JPH0649496A - Liquid bleaching agent auxiliary and two pack type bleaching agent composition - Google Patents

Abstract

PURPOSE:To provide a liquid bleaching agent auxiliary comprising an aqueous solution containing an amphoteric surfactant and a bleaching-activating agent capable of reacting with hydrogen peroxide to produce an organic peroxide, having a transparent appearance, excellent in storage stability and bleaching force, and useful for clothes, etc. CONSTITUTION:The auxiliary comprises an aqueous solution containing (A) an amphoteric surfactant such as a sulfobetaine type surfactant and (B) a bleaching-activating agent comprising one kind or more of compounds of formulas I and II [R is alkyl, alkenyl, (alkyl-substituted) aryl; n is 0, 1; L is a releasable group; R' is 1-20C alkyl, alkenyl, (alkyl-substituted) aryl] preferably in an amount of 0.1-50wt.% based on the total amount of the components A and B in an A/B weight ratio of 50/1 to 1/5. A two-pack type bleaching agent composition is obtained from (a) an agent comprising the auxiliary and (b) an agent comprising an aqueous solution containing hydrogen peroxide or a bleaching peroxide compound capable of producing the hydrogen peroxide in an aqueous solution.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a liquid bleaching aid and a liquid bleaching composition, and more particularly to a liquid bleaching aid having excellent storage stability and a bleaching power comprising the liquid bleaching aid. It relates to a good two-part bleach composition.

[0002]

2. Description of the Related Art The bleaching agent is chemically classified into a chlorine bleaching agent and an oxygen bleaching agent. In addition, when physically classified, it can be divided into a solid state (powder) and a liquid state.

Since chlorine-based bleaching agents have limited fibers that can be used, cannot be used for colors and patterns, and have unique odors, oxygen-based bleaching agents that do not have these drawbacks have recently been developed. It is becoming extremely popular.

Among the oxygen-based bleaching agents, solid ones such as sodium percarbonate and sodium perborate are particularly used in view of bleaching performance and stability, and liquid bleaching agents using hydrogen peroxide are used. However, due to its simplicity, it has become quite popular.

The oxygen-based bleaching agent has a weaker bleaching power than the chlorine-based bleaching agent, and various bleaching activators are used together. This bleaching activator is represented by nitriles such as acetonitrile and glucose pentaacetate (GPAC).
O-acetylated product, tetraacetylethylenediamine (T
Examples thereof include N-acylated compounds represented by AED) and acid anhydrides represented by maleic anhydride.

In addition, as a result of the research conducted by the present inventors, Japanese Patent Laid-Open No. 63-63
-233969, JP-A-63-315666, JP-A-64-
Compounds that react with hydrogen peroxide to form an organic peracid having a quaternary ammonium group, as exemplified in JP-A-68347 and JP-A-1-190654, are extremely excellent as bleach activators. Have been found. Examples of organic peracid precursors having an anionic group are disclosed in Japanese Examined Patent Publication No. 63-12520 and US Pat. No. 4,681,592.

In the case of solid compositions, storage stability is obtained by mixing the solid persalts with the solid activators as dry particles which produce organic peracids. As long as they are kept dry during storage, no significant reaction or activity loss occurs until the mixture is placed in water in a washing machine or the like. For example, in a high humidity environment, such as in a bathroom, the dry bleach becomes damp and less active. It is not possible to obtain dry particulate bleach when liquid hydrogen peroxide is used as the peroxide source.

To date, several proposals have been made for liquid hydrogen peroxide bleach compositions. Among them, JP-A-62-230897 discloses that a bleaching activator that generates an organic peracid is used. Active compositions are disclosed. However, this composition is not transparent and the bleaching activator is dispersed therein, and the bleaching activator precipitates and separates during storage. Further, no liquid bleaching composition in which a bleaching activator which produces an organic peracid is dissolved has been found.

[0009]

Therefore, there is a need for a liquid oxygen bleaching agent having a bleaching activator which is made transparent by dissolving it and has improved storage stability and higher bleaching power. It is to provide such a liquid oxygen bleach composition.

[0010]

DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies to obtain a transparent liquid oxygen bleaching composition having excellent storage stability and having a higher bleaching power, and as a result of the bleaching activator, It is found that the bleaching activator is stabilized by dissolving the compound in an amphoteric surfactant, and that a bleaching agent aid in which the bleaching activator is uniformly and transparently dissolved can be obtained. Using an aqueous solution containing hydrogen peroxide or a peroxygen bleaching compound capable of producing hydrogen peroxide in an aqueous solution 2
It has been found that the above object can be achieved by using a dosage-type oxygen-based bleaching composition, and the present invention has been completed.

That is, the present invention provides: (a) an amphoteric surfactant, (b) a transparent liquid bleaching aid which comprises an aqueous solution containing a bleaching activator which reacts with hydrogen peroxide to produce an organic peracid, and , (A) an amphoteric surfactant (b) an agent A comprising a transparent aqueous solution containing a bleaching activator which reacts with hydrogen peroxide to produce an organic peracid, and (c) an aqueous solution containing hydrogen peroxide. Alternatively, the present invention provides a two-part bleaching composition comprising agent B which comprises a peroxygen bleaching compound capable of producing hydrogen peroxide in an aqueous solution.

Examples of the amphoteric surfactant (a) used in the present invention include sulfobetaine or carbobetaine having a linear or branched alkyl group or alkenyl group having 1 to 20 carbon atoms. More preferable amphoteric surfactants include sulfobetaine and carbobetaine represented by the following general formula (A).

[0013]

[Chemical 7]

[In the formula, R ₁₁ is an alkyl group having 8 to 22 carbon atoms, R ₁₂ and R ₁₃ are alkyl groups having 1 to 3 carbon atoms, and R ₁₄ is 1 to 5 carbon atoms which may contain a hydroxyl group. An alkylene group of

[0015]

[Chemical 8]

E is an alkylene group having 1 to 5 carbon atoms, and a and b are
a = 0 and b = 0, or a = 1 and b = 1, and Y ⁻ is —SO ₃ ^— , —OSO ₃ ^— or —COO ⁻ , or —OCOO ⁻ . ] In the above general formula (A), R ₁₁ has 8 to 22 carbon atoms.
And an alkyl group having 12 to 18 carbon atoms is particularly preferable. R ₁₂ and R ₁₃ are alkyl groups having 1 to 3 carbon atoms, and particularly preferably methyl group having 1 carbon atom. For sulfobetaine, R ₁₄ is preferably a propylene group having 3 carbon atoms or a hydroxypropylene group. In the case of carbobetaine, R ₁₄ is preferably an alkylene group having 1 carbon atom or 3 to 5 carbon atoms. And especially in the case of carbobetaine

[0017]

[Chemical 9]

It is possible to use one in which E is a propylene group (a = b = 1). In the present invention, the amount of these amphoteric surfactants in the liquid bleaching aid is 0.05 to 40% by weight, preferably 0.5 to 20% by weight.

The bleach activator (b) used in the present invention which reacts with hydrogen peroxide to produce an organic peracid is not particularly limited as long as it can be solubilized with an amphoteric surfactant. Examples include triacetin, acid anhydrides of fatty acids having 2 to 18 carbon atoms, sodium alkanoyloxybenzene sulfonate (AOBS), and the like. Preferred bleach activators include compounds represented by the following general formula (I).
The compound represented by the general formula (I) may produce an organic peracid having a quaternary ammonium group.

[0020]

[Chemical 10]

The carbon number of R in the general formula (I) is preferably about 1-20. Also, for L,

[0022]

[Chemical 11]

And the like.

Further, preferred bleach activators include compounds represented by the following general formula (II).

[0025]

[Chemical 12]

Further, a preferable bleaching activator is a bleaching activator which produces an organic peracid having a quaternary ammonium group, specifically, a bleaching activator represented by the following general formula (III).

[0027]

[Chemical 13]

A, b is a = 0, b = 0, or a =
1, b = 1 and j is 0 or 1. R ₂ and R ₃ are alkyl groups having 1 to 2 carbon atoms. The linking group is a divalent group and is not particularly limited, and examples thereof include a linear or branched alkylene group, a cycloalkylene group, a phenylene group or an alkylenephenylene group, and an oxyalkylene group.
Is a (-CH ₂ CH ₂ O-) and the like. Further, examples of the leaving group include those shown below, but are not limited to these.

[0029]

[Chemical 14]

In the general formula (III), X ⁻ is an inorganic or organic counterion, but the leaving group is

[0031]

[Chemical 15]

In the case of, X ⁻ does not exist. Specific examples of the compound represented by the general formula (III) include the following.

[0033]

[Chemical 16]

The bleaching activator (b) which reacts with the above-mentioned amphoteric surfactant (a) and hydrogen peroxide to form an organic peracid is (a) + (b) in a total amount of 0.1 in the liquid bleaching aid. ˜50% by weight, preferably 6-45% by weight. The weight ratio of the component (a) to the component (b) is (a) / (b) 50/1 to 1/5, preferably
It is 10/1 to 1/1.

The liquid bleaching aid of the present invention is a bleaching agent containing sodium percarbonate and sodium perborate when used.
Used in combination with sodium percarbonate, detergent containing sodium perborate, hydrogen peroxide bleach, etc.

In the two-pack bleach composition of the present invention, the above liquid bleach aid is used as agent A, and as agent B, (c) hydrogen peroxide is 0.5 to 10% by weight, preferably 2 to 6% by weight. A peroxygen bleaching compound capable of producing hydrogen peroxide in an aqueous solution, such as an aqueous solution containing 5 to 100% by weight of solid peroxide, preferably a powder mixture containing 30 to 95% by weight. It will be. As the solid peroxide, sodium perborate monohydrate, sodium perborate tetrahydrate, sodium carbonate hydrogen peroxide adduct, a mixture thereof and the like are preferable. When the above-mentioned liquid bleaching aid is used as the agent A of the two-pack type liquid bleaching agent composition, the compounding ratio of the component (a) and the component (b) in the agent A is the same as above. Also, (a) component and (b)
The weight ratio of the components is also the same as above. Further, the combined ratio of the agent A and the agent B is not particularly limited, but is preferably about equal weight. In the case of a two-pack type bleaching agent composition, any form may be used so long as Part A and Part B are not mixed until use.

The composition of the present invention can be applied to agents A and B in the above-mentioned manner.
Water or inorganic salt is added to components (a) to (c) to achieve balance, but in addition, surfactants, chelating agents, dispersants, thickeners, fragrances, dyes, fluorescent dyes, enzymes, etc. are required. You may mix | blend according to.

[0038]

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

Example 1 Various bleaching compositions shown in Table 1 were prepared using the bleaching activators shown below, and the respective bleaching effects, storage stability and separation state were investigated. The results are shown in Table 1.

[0040]

[Chemical 17]

Evaluation method of bleaching effect Mini washing machine containing 0.133% commercial detergent solution (pH = 10.2) (N
ational Mini Mini, 7 liters of liquid), 4.7 cc of each of the agents A and B of the composition shown in Table 1 was added, and the following black tea-contaminated cloth ^* was washed for 5 minutes each for 5 minutes, then rinsed with tap water, After drying, the bleaching rate was calculated by the following formula. The reflectance was measured using a Nippon Denshiki colorimetric color difference meter N-DR 101-DP.

[0042]

[Equation 1]

* Black tea contaminated cloth 80 g of Nitto black tea (yellow package) was boiled in 3 liters of ion-exchanged water for about 15 minutes, then rubbed with de-salted cotton and soaked with cotton gold cloth # 2003 cloth, Boil for 15 minutes. It was removed from the heat as it was, allowed to stand for about 2 hours, naturally dried, washed with water until the washing liquid became colorless, dehydrated, pressed, and made into a test piece of 8 × 8 cm, which was subjected to an experiment.

Evaluation Method of Storage Stability A sample is stored in a glass transparent container for 14 days in a thermostatic chamber at 40 ° C. and 80% RH, and the amount of the bleach activator which produces organic peracid in the sample before and after storage. Was measured and the residual rate of the effective bleaching activator was calculated by the following formula.

[0045]

[Equation 2]

Evaluation Method of Separation State After the above-mentioned preserved sample was allowed to stand for 3 days, the separation state of the agent A was evaluated according to the following criteria. ◯: Entirely uniform solution ×: Precipitation has occurred

[0047]

[Table 1]

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Claims (12)

[Claims] 1. A transparent liquid bleaching aid comprising an aqueous solution containing (a) an amphoteric surfactant (b) a bleaching activator which reacts with hydrogen peroxide to produce an organic peracid. 2. A bleaching activator (b) is represented by the following general formula (I):
The liquid bleaching aid according to claim 1, which is one kind or two or more kinds of the compounds represented by: [Chemical 1] 3. The bleach activator (b) is represented by the following general formula (II):
The liquid bleaching aid according to claim 1, which is one kind or two or more kinds of the compounds represented by: [Chemical 2] 4. A bleaching activator (b) is represented by the following general formula (III):
The liquid bleaching aid according to claim 1, which is one kind or two or more kinds of the compounds represented by: [Chemical 3] 5. The liquid bleaching agent auxiliary according to claim 1, wherein the amphoteric surfactant (a) is a sulfobetaine-type amphoteric surfactant. 6. (a) an amphoteric surfactant, (b) a bleaching activator which reacts with hydrogen peroxide to produce an organic peracid, (a) + (b) = 0.1 to 50% by weight, (a) / (B) = 50 / 1-
A transparent liquid bleaching aid consisting of an aqueous solution contained in a range of 1/5 (weight ratio). 7. An (A) amphoteric surfactant (b) an agent A comprising a transparent aqueous solution containing a bleach activator which reacts with hydrogen peroxide to produce an organic peracid, and (c) hydrogen peroxide. A two-pack bleaching composition comprising a B agent comprising a peroxygen bleaching compound capable of producing an aqueous solution containing hydrogen peroxide or an aqueous solution containing hydrogen peroxide. 8. A bleaching activator (b) is represented by the following general formula (I):
The two-pack bleach composition according to claim 7, which is one kind or two or more kinds of the compounds represented by. [Chemical 4] 9. The bleaching activator (b) is represented by the following general formula (II):
The two-pack bleach composition according to claim 7, which is one kind or two or more kinds of the compounds represented by. [Chemical 5] 10. The bleach activator (b) is represented by the following general formula (II
The two-pack bleach composition according to claim 7, which is one or more compounds represented by I). [Chemical 6] 11. The two-component bleaching composition according to claim 7, wherein the amphoteric surfactant (a) is a sulfobetaine-type amphoteric surfactant. 12. (a) an amphoteric surfactant, (b) a bleaching activator which reacts with hydrogen peroxide to produce an organic peracid, (a) + (b) = 0.1 to 50% by weight, (a) / (B) = 50 / 1-
Agent A consisting of a transparent aqueous solution contained in a range of 1/5 (weight ratio), and (c) an aqueous solution containing 0.5 to 10% by weight of hydrogen peroxide or a peroxygen bleaching compound capable of producing hydrogen peroxide in the aqueous solution. A two-component bleaching composition comprising agent B.