent composition for clothing of the present invention contains the component (a) in an amount of 3% by mass or more and 30% by mass or less. The content of the component (a) in the composition is 3% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, and visibility of stain release from the viewpoint of further enhancing the cleaning performance. From the viewpoint of further enhancement, it is 30% by mass or less, preferably 28% by mass or less, more preferably 25% by mass or less, still more preferably 22% by mass or less, still more preferably 20% by mass or less.

The powder detergent composition for clothing of the present invention contains the component (b) in an amount of 1% by mass or more and 20% by mass or less. The content of the component (b) in the composition is 1% by mass or more, preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass, from the viewpoint of fluidity and non-caking property. From the viewpoint of further enhancing the visibility of dirt release, 20% by mass or less, preferably 18% by mass or less, more preferably 15% by mass or less, still more preferably 10% by mass or less, still more preferably 7% by mass. It is as follows.

The powder detergent composition for clothing of the present invention contains the component (c) in an amount of 1% by mass or more and 10% by mass or less. The content of the component (c) in the composition is 1% by mass or more, preferably 2% by mass or more, from the viewpoint of improving the comfort of hand washing work, and from the viewpoint of further enhancing the visibility of dirt release. 10% by mass or less, preferably 9% by mass or less, more preferably 8% by mass or less, still more preferably 7% by mass or less, still more preferably 6% by mass or less, still more preferably 5% by mass or less, still more preferably. It is 4% by mass or less, more preferably 3% by mass or less.

The powder detergent composition for clothing of the present invention contains the component (d) in an amount of 3% by mass or more and 30% by mass or less. The content of the component (d) in the composition is 3% by mass or more, preferably 4% by mass or more, more preferably 5% by mass or more, still more preferably 6% by mass, from the viewpoint of further enhancing the visibility of stain release. % Or more, and from the viewpoint of rinsability, it is 30% by mass or less, preferably 28% by mass or less, more preferably 25% by mass or less, still more preferably 22% by mass or less.

The powder detergent composition for clothing of the present invention contains the component (e) in an amount of 3% by mass or more and 20% by mass or less. The content of the component (e) in the composition is 3% by mass or more, preferably 5% by mass or more, more preferably 7% by mass or more, still more preferably 9% by mass, from the viewpoint of further enhancing the visibility of stain release. % Or more, and 20% by mass or less, preferably 18% by mass or less, more preferably 16% by mass or less, still more preferably 14% by mass or less, still more preferably 12% by mass or less.

In the powder detergent composition for clothing of the present invention, the mass ratio (d) / (c) of the content of the component (d) to the content of the component (c) is from the viewpoint of further enhancing the visibility of stain release. 3, or more, preferably 4 or more, more preferably 5 or more, and 30 or less, preferably 28 or less, more preferably 25 or less, still more preferably 22 or less, still more preferably 19 or less, still more preferably 16 or less. Is.

In the powder detergent composition for clothing of the present invention, the mass ratio (e) / (c) of the content of the component (e) to the content of the component (c) is from the viewpoint of further enhancing the visibility of stain release. , 0.8 or more, preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, still more preferably 4 or more, and 20 or less, preferably 18 or less, more preferably 15 or less, still more preferably 12. Below, it is even more preferably 10 or less.

In the powder detergent composition for clothing of the present invention, the mass ratio (d) / (b) of the content of the component (d) to the content of the component (b) is from the viewpoint of further enhancing the visibility of stain release. , Preferably 0.08 or more, more preferably 0.1 or more, still more preferably 0.2 or more, still more preferably 0.5 or more, still more preferably 0.8 or more, still more preferably 1.1 or more. , More preferably 1.4 or more, even more preferably 1.7 or more, even more preferably 2 or more, even more preferably 2.3 or more, even more preferably 2.6 or more, still more preferably 3 or more. , And more preferably 10 or less, more preferably 8 or less, still more preferably 6 or less.

In the powder detergent composition for clothing of the present invention, the mass ratio (e) / (b) of the content of the component (e) to the content of the component (b) is from the viewpoint of further enhancing the visibility of stain release. , Preferably 0.2 or more, more preferably 0.4 or more, still more preferably 0.6 or more, still more preferably 1 or more, still more preferably 1.5 or more, still more preferably 2 or more, still more preferably. 2.5 or more, more preferably 3 or more, even more preferably 3.5 or more, even more preferably 4 or more, even more preferably 4.5 or more, even more preferably 5 or more, and preferably 20 or less. , More preferably 18 or less, still more preferably 15 or less, still more preferably 13 or less, still more preferably 11 or less, still more preferably 10 or less.

The powder detergent composition for clothing of the present invention has other components known in the field of detergent for clothing, such as bleaching agents (perborates, bleaching activators, etc.), anti-recontamination agents, reducing agents (sulfates). Etc.), fluorescent whitening agents, foam suppressants (silicone, etc.), fragrances, enzymes (cellulase, protease, peptinase, lipase, dextranase, amylase, etc.), colorants, etc. can be contained.

In the powder detergent composition for clothing of the present invention, the pH of the 1% by mass aqueous solution measured at 20 ° C. described in JIS K 3362: 2008 is preferably 6.0 or more, more preferably 7. It is 0 or more, more preferably 7.5 or more, and preferably 11.0 or less, more preferably 10.7 or less, still more preferably 10.5 or less. Ion-exchanged water is used as the water of the aqueous solution.

In the powder detergent composition for clothing of the present invention, the water content in the composition by the heat loss method described in JIS K 3362: 2008 is preferably 1% by mass or more, more preferably 1% by mass or more, in terms of solubility and productivity. It is 2% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, and further preferably 6% by mass or less.

From the viewpoint of solubility, the powder detergent composition for clothing of the present invention has an apparent density of preferably 600 g / L or less, more preferably 550 g / L or less, as measured by the method specified by JIS K 3362: 2008. More preferably, it is 500 g / L or less. Further, from the viewpoint of convenience and reduction of waste, the apparent density is preferably 300 g / L or more, more preferably 350 g / L or more, and further preferably 380 g / L or more.

From the viewpoint of solubility, the powder detergent composition for clothing of the present invention has an average particle size of preferably 250 μm or more, more preferably 300 μm or more, still more preferably 350 μm or more, and preferably 650 μm or less. It is preferably 600 μm or less, more preferably 550 μm or less. Here, the average particle size is obtained from the mass fraction according to the size of the mesh after vibrating for 5 minutes using a standard sieve of JIS Z8801.

The powder detergent composition for clothing of the present invention may be surface-modified with a surface coating agent from the viewpoint of fluidity and non-caking property.

The powder detergent composition for clothing of the present invention can be produced by a known method. For example, spray drying method, dry neutralization method, dry granulation method, dry blending method, fluidized bed drying method, thin film drying method, extrusion granulation method, rolling granulation method, stirring granulation method, compaction granulation method, It can be produced by applying a surface active agent carrying method or a method selected from these and combined.

The powder detergent composition for clothing of the present invention is suitable for hand washing. Examples of the hand-washing method include a method of scrubbing clothes by hand, a method of rubbing clothes together by hand, and a method of scrubbing clothes with a tool such as a brush with a flocked fiber bundle.

<How to wash clothes>
Examples of the cleaning method using the powder cleaning agent composition for clothing of the present invention include a cleaning method in which clothing is washed using a cleaning liquid containing the powder cleaning agent composition for clothing of the present invention and water.

The content of the component (a) in the cleaning liquid is preferably 120 mg / kg or more, more preferably 400 mg / kg or more, still more preferably 600 mg / kg or more, and preferably 600 mg / kg or more, from the viewpoint of cleaning performance and visibility of stain release. Is 1200 mg / kg or less, more preferably 1120 mg / kg or less, still more preferably 1000 mg / kg or less, still more preferably 880 mg / kg or less, still more preferably 800 mg / kg or less.

The content of the component (b) in the cleaning liquid is preferably 40 mg / kg or more, more preferably 120 mg / kg or more, still more preferably 160 mg / kg or more, from the viewpoints of fluidity, non-caking property, and visibility of stain release. , More preferably 200 mg / kg or more, and preferably 800 mg / kg or less, more preferably 720 mg / kg or less, still more preferably 600 mg / kg or less, still more preferably 400 mg / kg or less.

The content of the component (c) in the cleaning liquid is preferably 40 mg / kg or more, more preferably 80 mg / kg or more, still more preferably 120 mg / kg or more, from the viewpoint of comfort of hand washing work and visibility of stain release. The amount is preferably 400 mg / kg or less, more preferably 360 mg / kg or less, still more preferably 320 mg / kg or less, still more preferably 280 mg / kg or less.

The content of the component (d) in the cleaning liquid is preferably 120 mg / kg or more, more preferably 160 mg / kg or more, still more preferably 200 mg / kg or more, still more preferably, from the viewpoint of visibility of stain release and rinsing property. Is 240 mg / kg or more, preferably 1200 mg / kg or less, more preferably 1120 mg / kg or less, still more preferably 1000 mg / kg or less, still more preferably 880 mg / kg or less.

The content of the component (e) in the cleaning liquid is preferably 120 mg / kg or more, more preferably 200 mg / kg or more, still more preferably 280 mg / kg or more, still more preferably 360 mg / kg or more from the viewpoint of visibility of stain release. It is kg or more, preferably 800 mg / kg or less, more preferably 720 mg / kg or less, still more preferably 640 mg / kg or less, still more preferably 560 mg / kg or less.

The mass ratio (d) / (c), mass ratio (e) / (c), mass ratio (d) / (b), and mass ratio (e) / (b) in the cleaning liquid are the clothing of the present invention, respectively. It can be selected from the same range as the powder cleaning agent composition for use.
The cleaning liquid can contain components (a) to (e) and components other than water.

The pH of the cleaning solution is preferably 6.0 or more and 11.0 or less. The pH of the cleaning liquid is more preferably 6.0 or more, further preferably 7.0 or more, still more preferably 7.5 or more, and even more preferably 11.0 or less, from the viewpoint of cleaning performance and hand feel. It is more preferably 10.7 or less, still more preferably 10.5 or less. The pH of the cleaning solution of the present invention can be measured using, for example, a glass electrode. The pH is measured at the temperature of the washing liquid at the time of washing, but may be measured at 25 ° C.

In the method for washing clothes of the present invention, it is preferable to wash clothes containing a washing liquid by hand.
Examples of the hand-washing method include a method of scrubbing clothes by hand, a method of rubbing clothes together by hand, and a method of scrubbing clothes with a tool such as a brush with a flocked fiber bundle.
In the case of hand washing, from the viewpoint of improving the detergency against oil stains, the powder detergent composition for clothes of the present invention is preferably 1 g or more, more preferably 2 g or more, still more preferably 3 g or more, with respect to 1 L of water. Then, it is preferably used at a concentration of 10 g or less, more preferably 9 g or less, still more preferably 8 g or less.

In the method for washing clothes of the present invention, it is preferable to wash the clothes after immersing the clothes in a washing liquid and leaving them to stand. In the method for washing clothes of the present invention, it is preferable to immerse the clothes in a washing liquid and leave them for 1 minute or more and 60 or less, and then wash the clothes. The leaving time is preferably 1 minute or more, more preferably 3 minutes or more, further preferably 5 minutes or more, and preferably 60 minutes or less, more preferably 50 minutes or less, still more preferably 40 minutes or less. .. The temperature of the cleaning liquid is preferably 20 ° C. or higher, more preferably 25 ° C. or higher, and preferably 45 ° C. or lower, more preferably 40 ° C. or lower at the start of immersion. The temperature may be maintained or may fluctuate during the period of standing. One of the features of the present invention is that when a dirty clothing is immersed in a cleaning solution prepared from the powder cleaning agent composition for clothing of the present invention, the operator can quickly confirm that the stain from the clothing is transferred to the cleaning solution. At the point. As a result, it is possible to shorten the time required for the entire washing because the work such as the hand washing to be continued is started earlier.

The alkalinity of the water used for preparing the washing liquid can be selected from 0 mg / L or more and 1000 mg / L or less. When water of unknown alkalinity is used, the alkalinity of the water can be measured by the following method.
[Measurement method of alkalinity]
Take 100 ml of test water in a 200 ml beaker and add 0.15 ml of bromocresol green-methyl red ethanol solution (manufactured by Wako Pure Chemical Industries, Ltd.) as an indicator. If there is residual chlorine in the test water, add a sodium thiosulfate solution (0.3 w / v%) to 100 ml of the test water in advance to remove the residual chlorine. Titrate the solution with 10 mmol / l sulfuric acid with gentle stirring until the color of the solution changes from blue to purplish red. The alkalinity is calculated by the following formula.
Alkaliity (CaCO ₃ mg / l) = a × 10
Here, a: 10 mmol / l sulfuric acid (ml) required for titration.
When discoloration due to the indicator is not clear, such as in a colored sample, a pH meter is used instead of the indicator, and the pH value of 10 mmol / l sulfuric acid (ml) required to reach 4.8 is defined as a.

The German hardness of the water used for washing can be 1 ° dH or more, further 2 ° dH or more, further 3 ° dH or more, and further 5 ° dH or more. On the other hand, the German hardness of water is 50 ° dH or less, preferably 40 ° dH or less, more preferably 30 ° dH or less, and more preferably 25 ° dH or less from the viewpoint of improving detergency.

The German hardness (° dH) as used herein refers to the concentration of calcium and magnesium in water at a CaCO ₃ equivalent concentration of 1 mg / L (mg / kg) = about 0.056 ° dH (1 ° dH = 17.8 mg). / Kg). The German hardness of the water used for cleaning can be adjusted, for example, based on a value calculated from the type and amount of hardness component added, as in the methods described in the examples herein. When water of unknown hardness such as tap water is used as the water used for washing, the German hardness of the water is determined by the chelatometric titration method using the ethylenediaminetetraacetic acid disodium salt described below. ..
The specific method for measuring the German hardness of water in the present specification is shown below.
<Measurement method of German hardness of water>
〔reagent〕
-0.01 mol / l EDTA-2Na solution: 0.01 mol / l aqueous solution of ethylenediaminetetraacetic acid disodium (titration solution, 0.01 M EDTA-Na2, manufactured by SIGMA-ALDRICH)
・ Universal BT indicator (Product name: Universal BT, manufactured by Dojin Chemical Research Institute Co., Ltd.)
Ammonia buffer solution for hardness measurement (a solution in which 67.5 g of ammonium chloride is dissolved in 570 ml of 28 w / v% ammonia water and the total volume is 1000 ml with ion-exchanged water).
[Measurement of German hardness]
(1) Collect 20 ml of water as a sample in a conical beaker with a whole pipette.
(2) Add 2 ml of ammonia buffer for hardness measurement.
(3) Add 0.5 ml of Universal BT indicator. Confirm that the solution after addition is purplish red.
(4) While shaking the conical beaker well, a 0.01 mol / l EDTA · 2Na solution is dropped from the burette, and the time when the sample water turns blue is defined as the end point of the titration. (5) The total hardness is calculated by the following formula.
Hardness (° dH) = T × 0.01 × F × 56.0774 × 100 / A
T: 0.01 mol / l EDTA · 2Na solution titration (mL)
A: Sample capacity (20 mL, volume of sample water)
F: Factor of 0.01 mol / l EDTA ・ 2Na solution

The washing method of the present invention can have a step of rinsing the washed clothes with water. The water used for rinsing preferably has the German hardness described above. The water used for rinsing preferably has the above-mentioned alkalinity. The water used for rinsing preferably has the German hardness and alkalinity described above.

(Preparation method of powder detergent composition)
The powder detergent compositions shown in Tables 1 to 3 were prepared using the following compounding ingredients.
Of the compounding components, the component (a) changes the mass of the component (a) below by 1.0% / min or less with respect to the initial mass of the measurement sample using an electric dryer (DN410H, manufactured by Yamato Kagaku Co., Ltd.). The one dried at 200 ° C. was used until the rate was reached.
Regarding the following component (e), sodium silicate (Fujifilm Wako Pure Chemical Industries, Ltd.), sodium tetraborate decahydrate (Fujifilm Wako Pure Chemical Industries, Ltd.), disodium hydrogen phosphate (Fujifilm Wako Pure Chemical Industries, Ltd.) The following component (e-1) is obtained by drying (Co., Ltd.) at 200 ° C. using the above electric dryer at 200 ° C. until the mass change rate is 1.0% / min or less with respect to the initial mass of the measurement sample. (E-2) component, (
e-3) Ingredients were obtained.

In the obtained dried product (a) component and (e) component, (b) component, (c) component, (d) component and sodium sulfate are mixed and stirred at the ratios shown in Tables 1 to 3 and mixed in the table. The powder detergent compositions shown in 1-3 were prepared. The following evaluation was performed using the obtained powder detergent composition. The results are shown in Tables 1-3.

(Ingredients)
(A) Ingredients- (a-1): LAS-Na, sodium laurylbenzene sulfonate, Neoperex G-15 (manufactured by Kao Corporation)
-(A-2): AS-Na, sodium lauryl sulfate, Emar 10G (manufactured by Kao Corporation)
-(A-3): AES-Na, polyoxyethylene lauryl ether sodium sulfate, Emar 270J (manufactured by Kao Corporation)
(A-4): Anionic surfactant in which α-SFE-Na, sodium α-sulfostearate methyl ester and sodium α-sulfopalmitic acid methyl ester are used in combination at a mass ratio of 8/2.

(B) Ingredients ・ (b-1): Zeolite, Synthetic zeolite, A-4, Powder, 75 μm (200mesh) pass, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. ・ (b-2): Bentonite, Kunipia F, Kunimine Made by Kogyo Co., Ltd.

(C) Ingredients ・ (c-1): Aluminum sulfate, Aluminum sulfate 14-18 hydrate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. ・ (c-2): Aluminum chloride, Aluminum chloride hexahydrate, Made by Fuji Film Wako Pure Chemical Industries, Ltd.

(D) Ingredients ・ (d-1): Magnesium sulfate, magnesium sulfate heptahydrate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. ・ (d-2): Magnesium chloride, magnesium chloride hexahydrate, Fujifilm Made by Wako Pure Chemical Industries, Ltd.

(E) Component- (e-1): Sodium polysilicate [Compound obtained by drying sodium silicate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) with an electric dryer as described above, degree of polymerization 99%]
(E-2): Sodium polyborate [a compound obtained by drying sodium tetraborate decahydrate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) with an electric dryer as described above. ]
(E-3): Sodium polyphosphate [a compound obtained by drying disodium hydrogen phosphate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) in an electric dryer as described above. ]

(Evaluation of degree of polymerization of sodium polysilicate)
^{Of the components (e), 29} Si-NMR was measured for (e-1) using ECA500 (manufactured by JEOL Ltd.) under the conditions of single pulse, 400 integration times, and 25 ° C. Q0, Q1, Q2, Q3, and Q4 were set in order from the low magnetic field side. The degree of polymerization of sodium polysilicate was obtained by multiplying the sum of the peak areas of Q3 and Q4 by the sum of the peak areas of Q0, Q1, Q2, Q3 and Q4 by 100. The larger this value is, the more the polymerization is proceeding.

(Water used for evaluation)
Unless otherwise specified, the water used in the following evaluation was water containing the following hardness components. Calcium chloride dihydrate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) 78.50 g and magnesium chloride hexahydrate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) 73.58 g with 1 L of ion-exchanged water. A dissolved concentrated undiluted solution was prepared. This concentrated stock solution had calcium / magnesium = 6/4 (molar ratio). The obtained concentrated stock solution was diluted with water for dilution having an alkalinity of 100 mg / L (CaCO ₃ equivalent) and a pH of 7.5, and used after adjusting to a German hardness of 10 ° dH. For the diluted water, sodium hydrogen carbonate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) is added to ion-exchanged water to adjust the alkalinity, and hydrochloric acid (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) is added. It was obtained by adjusting the pH.

(Turbidity evaluation method)
To a 500 mL glass beaker, 500 ml of water at 30 ° C. was added, and 2.0 g of the above powder detergent composition was added. The mixture was stirred for 5 minutes at a rotation speed of 200 rpm using a VELP jar tester portable FP4 (manufactured by Leona Co., Ltd.). After stirring, the container was transferred to a cylindrical container having an inner diameter of 5.0 cm, a height of 13 cm, and a black inside, and allowed to stand for another 5 minutes. The turbidity was measured with the lower end of the turbidity sensor TR-30 (manufactured by Kasa Principle Industrial Co., Ltd.) 5 cm from the bottom of the cylindrical container. It can be judged that the smaller the turbidity, the clearer the liquid at the measurement point, and the black color as the background becomes more conspicuous and advantageous for visually recognizing stains. The turbidity is 70 or less, but 60 or less is preferable, 50 or less is more preferable, 40 or less is further preferable, and 30 or less is further preferable.

(Evaluation of comfort of hand washing work)
8 g of powder detergent composition was diluted and dissolved in a 5.5 L polypropylene tub in 2 L of water with a German hardness of 10 ° DH, alkalinity of 100 mg / L (CaCO _{3 equivalent), pH of 7.5, and 25 ° C.} .. Next, 0.1 mL of commercially available S & B chili oil (manufactured by S & B Foods Co., Ltd.) was evenly applied on a 6 cm x 6 cm cotton knit cloth (cotton knit unsil, 100% cotton, Tanito Shoten) at a temperature of 25 ° C. It was dried at a humidity of 65 RH% for 15 hours. This was used as a cloth contaminated with chili oil. Then, one piece of underwear sewn with five prepared chili oil-contaminated cloths and two pieces of underwear of the same size for adjusting the bath ratio were put in and the whole was stirred. The bath ratio was 8. Gunze YG (round neck T-shirt, medium size, 100% cotton) was used for the underwear. Then, the contaminated cloth was evenly rubbed and washed by hand for 5 minutes. After rinsing twice with 3 L of water similar to the water used to dilute the composition, it was squeezed by hand to dehydrate and dried indoors.
The comfort of hand-washing work was evaluated based on the feel of the hands during and after washing. Specifically, (I) the feel of the hand during scrubbing, (II) the feel of the hand immediately after wiping the hand with a towel after scrubbing, rinsing and dehydration, and (III) wiping the hand with the towel. The feel of the hand was evaluated for the three periods of the feel of the hand 2 minutes after that. Each of the 10 panelists made the judgment based on the following criteria.
In the above (I) judgment criteria, the case of being slimy on the hand was defined as "very unpleasant" or "slightly unpleasant", and the case of being close to the feel of water was defined as "very comfortable" or "slightly comfortable". Further, the criteria of the above (II) and (III) are "very unpleasant" or "slightly unpleasant" when there is a residual feeling of the cleaning agent composition component, and when there is no residual feeling of the cleaning agent composition component. Was "very comfortable" or "slightly comfortable". The results of the three periods were collected from one panelist and the average value was calculated. The average value was collected for 10 people, and the average value was calculated and shown in the table. An average value of 2.5 or less was considered acceptable. The smaller the average value, the more favorable the feel.
5: Very uncomfortable 4: Somewhat unpleasant 3: Neither 2: Somewhat comfortable 1: Very comfortable

Claims (15)

The following component (a) is 3% by mass or more and 30% by mass or less, (b) component is 1% by mass or more and 20% by mass or less, (c) component is 1% by mass or more and 10% by mass or less, and (d) component is 3% by mass. % Or more and 30% by mass or less, and (e) component (e) is contained in 3% by mass or more and 20% by mass or less.
The mass ratio (d) / (c) of the content of the component (d) to the content of the component (c) is 3 or more and 30 or less.
A powder detergent composition for clothing, wherein the mass ratio (e) / (c) of the content of the component (e) to the content of the component (c) is 0.8 or more and 20 or less.
(A) Component: Anionic surfactant (b) Component: White insoluble matter (c) Component: Water-soluble aluminum salt (d) Component: Water-soluble divalent metal salt (e) Component: Polysilicic acid, polyboric acid and polyphosphate One or more inorganic polymers selected from salts The powder detergent composition for clothing according to claim 1, wherein the mass ratio (d) / (b) of the content of the component (d) to the content of the component (b) is 0.08 or more and 10 or less. .. The powder cleaning agent for clothing according to claim 1 or 2, wherein the mass ratio (e) / (b) of the content of the component (e) to the content of the component (b) is 0.2 or more and 20 or less. Composition. One of claims 1 to 3, wherein the component (a) is one or more anionic surfactants selected from the following components (a1), (a2), (a3) and (a4). The powder detergent composition for clothing according to.
(A1) Component: Alkyl or alkenyl sulfate ester salt (a2) Component: Polyoxyalkylene alkyl or alkenyl ether sulfate ester salt having an alkyleneoxy group (a3) Component: Anionic surfactant having a sulfonic acid base (a4) Component: A fatty acid having 12 or more and 24 or less carbon atoms or a salt thereof. (B) The powder detergent composition for clothing according to any one of claims 1 to 4, wherein the component is one or more compounds selected from zeolite and bentonite. (C) The powder detergent composition for clothing according to any one of claims 1 to 5, wherein the component is one or more selected from aluminum sulfate, aluminum chloride and hydrates thereof. (D) The powder detergent composition for clothing according to any one of claims 1 to 6, wherein the component is at least one selected from magnesium sulfate and magnesium chloride. (E) The powder detergent composition for clothing according to any one of claims 1 to 7, which contains a polysilicate as a component. The composition for a powder detergent for clothing according to any one of claims 1 to 8, wherein the component (e) is an inorganic polymer containing Q3 and Q4. (E) The ratio of the total amount of Q3 and Q4 to the total amount of Q0, Q1, Q2, Q3 and Q4 in the component is 50% by mass or more, according to claim 9. Powder detergent composition for clothing. The powder detergent composition for clothing according to any one of claims 1 to 10, which is for hand washing. A method for washing clothes, wherein the clothes are washed using a washing liquid containing the powder cleaning agent composition for clothes and water according to any one of claims 1 to 11. The method for washing clothes according to claim 12, wherein the clothes are washed by hand. The method for washing clothes according to claim 12 or 13, wherein the clothes are washed after being immersed in a washing liquid and left to stand. The method for washing clothes according to claim 14, wherein the clothes are soaked in a cleaning liquid and left to stand for 3 minutes or more and 60 minutes or less, and then the clothes are washed.