JP2008088352A - Laundry pretreatment composition and washing method using the pretreatment composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laundry pretreatment composition which contains no bleaching component such as hydrogen peroxide and exhibits sufficient detergency for hydrophilic stains and to provide a washing method using the pretreatment composition. <P>SOLUTION: The laundry pretreatment composition comprises (A) boric acid and/or the salt thereof, (B) a nonionic compound with the average number of moles of an added ethylene oxide of 3-200, (C) an amphoteric surfactant, and water and has a pH of 7-11. The washing method comprises applying the pretreatment composition to stained spots on clothes and washing the clothes after leaving the clothes for 2-12 hr at room temperature after the application. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a laundry pretreatment composition and a laundry method using the laundry pretreatment composition.

  Consciousness about cleanliness tends to increase year by year. Among them, liquid bleach products containing bleach compositions in containers have become widely accepted by consumers, and their consumption has increased year by year. ing. Among them, oxygen bleach products for clothing containing hydrogen peroxide can be used not only for white clothing but also for a wide range of clothing including colored fabrics. Not a few.

Meanwhile, among stains on clothes, for example, water-soluble stains such as polyphenols such as black tea (aqueous stains) are a kind of stains that are very difficult to remove during washing.
On the other hand, a cleaning composition and a bleaching composition corresponding to the cleaning use of the water stain have been proposed. In addition, some products have been proposed in which such a cleaning composition or bleaching composition is filled in a specific-shaped coating container to further improve usability.
For example, in order to wash aqueous stains adhered to colored clothes, a bleaching composition containing a bleaching component such as hydrogen peroxide is applied directly to the aqueous stains on the clothes and then washed. It is effective to use a washing method such as, for example, to be used for washing after being immersed in an aqueous solution of the bleaching composition.

In this regard, in Patent Documents 1 and 2, a liquid composition containing hydrogen peroxide, a surfactant, and other components, and adjusted to be weakly acidic or acidic for stabilizing hydrogen peroxide, A liquid bleaching composition and a washing method have been proposed in which it is applied directly to the soiled area and then used for washing.
However, in the case of using a bleaching composition containing hydrogen peroxide, the dye used in clothing is applied by directly applying the bleaching composition to a soiled portion of clothing and leaving it for a long time after the coating. There is a strong concern that discoloration will occur due to the effect of hydrogen peroxide.
On the other hand, when the standing time after application | coating of this bleaching agent composition is shortened, there exists a problem that sufficient detergency is not exhibited with respect to stain | pollution | contamination.

On the other hand, as a so-called “non-bleaching” cleaning composition that does not contain bleaching components such as hydrogen peroxide, for example, a detergent that removes stains by using a surfactant and an additive such as a boron compound in combination. Various agent compositions have been proposed (see, for example, Patent Documents 3 to 5).
In Patent Document 3, a coating detergent composition containing a boron compound, wherein the pH of the coating detergent composition is 6.8 or less neutral and weakly acidic, and the coating detergent composition is An acidic coating detergent composition in which the pH of a 0.1% by weight water dilution is 7 or more has been proposed.
Patent Document 4 proposes a weakly alkaline liquid detergent containing a boron compound, a surfactant, an enzyme, and a specific monoalkyl glyceryl ether.
Moreover, in patent document 5, the article for the laundry pretreatment which filled the foam discharge container with the weak alkaline composition containing a specific surfactant, an alkaline agent, and the specific chelating agent which has a calcium capture | acquisition ability is provided. Proposed.
JP 2006-16425 A JP 2006-143907 A JP 2000-109893 A JP 2001-40395 A Japanese Patent No. 3633705

The acidic coating detergent composition described in Patent Document 3 has excellent cleaning power against carbon-derived dark stains.
Moreover, the liquid detergent described in Patent Document 4 has a high cleaning effect against sebum dirt (oily dirt) such as a collar and cuff dirt.
In addition, the article for pre-washing treatment described in Patent Document 5 can obtain excellent cleaning performance against stains (oil-based stains) derived from people such as collar stains and sleeve stains.
However, as described above, those described in Patent Documents 3 to 5 are not intended for aqueous stain stains, and the cleaning power against the aqueous stain stains is not sufficient.

  The present invention has been made in view of the above circumstances, does not contain a bleaching component such as hydrogen peroxide, and exhibits a sufficient cleaning power against aqueous stains, and a pretreatment composition for washing, and It is an object of the present invention to provide a washing method using the pretreatment composition for washing.

As a result of intensive studies, the present inventors provide the following means in order to solve the above problems.
That is, the pretreatment composition for laundry of the present invention contains the following component (A), component (B), component (C) and water, and has a pH of 7 to 11.
(A) boric acid and / or a salt thereof,
(B) a nonionic compound having an average addition mole number of ethylene oxide of 3 to 200,
(C) Amphoteric surfactant.

In the pretreatment composition for laundry of the present invention, the component (B) preferably contains a polyoxyethylene alkyl ether having an HLB represented by the Davies formula of 4 to 6.4.
Moreover, in the pretreatment composition for laundry of the present invention, the compound is represented by the following general formula (1), and the HLB represented by the Davies formula is 6.5 to 8.5. It is preferable to further contain a solvent (D).

［式中、Ｒは炭素数３〜６の直鎖状もしくは分岐鎖状のアルキル基またはヒドロキシアルキル基、フェニル基のいずれかを示す。ｎは平均付加モル数であり、０以上３未満の数である。］

[Wherein, R represents a linear or branched alkyl group having 3 to 6 carbon atoms, a hydroxyalkyl group, or a phenyl group. n is an average added mole number, and is a number of 0 or more and less than 3. ]

  In the washing method of the present invention, the pretreatment composition for washing according to the present invention is applied to a stain-stained part of clothing, and after the application, left at room temperature for 2 to 12 hours and then subjected to washing. It is characterized by.

In the present claims and the present specification, the “pretreatment composition for washing” means that the pretreatment composition for washing is applied directly to a stain stain site of clothing. .
The above-mentioned “use and apply to a stain stain site of clothing” means that the stock solution of the pretreatment composition for washing is directly applied to the stain stain site of clothing, or clothing (stain stain site of clothing) is applied to the stock solution. The usage method which immerses is shown. However, an aqueous solution obtained by diluting the laundry pretreatment composition is applied to a stain stain site of clothing, or clothing (stain stain site of clothing) is immersed in an aqueous solution diluted with the laundry pretreatment composition. It also includes the usage method.

“HLB represented by the Davies' formula” is calculated by dividing the surfactant molecule into atomic groups (or functional groups) and adding numerical values (numbers) specific to each atomic group type. The value obtained by the following formula is shown.
HLB = Σ (the number of hydrophilic groups) −Σ (the number of hydrophobic groups) +7
Examples of the number of radicals specific to each atomic group are given below (atomic group: number of radicals).
[Example of hydrophilic group]
_{-OH: 1.9, -O-: 1.3,} -CH 2 CH 2 O-: 0.33, -COOH: 2.1
[Example of hydrophobic group]
-CH ₂ -, CH ₃ - and = CH -: - 0.475
_{-CH 2 CH 2 CH 2 O -} : - 0.15

  According to the present invention, a pretreatment composition for laundry that does not contain a bleaching component such as hydrogen peroxide and exhibits sufficient detergency against aqueous stain stains, and the pretreatment composition for laundry are used. Can provide laundry methods.

≪Pretreatment composition for laundry≫
The pretreatment composition for laundry of the present invention is a nonionic compound (B) having an average addition mole number of 3-200 boric acid and / or its salt (A) (hereinafter referred to as (A) component) and ethylene oxide. (Hereinafter referred to as component (B)), amphoteric surfactant (C) (hereinafter referred to as component (C)) and water, and has a pH of 7-11.
The pretreatment composition for laundry of the present invention preferably further contains a specific water-soluble solvent (D) (hereinafter referred to as component (D)).

<(A) component>
In the present invention, the component (A) is boric acid and / or a salt thereof.
In the pretreatment composition for laundry of the present invention, the effect of removing aqueous stains is improved by containing the component (A) and the components (B) and (C) described later.
As the component (A), for example, orthoboric acid (H ₃ BO ₃ ; hereinafter, simply referred to as “boric acid”); a salt formed by borate ions BO ₃ ³⁻ and BO ₄ ⁵⁻ , or a condensation thereof Anion salt (condensed borate) and the like.
Examples of the salt include alkali metal salts such as sodium salt and potassium salt; alkanolamine salts such as monoethanolamine salt and diethanolamine salt; ammonium salt and the like. Of these, alkali metal salts are preferable, and sodium salts and potassium salts are more preferable.
Among the above components (A), preferred are orthoboric acid (H ₃ BO ₃ ), sodium borate, potassium borate, ammonium borate, sodium tetraborate, potassium tetraborate, ammonium tetraborate, etc. Orthoboric acid (H ₃ BO ₃ ) and sodium tetraborate are more preferable.
Preferred examples of the sodium tetraborate include hydrated salts such as sodium tetraborate · pentahydrate and sodium tetraborate · 10 hydrate (borax).
(A) A component can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the component (A) is not particularly limited, and is preferably 0.2 to 10% by mass and more preferably 1 to 5% by mass in the pretreatment composition for washing. . By being above the lower limit of the range, the effect of removing water stains is improved. On the other hand, the storage stability at low temperature of the pretreatment composition for laundry is improved by being below the upper limit of the range.
For example, the content in the case of using sodium tetraborate hydrate as the component (A) indicates the concentration calculated in terms of sodium tetraborate (Na ₂ B ₄ O ₇ ) (ie, Na ₂ B ₄ O ₇ amount is shown).

<(B) component>
In the present invention, the component (B) is a nonionic compound having an average addition mole number of ethylene oxide of 3 to 200.
In the pretreatment composition for laundry of the present invention, the effect of removing aqueous stains is improved by including the component (B), the component (A) and the component (C) described later.
Moreover, by selecting a specific component (B), the effect of removing oily stains as well as the effect of removing aqueous stains are improved.

As the component (B), for example, polyethylene glycol, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene polyoxypropylene having an average addition mole number of ethylene oxide of 3 to 200 Examples include alkenyl ether and polyoxyethylene hydrogenated castor oil.
In such component (B), the average number of moles of ethylene oxide added is 3 to 200. The lower limit of the average added mole number is preferably 4 or more, and more preferably 5 or more. On the other hand, the upper limit of the average added mole number is preferably 150 or less, and more preferably 100 or less.
When the average added mole number is 3 or more, the effect of removing aqueous stains is improved. On the other hand, when the average added mole number is 200 or less, precipitation of the component (B) in the pretreatment composition for washing is suppressed, and storage stability is improved.
In addition, in the component (B), in the case of polyethylene glycol, it may be referred to as “average polymerization mole number” instead of “average addition mole number”.

Among the components (B), the effect of removing oily stains as well as the effect of removing watery stains is improved. Therefore, polyoxyethylene alkyl ethers and polyoxyethylenes having an average added mole number of ethylene oxide of 3 to 200 are included. Alkenyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene polyoxypropylene alkenyl ether, polyoxyethylene hydrogenated castor oil and the like are preferable. Among them, HLB represented by Davies' formula is 4 to 6.4. Certain polyoxyethylene alkyl ethers are particularly preferred. When the HLB is 4 or more, the effect of removing aqueous stains is improved. On the other hand, when the HLB is 6.4 or less, the effect of removing oily stains is improved and both stains are removed. It becomes easy to obtain with good balance.
Specifically, such polyoxyethylene alkyl ether is, for example, polyoxyethylene alkyl obtained by adding an average of 3 to 12 moles of ethylene oxide (hereinafter sometimes referred to as “EO”) to a higher alcohol having 12 to 15 carbon atoms. Ethers are preferred, and among them, polyoxyethylene alkyl ethers having an average addition mole number of EO of 5 to 8 are more preferred.

(B) A component can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the component (B) is not particularly limited, and is preferably 1 to 20% by mass and more preferably 2 to 10% by mass in the pretreatment composition for washing. By being above the lower limit of the range, the effect of removing water stains is improved. Further, it is easy to obtain a sufficient level of water stain stain removal effect in terms of commercial value. In particular, when the component (B) contains a polyoxyethylene alkyl ether having an HLB of 4 to 6.4, a sufficient level of oily stain removal effect can be easily obtained in terms of commercial value. On the other hand, when the pretreatment composition for washing is used, for example, in a trigger spray container, it is easy to obtain good foaming properties (foaming) at the time of spray application by being below the upper limit of the range. .

<(C) component>
In the present invention, the component (C) is an amphoteric surfactant.
In the pretreatment composition for laundry of the present invention, by containing the component (C) and the components (A) and (B), the effect of removing aqueous stains is improved.
In addition, by containing the component (C), when the pretreatment composition for washing is contained in a container having a foam formation mechanism such as a trigger spray container and sprayed onto an object to be washed such as clothing, Good foaming properties (foaming) can be obtained, and the laundry pretreatment composition can be brought into firm contact with the stain-stained site of the article to be washed. As a result, usability and cleaning power are improved.

Examples of the component (C) include betaine, N-alkyl or alkenyl amino acids or salts thereof, amide amino acids or salts thereof, and the like. Of these, betaine is preferable.
Specific examples of suitable component (C) include an amphoteric surfactant of the betaine acetate type or sulfobetaine type represented by the following general formula (2).

［式中、Ｒ^１は炭素数１０〜１８の直鎖状もしくは分岐鎖状のアルキル基またはアルケニル基であり；Ｒ^２は炭素数１〜５のアルキレン基であり；Ｒ^３、Ｒ^４はそれぞれ独立して炭素数１〜３のアルキル基またはヒドロキシアルキル基であり；Ｒ^５はヒドロキシ基で置換されていてもよい炭素数１〜５のアルキレン基であり；ｍは０または１であり；ＡはＣＯＮＨ、ＣＯＯ、ＮＨＣＯ、ＯＣＯ及びＯから選ばれる連結基であり；ＢはＣＯＯ⁻、ＳＯ_３ ⁻及びＯＳＯ_３ ⁻から選ばれる親水基である。Ｍは対イオンを示す。］

[Wherein, R ¹ is a linear or branched alkyl group or alkenyl group having 10 to 18 carbon atoms; R ² is an alkylene group having 1 to 5 carbon atoms; and R ³ and R ⁴ are respectively Independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group; R ⁵ is an alkylene group having 1 to 5 carbon atoms which may be substituted with a hydroxy group; m is 0 or 1; Is a linking group selected from CONH, COO, NHCO, OCO and O; B is a hydrophilic group selected from COO ⁻ , SO ₃ ^— and OSO ₃ ^— . M represents a counter ion. ]

In the formula (2), R ¹ is a linear or branched alkyl group having 10 to 18 carbon atoms, or a linear or branched alkenyl group having 10 to 18 carbon atoms.
In R ¹ , the carbon number is 10 to 18, preferably 12 to 15 carbon atoms. R ¹ is preferably a linear alkyl group having 12 to 15 carbon atoms.
R ² is an alkylene group having 1 to 5 carbon atoms, preferably an alkylene group having 2 or 3 carbon atoms, and specifically, preferably an ethylene group or a propylene group.
R ³ and R ⁴ are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, preferably a methyl group.
R ⁵ is an alkylene group having 1 to 5 carbon atoms which may be substituted with a hydroxy group.
In R ^5, alkylene groups, preferably an alkylene group having 1 to 3 carbon atoms, it is preferable specifically a methylene group, an ethylene group, a propylene group.
In R ⁵ , the number of hydroxy groups is preferably 1 to 2, more preferably 1. The bonding position of the hydroxy group may be any substitution position. For example, when the alkylene group of R ⁵ is a propylene group, R ⁵ is preferably —CH ₂ CH (OH) CH ₂ —.
m is 0 or 1, and is preferably 1 because the effect of removing aqueous stains is improved.
A is a linking group selected from CONH, COO, NHCO, OCO and O, and is preferably CONH since the effect of removing aqueous stains is improved.
B is a hydrophilic group selected from COO ⁻ , SO ₃ ^— and OSO ₃ ^— , and is preferably COO ⁻ because it has good foaming properties during spraying.
M represents a counter ion. Examples of such counter ions include alkali metal ions such as sodium ions and potassium ions; alkaline earth metal ions such as magnesium ions; ammonium ions; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; Alkali metal ions such as potassium ions are preferred.

  Among these, lauryl dimethylaminoacetic acid betaine, lauric acid amidopropyl dimethylaminoacetic acid betaine, lauryl hydroxysulfobetaine, and lauric acid amidopropyl hydroxysulfobetaine are particularly preferable.

(C) A component can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the component (C) is not particularly limited, and is preferably 0.2 to 10% by mass and more preferably 1 to 5% by mass in the laundry pretreatment agent composition. . By being above the lower limit of the range, the effect of removing water stains is improved. Moreover, when the pretreatment composition for washing is used, for example, in a trigger spray container, good foaming properties (foaming) are easily obtained during spraying. On the other hand, by being below the upper limit of the range, it is possible to balance with other components. Moreover, the raw material cost is suppressed, which is economically advantageous.

<Water>
The laundry pretreatment composition of the present invention contains water.
As the water used, for example, any of tap water, ion exchange water, pure water, distilled water and the like can be used. Of these, water from which hardness components such as calcium and magnesium present in trace amounts and heavy metals such as iron are removed is preferable, and ion exchange water is most preferable because it is advantageous in terms of cost.
The water content is not particularly limited, and is preferably 60 to 98.6% by mass and more preferably 80 to 96% by mass in the pretreatment composition for washing.

<(D) component>
In the present invention, the component (D) is a compound represented by the general formula (1), and is a water-soluble solvent having an HLB represented by the Davies formula of 6.5 to 8.5.
In the laundry pretreatment agent composition of the present invention, it is preferable to further contain the component (D). By further containing the component (D), the foaming property (foaming) during spraying is further improved when the pretreatment composition for washing is contained in a trigger spray container, for example.
In particular, when the component (B) includes a polyoxyethylene alkyl ether having an HLB represented by the Davies formula of 4 to 6.4, foamability (foaming) at the time of spraying becomes better. It is preferable to further contain the component (D).

In the formula (1), R is any one of a linear or branched alkyl group having 3 to 6 carbon atoms, a linear or branched hydroxyalkyl group having 3 to 6 carbon atoms, and a phenyl group. Indicates.
In the alkyl group of R, the carbon number is 3-6, preferably the carbon number is 3-4, more preferably the carbon number is 4, specifically propyl group, isopropyl group, butyl group. Is mentioned.
In the hydroxyalkyl group of R, the alkyl group has 3 to 6 carbon atoms, preferably 6 carbon atoms. The number of hydroxy groups is preferably 1 to 2, more preferably 1.
The bonding position of the hydroxy group may be any substitution position. For example, in the case of 6 carbon atoms, R is preferably (CH ₃ ) ₂ C (OH) CH ₂ (CH ₃ ) CH—.
n is a number from 0 to less than 3.

  In addition, in the component (D), the HLB represented by the Davies formula is 6.5 to 8.5, and the HLB is preferably 7.5 to 8. When the HLB is within this range, the foamability (foaming) during spraying is good.

  Suitable examples of the component (D) include isopropanol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, diethylene glycol monophenyl ether, hexylene glycol and the like, and diethylene glycol monobutyl ether and hexylene glycol are more preferable.

(D) A component can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the component (D) is not particularly limited, and is preferably 0.2 to 10% by mass, and preferably 0.5 to 5% by mass in the pretreatment composition for washing. More preferred. When it is at least the lower limit of the range, the foaming property (foaming) during spraying is further improved when the pretreatment composition for washing is used, for example, in a trigger spray container. On the other hand, by being below the upper limit of the range, it is possible to balance with other components. Moreover, the raw material cost is suppressed, which is economically advantageous.

<Optional component>
In the present invention, the pretreatment composition for washing is usually used in a liquid detergent composition, for example, if necessary, in addition to the components (A) to (C) and water, preferably the component (D). The components to be obtained can be appropriately blended.
Specifically, for example, a chelating agent, an antibacterial agent, a pH adjuster, a fragrance and the like can be blended.

(Chelating agent)
A chelating agent can be blended in the pretreatment composition for laundry of the present invention mainly to reinforce the effect of removing aqueous stains.
Examples of such chelating agents include phosphonic acids such as 1-hydroxyethylidene-1,1-diphosphonic acid or salts thereof; citric acid, oxalic acid, malic acid, diglycolic acid, lactic acid, malonic acid, succinic acid, tartaric acid, and the like. Carboxylic acid or its salt; Aminopolycarboxylic acid or its salt such as ethylenediaminetetraacetic acid or methylglycine diacetic acid. Among them, phosphonic acid such as 1-hydroxyethylidene-1,1-diphosphonic acid or a salt thereof, aminopolycarboxylic acid or a salt thereof is preferable, 1-hydroxyethylidene-1,1-diphosphonic acid, trisodium methylglycine diacetate Is particularly preferred.
A chelating agent can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the chelating agent is preferably 0.1 to 10% by mass and more preferably 0.5 to 5% by mass in the pretreatment composition for washing. When the blending amount is not less than the lower limit value, it is easy to obtain the reinforcing effect of the effect of removing water stains. On the other hand, the effect by containing a chelating agent is fully acquired by being below an upper limit. Moreover, the raw material cost is suppressed, which is economically advantageous.

(Antimicrobial agent)
In the pretreatment composition for laundry of the present invention, mainly for the purpose of imparting antiseptic power of the pretreatment composition for laundry, and after spraying the laundry pretreatment composition onto an article to be washed such as clothing, An antibacterial agent can be blended for the purpose of preventing the generation of odor associated with the propagation of various germs that are of concern when left for a long time.
Examples of such antibacterial agents include didecyldimethylammonium chloride, stearyltrimethylammonium chloride, benzalkonium chloride, triclosan, isopropylmethylphenol, and the like. Of these, didecyldimethylammonium chloride and benzalkonium chloride are preferable.
An antimicrobial agent can be used individually by 1 type or in combination of 2 or more types as appropriate.
The content of the antibacterial agent is preferably 0.01 to 1% by mass and more preferably 0.05 to 0.5% by mass in the pretreatment composition for washing. By being above the lower limit of the blending amount, antiseptic performance and deodorizing performance are imparted. On the other hand, by being below the upper limit, the safety to the human body is further enhanced in terms of skin irritation and the like. Moreover, the raw material cost is suppressed, which is economically advantageous.

(PH adjuster)
In order to adjust the pH of the laundry pretreatment composition to 7 to 11, a pH adjuster can be appropriately added to the laundry pretreatment composition of the present invention.
Examples of such pH adjusters include hydrochloric acid, sulfuric acid, phosphoric acid, alkyl sulfuric acid, benzoic acid, p-toluenesulfonic acid, phytic acid, triethanolamine, diethanolamine, dimethylamine, N-methylethanolamine, N-methyldiethanolamine and the like. Short chain amine compounds, alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates, alkali metal silicates, and the like can be used.
A pH adjuster can be used individually by 1 type or in combination of 2 or more types as appropriate.

(Fragrance)
A fragrance | flavor can also be further mix | blended with the pretreatment agent composition for washing | cleaning of this invention.
As the fragrance, a fragrance composition prepared by combining a plurality of fragrance raw materials is preferably used.
A list of perfume ingredients that can be used as such perfumes is described, for example, in “Perfume and Flavor Chemicals”, Vol. I and II, Stephen Arctander, Allured Pub. Co. (1994); “Synthetic fragrance chemistry and commercial knowledge”, Motoichi Into, Chemical Industry Daily (1996); “Perfume and Flavor Materials of Natural Origin”, Stephen Arctander, Allred Pub. Co. (1994); “Scent of Encyclopedia”, edited by Japan Fragrance Association, Asakura Shoten (1989); “Performer Material Performance V.3.3”, Bolens Aroma Chemical Information Service (1996); “Flower oils” , Danute Lajaujis Anonis, Allured Pub. Co. (1993).
The content of the fragrance composition is preferably 0.001 to 10% by mass, more preferably 0.01 to 1% by mass in the pretreatment composition for washing.

  The laundry pretreatment composition of the present invention may further contain other components usually contained in a liquid cleaning composition for clothing. Specifically, surfactants other than the above components, hydrotropes, inorganic salts, water-soluble polymer compounds, antioxidants, deodorants, and the like can be appropriately contained.

[PH of pretreatment composition for washing]
In the present invention, control of the pH of the laundry pretreatment composition is also important.
In the present invention, the pH of the laundry pretreatment composition is 7-11. That is, it shows neutrality to weak alkalinity. The pH is preferably pH 7 to 10, and more preferably pH 7 to 9. When the pH is 7 or more, a necessary level of aqueous stain stain removal effect can be obtained in terms of commercial value. On the other hand, when the pH is 11 or less, discoloration of clothing or the like is suppressed even when the laundry pretreatment composition is applied to clothing and then left for a long time. Moreover, the safety | security with respect to a human body increases more at points, such as skin irritation.

[Production method]
The method for producing the laundry pretreatment composition of the present invention is not particularly limited, and can be produced according to a conventional method.
As an example, the components (A) to (C), preferably the component (D), and the optional component are dissolved and mixed in water at room temperature, for example, so as to have a desired blending amount. It can manufacture by adjusting to desired pH using a pH adjuster.
Then, the pretreatment product for washing can be obtained by storing the manufactured pretreatment composition for washing in, for example, a container described later (preferably a discharge container having a foam-forming mechanism).

The laundry pretreatment composition of the present invention is stored in, for example, a container, and the laundry pretreatment composition is discharged from the container to remove stains on clothes (aqueous stains, oily stains, etc.). Can be applied to the site.
Such a container is not particularly limited. For example, a container that directly contacts an application member of the container with a stain-stained part of clothing (hereinafter, referred to as a “contact type container”) or foam. Various containers such as a discharge container having a forming mechanism can be used.
In the present invention, it is particularly preferable to use a discharge container having a foam formation mechanism. The reason for this is that, when consumers use a pretreatment product for washing, the suitability of the container, the effect of removing stains and stains, and the foaming of the pretreatment composition for washing are demonstrated. This is because the discharge container having a foam-forming mechanism is excellent in that the content (pretreatment composition for washing) can be efficiently applied to the stain-stained part of the clothes without being excessively scattered.
Below, embodiment of the container which can accommodate the pretreatment composition for washing | cleaning of this invention is shown.

(Contact type container)
As a suitable thing of a contact type container, the container etc. which are shown, for example in FIG. 1 are mentioned.
FIG. 1 is a longitudinal sectional view showing an embodiment of a contact type container.
In FIG. 1, a container 10 includes a container main body 11 for storing a pretreatment composition 16 for washing, and an application member for applying the pretreatment composition 16 for washing disposed above the container main body 11. 12 and a cap 13 for protecting the application member 12.
The application member 12 is attached to the outer peripheral portion of the portion below the opening 11 a of the container body 11. The application member 12 has a mounting portion 12a and an upper portion 12b. A female screw portion 12 d is provided on the inner surface of the attachment portion 12 a of the application member 12. The female screw portion 12 d of the application member 12 is screwed into the male screw portion 11 d of the container body 11. Alternatively, the application member 12 may be configured to be press-fitted into the outer peripheral portion of the container main body 11 without providing the female screw part 12 d on the application member 12 and without providing the male screw part 11 d on the container main body 11.
In the upper part 12b, the part (applied body) that directly contacts the stain stain site of the garment may be formed of either a polymer hard porous body or a polymer hard non-porous body having a liquid outflow hole. A molecular hard porous body is preferred.
When the container 10 is turned upside down with the cap 13 open, the pretreatment composition 16 for washing is discharged through the application member 12. In that case, the pretreatment composition 16 for washing can be apply | coated and the pretreatment of washing can be performed by making the application member 12 contact the stain | pollution | contamination stain | pollution | contamination site | part of clothing directly.

(Discharge container with foam formation mechanism)
The discharge container having the foam forming mechanism is not particularly limited, and for example, a trigger type, which sprays the contents in a spray form is preferable.
Specifically, trigger spraying is preferable, those having a foam-forming cylinder in the nozzle portion are more preferable, and those in which irregularities are formed on the inner wall surface of the foam-forming cylinder are more preferable.
In the foam tube, the inner wall diameter of the foam tube is preferably 2 to 8 mm, and more preferably 3 to 6 mm.
Examples of the trigger spray having a foam formation mechanism include a container shown in FIG.
FIG. 2 shows a liquid jet container provided with a nozzle for the liquid jet container, and FIG. 2 (a) shows a pretreatment product for washing in which the pretreatment composition for washing is contained in the liquid jet container. Schematic view; FIG. 2B is a longitudinal sectional view showing the structure of the nozzle for the liquid ejection container, and FIG. 2C is a view of the plug body and the short tube portion viewed from the front side.

In FIG. 2 (a), the laundry pretreatment agent product is contained in the container main body 33 of the liquid jet container 30 provided with the trigger pump main body 40 having the nozzle 35 for the liquid jet container. Is contained.
The trigger type liquid jet container 30 includes a container main body 33 having a neck portion 33a and a trigger pump main body 40 attached to the upper portion of the neck portion 33a. The trigger pump body 40 is connected to the liquid feed tube 37 for transporting the washing pretreatment composition 70 filled in the container body 33 into the injection cylinder 34, and the upper end of the liquid feed tube 37 in the injection cylinder 34. A suction valve (not shown), a piston portion comprising a piston 32 and a cylinder (not shown) connected to the suction valve, a jet valve (not shown) connected to the piston portion, and an injection from the jet valve It comprises an ejection mechanism comprising a liquid ejection container nozzle 35 connected through a cylinder 34, and a trigger lever 31 for driving the ejection mechanism.

Fig. 2 (b) is a longitudinal sectional view showing a liquid jetting container nozzle 35 when jetting a foamy laundry pretreatment composition, and Fig. 2 (c) is a foamy laundry pretreatment. It is a figure which shows the positional relationship when the plug body 22 and the short cylinder part 23 at the time of spraying an agent composition are seen from the front side (foaming cylinder 39 side).
2 (b) and 2 (c), reference numeral 21 denotes a liquid guide body fitted and fixed to the tip of the injection cylinder 34. The nozzle body 28 has a nozzle hole 27 in the center of the front surface thereof. A hole 22 is opened and fitted to the plug 22 at the tip of the liquid guide body 21 so as to be rotatable by the short cylinder portion 23, and the nozzle body 28, the liquid guide body 21, and the foaming cylinder 39 are used for the liquid ejection container. The nozzle 35 is schematically configured.
On the peripheral surface of the front end portion of the plug body 22, shallow grooves 60, 60 are formed from the front end surface in a circumferential direction at a plurality of locations in the generatrix direction over a certain section, and on the other hand, the protruding end portion 61 of the short cylindrical portion 23 is formed. On the inner peripheral surface, liquid passages 62, 62 are formed from the projecting end portion 61 to a certain section in the bus line direction at a plurality of locations in the circumferential direction. Further, the shallow grooves 60 and 60 communicate with the liquid passages 62 and 62 and the spin groove 63 located on the rear side surface of the nozzle hole 27. Therefore, in this liquid jet container nozzle 35, when the nozzle body 28 is in the bubble position shown in FIG. 2B, the shallow grooves 60, 60 of the plug body 22 of the liquid guide body 21 are the flow paths 62, 62. Since the spin groove 63 is opened, when the pretreatment composition 70 for washing whose pressure is increased at the piston portion is supplied, the pretreatment composition 70 for washing with high pressure is rotated at a high speed in the spin groove 63. It is ejected from the nozzle hole 27 in the form of a mist, which collides with the concave / convex cylindrical surface 50 as the inner wall surface of the foam-forming cylinder 39 to be foamed.
A liquid dripping prevention mechanism 80 is formed on the front surface of the nozzle body 28 so as to protrude toward the foam-forming cylinder 39. By this liquid dripping prevention mechanism 80, a region surrounding at least the lower side of the nozzle hole 27 is closed in the air introduction path 52 between the foam-forming cylinder 39 and the nozzle hole 27 (the lower side of the nozzle hole 27. Is provided in the area surrounding the. Thereby, it is possible to provide the liquid ejection container 30 that is prevented from dripping and has improved usability.

≪Laundry method≫
The washing method of the present invention is a method in which the pretreatment composition for washing of the present invention is applied to a stain-stained part of clothing, and after the application, left at room temperature for 2 to 12 hours and then used for washing. .
Here, in such an invention, “room temperature” means a temperature range generally assumed in a general household room, particularly in a washing machine place, a washroom, a dressing room, and the like. For example, it is 5-35 degreeC.
In this invention, the leaving time after the said application | coating is 2 to 12 hours, and it is preferable that it is 3 to 10 hours.
When the standing time is 2 hours or more, the effect of removing water stains is further improved. Moreover, the effect of removing oily stains is further improved. When the standing time is 12 hours or less, the effect of removing aqueous stains and the effect of removing oily stains can be sufficiently obtained.
Here, in the present invention, “12 hours” is considered to include the time when left unattended for one night (for example, before bathing, from the time of pretreatment performed when undressing until the start of washing the next morning). . Therefore, the washing method of the present invention is suitable for a method for washing after standing at room temperature overnight after the application, and a method suitable for washing behavior generally performed at home. is there.
Moreover, according to the washing method of the present invention, by using the pretreatment composition for washing of the present invention, a bleaching agent containing hydrogen peroxide, for example, even if the standing time after the application is 12 hours Unlike the case where a composition is used, the discoloration of clothing can be suppressed.

In the washing method of the present invention, the pretreatment composition for washing of the present invention is applied directly to a stain-stained part of clothing.
As such a washing method, for example, the pretreatment composition for washing of the present invention (stock solution) is directly applied to a stain stain site of clothing, and after being applied, left as it is at room temperature for 2 to 12 hours. And a method of washing by putting the clothes in a washing machine in which water is stored.

According to the present invention, a pretreatment composition for laundry that does not contain a bleaching component such as hydrogen peroxide and exhibits sufficient detergency against aqueous stain stains, and the pretreatment composition for laundry are used. Can provide laundry methods.
The laundry pretreatment composition of the present invention has no concern about discoloration of clothing, and exhibits sufficient detergency against polyphenol-based aqueous stains such as black tea adhering to colored clothing. is there.
Moreover, according to the pretreatment composition for washing of the present invention, it exhibits a sufficient cleaning power against oily stains.
Moreover, the pretreatment composition for washing of the present invention is suitable for a discharge container having a foam formation mechanism such as a trigger spray, and has good foaming when housed in the discharge container and applied to a stain stain site. Properties (foaming) can be obtained and coating can be performed efficiently. Furthermore, it is easy to use when housed in a container, for example, liquid dripping from the spray nozzle portion is unlikely to occur.
The washing method of the present invention can be used without fear of discoloration of clothing even if the pretreatment composition for washing is applied to clothing and then left for a long time and dried.

  Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. “%” Means “% by mass” unless otherwise specified.

≪Manufacture of pretreatment composition for laundry≫
Using the following raw materials, the pretreatment composition for laundry of each example was produced.
The pretreatment composition for laundry of each example is manufactured by dissolving each component in purified water according to the composition shown in Tables 1 and 2 and adjusting the pH shown in Tables 1 and 2 using a pH adjuster. did.
The pH of the laundry pretreatment composition of each example is the pH of the laundry pretreatment composition adjusted to 25 ° C., and is a glass electrode type pH meter (product name: HM-30G, manufactured by Toa DKK Corporation). ) Is a measured value.
However, the compounding amounts in Tables 1 and 2 represent pure equivalents. Moreover, the quantity (remainder) of purified water was adjusted so that the total amount might be 100 mass%.

<Description of raw materials shown in Tables 1 and 2>
The names of the components used for blending the pretreatment compositions for laundry listed in Tables 1 and 2 and the manufacturer names are shown below.
-(A) component.
a-1: Boric acid (manufactured by Kominato Pharmaceutical Co., Ltd.).
a-2: Sodium borate pentahydrate (trade name: NEOBOR, manufactured by BORAX).
a′-1: Sodium carbonate (trade name: soda ash, manufactured by Tokuyama Corporation; comparative component).

-(B) component.
b-1: Polyethylene glycol (average polymerization mole number of ethylene oxide: about 4, trade name: PEG # 200, manufactured by Lion Corporation).
b-2: Polyethylene glycol (average number of moles of ethylene oxide polymerization: about 22, trade name: PEG # 1000, manufactured by Lion Corporation).
b-3: Polyethylene glycol (average polymerization mole number of ethylene oxide: about 200, trade name: PEG # 6000P, manufactured by Lion Corporation).
b-4: Polyoxyethylene glyceryl trioxystearate [average added mole number of ethylene oxide: 20, trade name: EMALEX HC-20W, manufactured by Nippon Emulsion Co., Ltd.]
b-5: Polyoxyethylene lauryl ether (average added mole number of ethylene oxide: 3, HLB: 4.2, trade name: EMALEX 703, manufactured by Nippon Emulsion Co., Ltd.).
b-6: Polyoxyethylene lauryl ether (average added mole number of ethylene oxide: 5, HLB: 4.9, trade name: EMALEX 705, manufactured by Nippon Emulsion Co., Ltd.).
b-7: Polyoxyethylene lauryl ether (average added mole number of ethylene oxide: 9, HLB: 6.2, trade name: EMALEX 709, manufactured by Nippon Emulsion Co., Ltd.).
b-8: Polyoxyethylene lauryl ether (average added mole number of ethylene oxide: 15, HLB: 8.2, trade name: EMALEX 715, manufactured by Nippon Emulsion Co., Ltd.).
b′-1: ethylene glycol (manufactured by Mitsubishi Chemical Corporation; comparative component).

-(C) component.
c-1: lauryldimethylaminoacetic acid betaine (trade name: Levon LD-36, manufactured by Sanyo Chemical Industries, Ltd.).
c-2: lauric acid amidopropyldimethylaminoacetic acid betaine (trade name: LPB-30, manufactured by Otsuka Kogyo Co., Ltd.)
c-3: Laurylhydroxysulfobetaine (trade name: Obazoline AHS-103, manufactured by Toho Chemical Industry Co., Ltd.)
c-4: Lauric acid amidopropyl hydroxysulfobetaine (trade name: Softazoline LSB, manufactured by Kawaken Fine Chemical Co., Ltd.)
c′-1: Lauryldimethylamine oxide (trade name: AX agent, manufactured by Lion Akzo Corporation; comparative component).

-(D) component.
d-1: Isopropyl alcohol (carbon number: 3, HLB: 7.5, manufactured by Mitsui Chemicals, Inc.).
d-2: Ethylene glycol monobutyl ether (carbon number: 4, HLB: 7.3, trade name: butyl glycol, manufactured by Nippon Emulsifier Co., Ltd.).
d-3: Diethylene glycol monobutyl ether (carbon number: 4, HLB: 7.7, trade name: butyl diglycol, manufactured by Nippon Emulsifier Co., Ltd.).
d-4: Diethylene glycol monophenyl ether (carbon number: 6, HLB: 6.7, trade name: phenyl diglycol, manufactured by Nippon Emulsifier Co., Ltd.).
d-5: Hexylene glycol (carbon number: 6, HLB: 8.0, manufactured by Mitsui Chemicals, Inc.).
d′-1: ethanol (carbon number: 2, HLB: 8.0, first grade reagent, manufactured by Gansu Chemical Industry Co., Ltd .; comparative component).
d′-2: Propylene glycol (carbon number: 3, HLB: 9.4, manufactured by Asahi Denka Kogyo Co., Ltd .; comparative component).

-Optional ingredients.
e-1: 1-hydroxyethylidene-1,1-diphosphonic acid (trade name: Kirest PH-210, manufactured by Kirest Co., Ltd.).
e-2: Trisodium methylglycine diacetate (trade name: Torriron M, manufactured by BASF Japan Ltd.).
f-1: Didecyldimethylammonium chloride (trade name: ARCARD 210-80E, manufactured by Lion Akzo Corporation).
f-2: Benzalkonium chloride (manufactured by NOF Corporation).
Fragrance | flavor: The fragrance | flavor composition A of Tables 11-18 of Unexamined-Japanese-Patent No. 2002-146399.
pH adjuster: 1N-sulfuric acid (reagent, manufactured by Kanto Chemical Co., Inc.) or 1N-sodium hydroxide (reagent, manufactured by Kanto Chemical Co., Inc.).

≪Evaluation≫
The obtained pretreatment composition for laundry of each example was evaluated by the following evaluation methods and evaluation criteria, and the results are shown in Tables 1 and 2.

<Evaluation of detergency against aqueous stains>
(Preparation of contaminated cloth)
Put 1L of boiling tap water (3 ° DH) in a 2L beaker made of glass, and then put 5 tea bags (Nitto Tea Earl Gray, Mitsui Norin Co., Ltd.) and stir lightly for 5 minutes. After that, the tea bag was taken out. Thereafter, one piece of cotton broad # 100 (30 cm × 30 cm) was immersed in the beaker and left for 30 minutes.
Next, the cotton broad # 100 was taken out from the beaker, and the one that was air-dried by hanging and drying was cut into a size of 2 cm × 2 cm and used as a contaminated cloth.

(Washing method)
Next, spread 5 sheets of the above-mentioned contaminated cloth on a petri dish made of polystyrene (diameter 9 cm) so as not to overlap, drop 0.24 mL / sheet of the pretreatment composition for washing of each example, and then cover the lid. Without being allowed to stand in a room at 25 ° C. and 45% RH for 6 hours.
The “dropping” operation here was performed as an alternative to the method of applying using a contact type container shown in FIG.
Next, using a Terg-O-Tomometer, 900 g of tap water (15 ° C., 4 ° DH), 0.6 g of contaminated cloth after standing, powder detergent for clothing (trade name: Top, manufactured by Lion Corporation) and charge 30 g of cloth (cotton knitted cloth) was added and washed at 120 rpm for 10 minutes.
Then 100% o. w. f. After dehydrating until it became, the process of rinsing with 900 mL of tap water (15 ° C., 4 ° DH) for 3 minutes was repeated twice and finally dehydrated.

(Evaluation method of cleaning power)
Next, the dehydrated contaminated cloth is dried with an iron, and the Z value of the contaminated cloth before and after washing is measured using a colorimetric color difference meter (product model name: SE2000, manufactured by Nippon Denshoku Co., Ltd.) and washed according to the following formula: The rate (%) was calculated.
Washing rate (%) = (Z value of contaminated cloth after washing−Z value of contaminated cloth before washing) / (Z value of raw cloth−Z value of contaminated cloth before washing) × 100
In the formula, “raw fabric” refers to cotton broad # 100 (30 cm × 30 cm) that has not been subjected to contamination treatment in the preparation of the above-mentioned contaminated fabric.
In the cleaning rate (%) shown in Tables 1 and 2, the average value of five contaminated cloths was shown.
(Evaluation criteria)
In this evaluation, it was determined that if the average value of the cleaning rate was 50% or more, sufficient cleaning power was exhibited against aqueous stains.

<Evaluation of detergency against oily stains>
(Preparation of contaminated cloth)
Ethanol / chloroform in which 6% by mass of rapeseed oil (Nisshin Canola Oil, Nisshin Oillio Group Co., Ltd.) and 0.004% by mass of Sudan IV (Oil Red, Tokyo Chemical Industry Co., Ltd.) are dissolved 1 / 0.12 mL of 1 (mass ratio) solution was dropped onto a cotton knitted fabric (1.5 cm × 1.5 cm) and air-dried for 12 hours, and used as a contaminated fabric.

(Laundry method, detergency evaluation method)
The method for washing the contaminated cloth and the method for evaluating the detergency described in the above <Evaluation of detergency against aqueous stains> (Laundry), except that the pretreatment compositions for washing in Examples 8 to 15 were used. Method) and (Evaluation method of detergency) were performed in the same manner, and the cleaning rate (%) was calculated.
In addition, in the cleaning rate (%) shown in Tables 1 and 2, an average value of five contaminated cloths was shown.
(Evaluation criteria)
In this evaluation, when the average value of the cleaning rate was 60% or more, it was determined that sufficient cleaning power was exhibited against oily stains.

<Evaluation of foamability during spraying>
The contents of a commercial product (trade name: Kitchen Daily Pure, manufactured by Johnson Co., Ltd.) in which a trigger spray container having a foam formation mechanism similar to that of the liquid injection container shown in FIG. It was washed several times with ion exchange water and dried.
Using such a trigger spray container filled with 200 mL of the pretreatment composition for washing of Examples 8 to 15, it is applied horizontally from a distance of 10 cm away from the cotton towel toward a vertically standing cotton towel. Spraying was performed by pulling the trigger lever of the trigger spray container. At that time, the foaming properties of the pretreatment composition for washing in each example were evaluated by 5 adult boys and 5 adult girls based on the following criteria.
The average value of 10 people in total was shown in the foamability (point) at the time of spraying shown in Table 2.
(Evaluation criteria)
5 points: Even if the trigger lever is pulled with a strong force, it foams firmly.
4 points: If you pull the trigger lever with normal force, it will foam well, but if you pull it with strong force, the bubble will sag.
3 points: If you pull the trigger lever with normal force, it will foam well, but if you pull it with strong force, it will hardly foam.
2 points: Even if the trigger lever is pulled with normal force, the bubbles hang down.
1 point: Even if the trigger lever is pulled with normal force, there is almost no foaming.
In this evaluation, if the average value of foaming property during spraying was 4.0 points or more, it was determined that the foaming property during spraying was good.

<Evaluation of discoloration>
(Method for preparing the test dyed fabric)
0.1 g of dye (CI Reactive Blue 13), 5 g of sodium sulfate, and 0.3 g of sodium carbonate were placed in a 200 mL beaker and dissolved in 100 mL of ion exchange water at 50 ° C.
Next, 10 pieces of cotton broad # 100 (5 cm × 5 cm) were put into the 200 mL beaker and dyed with stirring at 50 ° C. for 90 minutes.
Separately, 0.6 g of sodium dodecyl sulfate (SDS) was taken in a 500 mL beaker, and 300 mL of ion exchange water at 50 ° C. was added and dissolved.
The dyed cotton broad # 100 was taken out from the 200 mL beaker, charged into the SDS solution (500 mL beaker), and stirred for 10 minutes.
Separately, 300 mL of ion exchange water at 50 ° C. was taken into a 500 mL beaker, and cotton broad # 100 taken out from the SDS solution was added thereto, followed by rinsing with stirring for 5 minutes.
Then, the rinsed cotton broad # 100 was taken out and dried with an iron to prepare a test dyed fabric.

(Washing method, discoloration evaluation method)
Next, the test dyed cloth is spread on a petri dish made of polystyrene (diameter 9 cm) so that it does not overlap, and 0.24 mL / sheet of the pretreatment composition for washing in each case is dropped. Without leaving in a room at 25 ° C. and 45% RH for 12 hours.
Next, using a Terg-O-Tometer, the test dyeing cloth after standing in 900 mL of tap water (15 ° C., 4 ° DH), a powder detergent for clothing (trade name: Top, manufactured by Lion Corporation) 0.6 g Then, 30 g of charge cloth (cotton knitted cloth) was added and washed at 120 rpm for 10 minutes.
Then 100% o. w. f. After dehydrating until it became, the process of rinsing with 900 mL of tap water (15 ° C., 4 ° DH) for 3 minutes was repeated twice and finally dehydrated.
Thereafter, the dried test dyed cloth and the dry test dyed cloth after being rinsed and rinsed with a powder detergent for clothing in the same manner as above without being treated with the pretreatment composition for washing, Discoloration was evaluated by comparison by visual observation.

  From the results of Table 1, the laundry pretreatment compositions of Examples 1 to 7 according to the present invention are sufficient for aqueous stain stains as compared to the laundry pretreatment compositions of Comparative Examples 1 to 4. It was confirmed that the cleaning power was demonstrated.

From the results of Table 2, it was confirmed that all of the laundry pretreatment compositions of Examples 8 to 15 according to the present invention exhibited sufficient detergency against aqueous stain stains.
In addition, the pretreatment composition for laundry of Examples 8 to 14 containing a polyoxyethylene alkyl ether having an HLB of 4 to 6.4 represented by the Davies formula as the component (B) is the component (B). It was confirmed that the cleaning power against oily stains was higher than that of the pretreatment composition for laundry of Example 15 containing no oil.
Moreover, the pretreatment composition for washing | cleaning of Examples 8-12 and Example 15 which further contains (D) component in this invention does the pretreatment for washing of Examples 13-14 which does not contain the said (D) component. It was confirmed that the foaming property during spraying was better than that of the agent composition.

Further, from the results of evaluation of discoloration, it was confirmed that no discoloration of clothes was observed even when the pretreatment composition for washing was applied to the test dyed cloth and left for 12 hours.
Therefore, the laundry pretreatment composition of Examples 1 to 15 according to the present invention is applied to clothing, and after the coating, the laundry method is used for clothing after being left at room temperature for a long time. It was confirmed that the discoloration of the clothing was suppressed without damaging the dye.

It is a longitudinal cross-sectional view which shows one Embodiment of a contact type container. FIG. 2 (a) is a schematic view showing a pretreatment product for washing in which a pretreatment composition for washing is housed in the liquid jetting container. 2 (b) is a longitudinal sectional view showing the structure of the nozzle for the liquid ejection container, and FIG. 2 (c) is a view of the plug body and the short cylinder portion viewed from the front side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container 11 Container main body 11a Opening part 11d Male thread part 12 Application member 12a Attachment part 12b Upper part 12d Female thread part 13 Cap 16 Washing pretreatment composition 21 Liquid guide body 22 Plug body 23 Short cylinder part 27 Nozzle hole 28 Nozzle body 30 Trigger type liquid injection container 31 Trigger lever 32 Piston 33 Container body 33a Neck 34 Injection cylinder 35 Liquid injection container nozzle 37 Liquid feeding tube 39 Foaming cylinder 40 Trigger pump main body 50 Convex and concave cylinder surface 52 Air introduction path 60 Shallow groove 61 Projection End 62 Liquid passage 63 Spin groove 70 Pretreatment composition for washing 80 Liquid dripping prevention mechanism

Claims (4)

A pretreatment composition for laundry, comprising the following (A) component, (B) component, (C) component and water, and having a pH of 7-11.
(A) boric acid and / or a salt thereof,
(B) a nonionic compound having an average addition mole number of ethylene oxide of 3 to 200,
(C) Amphoteric surfactant.   The laundry pretreatment composition according to claim 1, wherein the component (B) contains a polyoxyethylene alkyl ether having an HLB of 4 to 6.4 represented by the Davies formula. The compound represented by the following general formula (1), further comprising a water-soluble solvent (D) having an HLB represented by a Davies formula of 6.5 to 8.5. A pretreatment composition for washing.

[Wherein, R represents a linear or branched alkyl group having 3 to 6 carbon atoms, a hydroxyalkyl group, or a phenyl group. n is an average added mole number, and is a number of 0 or more and less than 3. ]   The pretreatment composition for washing according to any one of claims 1 to 3 is applied to a stain stain site of clothing, and after the application, left at room temperature for 2 to 12 hours and then used for washing. And washing method.

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