JP7109172B2 - Liquid bleach composition for textiles - Google Patents

Description

The present invention relates to liquid bleach compositions.

The liquid bleach composition has the effect of bleaching stains adhering to the items to be washed. A liquid bleaching composition containing hydrogen peroxide as a bleaching agent is currently widely used because it can be easily used for colored articles. There is a need for more stain cleaning power in liquid bleach compositions.

The following liquid bleach compositions are known.
(1) A liquid bleach composition containing hydrogen peroxide, an alkylene oxide adduct, a non-soap anionic surfactant, and a saturated fatty acid (Patent Document 1).
(2) A liquid detergent containing a semi-polar surfactant, hydrogen peroxide and a fatty acid or a salt thereof (Patent Document 2).

JP 2010-229405 A JP 2016-183253 A

The liquid bleach composition (1) is said to be capable of suppressing yellowing caused by the use of softeners. However, the detergency against yellowing that has occurred is not sufficient.
The liquid detergent of (2) is said to have superior detergency against yellowing of clothes. However, it tends to precipitate and separate during storage (low stability).
The present invention provides a liquid bleach composition with excellent detergency and stability.

ただし、Ｒ^１～Ｒ^３は、それぞれ独立に水素原子または炭素数１～３のアルキル基であり、Ｒ^４は、水素原子またはアセチル基である。
＜２＞前記成分（Ａ）の含有量が、液体漂白剤組成物のうち０．１～６質量％であり、前記成分（Ｂ）の含有量が、液体漂白剤組成物のうち０．１～３０質量％であり、前記成分（Ｃ）の含有量が、液体漂白剤組成物のうち０．５～７０質量％である、前記＜１＞の液体漂白剤組成物。
＜３＞水をさらに含み、水の含有量が、液体漂白剤組成物のうち１０～９７質量％である、前記＜１＞または＜２＞の液体漂白剤組成物。
＜４＞界面活性剤の総含有量が、液体漂白剤組成物のうち０．５～８０質量％である、前記＜１＞～＜３＞のいずれかの液体漂白剤組成物。
＜５＞成分（Ｃ）／成分（Ｂ）で表される質量比が、０．１～３０である、前記＜１＞～＜４＞のいずれかの液体漂白剤組成物。
＜６＞成分（Ｃ）／成分（Ａ）で表される質量比が、０．１～５０である、前記＜１＞～＜５＞のいずれかの液体漂白剤組成物。
＜７＞成分（Ｃ）／総界面活性剤で表される質量比が、０．２以上である、前記＜１＞～＜６＞のいずれかの液体漂白剤組成物。 The present invention has the following aspects.
<1> A liquid bleach composition comprising component (A): hydrogen peroxide, component (B): an organic solvent represented by the following formula (I), and component (C): a nonionic surfactant.

However, R ¹ to R ³ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ⁴ is a hydrogen atom or an acetyl group.
<2> The content of component (A) is 0.1 to 6% by mass in the liquid bleach composition, and the content of component (B) is 0.1 in the liquid bleach composition. ~30 mass%, and the content of component (C) is 0.5 to 70 mass% of the liquid bleach composition <1>.
<3> The liquid bleach composition of <1> or <2>, further comprising water, wherein the water content is 10 to 97% by mass of the liquid bleach composition.
<4> The liquid bleach composition according to any one of <1> to <3>, wherein the total surfactant content is 0.5 to 80% by mass of the liquid bleach composition.
<5> The liquid bleach composition according to any one of <1> to <4>, wherein the mass ratio represented by component (C)/component (B) is 0.1 to 30.
<6> The liquid bleach composition according to any one of the above <1> to <5>, wherein the mass ratio represented by component (C)/component (A) is 0.1 to 50.
<7> The liquid bleach composition according to any one of <1> to <6>, wherein the mass ratio represented by component (C)/total surfactant is 0.2 or more.

The liquid bleach composition of the present invention is excellent in detergency and stability.

In the present specification and claims, "-" indicating a numerical range means that the numerical values described before and after it are included as lower and upper limits.

The bleach composition of the present invention is a composition containing the following components (A), (B) and (C).

<Component (A)>
Component (A) is hydrogen peroxide. Component (A) is a component that has a bleaching effect and improves detergency.
The content of component (A) is preferably 0.1 to 6% by mass, more preferably 0.5 to 5% by mass, and even more preferably 1.5 to 4% by mass in the liquid bleach composition. If the content of component (A) is at least the lower limit of the above range, detergency is likely to be improved. If the content of component (A) is equal to or less than the upper limit of the range, the stability is likely to be improved.

<Component (B)>
Component (B) is an organic solvent represented by the following formula (I). Component (B) is a component that improves detergency and stability.

However, R ¹ to R ³ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ⁴ is a hydrogen atom or an acetyl group.
As the component (B), those in which 2 or 3 of R ¹ to R ³ are hydrogen atoms are preferable from the viewpoint of easily exhibiting the effects of the present invention. The number of carbon atoms in the alkyl group in R ¹ to R ³ is preferably 1 or 2, more preferably 1, from the viewpoint of easily exhibiting the effects of the present invention. As R ⁴ , a hydrogen atom is preferable because the effects of the present invention are likely to be exhibited.

Component (B) includes 3-methoxybutanol, 3-methoxy-3-methylbutanol, 3-methoxy-3-ethylbutanol, 3-methoxy-3-propylbutanol, 3-methoxy-2-methylbutanol, 3- Methoxy-2-ethylbutanol, 3-methoxy-2-propylbutanol, 3-methoxy-1-methylbutanol, 3-methoxy-1-ethylbutanol, 3-methoxy-1-propylbutanol, 3-methoxybutyl acetate, 3 -Methoxy-3-methylbutyl acetate, 3-methoxy-3-ethylbutyl acetate, 3-methoxy-3-propylbutyl acetate, 3-methoxy-2-methylbutyl acetate, 3-methoxy-2-ethylbutyl acetate, 3 -Methoxy-2-propyl butyl acetate, 3-methoxy-1-methyl butyl acetate, 3-methoxy-1-ethyl butyl acetate, 3-methoxy-1-propyl butyl acetate. As the component (B), 3-methoxybutanol, 3-methoxy-3-methylbutanol, 3-methoxy-2methylbutanol, 3-methoxy-1-methylbutanol, 3 -Methoxy-3-methylbutyl acetate is preferred, and 3-methoxy-3-methylbutanol is more preferred. Component (B) may be used alone or in combination of two or more.

The content of component (B) in the liquid bleach composition is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, even more preferably 3 to 10% by mass. If the content of component (B) is at least the lower limit of the range, detergency and stability are likely to be improved. Even if the content of component (B) exceeds the upper limit of the above range, the detergency and stability improving effects are small.

<Component (C)>
Component (C) is a nonionic surfactant. Component (C) is a component that improves detergency.
Component (C) includes polyoxyalkylene-type nonionic surfactants, alkylphenols, alkylene oxide adducts such as higher amines, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamines, fatty acid alkanolamides, polyhydric alcohol fatty acid esters, or Alkylene oxide adducts thereof, polyhydric alcohol fatty acid ethers, alkyl (or alkenyl) amine oxides, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides and the like can be mentioned. Component (C) may be used alone or in combination of two or more.

As the component (C), a polyoxyalkylene type nonionic surfactant is preferred from the viewpoint of the stability of the liquid bleach composition.
Polyoxyalkylene-type nonionic surfactants include compounds represented by the following formula (II).
R ¹¹ -X-[(EO) _p /(PO) _q ]—R ¹² (II)
provided that R ¹¹ is a hydrocarbon group, X is a divalent linking group, R ¹² is a hydrogen atom, an alkyl group or an alkenyl group, EO is an oxyethylene group, and p is is the average number of EO, PO is the oxypropylene group, and q is the average number of PO.

The number of carbon atoms in R ¹¹ is preferably 6-22, more preferably 8-22, even more preferably 10-18. The hydrocarbon group of R ¹¹ may be linear or branched, and may or may not have an unsaturated bond.
-X- includes -O-, -COO-, -CONH- and the like, and -O- is preferred.
When -X- is -O-, R ¹² is preferably a hydrogen atom.
p is preferably 3-20, more preferably 5-18. q is preferably 0 to 6, more preferably 0 to 3. The sum of p and q is preferably 5-20. When q is not 0, EO and PO may be added blockwise or randomly. Examples of the method of adding EO and PO in a block form include a method of introducing propylene oxide after introducing ethylene oxide and a method of introducing ethylene oxide after introducing propylene oxide. The addition mole number distribution of ethylene oxide and propylene oxide is not particularly limited.

The content of component (C) is preferably 0.5 to 70% by mass, more preferably 10 to 65% by mass, and even more preferably 20 to 60% by mass in the liquid bleach composition. If the content of component (C) is at least the lower limit of the above range, detergency is likely to be improved. If the content of component (C) is equal to or less than the upper limit of the range, the stability is likely to be improved.

The mass ratio represented by component (C)/component (B) (hereinafter also referred to as C/B ratio) is preferably 0.1 to 30, more preferably 0.5 to 20, and further 1 to 15. preferable. If the C/B ratio is at least the lower limit of the above range, the effects of the present invention are likely to be exhibited. If the C/B ratio is equal to or less than the upper limit of the range, the stability tends to be improved.

The mass ratio represented by component (C)/component (A) (hereinafter also referred to as C/A ratio) is preferably 0.1-50, more preferably 2-30, and even more preferably 5-25. If the C/A ratio is within the above range, the detergency is likely to be improved.

<Optional component>
The liquid bleach composition of the present invention may contain optional components commonly used in liquid bleach compositions in addition to components (A) to (C).
Optional components include a solvent, a surfactant other than component (C), a pH adjuster, a chelating agent, a radical trapping agent, an organic solvent other than component (B), a buffer, a fragrance, a hydrotrope agent, and a bleach activator. , antibacterial agents, antiseptics.

Solvents include water.
The content of water in the liquid bleach composition is preferably 10-97% by mass, more preferably 15-80% by mass, and even more preferably 20-60% by mass. If the water content is at least the lower limit of the above range, the stability is likely to be improved. If the content of water is equal to or less than the upper limit of the range, detergency is likely to be improved.

Examples of surfactants other than component (C) include anionic surfactants, cationic surfactants, amphoteric surfactants, and semipolar surfactants.
Examples of anionic surfactants include straight-chain alkylbenzenesulfonic acids or salts thereof, α-olefinsulfonates, straight-chain or branched-chain alkyl sulfates, alkyl ether sulfates, alkenyl ether sulfates, alkanesulfones. acid salts, α-sulfo fatty acid ester salts, carboxylic acid-type anionic surfactants (fatty acid salts, alkyl ether carboxylates, polyoxyalkylene ether carboxylates, alkylamide ether carboxylates, alkenylamide ether carboxylates, acylaminocarboxylates, etc.), phosphoric acid ester-type anionic surfactants (alkyl phosphate, polyoxyalkylene alkyl phosphate, polyoxyalkylene alkylphenyl phosphate, glycerin fatty acid ester monophosphate) etc.). Salt forms include alkali metal salts (sodium salt, potassium salt, etc.), alkaline earth metal salts (magnesium salt, etc.), alkanolamine salts (monoethanolamine salt, diethanolamine salt, etc.), and the like.

Examples of cationic surfactants include alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylbenzyldimethylammonium salts, alkylpyridinium salts and the like, with alkyltrimethylammonium salts being preferred. Counter ions of these salts include halogen ions such as fluoride ion, chloride ion, bromide ion and iodide ion. For example, methylsulfate ion, ethylsulfate ion and the like can be mentioned. Cationic surfactants are preferably used in the form of methylsulfate and ethylsulfate from the viewpoint of corrosiveness to equipment.
Amphoteric surfactants include alkylcarboxybetaine, alkylsulfobetaine, alkylhydroxysulfobetaine, alkylamidobetaine, imidazolinium betaine and the like.
Semipolar surfactants include amine oxide type surfactants such as lauryldimethylamine oxide and lauramidopropyldimethylamine oxide.

The total surfactant content is preferably 1 to 80% by mass, more preferably 10 to 70% by mass, and even more preferably 30 to 60% by mass in the liquid bleach composition. If the total content of surfactants is at least the lower limit of the above range, detergency is likely to be improved. When the total content of the surfactant is equal to or less than the upper limit of the above range, the effects of the present invention are easily visible.

The mass ratio represented by component (C)/total surfactant (hereinafter also referred to as C/total surfactant ratio) is preferably 0.2 or more, more preferably 0.4 or more, and 0.6 or more. More preferred. If the C/total activator ratio is at least the lower limit of the above range, the detergency tends to be improved. The upper limit for the C/total actives ratio is one.

Examples of pH adjusters include sodium hydroxide, hydrochloric acid, sulfuric acid, sodium hydroxide, potassium hydroxide, monoethanolamine, diethanolamine, triethanolamine, and ammonia.
The pH of the liquid bleach composition of the present invention is preferably 1-8, more preferably 2-6. When the pH is equal to or higher than the lower limit of the above range, detergency tends to be improved. If pH is below the upper limit of the said range, stability will be easy to improve. The pH of the liquid bleach composition (25° C.) indicates a value measured with a pH meter (HM-30G manufactured by Toa DKK Co., Ltd.) or the like.

Chelating agents include phosphonic acid-based chelating agents such as 1-hydroxyethane-1,1-diphosphonic acid. The content of the chelating agent is preferably 0.1 to 2% by mass in the liquid bleach composition.
Examples of radical trapping agents include p-methoxyphenol and dibutylhydroxytoluene. The content of the radical trapping agent is preferably 0.01 to 1 mass % of the liquid bleach composition.
Examples of organic solvents other than component (B) include phenyl diglycol and butyl carbitol. The content of organic solvents other than component (B) is preferably 0.1 to 10% by mass in the liquid bleach composition.
Buffers include citric acid, borate compounds such as sodium tetraborate, and the like. The content of the buffering agent is preferably 0.01-2% by mass in the liquid bleach composition.
Examples of the perfume include a perfume raw material alone, or a perfume composition comprising a perfume raw material, a perfume solvent, a perfume stabilizer, and the like. Fragrances commonly used in liquid detergents for clothes, liquid bleach detergents, liquid bleaches, and the like can be mentioned. The content of perfume is preferably 0.01 to 1.0% by mass in the liquid bleach composition.
Hydrotropic agents include water-miscible organic solvents such as alcohols having 2 to 4 carbon atoms, glycols, polyglycols, and alkyl ethers, toluenesulfonic acid, xylenesulfonic acid, benzoates, urea, and the like. . The content of the hydrotrope agent is preferably 0.01 to 15% by mass in the liquid bleach composition.

A bleach activator is a substance that has no bleaching effect per se, but reacts with hydrogen peroxide in a liquid bleach composition to convert it to a highly oxidizing organic peracid. As the bleach activator, tetraacetylethylenediamine, alkanoyloxybenzenesulfonic acid having an alkanoyl group having 1 to 18 carbon atoms (preferably 8 to 12 carbon atoms) or a salt thereof, 1 to 18 carbon atoms (preferably 8 carbon atoms), 12) alkanoyloxybenzoic acid having an alkanoyl group or a salt thereof. Among these, 4-decanoyloxybenzoic acid (DOBA), sodium 4-dodecanoyloxybenzenesulfonate (DOBS), and sodium 4-nonanoyloxybenzenesulfonate (NOBS) are preferred. These bleaching activators may be used singly or in combination of two or more. The content of the bleaching activator is preferably 0.1 to 2% by mass, more preferably 0.2 to 1.5% by mass, and even more preferably 0.4 to 1% by mass in the liquid bleach composition. If the content of the bleaching activator is at least the lower limit of the above range, the bleaching power against yellowing in the liquid bleach composition increases. If the content of the bleaching activator is equal to or less than the upper limit of the above range, the stability is likely to be improved.
The total content of each component contained in the liquid bleach composition does not exceed 100% by mass.

<Method for producing liquid bleach composition>
The liquid bleach composition of the present invention can be prepared, for example, by mixing component (A), component (B), component (C), and optional components as necessary, and adjusting the pH to a predetermined value as necessary. can be manufactured by adjusting

<How to use the liquid bleach composition>
The method of using the bleach composition of the present invention includes, for example, adding the liquid bleach composition alone or together with a known detergent or softener to water to form a washing liquid, putting the article to be washed in this washing liquid, and washing it in a washing machine. A method of washing, a method of dissolving the liquid bleach composition in water in advance, immersing the article to be washed in this solution, and then washing the article with a washing machine, and the like. Alternatively, after applying the liquid bleach composition to the article to be washed, the article may be left to stand as appropriate, and then normal washing may be performed.
Items to be washed include, for example, textile products such as clothes, fabrics, sheets, curtains, and carpets.
The content of the liquid bleach composition in the washing liquid is not particularly limited. The amount of liquid bleach composition added to water is, for example, 3 to 15 mL of liquid bleach composition per 10 L of water.

EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these.

<Each component>
(Component (A))
· a-1: Hydrogen peroxide (35 mass% industrial hydrogen peroxide, manufactured by Mitsubishi Gas Chemical Company, Inc.).
(Component (B))
・b-1: 3-Methoxy-3-methylbutanol (manufactured by Kuraray Co., Ltd., trade name “Solfit”, in formula (I), R ¹ = methyl group, R ² = hydrogen atom, R ³ = hydrogen atom, R ⁴ = hydrogen atom).
(Component (B'))
· b'-1: Ethanol: manufactured by Japan Alcohol Sales Co., Ltd., trade name "specific alcohol 95 degree synthesis".
(Component (C))
·c-1: A natural alcohol (primary alcohol) having 12 and 14 carbon atoms added with 10 moles of ethylene oxide. In formula (II), R ¹¹ = linear alkyl group having 12 and 14 carbon atoms, -X-=-O-, p=10, q=0, R ¹² = hydrogen atom.
c-2: polyoxyethylene alkyl ether (manufactured by Lion Corporation, trade name "Rheox CL-60", in formula (II), R ¹¹ = linear alkyl group having 12 carbon atoms and 14 carbon atoms, - X-=-O-, p=6, q=0, R ¹² = hydrogen atom).
·c-3: A secondary alcohol having 12 to 14 carbon atoms to which 7 moles of ethylene oxide is added (manufactured by Nippon Shokubai Co., Ltd., trade name "Softanol 70"). In formula (II), R ¹¹ = branched alkyl group having 12 to 14 carbon atoms, —X—=—O—, p=7, q=0, R ¹² = hydrogen atom.
· c-4: A secondary alcohol having 12 to 14 carbon atoms to which 5 moles of ethylene oxide is added (manufactured by Nippon Shokubai Co., Ltd., trade name "Softanol 50"). In formula (II), R ¹¹ = branched alkyl group having 12 to 14 carbon atoms, —X—=—O—, p=5, q=0, R ¹² = hydrogen atom.
· c-5: Natural alcohol (mass ratio of primary alcohol having 12 carbon atoms/primary alcohol having 14 carbon atoms = 7/3), ethylene oxide equivalent to 8 mol, propylene oxide equivalent to 2 mol, 8 mol A nonionic surfactant obtained by block addition of corresponding ethylene oxides in this order.
· c-6: polyoxyethylene hydrogenated castor oil (Brownon CW-20-90, manufactured by Aoki Oil Industry Co., Ltd.).

(Anionic surfactant)
- Soap: manufactured by NOF Corporation, trade name "coconut fatty acid".
· AES: Sodium polyoxyalkylene alkyl ether sulfate (sodium polyoxyethylene lauryl ether sulfate, average number of added moles of EO: 2) (manufactured by Shin Nippon Rika Co., Ltd., trade name "Sinoline SPE-1250").
- AEPS: Monoethanolamine salt of polyoxyethylene polyoxypropane-1,2-diyl alkyl ether sulfate obtained by the following synthesis method.
In an autoclave equipped with a stirring device, a temperature control device and an automatic introduction device, a linear primary alcohol having 12 carbon atoms (manufactured by Tokyo Chemical Industry Co., Ltd., trade name “1-dodecanol”, molecular weight 186.33, purity >99%) and 1.0 g of KOH were charged and dehydrated at 110° C. and 1.3 kPa for 30 minutes. After dehydration, the system was purged with nitrogen, heated to 120° C., and charged with 199 g of propane-1,2-diyl oxide. Then, after addition reaction and aging were carried out at 120° C., the temperature was raised to 145° C., and 303 g of ethylene oxide was charged. After addition reaction and aging were then carried out at 145° C., the mixture was cooled to 80° C. and unreacted ethylene oxide was removed at 4.0 kPa. After removing unreacted ethylene oxide, 1.0 g of acetic acid was added into the autoclave, stirred at 80° C. for 30 minutes, and then extracted. An alkoxylate having an average number of added moles of EO of 2.0 was obtained. The resulting alkoxylate was sulfated in a falling film reactor with SO ₃ gas. The resulting sulfate was neutralized with monoethanolamine to obtain a composition containing monoethanolamine salt (AEPS) of polyoxyethylene polyoxypropane-1,2-diylalkyl ether sulfate.
・LAS: straight-chain alkyl (10 to 14 carbon atoms) benzenesulfonic acid (manufactured by Lion Corporation, trade name “Lipon LH-200”)
(semi-polar surfactant)
- APAX: Lauramidopropyl dimethylamine oxide (manufactured by Clariant, trade name "GENAMINOX AP").
(cationic surfactant)
・ Cation: lauryl dimethylethyl ammonium ethyl sulfate (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., trade name “Cathiogen ES-L”)

(chelating agent)
- HEDP: 1-hydroxyethane-1,1-diphosphonic acid (manufactured by Rhodia, trade name "BRIQUEST ADPA").
(radical trap agent)
· p-Methoxyphenol (trade name “MQ-F” manufactured by Kawaguchi Chemical Industry Co., Ltd.).
(buffer)
- Citric acid: manufactured by Kanto Kagaku Co., Ltd., reagent "citric acid".
- Boric acid compound: sodium tetraborate pentahydrate (manufactured by Borax, "Neobor").
(perfume)
Perfume: Perfume composition A described in Tables 11 to 18 of JP-A-2002-146399.
(Hydrotropic agent)
- Para-toluenesulfonic acid: manufactured by Kanto Chemical Co., Ltd.
(Bleach activator)
- OBS: sodium 4-lauroyloxybenzenesulfonate (manufactured by Nitto Kasei Co., Ltd.).
(Antibacterial agent)
- PHMB: Polyhexamethylene biguanide (manufactured by Lonza Japan Co., Ltd., trade name "Proxel IB").
Diclosan: 4,4'-dichloro-2'-hydroxydiphenyl ether (manufactured by BASF, trade name "Tinosan HP100").
(Alkaline agent)
- Monoethanolamine (manufactured by Nippon Shokubai Co., Ltd., trade name "monoethanolamine").
(pH adjuster)
・Sodium hydroxide: manufactured by Tsurumi Soda Co., Ltd.
・Sulfuric acid: manufactured by Toho Zinc Co., Ltd.
(solvent)
・Water: purified water

<Examples 1 to 6, Comparative Examples 1 to 5>
(Preparation of liquid bleach composition)
Each component was mixed according to the composition shown in Table 1 or Table 2, and a pH adjuster was added to adjust the pH to the value shown in Table 1 or Table 2 to obtain each composition.
The unit of the compounding amount in the table is "% by mass", and all the components show the amount in terms of pure content.
Blanks in the table indicate that the component was not included.

<Detergency>
Men in their 20s to 40s wore commercially available cotton skin shirts (manufactured by BVD, 100% cotton) for one day. A worn cotton shirt and a commercially available cotton shirt (manufactured by BVD, 100% cotton) were adjusted to a total weight of 700 g, and placed in a fully automatic washing machine (Haier, JW-Z23A). Next, 16 mL of liquid laundry detergent (JAFET standard detergent) was added, and washing, rinsing, and dehydration were carried out in the standard course of the washing machine to wash the cotton-skinned shirt. The cotton-skinned shirt after washing was dried in a standard course of an electric clothes dryer (ED-45C, manufactured by TOSHIBA). The clothing, which had undergone the operations of wearing, washing, and drying 20 times, was stored on a drawer shelf at room temperature for one year. A cloth with a size of 5 cm × 5 cm is cut out from the body of this test garment, and the b value is measured with a colorimetric color difference meter (manufactured by Nippon Denshoku Co., Ltd., "SE2000"), and shows almost the same value (b value = 5±0.5) was used as an evaluation cloth (evaluation cloth before washing).

Five evaluation cloths were spread on a petri dish made of plastic so as not to overlap each other, and 0.2 mL of the liquid bleach composition of each example was dropped on each evaluation cloth, and then allowed to stand at room temperature for 10 minutes. The left evaluation cloth and 43 g of the charged cloth (cotton) were placed in a cleaning tester (Terg-O-Tometer) together with 900 mL of tap water (15° C.) and washed at 120 rpm for 10 minutes. At this time, in the liquid bleach compositions of Examples 1 to 3 and 6 and Comparative Examples 1 to 4, 0.75 g of detergent (manufactured by Lion Corporation, trade name "Top Clear Liquid") was added, and Examples 4 to 5 and The liquid bleach composition of Comparative Example 5 was washed without additional detergent. After washing, it was dehydrated and rinsed with 900 mL of tap water (15° C.) for 3 minutes. The evaluation cloth after rinsing was dehydrated and dried with an iron, and was used as the evaluation cloth after washing.

The reflectance of each of the evaluation cloth before washing and the five evaluation cloths after washing was measured with a colorimetric color difference meter (Nippon Denshoku Co., Ltd., "SE2000"), and the washing rate (%) was calculated from the following formula (s). Calculated.
Cleaning rate (%) = 100 x (reflectance of evaluation cloth before washing - reflectance of evaluation cloth after washing) / (reflectance of evaluation cloth before washing - reflectance of uncontaminated cloth) (s )
In the formula (s), the uncontaminated cloth is a piece of cloth cut to a size of 5 cm×5 cm from the body of a new cotton shirt (manufactured by BVD, 100% cotton).
The average value of the cleaning rate of five evaluation cloths was defined as the detergency, and the detergency against yellowing was evaluated according to the following criteria. ⊚, ∘, and Δ were regarded as acceptable. Results are shown in Tables 1 and 2.
A: 35% or more.
○: 30% or more and less than 35%.
Δ: 25% or more and less than 30%.
x: Less than 25%.

<Stability>
Clear glass bottles were each filled with 100 g of the liquid bleach composition of each example and sealed with a cap. This bottle was stored in a constant temperature bath at 50° C. for one week.
After such storage, the appearance of the liquid was visually observed, and the storage stability of the liquid bleach composition was evaluated according to the following evaluation criteria. Results are shown in Tables 1 and 2.
◯: It was colorless and transparent.
x: Precipitation/separation was observed.

All of Examples 1 to 5 to which the present invention was applied were excellent in detergency and stability.
Comparative Example 1 containing no component (B) was inferior in detergency.
Comparative Example 2, which did not contain component (C), was inferior in detergency.
Comparative Example 3, which does not contain component (A), was inferior in detergency.
Comparative Example 4 containing component (B') instead of component (B) was inferior in detergency.
Comparative Example 5 containing no component (B) was inferior in stability.

INDUSTRIAL APPLICABILITY The liquid bleach composition of the present invention is excellent in detergency and stability, and is useful as a liquid bleach composition for household and industrial use.

Claims (5)

Component (A): hydrogen peroxide;
Component (B): 3-methoxy-3-methylbutanol ;
Component (C): A liquid bleach composition for textile products containing a nonionic surfactant represented by the following formula (II),
The content of the component (A) is 0.1 to 6% by mass of the liquid bleach composition for textile products, and the content of the component (B) is the liquid bleach composition for textile products. 2 to 10% by mass of the above, and the content of the component (C) is 1 to 50% by mass of the liquid bleach composition for textile products,
A liquid bleach composition for textiles that does not contain a polyoxyalkylenealkylamine.
R ¹¹ -X-[(EO) _p /(PO) _q ]—R ¹² (II)
provided that R ¹¹ is a hydrocarbon group, X is a divalent linking group, R ¹² is a hydrogen atom, an alkyl group or an alkenyl group, EO is an oxyethylene group, and p is EO is the average number, a number from 3 to 20; PO is an oxypropylene group; q is the average number for PO, a number from 0 to 6; The liquid bleach composition for textiles according to claim 1, further comprising one or more selected from anionic surfactants, cationic surfactants, amphoteric surfactants and semi-polar surfactants. 3. The liquid bleach composition for textile products according to claim 1 or 2, wherein the mass ratio represented by said component (C)/ said component (B) is 1-15. The liquid bleach composition for textile products according to any one of claims 1 to 3, wherein the mass ratio represented by component (C)/component (A) is 0.1 to 50. The liquid bleach composition for textile products according to any one of claims 1 to 4, wherein the mass ratio represented by component (C)/total surfactant is 0.2 or more.