JP2003129099A - Powdered detergent composition for clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a powdered detergent composition for clothings having excellent power for removing the stains of sebaceous matters, spots and stains even though it is used in water of specifically high hardness. SOLUTION: The powdered detergent composition for clothings contains, in a specific ratio, (a) an anionic surface active agent, (b) a non-ionic surface active agent, (c) a compound which is capable of releasing hydrogen peroxide in water, and (d) a compound which is capable of generating an organic peracid by reacting with hydrogen peroxide in water, and in accordance with JIS K 3362: 1998, the pH of an aqueous solution of 0.1% by mass of the composition at 25 deg.C is 8 to 12.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a powder detergent composition for clothes.

[0002]

2. Description of the Related Art To wash clothes in ordinary households, a weak alkaline detergent is repeatedly used. However, for stubborn stains such as collars and cuffs of Y-shirts, liquid detergent or soap can be directly applied. It is washed by applying it to the dirty part. However, even if such a washing method is performed, it is a common experience that clothes, especially white underwear, gradually turn yellow. This is because the sebum component of the human body permeates the inside of the cotton fiber, is not sufficiently removed by ordinary washing, is gradually accumulated, and becomes oxidized and becomes yellow in color. To remove these modified sebum stains, methods such as adding a bleaching agent separately or requesting a specialized cleaning company have been taken, but it was not satisfactory in view of labor and cost. In addition, stains such as black tea stains are also difficult to remove by washing. In particular, when using high-hardness washing water, the effectiveness of the detergent tends to decrease, and removal of these sebum stains and stain stains becomes more difficult.

[0003] Therefore, there is a demand for a detergent which can prevent accumulation of sebum stains on clothes in a simple manner, that is, in daily washing action without requiring special work, and which is excellent in stain stain removing performance. It was

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a powder detergent composition for clothes which is excellent in removing sebum stains. A particular object of the present invention is to provide a powder detergent composition for clothes, which has excellent ability to remove sebum stains even when water of high hardness is used.

[0005]

The present invention provides (a) anionic surfactant [hereinafter referred to as (a) component] 8 to 25% by mass, (b) nonionic surfactant [hereinafter (b). Component) [however, the total amount of (a) and (b) is 20 to 40 mass%, the mass ratio of (a) / (b) is 1/2 to 5/1], and (c) in water Compound that releases hydrogen peroxide [hereinafter referred to as component (c)] 0.1 to 8% by mass, and (d)
A compound containing 0.1 to 5 mass% of a compound that reacts with hydrogen peroxide in water to generate an organic peracid [hereinafter referred to as component (d)] at 25 ° C. according to JIS K3362: 1998.
The present invention relates to a powder detergent composition for clothes, wherein a 1% by mass aqueous solution has a pH of 8 to 12.

The present invention also provides a step of obtaining particles containing the component (a) and the component (b), a step of obtaining particles containing the component (c), a step of obtaining particles containing the component (d),
And a method for producing the powdery detergent composition for clothes according to the present invention, which has a step of mixing these particles.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION <(a) Component> Alkylbenzene sulfonate, an alkyl or alkenyl ether sulfate ester salt, an alkyl or alkenyl sulfate ester salt, an α-olefin sulfonate salt as an anionic surfactant,
Examples include α-sulfo fatty acid salts or esters thereof, alkyl or alkenyl ether carboxylates, and fatty acid salts. Alkali metal ions are preferable as counter ions in terms of improving detergency. In particular, from the viewpoint of improving the dissolution rate,
Potassium ions are preferred, and potassium ions in all counterions are preferably 5% by mass or more, more preferably 20% by mass or more, and particularly preferably 40% by mass or more.

The powder detergent composition for clothes of the present invention comprises (a)
Contains 8 to 25 mass% of the component. From the viewpoint of solubility and cleaning performance, 10 to 20 mass% is preferable, and 12 to 18 mass% is more preferable.

<Component (b)> The nonionic surfactant has a melting point of 40 ° C. from the viewpoint of detergency, particularly degreasing power of sebum stains.
The following are preferable, more preferably 30 ° C. or lower, particularly preferably 25 ° C. or lower. The melting point is the same as that of the METTLER FP81 (Mettler I) of the FP800 thermo system.
nstrumente AG) and a heating rate of 0.
It is measured at 2 ° C / min. For example, from the viewpoint of detergency, polyoxyalkylene alkyl ether, polyoxyalkylene alkylphenyl ether, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycol fatty acid ester, and polyoxyethylene polyoxypropylene block polymer are preferable. In particular, ethylene oxide (hereinafter, E
(Denoted as O) is added to the polyoxyethylene alkyl ether having an average of 4 to 20 moles, or EO to the alcohol.
On average 4 to 20 mol, propylene oxide (hereinafter, P
(Denoted as O) is added 0.3 to 4 mol on average,
Among them, it is preferable to add blocks in the order of EO / PO / EO. Further, the component (b) is Griffin (Gr
If the HLB based on the ifin) method is 6.5 to 14.0, it is preferable.

The powder detergent composition for clothes of the present invention comprises (a)
The component and the component (b) are contained in a total amount of 20 to 40% by mass. From the viewpoint of cleaning performance and solubility, 20 to 35 mass% is preferable, and 20 to 30 mass% is more preferable. Also, (a)
The mass ratio of component / (b) component is 1/2 to 5/1, preferably 2/3 to 3/1 in terms of cleaning performance, and 7/8 to 2 /.
1 is more preferable, and 1/1 to 2/1 is even more preferable.

<Component (c)> Examples of compounds that release hydrogen peroxide in water include carbonate / hydrogen peroxide adducts, borate / hydrogen peroxide adducts, tripolyphosphate / hydrogen peroxide adducts, and pyrroline. Examples thereof include acid salt / hydrogen peroxide adducts, urea / hydrogen peroxide adducts, and the like. Of these, carbonate / hydrogen peroxide adducts and borate / hydrogen peroxide adducts are preferable,
Sodium carbonate / hydrogen peroxide adduct, sodium borate /
Hydrogen peroxide adducts are more preferred, and sodium carbonate / hydrogen peroxide adducts are even more preferred in terms of cleaning performance.

The powder detergent composition for clothes of the present invention comprises (c)
Contains 0.1 to 8 mass% of components. From the viewpoint of cleaning performance and cleaning efficiency, 0.5 to 5% by mass is preferable, and 1 to 3.5% by mass.
Is more preferable and 1.5 to 2.8 mass% is still more preferable.

<Component (d)> As a compound which reacts with hydrogen peroxide in water to generate an organic peracid, glucose pentaacetate, triacetin, N, N, which are generally used in detergents containing an oxygen-based bleaching agent. Bleach activators such as N ′, N′-tetraacetylethylenediamine and tetraacetylglycolyluril can be used, but in terms of effects, compounds represented by the following general formulas (1) to (4) can be used. One or more is particularly preferred.

[0014]

[Chemical 3]

[Wherein R ₁ is an alkyl group having 4 to 13 carbon atoms, preferably 10 to 13 carbon atoms, R ₂ is an alkyl group having 5 to 13 carbon atoms, preferably 7 to 11 carbon atoms, and M is a hydrogen atom or an alkali metal , Alkaline earth metal, ammonium or alkanolamine. ]

[0016]

[Chemical 4]

[Wherein R ₃ , R ₄ , R ₅ , R ₆ , R ₇ , R ₉ ,
R ₁₀ is independently a methyl group, an ethyl group or a hydroxyethyl group, R ₈ is an alkylene group having 2 to 10 carbon atoms, X ⁻ is an anion, preferably a halogen ion, and an alkyl group having 1 to 3 carbon atoms. Alkyl sulfate ion, carbon number 1 to 1
2 shows fatty acid ion, phosphate ion and sulfate ion. ].

The powdery detergent composition for clothes of the present invention comprises (d)
Contains 0.1 to 5 mass% of components. From the viewpoint of cleaning performance and cleaning efficiency, 0.5 to 3% by mass is preferable, and 0.8 to 2% by mass.
Is more preferable.

<Other Components> The powder detergent composition for clothes of the present invention comprises a cationic interface such as a quaternary ammonium salt such as an alkyltrimethylammonium salt as a surfactant other than the components (a) and (b). An activator, an amphoteric surfactant such as a carbobetaine type and a sulfobetaine type can be contained.

As other components, the powdery detergent composition for clothes of the present invention includes a builder, an alkaline agent, a water-soluble polymer, an anti-soil redeposition agent, a softening agent, an optical brightening agent, and a foam known in the field of detergents. A control agent, an enzyme, an enzyme stabilizer, a fragrance and the like can be contained.

As the inorganic builder, crystalline aluminosilicate, amorphous aluminosilicate, crystalline sodium silicate,
Examples thereof include sodium tripolyphosphate, sodium pyrophosphate, and the like, and crystalline aluminosilicate is more preferable from the viewpoints of environmental impact and cleaning performance. From the viewpoint of cleaning performance, the ratio of the builder is preferably 10 to 50% by mass in the composition, and 15 to 15% by mass.
40 mass% is more preferable.

Examples of the alkaline agent include carbonates, silicates, amines (alkylamines, alkanolamines, etc.) and the like, and carbonates and silicates are more preferable. From the viewpoint of cleaning performance, the proportion of the alkaline agent in the composition is preferably 5 to 50% by mass, more preferably 10 to 40% by mass.

Examples of the water-soluble polymer include carboxylic acid type polymers, carboxymethyl cellulose, soluble starch, saccharides and the like. Among them, a carboxylic acid-based polymer having a weight average molecular weight of 1,000 to 100,000 is preferable from the viewpoints of sequestering ability of metal ions, dispersing ability of solid stains / particle stains and preventing redeposition. Particularly, salts of acrylic acid-maleic acid copolymer and polyacrylic acid salts are preferable. Here, examples of the salt include sodium salt, potassium salt, and ammonium salt. From the viewpoint of cleaning performance, the proportion of the water-soluble polymer in the composition is preferably 0.5 to 20% by mass, more preferably 1 to 10% by mass.

From the viewpoint of storage stability, the powder detergent composition for clothes of the present invention has a water content of preferably 10% by mass or less, more preferably 7% by mass or less, further preferably 5% by mass or less, and 3% by mass. The following are particularly preferred. The water content is JI
SK 3362: 1998 Measured by the method specified by the weight loss method.

The powdered detergent composition for clothes of the present invention has a JIS
25 ° C. according to K 3362: 1998, 0.1% by mass
The pH of the aqueous solution is 8 to 12, and the cleaning performance is 9 to 1
2 is preferable and 10-11 is more preferable.

The powder detergent composition for clothes of the present invention has an apparent density of 600 g / m as measured by the method defined by JIS K3362: 1998 in terms of convenience and waste reduction.
L or more is preferable, 700 g / L or more is more preferable,
800 g / L or more is more preferable. From the viewpoint of solubility, the apparent density is preferably 1600 g / L or less, 13
00 g / L or less is more preferable, and 1000 g / L or less is further preferable.

In terms of solubility, the powder detergent composition for clothes of the present invention is vibrated for 5 minutes using a standard sieve of JIS Z 8801, and then the average particle diameter determined from the mass fraction according to the size of the sieve mesh is 150 to 700 μm is preferable, more preferably 150 to 600 μm, and further preferably 180 to 40 μm.
It is 0 μm.

In the present invention, from the viewpoint of storage stability, particles containing the component (a) and the component (b), particles containing the component (c), and particles containing the component (d) are prepared respectively. It is preferable to mix these particles to obtain a powder detergent composition for clothes.

The particles containing the components (a) and (b) can be prepared by a conventionally known method for producing a powder detergent. In the particles containing the component (a) and the component (b), other surfactants, builders, alkaline agents, softening agents, anti-soil redeposition agents, foam control agents, perfumes, optical brighteners, reducing agents, etc. May be included. The surface of the particles containing the component (a) and the component (b) may be surface-modified with a surface modifier. The surface modifier is composed of the component (a) and the component (b).
1 to 30% by mass in the particles containing the component is preferable, and
25 mass% is more preferable, and 5 to 25 mass% is still more preferable. As the surface modifier, for example, aluminosilicate, calcium silicate, silicon dioxide, bentonite,
Talc, clay, amorphous silica derivatives, silicate compounds such as crystalline silicate compounds, metal soaps, fine powders such as powdered surfactants, carboxymethyl cellulose, polyethylene glycol, sodium polyacrylate, copolymers of acrylic acid and maleic acid. Or water-soluble polymers such as polycarboxylic acid salts such as salts thereof; fatty acids. Of these, water-insoluble inorganic substances are preferable, and crystalline aluminosilicates, amorphous aluminosilicates, and crystalline silicate compounds are particularly preferable.

In terms of solubility and cleaning performance, the particles containing the component (a) and the component (b) are water-insoluble inorganic substances and
Particles comprising (a) component and (b) component supported on base granules obtained by spray-drying a slurry containing one or more water-soluble components selected from water-soluble polymers and water-soluble salts. Is preferred. In particular, 100 parts by mass of the base granules are added to the components (a) and (b) 5 to 8
It is more preferable that the particles support 0 parts by mass.

The water-insoluble inorganic substance preferably has an average primary particle size of 0.1 to 20 μm, and examples thereof include crystalline or amorphous aminosilicates, silicon dioxide, hydrated silicic acid compounds, and perlite. There are clay compounds such as bentonite, but crystalline or amorphous aluminosilicates, silicon dioxide, and hydrated silicic acid compounds are preferable, and among them, in terms of sequestering ability of metal ions and supporting ability of surfactants. Crystalline aluminosilicates are preferred.

Examples of the water-soluble polymer include carboxylic acid type polymers, carboxymethyl cellulose, soluble starch, saccharides, etc. Among them, in terms of sequestering ability of metal ions, dispersibility of solid dirt / particle dirt and prevention of redeposition, the weight is high. A carboxylic acid polymer having an average molecular weight of 1,000 to 100,000 is preferable. Particularly, salts of acrylic acid-maleic acid copolymer and polyacrylic acid salts are preferable. Here, examples of the salt include sodium salt, potassium salt, and ammonium salt.

Examples of the water-soluble salts include alkali metal salts such as carbonates, hydrogencarbonates, sulfates, sulfites, hydrogensulfates, hydrochlorides and phosphates, ammonium salts, and water-soluble inorganic salts such as amine salts. Examples thereof include salts and low molecular weight water-soluble organic acid salts such as citrate and fumarate. By blending the water-soluble salt, bubbles generated from the detergent particles are thermally expanded by heat of hydration and heat of dissolution generated by the reaction between the water-soluble salt and water, thereby promoting disintegration of the particles. More preferable.

The water-insoluble inorganic substance in the base granules is 20 to
90 mass% is preferable, 30-75 mass% is more preferable, 40-70 mass% is the most preferable. Further, the water-soluble component in the base granules is preferably 10 to 80% by mass, 2
5-70 mass% is more preferable, and 30-60 mass% is the most preferable. It is particularly preferable to contain a water-soluble polymer and a water-soluble salt. Among them, the water-soluble polymer in the base granules is preferably 2 to 30% by mass, more preferably 3 to 20% by mass, most preferably 5 to 20% by mass. At this time, the water-soluble salts in the base granules are preferably 5 to 78% by mass, 1
0-70 mass% is more preferable, 10-67 mass% is still more preferable, 20-60 mass% is particularly preferable, 20-
Most preferably 55% by weight. Within these ranges,
The base granules have a structure in which a large amount of water-soluble components are unevenly distributed near the surface thereof, which is preferable in terms of solubility.

The uneven distribution in the structure of the base granules can be confirmed by, for example, a method using Fourier transform infrared spectroscopy (FT-IR) or photoacoustic spectroscopy (PAS) in combination (FT-IR /
PAS). This is Appl
ied Spectroscopy vol. 47, 1
311-1316 (1993), it is a method of analyzing the distribution state of the substance in the depth direction from the surface of the base granules, whereby uneven distribution can be confirmed.

In addition to these three components, the base granules may contain a surfactant and auxiliary components such as fluorescent dyes, pigments and dyes suitable for detergent compositions.

The base granules are obtained by making various components into a slurry having a water content of preferably 30 to 60% by mass and then spray-drying. The temperature of the hot air during spray drying is preferably 200 to 300 ° C. from the viewpoint of solubility.

From the viewpoint of washing performance and solubility, the amount of the surfactant carried is 5 to 80 parts by mass, preferably 10 to 70 parts by mass, more preferably 15 to 65 parts by mass, relative to 100 parts by mass of the base granules. 20 to 60 parts by mass is more preferable.

As a method of supporting the surfactant on the base granules, a granulator may be used, but it is preferable to use a stirrer for mixing in terms of solubility. It is preferable that the mixture is mixed under mild conditions so as not to collapse the pores described later.

The particles containing the component (a) and the component (b) preferably have a particle diameter of 1/1 in the process of dissolving in water.
Air bubbles having a diameter of 10 or more, more preferably 1/5 or more, further preferably 1/4 or more, particularly preferably 1/3 or more are discharged. The bubbles are preferably released within 120 seconds when dissolved in water while still standing, and more preferably within 60 seconds, more preferably within 45 seconds. Further, the bubbles can be discharged as long as they have pores (single or plural) capable of discharging bubbles of a predetermined size, and the form and structure of particles are not particularly limited.

The storage stability of the particles containing the component (c) can be further improved by coating them with an inorganic salt and / or a polymer. Among them, borate, silicate,
It is more preferable to coat with a sulfate or a carbonate. The coating amount is preferably 5 to 20% by mass in the particles containing the component (c) in terms of stability and solubility. Further, a stabilizer, a dissolution accelerator, a chelating agent and the like which have been conventionally known may be contained. Among them, chloride, urea, anionic surfactant,
A nonionic surfactant is preferable from the viewpoint of solubility, and 0.1 to 5 mass% is preferable in the particles containing the component (c). When the particles containing the component (c) contain an anionic surfactant or a nonionic surfactant, the amount thereof is (a).
Include in the amount of ingredient or (b) ingredient.

The particles containing the component (d) preferably contain a surfactant and a binder in view of solubility and granulation property. Anionic surfactants are more preferable as the surfactant, and alkyl sulfate ester salts having 10 to 18 carbon atoms, particularly sodium lauryl sulfate ester, sodium myristyl sulfate ester, or 1 carbon atom from the viewpoint of improving solubility.
0-18 polyoxyethylene [EO average addition mole number (hereinafter referred to as EOp) 1-10, especially 1-5] alkyl ether sulfate ester salt, especially polyoxyethylene (EOp2-5) sodium lauryl ether sulfate ester , Polyoxyethylene (EOp2-5) sodium myristyl ether sulfate is more preferable. As a binder, the weight average molecular weight is 2000 to 2
0000 polyethylene glycol and 8 to 20 carbon atoms
Is more preferred, and the weight average molecular weight of polyethylene glycol is preferably 4000-10000, more preferably 4000-8000. The carbon number of the fatty acid is preferably 10-18, more preferably 12-
Eighteen. Further, the fatty acid may be in the state of sodium or potassium soap. In the particles containing the component (d), the surfactant is preferably 1 to 40% by mass, and the binder is preferably 0.5 to 30% by mass. Note that (d)
When the particles containing the component contain an anionic surfactant or a nonionic surfactant, the amount thereof is included in the amount of the component (a) or the component (b). Further, an acidic substance may be added for the purpose of further improving the stability. Examples of the acidic substance include one or more organic carboxylic acids selected from succinic acid, maleic acid, fumaric acid, citric acid, glycolic acid and p-hydroxybenzoic acid.

[0043]

Examples Example 1 The detergent compositions shown in Table 1 were prepared, and the sebum detergency and stain detergency were evaluated by the following methods. The results are shown in Table 1.

<Evaluation of Sebum Detergency> First, Japanese Patent Laid-Open No. 10-1
An artificial soiled cloth is prepared according to the method described in paragraph 0070 of 68485 publication.

Next, hard water (71.2 mg Ca at 20 ° C.)
1 liter of CO ₃ / liter, Ca / Mg molar ratio 7/3) was placed in a 1 liter beaker (inner diameter 105 mm),
A detergent is obtained by dissolving 4 g of the detergent composition. Next, using the cleaning liquid, a stirring type detergency tester (Terg-O-Tometer) described in JIS K 3362: 1998.
Etc.), 5 sheets of 10 cm × 10 cm artificially contaminated cloth are stirred at a rotation speed of 100 rpm for 10 minutes. Next, the artificially contaminated cloth was taken out, lightly squeezed by hand so that the water content was 200% by mass or less, and then put in 1 liter of water at 20 ° C., and the mixture was washed with a stirring-type detergency tester (rotation speed 100 rpm) for 3 times. Rinse for minutes. This rinsing operation is repeated twice. Next, after air drying, ironing is performed.

55 of the original cloth before stain and the stained cloth before and after washing
The reflectance at 0 nm was measured with a self-recording colorimeter (manufactured by Shimadzu Corp.), and the cleaning rate (%) was determined by the following formula, and the average value of the 5 sheets was evaluated according to the following criteria.

[0047]

[Equation 1]

[0048]

<Evaluation of Stain Detergency> Contaminating cloths are commercially available black tea contaminated cloths Art. A washing rate (%) was obtained in the same manner as in the evaluation of sebum-cleansing power except that N ° 167 (manufactured by EMPA) was used, and the average value of 5 sheets was evaluated according to the following criteria.

[0050]

[Table 1]

A-1: straight-chain alkyl (having 12 to 1 carbon atoms)
4) Sodium benzenesulfonate-a-2: straight-chain alkyl (C12-14) potassium benzenesulfonate-a-3: sodium α-olefinsulfonate having 14-18 carbon atoms-a-4: 14 carbon atoms ~ 18 α-sulfofatty acid methyl ester sodium-a-5: fatty acid (C14-18) sodium-b-1: an alcohol having 12 to 16 carbon atoms and 8 mol of EO added on average-b-2 : EO having an average of 23 moles added to an alcohol having 13 carbon atoms b-3: an average of 5 moles of EO, an average of 2 moles of PO and an average of 3 EOs in a linear primary alcohol having 10 to 14 carbon atoms Blocks added in the order of moles. C-1: Sodium carbonate / hydrogen peroxide adduct (Japanese Patent Application Laid-Open No. 2-212058)
Bleaching agent particles described in paragraph 0019 of JP-A No. 000-256699) c-2: sodium borate / hydrogen peroxide adduct (sodium carbonate / hydrogen peroxide adduct is changed to sodium borate / hydrogen peroxide adduct) Japanese Patent Laid-Open No. 2000-25669
No. 9 bulletin, bleaching agent particles described in paragraph 0019) -d-1: granules of sodium lauroyloxybenzenesulfonate (bleach activator particles described in JP 2000-256699 A, paragraph 0018). ) -D-2: Granulated product of decanoyloxybenzoic acid (except that sodium lauroyloxybenzenesulfonate was replaced with decanoyloxybenzoic acid)
It was obtained in the same manner as the bleaching activator particles described in paragraph 0018 of 699 publication.)-Crystalline silicate: powder SKS-6 (manufactured by Hoechst Tokuyama Corp.)-Polymer: sodium polyacrylate (weight average molecular weight 10,000)- PEG: polyethylene glycol (weight average molecular weight 8
500) -Fluorescent dye: Chinopearl CBS-X (manufactured by Ciba Geigy) -Enzyme: Cellulase K (described in JP-A-63-264699) and Lipolase 100T (manufactured by Novo) mixed in a mass ratio of 3: 1. .

Example 2 Based on the composition of the product 1 of the present invention shown in Table 1 of Example 1, a powder detergent was obtained by the following method.

Zeolite (half of the final composition content),
A slurry containing sodium carbonate, sodium sulfate, sodium chloride, a polymer, and citric acid and having a solid content of 50% by mass was spray-dried at a hot air temperature of 250 ° C. to obtain base granules. Next, Lodige Mixer (Matsusaka Giken Co., Ltd.,
Put the base granules in a capacity of 20 L, with a jacket),
While stirring the main shaft (150 rpm), surfactant, PEG,
The mixture of water and water was added for 3 minutes, and then the mixture was stirred for 5 minutes. Further, the crystalline silicate and the remaining amount of zeolite were charged into this mixer, and surface coating was carried out to obtain particles containing the component (a) and the component (b). This particle releases bubbles with a diameter of ⅓ or more of the particle diameter from the inside of the particle in the process of dissolving in water, and many water-soluble components are unevenly distributed near the particle surface by FT-IR / PAS. It was confirmed that

Particles containing sodium carbonate / hydrogen peroxide adduct by the method described in paragraph [0019] of JP-A-2000-256699 [particles containing component (c)]
Got

Particles containing sodium lauroyloxybenzenesulfonate [particles containing the component (d)] were obtained by the method described in paragraph 0018 of JP-A-2000-256699.

These particles were mixed so that the final composition was the same as that of the product 1 of the present invention in Table 1 to obtain a powder detergent. The resulting powder detergent had an apparent density of 920 g / L and an average particle size of 380 μm.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C11D 3/39 C11D 3/39 3/395 3/395 11/00 11/00 D06L 1/12 D06L 1 / 12 3/02 3/02 (72) Inventor Hitoshi Tanimoto, 1334 Minato Minato, Wakayama City, Wakayama Prefecture Kao Corporation Research Lab (72) Inventor Hiroshi Nishimura, 1334 Minato Minato, Wakayama City Wakayama Prefecture F Term, Kao Co., Ltd. (reference) 4H003 AB03 AB15 AB19 AB21 AB44 AC08 AC23 BA10 CA15 DA01 EA12 EA15 EA16 EA19 EA21 EA28 EB08 EB09 EB19 EB22 EB30 EB36 EC02 EC03 ED02 EE05 FA28 FA43

Claims (4)

[Claims] 1. (a) 8 to 25% by mass of anionic surfactant, (b) nonionic surfactant [provided that (a) and (b) are used.
Is 20 to 40% by mass, the mass ratio of (a) / (b) is 1/2 to 5/1], and (c) 0.1 to 8 mass of a compound that releases hydrogen peroxide in water. %, And (d) a compound which reacts with hydrogen peroxide in water to generate an organic peracid, 0.1 to 5
A powder detergent composition for clothing, containing 25% by mass of JIS K 3362: 1998, containing 0.1% by mass of a 0.1% by mass aqueous solution of pH 8-12. 2. The powder detergent composition for clothes according to claim 1, wherein (c) is a sodium carbonate / hydrogen peroxide adduct and / or a sodium borate / hydrogen peroxide adduct. 3. The powder detergent composition for clothes according to claim 1, wherein (d) is one or more compounds represented by the following general formulas (1) to (4). [Chemical 1] [In the formula, R ₁ represents an alkyl group having 4 to 13 carbon atoms, R ₂ represents an alkyl group having 5 to 13 carbon atoms, and M represents a hydrogen atom or an alkali metal, an alkaline earth metal, ammonium or an alkanolamine. ] [Chemical 2] [In the formula, R ₃ , R ₄ , R ₅ , R ₆ , R ₇ , R ₉ and R ₁₀ are each independently a methyl group, an ethyl group or a hydroxyethyl group, and R ₈ has 2 to 10 carbon atoms. Is an alkylene group,
X ⁻ represents an anion. ] 4. A step of obtaining particles containing (a) and (b), a step of obtaining particles containing (c), a step of obtaining particles containing (d), and a step of mixing these particles. The method for producing a powder detergent composition for clothes according to any one of claims 1 to 3.