WO2023013456A1

WO2023013456A1 - Liquid detergent composition for textile products

Info

Publication number: WO2023013456A1
Application number: PCT/JP2022/028618
Authority: WO
Inventors: 真美今井; 優美野輪
Original assignee: 花王株式会社
Priority date: 2021-08-02
Filing date: 2022-07-25
Publication date: 2023-02-09
Also published as: JP2023021936A

Abstract

Provided is a liquid detergent composition for textile products, said composition containing water and a component (a), a component (b), and a component (c) below, wherein: the amount of the component (a) contained in the composition is 5-30 mass%; the amount of the component (c) contained in the composition is 2-20 mass%; and the mass ratio (c)/(b) of the component (c) content to the component (b) content is 1-15. Component (a): a surfactant Component (b): a copolymer containing an acrylic acid and a maleic acid as constituent monomers, or a salt thereof Component (c): a neutral inorganic salt containing monovalent cations

Description

Liquid detergent composition for textiles

The present invention relates to a liquid detergent composition for textiles and a method for cleaning textiles.

BACKGROUND ART Particle dirt such as mud adhering to textile products such as clothing is difficult to remove with a washing machine and may impair the washing finish. Improvement of finish is achieved.

Japanese Patent Publication No. 2001-524591 discloses an aqueous gel laundry detergent composition containing a structuring agent characterized by (a) an anionic surfactant, (b) fatty acid and (c) sodium sulfate. there is
U.S. Pat. No. 7,078,373 discloses (i) anionic surfactants, (ii) nonionic surfactants, (iii) optional cationic surfactants, (iv) optional detergent builders and (v) Laundry detergent compositions comprising polycarboxylic acid polymers are disclosed.
Japanese National Publication of International Patent Application No. 2012-533640 discloses a liquid washing or cleaning agent comprising a surfactant, a graying-inhibiting polysaccharide, a thickener and an inorganic salt.
U.S. Pat. No. 6,034,045 discloses a liquid laundry detergent comprising a surfactant, a copolymer of acrylic acid and maleic acid, water, and no carbonate builder, phosphorus-containing builder and phosphorus-containing sequestering agent. Agent compositions are disclosed.

SUMMARY OF THE INVENTION Particle stains such as mud adhering to textile products such as clothing tend to remain as colored stains on the textile products, which may impair the impression of the washing finish of the textile products. Therefore, there is a demand for a further improvement in detergency against particle stains.
In view of the above circumstances, the present invention provides a novel liquid detergent composition for textiles that is excellent in detergency against particle stains and storage stability.

The present invention contains the following components (a), (b), (c) and water, and the content of component (a) in the composition is 5% by mass or more and 30% by mass or less, and the composition In the medium, the content of component (c) is 2% by mass or more and 20% by mass or less, and the mass ratio (c)/(b) of the content of component (c) to the content of component (b) is 1 or more and 15 It is related with the liquid detergent composition for textiles which are the following.
(a) component: surfactant (b) component: copolymer containing acrylic acid and maleic acid as constituent monomers or a salt thereof (c) component: neutral inorganic salt containing a monovalent cation

The present invention also relates to a method for cleaning textiles, comprising contacting textiles with the liquid detergent composition for textiles.

According to the present invention, it is possible to provide a novel liquid detergent composition for textile products that is excellent in detergency against particle stains and storage stability.

MODES FOR CARRYING OUT THE INVENTION The reason why the liquid detergent composition for textile products of the present invention exerts excellent detergency against particle stains such as mud particles is not clear, but it is considered as follows.
By contacting the textile product with the surfactant as the component (a) and the neutral inorganic salt as the component (c), when mechanical force is applied to the textile product by rubbing washing or water flow, the textile product It is considered that the constituent fibers are easily displaced, and the detachment of particle dirt from the fibers is promoted.
In addition, the copolymer or its salt, which is the component (b), that is, the copolymer or its salt containing acrylic acid and maleic acid as constituent monomers, adsorbs to the particle dirt, and the steric repulsive force and electrostatic repulsive force It is thought to disperse the particle stains and prevent the particle stains from redepositing on the textile products. At this time, by selecting a predetermined neutral inorganic salt as the component (c) and using it in a predetermined ratio with respect to the component (b), without impairing the storage stability of the liquid detergent composition for textile products, It is believed that the amount of the component (b) adsorbed to the particle stains is increased and the detergency for the particle stains is improved. Note that the present invention is not restricted to this mechanism.

The liquid detergent composition for textile products of the present invention has improved detergency for particle stains such as mud particle stains, and thus can effectively remove visible stains.
When the visible dirt was not removed, even if the bacteria and odor were removed, the visual impression was that there was a tendency for the dirt, smell, and bacteria to remain. , Not only does it look good, but it also gives the impression that the smell and bacteria have been thoroughly washed. As a result, not only the cleansing effect for appearance, but also the cleansing effect for odors and germs can be realized.

The liquid detergent composition for textiles of the present invention (hereinafter referred to as the detergent composition of the present invention) contains the following components (a), (b), (c) and water.
(a) component: surfactant (b) component: copolymer containing acrylic acid and maleic acid as constituent monomers or a salt thereof (c) component: neutral inorganic salt containing a monovalent cation

The (a) component is a surfactant. Component (a) is one or more surfactants selected from anionic surfactants, nonionic surfactants, amphoteric surfactants and cationic surfactants, preferably anionic surfactants and One or more surfactants selected from nonionic surfactants, more preferably one or more surfactants selected from anionic surfactants. The detergent composition of the present invention preferably contains an anionic surfactant as component (a). In this case, surfactants other than anionic surfactants can be contained, and surfactants other than anionic surfactants are preferably nonionic surfactants.

From the viewpoint of detergency, the liquid detergent composition for textiles of the present invention preferably contains an anionic surfactant as component (a). is preferably 80% by mass or more, further 85% by mass or more, further 90% by mass or more, and 100% by mass or less, and this ratio may be 100% by mass.

Examples of anionic surfactants include anionic surfactants having a hydrocarbon group having 8 to 24 carbon atoms and a sulfonic acid group or a sulfate ester group. A sulfonic acid group or a sulfate ester group may be a salt. Anionic surfactants having a sulfate group include alkyl or alkenyl sulfates, polyoxyalkylene alkyl or alkenyl ether sulfates. Anionic surfactants having sulfonate groups include alkylbenzene sulfonates. Other anionic surfactants include fatty acids having from 12 to 24 carbon atoms or salts thereof.
Among these, polyoxyalkylene alkyl or alkenyl ether sulfate ester salts are preferred from the viewpoint of improving detergency.

Examples of anionic surfactants include one or more compounds selected from compounds represented by the following general formula (1).
R ^1a —O—(AO) _n —SO ₃ M (1)
[Wherein, R ^1a is an aliphatic hydrocarbon group having 10 to 18 carbon atoms, AO is one or more alkyleneoxy groups selected from an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms, n is the average number of added moles of AO and is a number of 1 or more and 4 or less, and M is a cation. ]

In general formula (1), the number of carbon atoms in R ^1a is 10 or more, preferably 12 or more from the viewpoint of detergency, and 18 or less, preferably 16 or less, more preferably 14 or less from the viewpoint of storage stability. is. R ^1a may be an alkyl group or an alkenyl group, preferably an alkyl group. R ^1a may also be linear or branched, preferably linear.

In general formula (1), AO is one or more alkyleneoxy groups selected from alkyleneoxy groups having 2 carbon atoms and alkyleneoxy groups having 3 carbon atoms. When AO contains two types of alkyleneoxy groups, these alkyleneoxy groups may be block-bonded or random-bonded.

In general formula (1), n is 1 or more and 4 or less from the viewpoint of detergency.

In general formula (1), M is a cation (excluding hydrogen ions). Examples of M include alkali metal ions such as lithium ion, sodium ion and potassium ion, alkaline earth metal ions such as calcium ion and barium ion, triethanolammonium ion, diethanolammonium ion, monoethanolammonium ion, and trimethylammonium ion. , and organic ammonium ions such as monomethylammonium ion.
From the viewpoint of detergency, M is preferably an alkali metal ion or an alkanolammonium ion, more preferably a sodium ion, a potassium ion, a triethanolammonium ion, a diethanolammonium ion or a monoethanolammonium ion, and still more preferably a sodium ion.

When the component (a) contains the compound represented by the general formula (1), the proportion of the compound represented by the general formula (1) in the component (a) is 80% by mass or more, 85% by mass or more, and 90% by mass. It is preferably above and below 100% by mass, and this ratio may be 100% by mass.

(a) Nonionic surfactants include polyoxyalkylene alkyl or alkenyl ethers, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbite fatty acid esters, polyoxyethylene glycerol fatty acid esters, polyoxyethylene alkylphenyl ethers, poly Polyalkylene glycol-type nonionic surfactants such as oxyalkylene (hardened) castor oil, polyhydric alcohol-type nonionic surfactants and fatty acids such as sucrose fatty acid esters, polyglycerin alkyl ethers, polyglycerin fatty acid esters, and alkyl glycosides Alkanolamides can be mentioned.
As the nonionic surfactant of component (a), a polyoxyalkylene type nonionic surfactant and a nonionic surfactant containing an ethyleneoxy group are preferred.

As the nonionic surfactant containing an ethyleneoxy group, a nonionic surfactant represented by the following general formula (2) is preferred.
R ^2a (CO) _s O—(AO) _t —R ^2b (2)
[In the formula, R ^2a is an aliphatic hydrocarbon group having 9 to 18 carbon atoms, and R ^2b is a hydrogen atom or a methyl group. CO is a carbonyl group and s is the number 0 or 1. The AO group is an alkyleneoxy group having 2 or more and 4 or less carbon atoms including an ethyleneoxy group. t is the average number of added moles and is a number of 1 or more and 50 or less. ]

In general formula (2), the number of carbon atoms in R ^2a is 9 or more, preferably 10 or more, more preferably 11 or more, and 18 or less, preferably 16 or less, more preferably 15 or less, and still more preferably 14 or less. be.
In general formula (2), t is the average number of added moles of AO groups, which is 1 or more, preferably 4 or more, more preferably 6 or more, still more preferably 8 or more, and 50 or less, preferably 20 or less. , more preferably 15 or less, still more preferably 12 or less. When the AO group contains two or more types of alkyleneoxy groups, the different types of AO groups may be a block bond or a random bond. Moreover, the bonding order of different types of AO groups does not matter.

The amphoteric surfactant of component (a) is not particularly limited. N-alkyl-N,N-dimethylamine oxide having a group, N-alkylcarbonylaminopropyl-N,N-dimethylamine oxide having an alkyl group having a carbon number within the above range, having an alkyl group having a carbon number within the above range N-alkyl-N,N-dimethylaminoacetic acid betaine, N-alkylcarbonylaminopropyl-N,N-dimethylaminoacetic acid betaine having an alkyl group having a carbon number within the above range, N having an alkyl group having a carbon number within the above range -alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammoniumsulfobetaine and the like.

(a) Component cationic surfactants include quaternary ammonium surfactants and tertiary amine surfactants.

The component (b) is a copolymer containing acrylic acid and maleic acid as constituent monomers or a salt thereof. When component (b) is a salt, the copolymer is preferably one or more alkali metal salts selected from lithium, sodium and potassium, more preferably sodium salt. The weight average molecular weight of component (b) is preferably 500 or more, more preferably 5,000 or more, from the viewpoint of detergency, and preferably 100,000 or less, more preferably 50,000, from the viewpoint of detergency. It is below. The weight average molecular weight of component (b) can be measured, for example, by a gel permeation chromatography method (GPC method) as shown below.

* GPC conditions Equipment: GPC (HLC-8320GPC) manufactured by Tosoh Corporation Column: G4000PWXL + G2500PWXL (manufactured by Tosoh Corporation)
Eluent: 0.2M phosphate buffer/ _CH3CN =9/1
Flow rate: 1.0 mL/min
Column temperature: 40°C
Detection: RI
Sample size: 0.2 mg/mL
Standard substance: Polyethylene glycol conversion (monodisperse polyethylene glycol: molecular weight 250,000, 145,000, 87,500, 46,000, 24,000)

In all the constituent monomers constituting component (b), the molar ratio of acrylic acid [(acrylic acid) / (total constituent monomers)] is preferably 0.20 or more, more preferably 0.20 or more, from the viewpoint of storage stability. It is preferably 0.40 or more, more preferably 0.60 or more, and from the viewpoint of detergency, it is preferably less than 1.0, more preferably 0.90 or less, and still more preferably 0.80 or less.
When the molar ratio of acrylic acid in all constituent monomers constituting component (b) [(acrylic acid)/(total constituent monomers)] is within the above range, all constituent monomers constituting component (b) In the body, the constituent monomers other than acrylic acid may be maleic acid or maleic acid and the following other constituent monomers.
The molar ratio of maleic acid [(maleic acid)/(total constituent monomers)] in all constituent monomers constituting component (b) is preferably 0.20 or more, more preferably 0.20 or more, from the viewpoint of detergency. is 0.40 or more, more preferably 0.60 or more, and from the viewpoint of storage stability, is preferably 0.80 or less, more preferably 0.60 or less, and still more preferably 0.40 or less.
When the content of component (c) in the detergent composition of the present invention is preferably 4% by mass or more, more preferably 5% by mass or more, the above molar ratio [(acrylic acid)/(total Constituent monomer)] is preferably 0.20 or more, more preferably 0.40 or more, still more preferably 0.50 or more, still more preferably 0.60 or more, still more preferably 0.70 or more, and , preferably less than 1.0, more preferably 0.90 or less, still more preferably 0.80 or less.
Further, in the detergent composition of the present invention, when the mass ratio (c)/(b) of the content of component (c) to the content of component (b) is preferably 4 or more, more preferably 5 or more. In addition, the molar ratio [(acrylic acid)/(total constituent monomers)] is preferably 0.20 or more, more preferably 0.40 or more, still more preferably 0.50 or more, still more preferably 0.50 or more. It is 60 or more, more preferably 0.70 or more, and preferably less than 1.0, more preferably 0.90 or less, still more preferably 0.80 or less.

The (b) component can contain constituent monomers other than acrylic acid and maleic acid [hereinafter referred to as other constituent monomers] as constituent monomers. Other constituent monomers include, for example, methacrylic acid. In this case, the molar ratio of the total of acrylic acid and maleic acid [(total of acrylic acid and maleic acid) / (total constituent monomers)] in all the constituent monomers constituting the component (b) is the detergency from the viewpoint of, it is preferably 0.80 or more, more preferably 0.85 or more, still more preferably 0.90 or more, and less than 1.0. Component (b) is a copolymer or a salt thereof that does not contain other constituent monomers, that is, the molar ratio [(total of acrylic acid and maleic acid) / (total constituent monomers)] is 1.0 It can be.

Component (c) is a neutral inorganic salt containing a monovalent cation. Component (c) is composed of, for example, a combination of one or more alkali metal ions selected from lithium, sodium and potassium and one or more counterions selected from sulfate ions and chloride ions. may be an inorganic salt.
Component (c) includes, for example, one or more selected from sodium sulfate, potassium sulfate, lithium sulfate, sodium chloride, potassium chloride, and lithium chloride, and from the viewpoint of storage stability, sodium sulfate and potassium chloride. is preferably one or more, more preferably sodium sulfate.
(c) Component may contain sodium sulfate. When component (c) contains sodium sulfate, the content of sodium sulfate in component (c) is preferably 80% by mass or more, more preferably 85% by mass or more, still more preferably 90% by mass or more, and 100% by mass. % or less.

A neutral inorganic salt may be an inorganic salt in which the pH of a solution of a neutral inorganic salt dissolved in water is close to neutral at 25°C. Specifically, the neutral inorganic salt is a solution in which 1 g of a neutral inorganic salt is dissolved in 100 g of water. , and more preferably an inorganic salt with a pH of 8 or less at 25°C of the solution. The pH of a solution in which a neutral inorganic salt is dissolved in water can be measured by the following method.

<Method for measuring pH>
A pH meter (pH/ion meter F-23, manufactured by HORIBA) is connected to a combined electrode for pH measurement (glass-sliding sleeve type, manufactured by HORIBA), and the power is turned on. A saturated potassium chloride aqueous solution (3.33 mol/L) is used as the pH electrode internal liquid. Next, pH 4.01 standard solution (phthalate standard solution), pH 6.86 (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution) are each filled in a 100 mL beaker, and 25 C. for 30 minutes. A pH measuring electrode is immersed in a standard solution adjusted to a constant temperature for 3 minutes, and calibrated in the order of pH 6.86→pH 9.18→pH 4.01. A sample to be measured (solution in which a neutral inorganic salt is dissolved) is adjusted to 25° C., the electrode of the pH meter is immersed in the sample, and the pH is measured after 1 minute.

The cleaning composition of the present invention may contain water. Water may be the balance after removing components (a), (b), (c) and optional components.

The detergent composition of the present invention can optionally contain components such as foam boosters, enzymes, pH adjusters, stabilizers, fluorescent dyes, fragrances, pigments, preservatives, and solvents.

In the detergent composition of the present invention, the content of component (a) is 5% by mass or more, preferably 10% by mass or more from the viewpoint of detergency, and 30% by mass or less from the viewpoint of storage stability. It is preferably 25% by mass or less, more preferably 20% by mass or less. When the component (a) contains an anionic surfactant, the description (% by mass or mass ratio) related to the mass of the anionic surfactant of the component (a) is the mass when the counter ion is assumed to be a sodium ion ( mass in terms of sodium salt).

When the cleaning composition of the present invention contains an anionic surfactant as the component (a), the content of the anionic surfactant in the cleaning composition of the present invention is 5% by mass from the viewpoint of detergency. Above, more preferably 10% by mass or more, preferably 25% by mass or less, and more preferably 20% by mass or less.

In the detergent composition of the present invention, the content of component (b) is preferably 0.5% by mass or more, more preferably 1% by mass or more, still more preferably 2% by mass or more, from the viewpoint of detergency. More preferably 5% by mass or more, still more preferably 8% by mass or more, and from the viewpoint of storage stability, 20% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less, and still more preferably 8% by mass. % by mass or less, more preferably 5% by mass or less. In addition, content of (b) component is calculated as an acid.

In the detergent composition of the present invention, the content of component (c) is 2% by mass or more, preferably 4% by mass or more, more preferably 6% by mass or more, and still more preferably 6% by mass, from the viewpoint of detergency. and, from the viewpoint of storage stability, it is 20% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less.

In the detergent composition of the present invention, the content of the component (a), the content of the anionic surfactant, the content of the compound represented by the general formula (1), and the component (c) The content of (a)/(c) is preferably 10 or less, more preferably 5 or less, and still more preferably 2 or less from the viewpoint of detergency.

In the detergent composition of the present invention, the mass ratio (c)/(b) of the content of component (c) to the content of component (b) is 1 or more, preferably 3 or more, from the viewpoint of detergency. More preferably 5 or more, still more preferably 8 or more, and from the viewpoint of storage stability, it is 15 or less, preferably 12 or less.

The liquid detergent composition for textiles of the present invention comprises (a) component, (b) component, (c) component and water,
The amount of component (a) is 5% by mass or more and 30% by mass or less with respect to the total amount of the composition,
The amount of component (c) is 2% by mass or more and 20% by mass or less with respect to the total amount of the composition,
The liquid detergent composition for textile products may be obtained by blending the amount of the component (c) to the amount of the component (b) at a mass ratio (c)/(b) of 1 or more and 15 or less. .
The preferred content of the liquid detergent composition for textiles of the present invention can be applied in place of the preferred blending amount of the liquid detergent composition for textiles of the present invention.

The present invention is a method for producing a liquid detergent composition for textiles, comprising mixing the following components (a), (b), (c) and water to produce a liquid detergent composition for textiles. hand,
The mixing amount of component (a) is 5% by mass or more and 30% by mass or less with respect to the total mass of the components to be mixed,
The mixing amount of component (c) is 2% by mass or more and 20% by mass or less with respect to the total mass of the components to be mixed,
(a) component, (b) component, (c) component and water at a mass ratio (c) / (b) of the mixed amount of component (c) and the mixed amount of component (b) at a ratio of 1 or more and 15 or less to provide a method for producing a liquid detergent composition for textiles.
(a) component: surfactant (b) component: copolymer containing acrylic acid and maleic acid as constituent monomers or a salt thereof (c) component: inorganic neutral salt containing a monovalent cation

In the method for producing the liquid detergent composition for textiles of the present invention, it is preferable to use the components (a), (b) and (c) described in the liquid detergent composition for textiles of the present invention. can. The contents of the components (a), (b) and (c) in the detergent composition of the present invention are the ) component and (c) component can be applied in place of the mixed amount.

The liquid detergent composition for textiles of the present invention can be used when washing textiles by hand and when washing textiles with a washing machine.
When hand-washing textiles, the textiles may be washed by directly contacting the textiles with the liquid detergent composition for textiles of the present invention. A diluted liquid detergent composition may be brought into contact with the fabric to wash the textiles.
Further, when washing the textile product in a washing machine, the textile product may be washed in the washing machine after the liquid detergent composition for textile products of the present invention is brought into direct contact with the textile product. The liquid detergent composition for textiles of the present invention and the textiles may be put in the container, and the textiles may be washed with a washing machine.
After applying the liquid detergent composition for textiles of the present invention to the textiles, the textiles can be washed by applying force such as hand washing, and then the textiles can be further washed with a washing machine.

The present invention provides a method for cleaning textiles, comprising contacting textiles with the liquid detergent composition for textiles of the present invention.
The present invention also provides a method for washing textiles, comprising applying the liquid detergent composition for textiles of the present invention to textiles and washing the textiles by hand. Hand-washing washing may be to apply an external force to the textile product coated with the detergent composition by human power. In hand-washing, textile products are rubbed, rubbed or beat-washed, and tools such as brushes and washboards may be used.
The present invention also provides a method for washing textiles, comprising applying the liquid detergent composition for textiles of the present invention to textiles and washing the textiles in a washing machine.
In the liquid detergent composition for textiles used in the method for washing textiles of the present invention, preferred aspects and usage aspects of the components (a), (b), and (c) are for the textiles of the present invention. It is the same as the liquid detergent composition.

The cleaning method for textiles of the present invention may be a cleaning method in which the detergent composition of the present invention is applied to the textiles, and the textiles to which the detergent composition has been applied is washed by hand. Moreover, after washing by hand, the textile product may be further washed in a washing machine.
The method for washing a textile product of the present invention may be a method of applying the detergent composition of the present invention to the textile product, and washing the textile product coated with the detergent composition with a water flow of a washing machine.

Various fibers such as natural fibers, synthetic fibers, and semi-synthetic fibers can be used in the method for washing textile products of the present invention. The textile product cleaning method of the present invention can be applied to textile products containing these fibers. Textiles may be, for example, clothing.

The fibers may be hydrophobic fibers or hydrophilic fibers. Examples of hydrophobic fibers include protein fibers (milk protein casein fiber, Promix, etc.), polyamide fibers (nylon, etc.), polyester fibers (polyester, etc.), polyacrylonitrile fibers (acrylic, etc.), polyvinyl alcohol fibers, etc. Fibers (vinylon, etc.), polyvinyl chloride fibers (polyvinyl chloride, etc.), polyvinylidene chloride fibers (vinylidene, etc.), polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyvinyl chloride/ Polyvinyl alcohol copolymer fibers (polyclaral, etc.), polyalkylene paraoxybenzoate fibers (benzoate, etc.), polyfluoroethylene fibers (polytetrafluoroethylene, etc.), and the like are exemplified. Hydrophilic fibers include, for example, seed hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (manila hemp, sisal hemp, etc.), palm fibers, rush, Straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, cellulose fibers (rayon, polynosic, cupra, acetate, etc.), etc. exemplified.
In the present invention, textile products include fabrics such as woven fabrics, knitted fabrics, and non-woven fabrics using the above-mentioned hydrophobic fibers and hydrophilic fibers, and undershirts, T-shirts, dress shirts, blouses, slacks, hats, etc. obtained using the same. Products such as handkerchiefs, towels, knitwear, socks, underwear, and tights. Preferred textile products are woven and woven textile products such as woven fabrics and knitted fabrics, and from the same point of view, preferred textile products are textile products containing cotton fibers.

Examples <Examples and Comparative Examples>
Using the following components (a), (b) and (c), etc., liquid detergent compositions for textiles of Examples and Comparative Examples were prepared, and the respective liquid detergents for textiles were evaluated by the following evaluation methods. The detergency and storage stability of the composition were evaluated.

<(a) component>
(a-1) Polyoxyethylene (ethylene oxide average added mole number 1) sodium lauryl ether sulfate, Emal 170J, manufactured by Kao Corporation (a-2) Polyoxyethylene (ethylene oxide average added mole number 2) lauryl ether sulfuric acid Ester sodium, Emal 270J, manufactured by Kao Corporation (a-3) polyoxyethylene (ethylene oxide average added mole number 10) lauryl ether, KE110, manufactured by Kao Corporation

<(b) component>
(b-1) Sodium salt of acrylic acid/maleic acid copolymer, Poise 520 (acrylic acid/maleic acid (AA/MA: molar ratio) = 71/29), weight average molecular weight (MW) 31,500, Kao Corporation Product (b-2) Sodium salt of acrylic acid / maleic acid copolymer, Poise 521 (acrylic acid / maleic acid (AA / MA: molar ratio) = 44/56), weight average molecular weight (MW) 21,300, Kao stock Company (b-3) sodium salt of acrylic acid/maleic acid copolymer, oligomer KDS (acrylic acid/maleic acid (AA/MA: molar ratio) = 25/75), weight average molecular weight (MW) 15,300, Kao Co., Ltd. <(b') component>
(b'-1) Sodium salt of polyacrylic acid, oligomer D, weight average molecular weight (MW) 10,000, manufactured by Kao Corporation

<(c) component>
(c-1) anhydrous sodium sulfate, PT. (c-2) potassium chloride manufactured by South Pacific Viscose, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. <(c') component>
(c'-1) Anhydrous magnesium sulfate, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. (c'-2) Anhydrous sodium metasilicate, manufactured by Kanto Chemical Co., Ltd. <Other components>
Water: deionized water Fluorescent whitening agent: Tinopal CBS-X, manufactured by BASF pH adjuster: monoethanolamine (MEA), manufactured by The Dow Chemical Company pH adjuster: citric acid, manufactured by Weifang Ensign Industry Co Ltd

<Evaluation method for detergency>
(1) Preparation of artificial mud-contaminated cloth The model-contaminated cloth used for evaluation was prepared by the following procedure. Since this method adheres particles between fibers by re-staining, the soiled cloth is more difficult to remove than a normal soiled cloth with mud applied to the surface. The mud used was Kanuma gardening Akadama soil dried at 120° C.±5° C. for 4 hours, pulverized and sieved through a 75 μm sieve before use. 6 g of mud was added to 1000 mL of ion-exchanged water, stirred, and then subjected to ultrasonic waves for 15 minutes. These were transferred to a tergotometer, 15 g of cotton knitted cloth (purchased from Tanigashira Shoten, 6 cm×6 cm) was added, and stirred at 20° C. and 100 rpm for 20 minutes. After that, rinsing with running water was performed for 1 minute, dehydration was performed for 1 minute, and air drying was performed overnight.
(2) Application and washing conditions 0.1 g of the liquid detergent composition for textile products described in Tables 1 and 2 is directly applied to each piece of artificial mud-contaminated cloth, and while it is applied, it is rubbed 10 times from two directions. 4 pieces of soiled cloth that had been rubbed after applying the liquid detergent composition for textiles to 600 mL of hard water of 179 mg/L in terms of calcium carbonate (this hard water corresponds to 10° DH in German hardness) was added. Washing was performed using a meter under conditions of a washing time of 10 minutes, a rotation speed of 100 rpm, and a water temperature of 30°C.
Detergency was determined by measuring the reflectance of the raw cloth before staining and the reflectance before and after washing with a colorimetric color difference meter (Z-300A manufactured by Nippon Denshoku Co., Ltd.), and the washing rate (%) was calculated by the following formula. It can be said that the higher the washing ratio, the better the washing power of the liquid detergent composition for textiles. In this evaluation, it is desirable that the cleaning rate is 45% or more. The reflectance before or after washing is the reflectance measured on the artificial sludge contaminated cloth before or after washing, respectively.
Cleaning rate (%) = 100 x [(reflectance after cleaning-reflectance before cleaning)/(reflectance of raw fabric-reflectance before cleaning)]

<Method for evaluating storage stability>
25 g of the liquid detergent composition for textile products shown in Tables 1 and 2 was placed in a PS-No.6 transparent standard bottle manufactured by Ishida Yoki Co., Ltd. and allowed to stand in a constant temperature bath at 50.degree. The appearance of the liquid detergent composition for textiles after 21 days was visually observed and evaluated according to the following criteria. In the evaluation of the liquid detergent composition for textile products, the smaller the number, the more excellent the storage stability of the composition. Criteria 1 and 2 are acceptable levels when the product form and the like are taken into consideration. Criteria 3 and 4 are levels of rejection when the product form and the like are taken into consideration.
1: Maintains a transparent state and no separation is observed.
2: Cloudy in the early stages, but no separation is observed.
3: Separation is observed after storage.
4: Separation is observed in the initial stage.

Claims

Containing the following components (a), (b), (c) and water,
In the composition, the content of component (a) is 5% by mass or more and 30% by mass or less,
In the composition, the content of component (c) is 2% by mass or more and 20% by mass or less,
The mass ratio (c)/(b) of the content of component (c) to the content of component (b) is 1 or more and 15 or less.
A liquid detergent composition for textiles.
(a) component: surfactant (b) component: copolymer containing acrylic acid and maleic acid as constituent monomers or a salt thereof (c) component: neutral inorganic salt containing a monovalent cation
The textile product according to claim 1, wherein component (a) is one or more surfactants selected from anionic surfactants, nonionic surfactants, amphoteric surfactants and cationic surfactants. Liquid detergent composition.
(a) The liquid detergent composition for textiles according to claim 1 or 2, wherein the component contains a compound represented by the following general formula (1).
R 1a —O—(AO) n —SO 3 M (1)
[In the formula, R 1a is an aliphatic hydrocarbon group having 10 to 18 carbon atoms, and AO is one or more alkyleneoxy groups selected from an alkyleneoxy group having 2 carbon atoms and an alkyleneoxy group having 3 carbon atoms. where n is the average number of added moles of AO and is a number of 1 or more and 4 or less, and M is a cation. ]
Claims 1 to 3, wherein the molar ratio of acrylic acid [(acrylic acid)/(total constituent monomers)] in all constituent monomers of component (b) is 0.20 or more and less than 1.0. The liquid detergent composition for textiles according to any one of claims 1 to 3.
The liquid detergent composition for textile products according to any one of claims 1 to 4, wherein the component (c) is sodium sulfate.
The liquid detergent for textile products according to any one of claims 1 to 5, wherein the content of the component (c) in the liquid detergent composition for textile products is more than 6% by mass and not more than 12% by mass. Composition.
The textile product according to any one of claims 1 to 6, wherein the mass ratio (c)/(b) of the content of component (c) to the content of component (b) is 1 or more and 12 or less. Liquid detergent composition.
A method for cleaning textiles, comprising contacting textiles with the liquid detergent composition for textiles according to any one of claims 1 to 7.
The method for cleaning textiles according to claim 8, wherein the liquid detergent composition for textiles is applied to the textiles, and the textiles are washed by hand.
The method for washing a textile product according to claim 8 or 9, wherein the textile product is coated with the liquid detergent composition for textile products, and the textile product is washed with a washing machine.