WO2014103690A1

WO2014103690A1 - Washing powder composition for clothes

Info

Publication number: WO2014103690A1
Application number: PCT/JP2013/083015
Authority: WO
Inventors: 西　俊紀; 尾谷佳則; 日茂貴臣
Original assignee: 花王株式会社
Priority date: 2012-12-28
Filing date: 2013-12-10
Publication date: 2014-07-03
Also published as: JP2014141641A; CN104919034B; JP5700469B2; SG11201504268SA; CN104919034A

Abstract

The present invention is a washing powder composition for clothes, containing, within a specific range respectively (A) a surfactant including (a1) alkyl benzene sulfonate and (a2) alkyl sulphate, (B) one or more compounds selected from anhydrides of magnesium sulfate and hydrates of magnesium sulfate, and (C) one or more compounds selected from zeolite and tripolyphosphate, the (a1)/(a2) mass ratio being from 1 to 5 and the (a1) and (a2) in total being contained in (A) at a proportion from 60 mass% to 100 mass%.

Description

Powder detergent composition for clothing

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

BACKGROUND ART Many detergents for clothing are mainly based on anionic surfactants such as alkylbenzene sulfonic acid (salt) as a cleaning component. It is also known that the anionic surfactant is affected by the detergency due to the hardness component of water used for cleaning. Therefore, in order to remove the hardness component from water, it is common to use a builder such as zeolite or tripolyphosphate.

In Table 11 on page 85 and Table 28 on page 102 of JP-A-2005-160476, an anionic surfactant such as sodium alkylbenzene sulfonate or sodium alkyl sulfate and anhydrous magnesium sulfate are used. A detergent composition is disclosed. In these specific examples, a large amount of phosphate builder such as tripolyphosphate is blended.

JP-T-2009-504871 discloses a solid laundry detergent composition containing particles of an anionic detersive surfactant and calcium augmentation technology and having a low content of zeolite builder and phosphate builder of less than 5% by weight. It is disclosed that magnesium or the like can be used as a dehydrating agent.

JP 2009-504836 discloses a solid laundry detergent containing an alkylbenzene sulfonate and a hydratable substance and having a low content of zeolite builder or phosphate builder of less than 5% by mass. As the hydratable substance, claim 4 of Patent Document 3 includes sodium carbonate and / or magnesium sulfate. In paragraph 0016 of JP-T-2009-504836, the purpose of using the hydratable substance is to improve the physical stability of the solid laundry detergent, particularly the cake strength, which occurs when the content of zeolite builder or phosphate builder is reduced. It is described that deterioration is suppressed. The hydratable substance disclosed in JP-T-2009-504836 preferably has a predetermined hydration index, and the description in paragraph 0024 suggests that the hydratable substance is anhydrous.

Japanese Patent Application Laid-Open No. 2012-236978 contains a fragrance component having menthol, camphor and logPow of 2 or more and 7 or less, and one or more detergent components selected from the group consisting of surfactants, alkali agents and sequestering agents. In addition, a detergent composition for hand-washing laundry that can perceive a cool feeling during hand-washing is disclosed.

JP 2012-500306 discloses an ultra-concentrated liquid laundry detergent composition containing a nonionic surfactant, an anionic surfactant, and a cold water dispersion aid and having excellent water dispersibility at low temperatures. ing. Claims 11 and 12 describe magnesium sulfate heptahydrate as a cold water dispersion aid.

US Pat. No. 5,013,486 describes DETERGENT BAR containing 2.9% by weight of a 25% by weight aqueous solution of alkyl benzene sulfonate, alkyl sulfate and magnesium sulfate. Magnesium sulfate is described to harden DETERGENT BAR.
Summary of invention

In the present invention, the following component (A) is 10% by mass or more and 30% by mass or less, and the component (B) is 1.5% by mass or more and 10% by mass or less as converted to magnesium sulfate anhydride, and (C ) Component is contained in an amount of 8% by mass or less, the mass ratio of the component (a1) to the component (a2) (a1) component / (a2) component is 0.5 or more and 5 or less, and the component (a1) This relates to a powder detergent composition for clothing containing 60% by mass or more and 100% by mass or less in the component (A).
(A) Component: Surfactant containing the following (a1) component and (a2) component (a1) Component: Alkylbenzenesulfonate (a2) Component: Alkyl sulfate (B) Component: Magnesium sulfate anhydride and magnesium sulfate One or more compounds (C) selected from hydrates of: One or more compounds selected from zeolite and tripolyphosphate

Further, the present invention is a washing liquid obtained by mixing 1 g or more and 10 g or less of the powder detergent composition for clothing of the present invention with 1 liter of water having a German hardness of 5 ° DH or more and 30 ° DH or less, and washing clothes by hand. The present invention relates to a method for washing clothes.
Detailed Description of the Invention

Hand-washing clothes such as fashionable clothes is also done in Japan. Furthermore, in Southeast Asia, it is known that even everyday clothes have a custom of hand washing and washing.

In Southeast Asia, the environment is hot and humid, and it takes time and labor to wash hands, and oily dirt such as sebum stains adheres to clothes. In addition, there is a high hardness region where the water hardness exceeds 5 ° DH (especially 8 ° DH). It has been found that if there are a lot of sebum stains in the cleaning liquid, there will be a problem that the soiling of the clothes will be reduced and bubbles will not be formed due to sebum stains, and the bubbles will not persist. The detergents used are (1) not only removing dirt from clothes, but also newly (2) foaming firmly when washing hands, and (3) warming hands when washing. It became clear that there was a need to feel good without becoming too much. In addition, mud stain is one of the stains that are difficult to remove, and higher detergency has been demanded. It has been clarified that “(1) Dirty removal of clothing” also requires removal of mud stains.

In order to reduce the hardness component in water and suppress the decrease in the detergency of the anionic surfactant, a component that reduces the hardness of water is used as zeolite or tripolyphosphate.
However, it has become clear that blending these components in a large amount is not only economically undesirable, but also has a problem that foaming during hand-washing and the foam is difficult to sustain.

That is, in the detergent composition used for hand-washing, the foam is firmly formed at the time of hand-washing, the foam is sustained, the feel of the cleaning liquid is good, and the content of zeolite and tripolyphosphate is reduced. Even if it is reduced, it is desired that high oily soil cleaning power and dirt cleaning power of particles such as mud are developed with high hardness water.

The present invention can maintain high oily soil cleaning power, foaming during hand washing, and persistence of foam after hand washing, even when washed with water having high hardness and a large amount of sebum dirt. Disclosed is a powder detergent composition for clothing that is not too hot during washing and feels good. Furthermore, the present invention provides a powder detergent composition for clothing, which is excellent in cleaning power for mud dirt adhering to clothing even when water having high hardness is used.

According to the present invention, even when washed with water having a high hardness and a large amount of sebum dirt, it is possible to maintain high oily dirt cleaning power, foaming during hand washing, and persistence of foam after hand washing. The present invention provides a powder detergent composition for clothing suitable for hand-washing, in which the hand does not become too hot during hand-washing and has a good feel. Furthermore, the present invention provides a powder detergent composition for clothing, which is excellent in cleaning power for mud dirt adhering to clothing even when water having high hardness is used.

In the embodiment of the present invention, the following component (A) is 10% by mass or more and 30% by mass or less, (B) component is 1.5% by mass or more and 10% by mass or less, and component (C) is 8% by mass. % (A1) component and (a2) component mass ratio (a1) component / (a2) component is 0.5 or more and 5 or less, and (a1) component and (a2) component are totaled And the powder detergent composition for clothes which contains 60 mass% or more and 100 mass% or less in (A) component is included.
(A) component: surfactant containing the following (a1) component and (a2) component (a1) component: alkylbenzene sulfonate (a2) component: alkyl sulfate (B) component: magnesium sulfate heptahydrate (C ) Ingredient: One or more compounds selected from zeolite and tripolyphosphate In addition, the embodiment of the present invention includes 1 g or more and 10 g or less of the powder detergent composition for clothing of the present invention, and a German hardness of 5 ° DH or more. The present invention relates to a method for washing clothes, in which clothes are washed by hand with a washing liquid mixed with 1 liter of water of 30 ° DH or less.

<(A) component>
The component (A) is a surfactant containing the following component (a1) and component (a2) under predetermined conditions.
(A1) Component: Alkylbenzenesulfonate (a2) Component: Alkyl sulfate

[(A1) component]
The alkylbenzene sulfonate of the component (a1) is not particularly limited, but for example, an alkyl group having 8 or more carbon atoms, preferably 10 or more, more preferably 12 or more, and 20 or less, preferably 16 or less. An alkylbenzene sulfonate having a linear alkyl group is preferable.

From the viewpoint of detergency and storage stability of the composition, examples of the alkylbenzene sulfonate include alkali metal salts such as sodium and potassium, alkanolamine salts, and the like. When preparing the composition of the present invention, an alkylbenzene sulfonic acid (acid type) may be added to the composition and neutralized with an alkali in a mixed system of powder components to form an alkyl benzene sulfonate. After summing, it may be added to the composition. A base such as sodium hydroxide, potassium hydroxide, lithium hydroxide, or ammonium hydroxide can be used for neutralization of the alkylbenzene sulfonic acid. The salt constituting the component (a1) is preferably an alkali metal salt such as sodium or potassium, more preferably a sodium salt.

[(A2) component]
The component (a2) of the present invention is an alkyl sulfate, and the alkyl group preferably has 10 to 16 carbon atoms. That is, the component (a) is preferably an alkyl sulfate having an alkyl group having 10 or more and 16 or less carbon atoms, preferably a linear alkyl group. The component (a2) is preferably an alkyl sulfate in which the proportion of linear alkyl groups having 12 to 16 carbon atoms in all alkyl groups is 50% by mass or more. From the viewpoint of foaming during washing and foam persistence, the proportion of linear alkyl groups having 12 carbon atoms in all alkyl groups is preferably 40% by mass or more, more preferably 50% by mass or more, more preferably 60% by mass. Alkyl sulfates as described above are preferred. In the component (a2), the proportion of linear alkyl groups having 12 to 16 carbon atoms in all alkyl groups is 50% by mass or more, and the proportion of linear alkyl groups having 12 carbon atoms in all alkyl groups is The alkyl sulfate salt is preferably 40% by mass or more, more preferably 50% by mass or more, and more preferably 60% by mass or more. Further, from the viewpoint of reducing environmental burden by using reproducible raw materials, the proportion of linear alkyl groups in all alkyl groups in component (a2) is preferably 50% by mass or more, more preferably 70% by mass or more. Preferably, 90% by mass or more is more preferable, 99% by mass or more is more preferable, and 100% by mass, that is, the component (a2) is more preferably a linear alkyl sulfate.

Examples of the salt constituting the component (a2) include alkali metal salts such as sodium and potassium, alkanolamine salts, and alkaline earth metal salts such as magnesium and calcium. From the viewpoint, an alkali metal salt is preferable, and a sodium salt is more preferable.

In the present invention, the mass ratio of the (a1) component to the (a2) component (a1) component / (a2) component is 0.5 or more and 5 or less.
Even if the powder detergent composition for clothing of the present invention contains a large amount of the component (B), the mass ratio of the component (a1) / the component (a2) is 5 or less from the point that the detergency of mud dirt can be maintained. Yes, 4.8 or less is preferable, 4.6 or less is more preferable, 4.3 or less is more preferable, 4.0 or less is more preferable, 3.5 or less is more preferable, 2.5 or less is more preferable, 2 .4 or less is more preferable, 2.2 or less is more preferable, and 2.0 or less is more preferable.
Even if the powder detergent composition for clothing of the present invention contains a large amount of magnesium sulfate heptahydrate, the mass ratio of component (a1) / component (a2) is 5 from the viewpoint of maintaining the detergency of oil stains. 4.8 or less is preferable, 4.6 or less is more preferable, 4.3 or less is more preferable, 2.5 or less is more preferable, 2.4 or less is more preferable, and 2.2 or less is more preferable. 2.0 or less is more preferable, and 1.8 or less is more preferable.
From the viewpoint of maintaining the detergency of oil stains even when the powder detergent composition for clothing of the present invention contains a large amount of magnesium sulfate hydrate or anhydride other than magnesium sulfate heptahydrate, component (a1) The mass ratio of the / (a2) component is 5.0 or less, preferably 4.8 or less, more preferably 4.6 or less, more preferably 4.3 or less, more preferably 2.5 or less, and 2. 4 or less is more preferable, 2.2 or less is more preferable, 2.0 or less is more preferable, and 1.8 or less is more preferable.
From the viewpoint of foam persistence at the time of washing under high hardness conditions, the mass ratio of the component (a1) / the component (a2) is 0.5 or more, preferably 0.6 or more, more preferably 0.7 or more. Preferably, 0.9 or more is more preferable.
From the viewpoint of achieving both the oil stain detergency and the foam persistence during washing, the mass ratio of the component (a1) / the component (a2) is preferably 0.9 or more and 1.8 or less.
From the viewpoint of achieving both the detergency of oil stains and mud stains and the foam sustainability during washing, the mass ratio of (a1) component / (a2) component is preferably 0.9 or more, more preferably 1.1 or more, 1.2 or more is more preferable, 1.4 or more is more preferable, 1.5 or more is more preferable, 6.0 or less is preferable, 5.0 or less is more preferable, 4.8 or less is more preferable, 4 0.6 or less is more preferable, 4.3 or less is more preferable, 2.5 or less is more preferable, 2.4 or less is more preferable, 2.2 or less is more preferable, and 2.0 or less is more preferable.

In the present invention, the component (a1) and the component (a2) are contained in a total of 60% by mass to 100% by mass in the component (A). From the viewpoint of foaming during hand washing and foam persistence, the component (a1) and the component (a2) are combined, and the component (A) is preferably 70% by mass or more, more preferably 80% by mass or more, More preferably, it is 90 mass% or more, More preferably, it contains 100 mass%.

(A) As a component, surfactants other than (a1) component and (a2) component can be contained. Examples of surfactants other than the components (a1) and (a2) include polyoxyalkylene alkyl ether sulfates [polyoxyalkylene groups have an oxyalkylene group with a degree of polymerization of 1 to 10, and an alkyl group. Has a carbon number of 12 or more and 16 or less. ], Α-sulfo fatty acid alkyl ester salts, α-olefin sulfonates (α-olefins having 12 to 18 carbon atoms), and fatty acid salts having 12 to 18 carbon atoms An activator is mentioned.

In addition, as component (A), polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene fatty acid ester, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, sucrose fatty acid ester, sorbitan fatty acid ester, fatty acid alkanolamide, and alkyl glycoside Nonionic surfactants selected from: mono- or dialkylamines and polyoxyethylene adducts thereof, and cationic surfactants selected from mono- or di-long-chain alkyl quaternary ammonium salts, carbobetaines, sulfobetaines, and hydroxy Examples include amphoteric surfactants selected from sulfobetaines. The alkyl group of the nonionic surfactant, cationic surfactant and amphoteric surfactant is preferably a primary or secondary alkyl group having 12 to 16 carbon atoms. The number of carbon atoms of the fatty acid is preferably 12 or more and 16 or less. The oxyalkylene group is preferably an oxyalkylene group having 2 to 4 carbon atoms, more preferably an oxyethylene group as the oxyalkylene group. The polyoxyalkylene group is preferably a group having 2 or more and 40 or less repeating units of the oxyalkylene group. That is, when expressed by the average added mole number of alkylene oxide, the average added mole number is preferably 2 or more and 40 or less. The alkanol group is preferably an ethanol group (hydroxyethyl group).

In the component (A), the content of the surfactants other than the components (a1) and (a2) is less than 40% by mass and 30% by mass from the viewpoint of the detergency of oil stains and the foam persistence during cleaning. %, More preferably less than 20% by weight, more preferably less than 10% by weight, and more preferably 0% by weight, that is, not contained.

In preparing the powder detergent composition for clothing of the present invention, the component (A) can be blended as a mixture containing the component (a1), the component (a2) and other surfactants. Moreover, when preparing the powder detergent composition for clothes of this invention, (a1) component, (a2) component, and another surfactant can also be mix | blended separately.

[(B) component]
The component (B) is at least one compound selected from magnesium sulfate anhydride and magnesium sulfate hydrate. Component (B) can be used in combination with component (a1) and component (a2), so that even if water with high hardness is used as washing water, it is capable of cleaning sebum dirt, foaming at the time of hand washing, after hand washing The persistence of foam can be maintained.
In addition, the powder detergent composition for clothing of the present invention contains a specific amount of the component (B), so that it is used in washing with water having high hardness, for example, water having a hardness of 8 ° DH or more. Excellent cleaning performance for mud dirt. Magnesium contained in the component (B) of the present invention is a hardness component that is said to scum in the cleaning liquid with an anionic surfactant that is a cleaning component, thereby reducing the cleaning effect. Surprisingly, it has been found that when magnesium is supplied to water having a high hardness, for example, water of 8 ° DH or higher by the component (B), the detergency of mud dirt is improved.
Further, when the component (B) is a hydrate of magnesium sulfate, the feel during hand washing is improved.

Component (B) is preferably magnesium sulfate hydrate, specifically magnesium sulfate monohydrate, magnesium sulfate hexahydrate, magnesium sulfate heptahydrate, magnesium sulfate dodecahydrate. Is mentioned. Magnesium sulfate heptahydrate is more preferred. Magnesium sulfate heptahydrate has the ability to remove sebum dirt and mud dirt when water with high hardness is used as washing water, foaming at the time of hand washing, persistence of foam after hand washing, It is preferable because of excellent touch. Magnesium sulfate heptahydrate is also preferred from the standpoint of storage stability of the powder detergent composition for clothing, particularly from the point of difficulty of solidification during storage. Magnesium sulfate heptahydrate can be used in powder form or granular form.

[Component (C)]
Component (C) is one or more compounds selected from zeolite and tripolyphosphate.

Zeolite is also called crystalline aluminosilicate. As specific zeolite, crystalline aluminosilicates such as A-type, X-type, and P-type zeolite can be contained. The average primary particle diameter 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. Preferred as the crystalline aluminosilicate is A-type zeolite (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 “Ducil A24”, “ZSEO64”, etc .; all manufactured by Crosfield; oil absorption capacity 60 to 150 mL / 100 g), X type (for example, trade name “WessalithXD”; manufactured by Degussa) An oil absorption capacity of 80 to 100 mL / 100 g) and a hybrid zeolite described in International Publication No. 9842622 are also preferable.

The counter ion in the tripolyphosphate is preferably an alkali metal ion, more preferably an ion selected from sodium ions and potassium ions. In all counter ions, the mass ratio of sodium ions and potassium ions is preferably 70% by mass or more, and more preferably 85% by mass or more. Orthophosphate and pyrophosphate can be used in combination with tripolyphosphate. The amount of tripolyphosphate, orthophosphate, and mass ratio of pyrophosphate are tripolyphosphate / orthophosphate / pyrophosphate = (80 parts by mass or more and 97 parts by mass or less) / (1 part by mass or more, 10 (Parts by mass or less) / (2 parts by mass or more and 10 parts by mass or less) is preferred (the amount is calculated as an anhydride).

The powder detergent composition for clothing of the present invention preferably contains zeolite as the component (C). Moreover, the powder detergent composition for clothes of this invention can also contain a tripolyphosphate as (C) component.

[Powder detergent composition for clothing]
The powder detergent composition for clothing of the present invention is suitable for washing by hand. As will be described in detail later, it is suitable as a powder detergent composition for preparing a washing liquid used for hand washing. In addition, it is suitable as a detergent used for washing in which a part of the clothes soaked in water used for washing is brought into contact with water while being sprinkled with the powder detergent composition for clothes of the present invention. In addition, take a suitable amount of the powder detergent composition of the present invention, immerse the hand in water used for washing, and then mix with water while stirring, prepare a washing liquid, even if clothes are soaked in this washing liquid Suitable as a cleaning agent.

The content of the component (A) in the powder detergent composition for clothing of the present invention is 10% by mass or more and 30% by mass or less. The content of the component A) is preferably 12% by mass or more, more preferably 14% by mass or more, and more preferably 16% by mass or more. The content of the component (A) in the powder detergent composition for clothing of the present invention is preferably 25% by mass or less, more preferably 23% by mass or less, more preferably 21% by mass or less, from the viewpoint of economy. It is more preferably at most mass%, more preferably at most 19 mass%.

In addition, the content of the component (B) in the powder detergent composition for clothing of the present invention is 1.5 mass% or more and 10 mass% or less in terms of anhydrous conversion, that is, in terms of anhydrous conversion. It is preferably 1.6% by mass or more from the viewpoint of foaming during hand washing and persistence of the foam. 1.8 mass% or more is more preferable, 2 mass% or more is more preferable, 2.2 mass% or more is more preferable, 2.5 mass% or more is more preferable, and 3 mass% or more is more preferable. From the viewpoint of economy, detergency and feel during hand washing, the content of component (B) is preferably 8% by mass or less, preferably 7% by mass or less in the composition as a value converted to magnesium sulfate anhydride. Is more preferable, and 6 mass% or less is more preferable.

From the viewpoint of cleanability of sebum soil, the content of the component (B) in the powder detergent composition for clothing of the present invention is preferably 8% by mass or less, preferably 7% by mass as a value converted to magnesium sulfate anhydride. The following is more preferable, 6 mass% or less is more preferable, 5 mass% or less is more preferable, 4 mass% or less is more preferable, 3 mass% or less is more preferable, and 2.5 mass% or less is more preferable.

From the point of detergency of mud dirt, the content of the component (B) in the powder detergent composition for clothing of the present invention is 1.5% by mass or more, preferably as a value converted to magnesium sulfate anhydride, Is preferably 1.6% by mass or more, more preferably 1.8% by mass or more, more preferably 2.0% by mass or more, more preferably 2.5% by mass or more, more preferably 3%. 0.0 mass% or more, more preferably 4.0 mass% or more, more preferably 5.0 mass% or more, and preferably 8.0 mass% or less, and 7.0 mass% or less. More preferred.

Moreover, content of (C) component in the powder detergent composition for clothing of this invention is 8 mass% or less, and 7 mass% or less is preferable from an economical viewpoint, and 6.5 mass% or less is more. Preferably, 6 mass% or less is more preferable. The content of the component (C) is 8% by mass or less, preferably 7.5% by mass or less, more preferably 7.0% by mass or less, from the viewpoint of mud soil detergency in the composition. 0 mass% or less is more preferable, 6.5 mass% or less is more preferable, 6.0 mass% or less is more preferable, 5.5 mass% or less is more preferable, and 5.0 mass% or less is more preferable. The content of zeolite is preferably 3% by mass or more, and more preferably 4% by mass or more in the composition, from the viewpoint of sebum stain detergency and the ease with which powder can be measured by freezing. From the viewpoint of foaming at the time of washing and foam persistence, the content of the tripolyphosphate is preferably smaller, preferably 3% by mass or less, more preferably 2% by mass or less in the composition, that is, not containing, More preferably, it is 0% by mass. In addition, content of a tripolyphosphate is made into anhydrous conversion among (C) components.

The powder detergent composition for clothing of the present invention includes at least one selected from the group consisting of alkali metal carbonate (d1), alkali metal chloride (d2), and alkali metal sulfate (d3) as component (D). These compounds can be contained.

Alkali metal carbonate (d1) has the effect of increasing detergency by blending into the powder detergent composition for clothing of the present invention as an alkaline agent. Specific compounds are not particularly limited, and examples thereof include one or more compounds selected from sodium carbonate and potassium carbonate.

Alkali metal chloride (d2) and alkali metal sulfate (d3) are blended in the powder detergent composition for clothing of the present invention to increase the ionic strength in the cleaning liquid, and foaming properties and foam persistence during cleaning. Can be increased. Although it does not specifically limit as a specific compound of an alkali metal chloride (d2), One or more types of compounds chosen from sodium chloride and potassium chloride are mentioned. Moreover, the specific compound of the alkali metal sulfate (d3) is not particularly limited, and examples thereof include one or more compounds selected from potassium sulfate and sodium sulfate.

The component (D) is preferably one or more compounds selected from alkali metal carbonates (d1) and alkali metal sulfates (d3) in terms of foamability during washing and foam persistence. In terms of detergency of sebum soil, the component (D) preferably contains 20% by mass or more of alkali metal carbonate (d1), particularly sodium carbonate, more preferably 25% by mass or more, and more preferably 30% by mass or more. Is preferred. In view of foamability and durability during washing, the component (D) preferably contains 100% by mass or less of the alkali metal carbonate (d1), more preferably 90% by mass or less, and more preferably 80% by mass or less. Preferably, 70 mass% or less is more preferable. In addition, content of (D) component shall be anhydrous conversion.

In addition, the content of the component (D) in the powder detergent composition for clothing of the present invention is preferably 40% by mass or more and 70% by mass or less. From the viewpoint of detergency under high hardness conditions, foamability during hand-washing washing, and foam persistence, the content of component (D) is more preferably 50% by mass or more, and 55% by mass or more in the composition. More preferred is 65% by mass or less from the viewpoint of economy.

The powder detergent composition for clothing of the present invention can contain the following components.
(I) You may contain a surface modifier from a viewpoint of the fluidity | liquidity and non-caking property of detergent particle | grains. Examples of the surface-modified coating agent include aluminosilicates, calcium silicates, silicon dioxide, crystalline silicate compounds such as crystalline silicate compounds, clay minerals such as bentonite, talc, and clay, carboxymethylcellulose, polyethylene glycol, polyacrylic acid or the like And water-soluble polymers such as polycarboxylic acid salts such as salts, copolymers of acrylic acid and maleic acid, or salts thereof. The content of the surface modifier is preferably 20% by mass or less, more preferably 15% by mass or less, in the powder detergent composition for clothing of the present invention, from the viewpoint of storage stability. Moreover, 1 mass% or more in the detergent composition of this invention is preferable at the point of surface modification, 3 mass% or more is more preferable, and 5 mass% or more is more preferable.
(Ii) Color transfer inhibitors such as polyvinylpyrrolidone (iii) Enzymes such as cellulase, amylase, pectinase, protease, lipase (iv) Fluorescent dyes such as Tinopearl CBS (trade name, manufactured by Ciba Specialty Chemicals) and Whitetex SA (product) Name, manufactured by Sumitomo Chemical Co., Ltd.) Fluorescent dyes (v) Antioxidants such as butylhydroxytoluene, distyrenated cresol, sodium sulfite and sodium bisulfite (vii) dyes, perfumes, antibacterial preservatives, silicone Defoaming agent (viii) Water such as water in which sodium hypochlorite is added to ion exchange water, tap water, ion exchange water in an amount of 0.1 to 5 mg / kg based on the mass of water

The average particle size of the detergent composition of the present invention determined from the particle size measured by the sieving method with a sieving machine described in JIS K3362: 2008 (page 58, Chapter 8, Section 1) in terms of low-temperature solubility and stability. Is preferably 150 μm or more and 1000 μm or less, more preferably 200 μm or more and 900 μm or less, more preferably 250 μm or more and 800 μm or less.

In terms of low-temperature solubility and stability, the apparent density (g / ml) of the detergent composition of the present invention measured by the method described in JIS K3362: 2008 (page 59, Chapter 8, Section 2) is 0.15 or more. 1.2 or less, 0.2 or more and 1.1 or less are more preferable, 0.25 or more and 1.0 or less are more preferable, and 0.3 or more and 0.98 or less are more preferable.

The pH of a 1.0% by weight aqueous solution measured at 25 ° C. described in JIS K3362: 2008 (page 60, Chapter 3, Section 3) of the detergent composition of the present invention in terms of cleaning performance, foam amount and foam persistence. Is preferably 8 or more and 12 or less, more preferably 9 or more and 11.5 or less, more preferably 9.5 or more and 11 or less, and even more preferably 10 or more and 11 or less.

The method for producing the detergent composition of the present invention is not particularly limited, and can be produced by a known method. For example, spray drying method, dry neutralization method, dry granulation method, dry blend 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 a surfactant loading method and a combination thereof.

In producing the detergent composition of the present invention, the component (B) can be mixed with a slurry containing the component (A) and water, but it is even better if the powder detergent composition of the present invention is stored. In view of maintaining good fluidity, it is preferable to produce a base granule containing the component (A) and having a low water content by spray drying and mixing the component (B) with the base granule.

From the viewpoint of good foaming at the time of washing, it is preferable to produce base granules containing component (A) and 10% by mass or less of water by spray drying, and to mix component (B) with the base granules. . (B) A component may mix | blend less than 10 mass% of the whole compounding quantity with a base granule. The water content in the base granule containing the component (A) is more preferably 9% by mass or less, more preferably 8% by mass or less, in that the powder detergent for clothing of the present invention has fluidity. The mass% or less is more preferable, and 6 mass% or less is more preferable.

The powder detergent composition for clothing of the present invention is a powder detergent for clothing obtained by a production method including the following steps 1 to 3 from the viewpoint of improving the cleaning property, foaming property, and foam persistence of sebum stains and mud stains. A composition is preferred.
Step 1: A step of mixing the component (A) and water to obtain a slurry having a water content of 30% by mass to 70% by mass.
Step 2: A step of spray drying the slurry obtained in Step 1 to obtain base granules having a water content of 10% by mass or less.
Process 3: The process of mixing the base granule obtained by the process 2, (B) component, and (C) component.

(B) You may use less than 10 mass% of the whole compounding quantity in the process 1. In terms of further improving the foam persistence, the component (B) is preferably used in the step 3 at 93% by mass or more of the total blending amount, and the remainder is used in the step 1, and the component (B) is composed of the total blending amount. It is more preferable to use 95% by mass or more in Step 3, and the remainder to be used in Step 1, and it is more preferable to use the total amount of component (B) in Step 3.

The water content in the slurry obtained in Step 1 is preferably 35% by mass or more, more preferably 40% by mass or more, and preferably 65% by mass or less, and 60% by mass or less from the viewpoint of ease of production. Is more preferable.

The water content in the base granule obtained in Step 2 is preferably 9% by mass or less, more preferably 8% by mass or less, from the viewpoint that the powder detergent composition for clothing of the present invention has fluidity. 7 mass% or less is more preferable, and 6 mass% or less is more preferable.

In step 3, the base granule, the component (B) and the component (C) may be mixed at the same time. Further, two components selected from the base granule, the component (B) and the component (C) may be mixed and mixed with the remaining components.

When component (D) or an optional component is used, it can be used in any of steps 1 to 3. It is preferable to use the component (D) in step 1 in terms of ease of production. Therefore, when the component (D) is contained, the powder detergent composition for clothing of the present invention is preferably a powder detergent composition for clothing obtained by a production method including the following steps 1 ′ to 3 ′.
Step 1 ′: A step of mixing the component (A), the component (D) and water to obtain a slurry having a water content of 30% by mass to 70% by mass.
Step 2 ′: A step of spray-drying the slurry obtained in Step 1 to obtain base granules having a water content of 10% by mass or less.
Step 3 ′: A step of mixing the base granule obtained in Step 2 with the component (B) and the component (C).

[Hand washing method]
The powder detergent composition for clothing of the present invention is suitable for washing by hand. The powder detergent composition for clothing of the present invention is suitably used for hand-washing as a cleaning liquid mixed with water. As a washing method using the powder detergent composition for clothing of the present invention, 1 g or more and 10 g or less of the powder detergent composition for clothing of the present invention and 1 liter of water having a German hardness of 5 ° DH or more and 30 ° DH or less. There is a method for washing clothes, in which clothes are washed by hand with the mixed washing liquid.

In the washing method, the concentration of the powder detergent composition of the present invention in the cleaning liquid is preferably 2.5 g / L or more, more preferably 3 g / L or more, and more preferably 3.5 g / L or more from the viewpoint of detergency. preferable. On the other hand, from the viewpoint of rinsing properties, it is 10 g / L or less, preferably 8 g / L or less, and more preferably 6 g / L or less. It is more preferable to use at a concentration of 3.5 g / L or more and 5 g / L or less.

The cleaning liquid preferably contains the component (A) at a concentration of 0.03% by mass or more, more preferably 0.06% by mass or more in the powder detergent composition for clothing of the present invention, and is economical. From a viewpoint, it is preferable to contain at the density | concentration of 0.12 mass% or less, and it is more preferable to contain at the density | concentration of 0.09 mass% or less.

In the washing method, the hardness of water used for preparing the washing liquid is 5 ° DH or more and 30 ° DH or less in German hardness. In terms of excellent detergency of sebum stains, foamability during washing, and persistence of foam, 6 ° DH or more is preferable, 8 ° DH or more is more preferable, 10 ° DH or more is preferable from the viewpoint of easily realizing the effect of the present invention. Is more preferable. From the viewpoints of foaming properties during washing and foam persistence, 30 ° DH or less is preferred, 25 ° DH is more preferred, and 20 ° DH or less is more preferred. Hardness represents the total hardness determined by chelate titration method using ethylenediaminetetraacetic acid disodium salt.

Therefore, in the laundry washing method of the present invention, the powder detergent composition for clothing of the present invention is 1 g or more, preferably 2.5 g or more, more preferably 3 g or more, more preferably 3.5 g or more, and 10 g or less, preferably Has a German hardness of 5 ° DH or more, preferably 6 ° DH or more, more preferably 8 ° DH or more, more preferably 10 ° DH or more. Then, the clothes can be washed by hand with a washing liquid in which 1 liter of water of 30 ° DH or less, preferably 25 ° DH or less, more preferably 20 ° DH or less is mixed.

In the washing method, the ratio (hereinafter referred to as bath ratio) of the volume (liter) of the washing liquid containing the powder detergent composition for clothes of the present invention to the mass (kg) of the clothes is the value of washing during hand washing. From the standpoint of ease, 3 or more is preferable and [5 or more is more preferable] in [volume of washing liquid (liter)] / [mass of clothing (kg)]. The bath ratio is preferably 20 or less, and more preferably 10 or less, from the viewpoints of detergency, foaming during washing, and foam persistence.

In addition, as another specific method of using the powder detergent composition of the present invention, a portion of the clothes soaked in water used for washing is sprinkled with the detergent composition of the present invention and brought into contact with water to wash the rice. The method of doing is also mentioned. In addition, take a suitable amount of the powder detergent composition of the present invention, immerse the hand in water used for washing, and then mix with water while stirring, prepare a washing liquid, even if clothes are soaked in this washing liquid This method can realize the effect of the present invention more.

Regarding the embodiment described above, the present invention further discloses the following powder detergent composition for clothing and a method for washing the clothing.

<1> 10% by mass or more and 30% by mass or less of the following component (A), 1.5% by mass or more and 10% by mass or less of the component (B) converted to magnesium sulfate anhydride, and (C) 8% by mass or less of components, (a1) component to (a2) mass ratio (a1) component / (a2) component is 0.5 or more and 5 or less, (a1) component and (a2) The powder detergent composition for clothes which contains a component and 60 mass% or more and 100 mass% or less in a total in (A) component.
(A) Component: Surfactant containing the following (a1) component and (a2) component (a1) Component: Alkylbenzenesulfonate (a2) Component: Alkyl sulfate (B) Component: Magnesium sulfate anhydride and magnesium sulfate One or more compounds selected from the heptahydrate of (C) component: One or more compounds selected from zeolite and tripolyphosphate

<2> The powder detergent composition for clothing according to <1>, wherein the component (B) is a hydrate of magnesium sulfate.

<3> 10% by mass or more and 30% by mass or less of the following component (A), 1.5% by mass or more and 10% by mass or less of the component (B) converted to magnesium sulfate anhydride, and (C) 8% by mass or less of components, (a1) component to (a2) mass ratio (a1) component / (a2) component is 0.5 or more and 5 or less, (a1) component and (a2) The powder detergent composition for clothing according to <2>, which contains 60% by mass or more and 100% by mass or less of the component (A) in total.
(A) component: surfactant containing the following (a1) component and (a2) component (a1) component: alkylbenzene sulfonate (a2) component: alkyl sulfate (B) component: magnesium sulfate heptahydrate (C ) Component: One or more compounds selected from zeolite and tripolyphosphate

<4> (benzene) alkylbenzenesulfonic acid having (a1) component having an alkyl group having 8 or more carbon atoms, preferably 10 or more, more preferably 12 or more, and 20 or less, preferably 16 or less, more preferably a linear alkyl group The powder detergent composition for clothing according to any one of <1> to <3>, which is a salt.

<5> The component (a2) is an alkyl sulfate having an alkyl group having 10 or more and 16 or less carbon atoms, preferably a linear alkyl group, for clothing according to any one of <1> to <4> Powder detergent composition.

In the component <6> (a2), the proportion of linear alkyl groups in all alkyl groups is 50% by mass or more, preferably 70% by mass or more, more preferably 90% by mass or more, more preferably The powder detergent composition for clothing according to any one of <1> to <5>, which is 99% by mass or more, more preferably 100% by mass, that is, the component (a2) is a linear alkyl sulfate.

<7> The component (a2) is a linear alkyl group having 12 to 16 carbon atoms in the total alkyl group and a proportion of linear alkyl groups having 16 or less carbon atoms in the total alkyl group of 50% by mass or more. The powder detergent composition for clothing according to any one of <1> to <6>, wherein the alkyl sulfate is a proportion of preferably 40% by mass or more, more preferably 50% by mass or more, more preferably 60% by mass or more object.

<8> Mass ratio of (a1) component to (a2) component (a1) component / (a2) component is 0.5 or more, preferably 0.6 or more, more preferably 0.7 or more, more preferably 0. 0.9 or more and 5 or less, preferably 4.8 or less, more preferably 4.6 or less, more preferably 4.3 or less, more preferably 2.5 or less, more preferably 1.8. The powder detergent composition for clothing according to any one of <1> to <7>, which is as follows.

<9> The component (a1) and the component (a2) are totaled, and the component (A) is 60% by mass or more, preferably 70% by mass or more, more preferably 80% by mass or more, more preferably 90% by mass or more. The powder detergent composition for clothing according to any one of <1> to <8>, which is contained in an amount of 100% by mass or less, preferably 100% by mass.

<10> (A) component is 10% by mass or more, preferably 12% by mass or more, more preferably 14% by mass or more, more preferably 16% by mass or more, and 30% by mass or less, preferably 25% by mass or less, The powder detergent composition for clothing according to any one of <1> to <9>, more preferably 23% by mass or less, more preferably 19% by mass or less.

<11> The powder detergent composition for clothing according to any one of <1> to <10>, wherein the magnesium sulfate heptahydrate is powdery or granular.

<12> The component (B) converted to magnesium sulfate anhydride is 1.5% by mass or more, preferably 1.6% by mass or more. More preferably 1.8% by mass or more, more preferably 2% by mass or more, more preferably 2.5% by mass or more, more preferably 3% by mass or more, and 10% by mass or less, preferably 8% by mass or less, The powder detergent composition for clothing according to any one of <1> to <11>, more preferably 7% by mass or less, more preferably 6% by mass or less.

<13> The powder detergent composition for clothing according to any one of <1> to <12>, which contains zeolite as a component (C).

<14> The powder detergent composition for clothing according to any one of <1> to <13>, which contains tripolyphosphate as a component (C).

<15> The clothing according to any one of <1> to <14>, which contains the component (C), preferably 7% by mass or less, more preferably 6.5% by mass or less, more preferably 6% by mass or less. Powder detergent composition.

<16> The powder detergent for clothing according to any one of <1> to <15>, wherein the content of zeolite as the component (C) is 3% by mass or more, preferably 4% by mass or more in the composition Composition.

<17> The content of the tripolyphosphate as component (C) is 3% by mass or less, preferably 2% by mass or less, more preferably 0% by mass in the composition. 16> The powder detergent composition for clothing according to any one of 16).

<18> Further, as component (D), in the composition, one or more compounds selected from the group consisting of alkali metal carbonate (d1), alkali metal chloride (d2), and alkali metal sulfate (d3) The powder detergent composition for clothing according to any one of <1> to <17>, which is contained in an amount of 40% by mass to 70% by mass.

<19> The powder detergent composition for clothing according to <18>, wherein the alkali metal carbonate (d1) is one or more compounds selected from sodium carbonate and potassium carbonate.

<20> The powder detergent composition for clothing according to <18> or <19>, wherein the alkali metal chloride (d2) is one or more compounds selected from sodium chloride and potassium chloride.

<21> The powder detergent composition for clothing according to any one of <18> to <20>, wherein the alkali metal sulfate (d3) is one or more compounds selected from potassium sulfate and sodium sulfate.

<22> The component (D) is contained in the composition in an amount of 40% by mass or more, preferably 50% by mass or more, more preferably 55% by mass or more, and 70% by mass or less, preferably 65% by mass or less. The powder detergent composition for clothing according to any one of 18> to <21>.

<23> The powder detergent composition for clothes for hand washing according to any one of <1> to <22>, which is for hand washing.

<24> 1 g or more of the powder detergent composition for clothing according to any one of <1> to <23>, preferably 2.5 g or more, more preferably 3 g or more, more preferably 3.5 g or more, and 10 g or less The German hardness is 5 ° DH or higher, preferably 6 ° DH or higher, more preferably 8 ° DH or higher, more preferably 10 ° DH, preferably 8 g or lower, more preferably 6 g or lower, more preferably 5 g / L or lower. The method for washing clothes, wherein the clothes are washed by hand with a washing liquid obtained by mixing 1 liter of water of 30 ° DH or less, preferably 25 ° DH or less, more preferably 20 ° DH or less.

<25> The powder detergent composition for clothing according to any one of <1> to <17>, obtained by a production method comprising the following steps 1 to 3.
Step 1: A step of mixing the component (A) and water to obtain a slurry having a water content of 30% by mass to 70% by mass.
Step 2: A step of spray drying the slurry obtained in Step 1 to obtain base granules having a water content of 10% by mass or less.
Process 3: The process of mixing the base granule obtained by the process 2, (B) component, and (C) component.

<26> The powder detergent composition for clothing according to any one of <18> to <22>, obtained by a production method including the following steps 1 ′ to 3 ′.
Step 1 ′: A step of mixing the component (A), the component (D) and water to obtain a slurry having a water content of 30% by mass to 70% by mass.
Step 2 ′: A step of spray-drying the slurry obtained in Step 1 to obtain base granules having a water content of 10% by mass or less.
Step 3 ′: A step of mixing the base granule obtained in Step 2 with the component (B) and the component (C).
Examples The following examples describe the practice of the present invention. The examples are illustrative of the invention and are not intended to limit the invention.

The components used in the examples are shown below.
[Component (A)]
(A1-1): Sodium dodecylbenzenesulfonate [component (a1)]
(A2-1): Sodium alkyl sulfate [component (a2), composition of alkyl group: lauryl group / myristyl group / palmityl group = 67/28/5 (mass ratio)]
(A3-1): polyoxyethylene (ethylene oxide average addition mole number 21) lauryl ether

[(B) component]
The numbers in the table indicate mass% in terms of magnesium sulfate anhydride.
(B-1): Magnesium sulfate heptahydrate (b-2): Anhydrous magnesium sulfate

[Component (C)]
(C-1): Zeolite [4A zeolite, average particle size 3 μm (manufactured by Tosoh Corporation)]
(C-2): Sodium tripolyphosphate

[Component (D)]
(D1-1): Sodium carbonate (d3-1): Sodium sulfate

[Optional ingredients]
(E-1): No. 2 sodium silicate: sodium silicate (40% by mass) (manufactured by TOKUYAMA SIAM SILICA CO. LTD., The mass% in the table shows the effective amount).
(E-2): Polyacrylic acid sodium salt (40% by mass aqueous solution, weight average molecular weight 8000, mass% of effective component shown in the table)

<Example 1>
Sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 22.00 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 30.25 kg of No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 22.00 kg of sodium carbonate, sodium sulfate 44.00 kg, a polyacrylic acid sodium salt aqueous solution 1.1 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Next, the slurry was dried by spray drying to obtain base granules (water content 2.5% by mass). Further, 90.9 parts by weight of the obtained granules, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent composition. I got a thing. This powder detergent composition had an average particle diameter of 262 μm and an apparent density of JIS K3362 of 0.37 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 2>
A sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 19.97 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 32.44 kg of No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 24 kg of sodium carbonate, 47. 19 kg of polyacrylic acid sodium salt aqueous solution with a concentration of 40% by mass and 1.18 kg of water were mixed with water to prepare a uniform slurry with a moisture of 50% by mass. The slurry was then dried by spray drying to obtain base granules (water content 2.36% by mass). Furthermore, 84.76 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 10.24 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer [manufactured by Koyo Machine Industry Co., Ltd.] to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 261 μm and an apparent density of JIS K3362 of 0.36 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 3>
Sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 24.18 kg of sodium alkylsulfate paste with a concentration of 30% by mass, 33.25 kg of No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 24.18 kg of sodium carbonate, sodium sulfate 48.36 kg, a polyacrylic acid sodium salt aqueous solution 1.21 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Subsequently, this slurry was dried by spray drying to obtain base granules (water content 0.31% by mass). Further, 82.71 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 12.3 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer [manufactured by Koyo Machine Industry Co., Ltd.] to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 265 μm and an apparent density of JIS K3362 of 0.38 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 4>
14.39 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 31.17 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 30.25 kg of an aqueous solution of sodium silicate No. 2 with a concentration of 40% by mass, 22.00 kg of sodium carbonate, sodium sulfate 44.00 kg, a polyacrylic acid sodium salt aqueous solution 1.1 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Next, the slurry was dried by spray drying to obtain base granules (water content 2.5% by mass). Further, 90.9 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 290 μm and an apparent density of JIS K3362 of 0.37 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 5>
15.43 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 33.43 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 32.44 kg of No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 23.60 kg of sodium carbonate, sodium sulfate 47.19 kg, 1.18 kg of a polyacrylic acid sodium salt aqueous solution having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. The slurry was then dried by spray drying to obtain base granules (water content 2.36% by mass). Furthermore, 84.76 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 10.24 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer [manufactured by Koyo Machine Industry Co., Ltd.] to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 289 μm and an apparent density of JIS K3362 of 0.38 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 6>
25.30 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 18.33 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 30.25 kg of a sodium silicate aqueous solution with a concentration of 40% by mass, 22.00 kg of sodium carbonate, sodium sulfate 44 kg of a polyacrylic acid sodium salt aqueous solution 1.1 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Subsequently, this slurry was dried by spray drying to obtain a base granule (water content 5.5% by mass). Further, 90.9 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle diameter of 267 μm and an apparent density of JIS K3362 of 0.34 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 7>
A sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 16.92 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 30.25 kg of a sodium silicate aqueous solution with a concentration of 40% by mass, 22.00 kg of sodium carbonate, sodium sulfate 44.00 kg, a polyacrylic acid sodium salt aqueous solution 1.1 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Subsequently, this slurry was dried by spray drying to obtain a base granule (water content 5.5% by mass). Further, 90.9 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 290 μm and an apparent density of JIS K3362 of 0.35 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Example 8>
A sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 21.51 kg of a sodium alkylsulfate paste with a concentration of 30% by mass, 29.57 kg of a No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 21.51 kg of sodium carbonate, sodium sulfate 43.01 kg, a polyacrylic acid sodium salt aqueous solution 1.08 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Next, the slurry was dried by spray drying to obtain base granules (water content 10.60% by mass). Furthermore, 93 parts by weight of the obtained base granules, 5 parts by weight of zeolite, and 2 parts by weight of anhydrous magnesium sulfate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent composition. This powder detergent composition had an average particle diameter of 275 μm and an apparent density of JIS K3362 of 0.32 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Examples 9 to 18>
In Example 1, the powder detergent composition for clothing of this invention was manufactured so that it might become a composition of Table 2 or Table 3 suitably changing the kind and quantity of each component. At that time, in Example 18, magnesium sulfate heptahydrate was blended into the slurry before spray drying (used in Step 1).
In Examples 1 to 18, detergent compositions were prepared by the production method including Steps 1 to 3. In Examples 1 to 17, the component (B) was used in Step 3, and in Example 18, the component (B) was used in Step 1.

<Comparative Example 1>
17.81 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65 mass%, 21.05 kg of sodium alkyl sulfate paste with a concentration of 30 mass%, 28.95 kg of No. 2 sodium silicate aqueous solution with a concentration of 40 mass%, 21.05 kg of sodium carbonate, sodium sulfate 42.11 kg, 1.05 kg of a polyacrylic acid sodium salt aqueous solution having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Next, the slurry was dried by spray drying to obtain base granules (water content 12.6% by mass). Furthermore, 95 parts by weight of the obtained base granule and 5 parts by weight of zeolite were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent composition. This powder detergent composition had an average particle size of 263 μm and an apparent density of JIS K3362 of 0.39 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Comparative Example 2>
17.99 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 21.26 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 29.23 kg of No. 2 sodium silicate aqueous solution with a concentration of 40% by mass, 21.26 kg of sodium carbonate, sodium sulfate 42.52 kg, 1.06 kg of polyacrylic acid sodium salt aqueous solution having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. The slurry was then dried by spray drying to obtain base granules (water content 11.68% by mass). Further, 94.08 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 0.92 part by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 292 μm and an apparent density of JIS K3362 of 0.35 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Comparative Example 3>
27.08 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65 mass%, 3.67 kg of sodium alkyl sulfate paste with a concentration of 30 mass%, 30.25 kg of an aqueous solution of sodium silicate No. 2 with a concentration of 40 mass%, 22.00 kg of sodium carbonate, sodium sulfate 44.00 kg, a polyacrylic acid sodium salt aqueous solution 1.1 kg having a concentration of 40% by mass and water were mixed to prepare a uniform slurry having a water content of 50% by mass. Next, the slurry was dried by spray drying to obtain base granules (water content 8.5% by mass). Further, 90.9 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle diameter of 278 μm and an apparent density of JIS K3362 of 0.39 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Comparative example 4>
10.15 kg of sodium dodecylbenzenesulfonate aqueous solution with a concentration of 65% by mass, 11.00 kg of sodium alkyl sulfate paste with a concentration of 30% by mass, 8.8 kg of polyoxyethylene lauryl ether (EO = 21.0), 2 of a concentration of 40% by mass Sodium silicate aqueous solution 30.25 kg, sodium carbonate 22.00 kg, sodium sulfate 44.00 kg, polyacrylic acid sodium salt aqueous solution 1.1 kg with a concentration of 40% by weight and water were mixed to prepare a uniform slurry with a water content of 50% by weight. did. Next, the slurry was dried by spray drying to obtain base granules (water content 8.5% by mass). Further, 90.9 parts by weight of the obtained base granule, 5 parts by weight of zeolite, and 4.1 parts by weight of magnesium sulfate heptahydrate were mixed using a concrete mixer (manufactured by Koyo Machine Industry Co., Ltd.) to obtain a powder detergent. A composition was obtained. This powder detergent composition had an average particle size of 285 μm and an apparent density of JIS K3362 of 0.38 g / mL. The composition of the obtained powder detergent composition is shown in Table 1.

<Comparative Examples 5 to 10>
In Comparative Example 1, a powder detergent composition for clothing was manufactured so as to have the composition shown in Table 2 by appropriately changing the type and amount of each component.
In Comparative Examples 1 to 10, detergent compositions were prepared by the production method including the above-described Steps 1 to 3. When the component (B) was blended in the comparative example, it was used in step 3.

<Performance evaluation>
The following evaluation was performed about the powder detergent composition obtained by the Example and the comparative example. The results are shown in Tables 1 to 3. In the following evaluation method, a powder detergent composition having a performance satisfying the acceptance criteria is a powder detergent composition for clothing suitable for hand washing of the present invention.

(1) Detergency Evaluation (1-1) Detergency Evaluation of Sebum Dirt <Production of Artificial Contaminated Cloth>
The artificially contaminated fabric used was a 6 cm x 6 cm cotton / polyester broad blended dyeing fabric (cotton / polyester ratio = 35/65, purchased from Tanigami Shoten, hereinafter referred to as “raw fabric”) and a model having the following composition: Gravure coating is applied so that the sebum stain is 100 mg per sheet.
-Model sebum stain A model sebum stain having the following composition was used.
Lauric acid 0.44%, myristic acid 3.15%, pentadecanoic acid 2.35%, palmitic acid 6.31%, heptadecanoic acid 0.44%, stearic acid 1.6%, oleic acid 7.91 mass%, triolein 13.33 mass%, n-hexadecyl palmitate 2.22 mass%, squalene 6.66 mass%

<Cleaning conditions>
Powder detergent composition 3 described in Tables 1 to 3 in 1 liter of water having a hardness of 10 ° DH (Ca / Mg = 6/4, mass ratio), 0.2 g of model sebum soil, 0.3 ml of glacial acetic acid 5 pieces of artificial model sebum soil-contaminated cloth were put into a cleaning liquid (30 ° C.) containing 5 g. Next, a 6 cm × 12 cm cotton / polyester broad blended dyeing cloth was introduced and the bath ratio was adjusted to 20. Washing was performed with a tartometer at 180 rpm for 3 minutes.

Detergency was measured by measuring the reflectance at 550 nm before and after cleaning of the unstained base fabric and model sebum soil-stained fabric with a colorimetric color difference meter (Nippon Denshoku Co., Ltd. Z-300A) The rate (%) was determined. The average value was obtained by measuring each of the five contaminated cloths. A cleaning rate of 60% or more is an acceptable line, and a higher numerical value is more preferable.
Washing rate (%) = 100 × [(reflectance of model sebum soil contaminated cloth after washing-reflectance of model sebum soil contaminated cloth before washing) / (reflectance of raw cloth-model sebum soil contaminated cloth before washing) Reflectivity)]

(1-2) Evaluation of mud dirt cleaning power <Preparation of mud-contaminated cloth>
The artificially contaminated fabric used was described in paragraphs 0030 to 0038 of JP-A-10-204769 using a cotton knitted fabric of 10 cm × 10 cm (100% cotton, purchased from Tanigami Shoten, hereinafter referred to as “raw fabric”). A mud-contaminated cloth was prepared by the manufacturing method.

<Detergency test operation>
5 L of water having a temperature of 30 ° C. and a hardness of 10 ° DH (Ca / Mg = 6/4, mass ratio) was charged into a polypropylene basin having a diameter of 36 cm, a depth of 13 cm, and a capacity of 11 L. 17.5 g of a powder cleaning composition for clothing was added to water in the basin. The water was stirred by hand so that water would not scatter from the basin, and was uniformly dispersed or dissolved to prepare a cleaning solution. One mud-contaminated cloth was sewn on one L-size Gunze YG undergarment. Five of these underwears were immersed in the cleaning solution for 30 minutes. After soaking, the laundry was rubbed by hand 50 times while rubbing mud-contaminated cloth sewn into the underwear. The rubbing force at that time is a rubbing force at which the cleaning power of the mud-contaminated cloth is 45% when the powder detergent composition for clothing of Comparative Example 1 is used and rubbed in the same manner. Thereafter, the underwear was placed in 5 L of water having a temperature of 30 ° C. and a hardness of 10 ° DH (Ca / Mg = 6/4, mass ratio). The operation of grabbing the neck of one undergarment and removing it from the water was performed 10 times. The above operation was performed on each of five undergarments. After squeezing the underwear by hand, the mud-contaminated cloth was removed from the underwear, dried with a press dryer, and then the cleaning power of the mud-contaminated cloth was measured.

The detergency was measured by measuring the reflectance at 550 nm before and after cleaning of the raw cloth and the mud-contaminated cloth with a colorimetric color difference meter (Z-300A manufactured by Nippon Denshoku Industries Co., Ltd.). %). A cleaning rate of 50% or more is an acceptable line, and a higher numerical value is more preferable.
Washing rate (%) = 100 × [(reflectance of mud-contaminated cloth after washing−reflectance of mud-contaminated cloth before washing) / (reflectance of raw cloth−reflectance of mud-contaminated cloth before washing)]

(2) Evaluation of bubble persistence 200 mL (temperature of 30 ° C.) of the cleaning solution in which all the cloths were taken out after the test in (1-1) Evaluation of the sebum dirt cleaning power was added to a cylindrical glass tube (diameter 5 cm) over 30 seconds. , 90 cm in height), and the foam height (cm) after standing for 5 minutes was measured.
Using the 9.3 cm which is the bubble height of Comparative Example 1 as a reference, the foam persistence relative value of the Example or Comparative Example to be compared was calculated by the following formula. As for a foam persistence relative value, 1.1 or more is a pass, and the one where a numerical value is higher is more preferable.
Foam persistence relative value = [foam height of comparative example or comparative example (cm)] / [foam height of comparative example 1 (reference composition) (cm)]

(3) Evaluation of the feeling at the time of hand-washing The feeling evaluation at the time of hand-washing performed the sensory evaluation with the palm by the following method. The results are shown in Tables 1 to 3.
Evaluation Method 18 g of the detergent composition was gently grasped with one hand, and was slowly put in 5 liters of water (hardness 10 ° DH (Ca / Mg = 6/4, mass ratio)) at a temperature of 30 ° C. 5 panelists (30s, 2 women, 3 men) who are skilled in evaluating the feel of the palm for 1 minute immediately after putting it in water while holding the composition. The average value was determined, and an average value of 0.8 or more was considered acceptable.
* Criteria 0: The touch of the palm feels hotter than the powder detergent composition of Example 8.
1: The palm feel feels slightly warm (hot), but not much hotter than the powder detergent composition of Example 8.

In the table, the mass% of the component (B) and the component (D) are based on the amount in terms of anhydrous.

Claims

The following (A) component is 10 mass% or more and 30 mass% or less, (B) component is converted into magnesium sulfate anhydride, and 1.5 mass% or more, 10 mass% or less, and (C) component is 8 The mass ratio of (a1) component and (a2) component (a1) component / (a2) component is 0.5 or more and 5 or less, and (a1) component and (a2) component are contained. The powder detergent composition for clothes which contains 60 mass% or more and 100 mass% or less in (A) component in total.
(A) Component: Surfactant containing the following (a1) component and (a2) component (a1) Component: Alkylbenzenesulfonate (a2) Component: Alkyl sulfate (B) Component: Magnesium sulfate anhydride and magnesium sulfate One or more compounds (C) selected from hydrates of: One or more compounds selected from zeolite and tripolyphosphate
The powder detergent composition for clothing according to claim 1, wherein the component (B) is a hydrate of magnesium sulfate.
The powder detergent composition for clothing according to claim 1 or 2, wherein the component (B) is magnesium sulfate heptahydrate.
The powder detergent composition for clothing according to any one of claims 1 to 3, wherein the component (C) is zeolite.
Furthermore, as the component (D), 40 masses of one or more compounds selected from the group consisting of alkali metal carbonate (d1), alkali metal chloride (d2), and alkali metal sulfate (d3) in the composition. The powder detergent composition for clothing according to any one of claims 1 to 4, which is contained in an amount of not less than 70% and not more than 70% by mass.
The powder detergent composition for clothing according to claim 5, wherein alkali metal carbonate is contained in component (D) in an amount of 20% by mass to 100% by mass.
The powder detergent composition for clothing according to any one of claims 1 to 5, which is used for washing by hand.
A washing liquid obtained by mixing 1 g or more and 10 g or less of the powder detergent composition for clothing according to any one of claims 1 to 7 and 1 liter of water having a German hardness of 5 ° DH or more and 30 ° DH or less. How to wash clothes by hand washing.