JPH1135984A - Liquid bleaching agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a liquid bleaching agent composition with bleaching ability which does not deteriorate during the preservation for a long period of time. SOLUTION: This bleaching agent composition contains 0.1-10 wt.% of hydrogen peroxide, 0.5-50 wt.% of a nonionic surfactant and 0.2-2 wt.% of a phosphonic acid type sequestering agent, wherein the ratio between hydrogen peroxide and the sequestering agent is represented by the formula: the phosphonic acid type sequestering agent/hydrogen peroxide >0.03 and the content of acetic acid or an acetate in the phosphonic acid type sequestering agent is 5 wt.% or less. Hydrogen peroxide is stable enough to maintain the original bleaching power of the composition when produced for a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid bleaching composition having excellent stability and capable of maintaining the initial bleaching power without change for a long time.

[0002]

2. Description of the Related Art Bleaching agents are classified into chlorine bleaching agents and oxygen bleaching agents. Chlorine bleaching agents are limited in the types of fibers that can be used. Oxygen bleaching agents which do not have these drawbacks have been widely used recently. Among these oxygen bleaching agents, sodium percarbonate and sodium perborate are used as powdered oxygen bleaching agents, and hydrogen peroxide is used as a liquid oxygen bleaching agent. Liquid oxygen bleaching agents are preferred.

[0003] In this liquid bleach, the stability of hydrogen peroxide used as a bleaching active species is poor, and oxygen gas is generated during storage. In order to prevent this, a stabilizer for hydrogen peroxide has been incorporated into the liquid bleach composition. For example, JP-A-58-38800 discloses a liquid detergent using EDTA or amino (methylphosphonic acid) as a stabilizer, and JP-A-2-227498 discloses a specific amino (methylphosphonic acid). Is used. Such stabilizers can improve the stability and increase the bleaching effect by increasing the blending amount in the liquid bleaching agent composition, and particularly the phosphonic acid-based sequestering agent is bleaching. The effect can be greatly improved.

[0004]

As described above, the phosphonic acid sequestering agent is an excellent compounding agent for the liquid bleaching agent, but the bleaching effect is increased when the mixing ratio of the phosphonic acid sequestering agent to hydrogen peroxide is increased. However, depending on the quality of the phosphonic acid sequestering agent, mainly the content of acetic acid, there is a problem that the stability is remarkably reduced.

[0005] Phosphonic acid-based sequestering agents are usually produced by reacting phosphorous acid with glacial acetic acid, ammonia and the like, but unreacted acetic acid remains in this production process. It is difficult to completely remove this acetic acid even by purification, and it is generally unavoidable that several to ten and several percent of acetic acid remains. Although it is possible to further reduce the amount of acetic acid by performing further purification, it is necessary to apply a method such as steam distillation and the like, and this method cannot be said to be economical. Therefore, when a phosphonic acid-based sequestering agent is blended with a liquid bleaching agent, the fact is that the one mixed with acetic acid must be used as it is. However, if such a phosphonic acid-based sequestering agent containing acetic acid is blended into a liquid bleaching agent, as described above, depending on the amount of acetic acid mixed, the stability is significantly lowered, and the product becomes defective. Become.

Accordingly, the present invention provides a liquid bleaching composition capable of maintaining excellent bleaching power for a long period of time by fully exerting the stabilizing action and the bleaching power improving action of the phosphonic acid sequestering agent without being impaired. The purpose is to provide things.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, in a bleach containing hydrogen peroxide, an effect of improving the stability and bleaching power of a phosphonic acid-based sequestering agent. Have been found, and on the other hand, a compounding relationship has been found which does not cause the effect of inhibiting the stability of acetic acid contained in the phosphonic acid-based sequestering agent, thereby completing the present invention.

That is, the present invention relates to a method for producing hydrogen peroxide of 0.1 to 10
% By weight, 0.5 to 50% by weight of a nonionic surfactant and 0.2 to 2% by weight of a phosphonic acid sequestering agent. The following formula: phosphonic acid sequestering agent / hydrogen peroxide> 0.
03, wherein the content of acetic acid or acetate in the phosphonic acid sequestering agent is 5% by weight or less based on the effective component. Things.

In the content of acetic acid or acetate in the phosphonic acid sequestering agent, “with respect to the effective component” means
The remainder excluding acetic acid or acetate contained in the phosphonic acid sequestering agent, that is, only the phosphonic acid sequestering agent is regarded as an "effective component", and means the ratio of acetic acid or acetate to the "effective component". Is what you do. Therefore, when the “effective component” is 100 g and the amount of acetic acid or acetate is 5 g, the content is 5% by weight.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The content of hydrogen peroxide in the liquid bleach composition of the present invention is from 0.1 to 10 in order to prevent blistering of the container during storage and to obtain a sufficient bleaching effect.
%, Preferably 0.5 to 6% by weight, particularly preferably 1 to 6% by weight.

The nonionic surfactant used in the present invention is a method described by Davis in order to prevent the nonionic surfactant from oozing out of the container and sticking the container or causing the container to swell. HLB obtained in
4.5 to 10 are preferred. Examples of such a nonionic surfactant include compounds represented by the following general formula.

[0012]

## STR2 ## ^{_{R 3 - (OC 2 H 4}} ) in _n -OH [wherein, R ³ may be substituted by an alkyl group or alkenyl group or an alkyl group having 1 to 12 carbon atoms having 6 to 18 carbon atoms N represents an aryl group, and n represents a number selected so that the HLB obtained by the method of Davis is 4.5 to 10. ].

Specific examples of such a nonionic surfactant include the following compounds. _{C 10 H 21 (OC 2 H} 4) n -OH n = 2~17, HLB = 4.81~9.76 C 12 H 25 (OC 2 H 4) n -OH n = 4~20, HLB = 4.52~9.80 C 14 H ₂₉ (OC ₂ H ₄ ) _n -OH n = 7 to 23, HLB = 4.56 to 9.84 C ₁₆ H ₃₃ (OC ₂ H ₄ ) _n -OH n = 10 to 26, HLB = 4.60 to 9.88 C ₁₈ H _{37 (OC 2 H 4) n -OH} n = 13~29, HLB = 4.64~9.92.

The content of the nonionic surfactant in the liquid bleaching composition of the present invention is preferably 0.5 to maintain an appropriate viscosity to facilitate use and to obtain a sufficient detergency.
-50% by weight, preferably 1-30% by weight.

The phosphonic acid sequestering agents used in the present invention include aminotri (methylenephosphonic acid), 1-hydroxyethylidene-1,1-disulfonic acid, ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid). ) Or salts thereof. Among them, aminotri (methylenephosphonic acid), 1-hydroxyethylidene-1,1
-Disulfonic acids or salts thereof are preferred.

[0016] The content of the phosphonic acid sequestering agent in the liquid bleaching composition of the present invention is determined so as to obtain a sufficient bleaching effect without deteriorating the stability of hydrogen peroxide.
It is 0.2 to 2% by weight, preferably 0.2 to 1.5% by weight, particularly preferably 0.5 to 1.5% by weight.

In the liquid bleach composition of the present invention, the mixing ratio of hydrogen peroxide and phosphonic acid sequestering agent is expressed by the following formula: phosphonic acid sequestering agent / hydrogen peroxide> 0.03. The relationship is preferably phosphonic acid sequestering agent / hydrogen peroxide> 0.03-1, and particularly preferably phosphonic acid sequestering agent / hydrogen peroxide> 0.04-0. .1. In the liquid bleach composition of the present invention, the content of acetic acid or acetate in the phosphonic acid sequestering agent to be used is 5% by weight or less, preferably 1% by weight, while satisfying the above relations. Or less, particularly preferably 0.5% by weight or less. By satisfying such conditions, both the stability and the bleaching power of the liquid bleach composition can be maintained.

In the present invention, in order to improve the bleaching power, a bleaching activator represented by the general formula (I) or (II) can be blended in addition to the above components.

[0019]

Embedded image

Wherein M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom, and R ¹ and R ² represent an alkyl or alkenyl group having 7 to 18 carbon atoms or an alkyl group having 1 to 12 carbon atoms. Represents an aryl group which may be substituted. ].

Among the bleaching activators represented by the general formula (I) or (II), sodium dodecanoyloxybenzenesulfonate, decanoyloxybenzoic acid, octanoyloxybenzoic acid, nonanoyloxybenzoic acid,
3,5,5-Trimethylhexanoyloxybenzoic acid is preferred. The amount of such a bleach activator is preferably 0.03% in the liquid bleach composition in order to prevent precipitation or increase in viscosity and to enhance the bleaching effect.
The content is 1 to 10% by weight, particularly preferably 0.1 to 5% by weight, and further preferably 0.1 to 3% by weight.

In the present invention, if desired, one or more selected from anionic surfactants, amphoteric surfactants and cationic surfactants can be added. As anionic surfactants, alkyl benzene sulfonates,
Alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylate salts, α-sulfo fatty acid salts, α-sulfo fatty acid esters And the like. Examples of the amphoteric surfactant include amine oxides, sulfobetaines, and carbobetaines. Examples of the cationic surfactants include quaternary ammonium salts. Of these, alkyl benzene sulfonates (C ₁₀ -C
₂₀ ), alkyl or alkenyl sulfates (C ₁₀ -C
₂₀ ), alkyl or alkenyl ether sulfates (C ₁₀
-C _20), at least one quaternary ammonium salt having an alkyl group of carbon number C ₁₀ -C ₂₀ are particularly preferred.
The amount of these surfactants is preferably 0.1 to 5
0% by weight, particularly preferably 0.5 to 30% by weight,
More preferably, it is 0.5 to 20% by weight.

In the liquid bleaching composition of the present invention, one or more selected from aldehyde component and ester component can be blended as a flavor component. As the aldehyde component, Lilyal (4-tert-
Butyl-α-methylhydrocinnamic aldehyde),
Florarozone (2-methyl-3- (p-methoxyphenyl) -propanol), aldehyde C-111 len (10-undecene-1 ol), rigstral (2,4-dimethyl-3-cyclohexenylcarboxaldehyde), bougeonal ( 3- (p-tert-butyl-phenyl) -propanol), helional (2-methyl-3- (3,4
-Methylene-dioxy-phenyl) -propanol),
Cuminaldehyde (4-isoproylbenzaldehyde), cyclamenaldehyde (2-methyl-3- (4-
Isopropylphenyl) -propanol), benzaldehyde and hexylcinnamic aldehyde (α-methylhydrocinnamic aldehyde). The ester component, tricyclodecenyl acetate (hexahydro-4,7 - Metanoinden -5 (or 6) - yl acetate), Furuiteto (ethyl tricyclo [5,2,1,0 ^2.0] decane-2-yl Carboxylate), benzyl salicylate, pt-butylcyclohexyl acetate, hedione (methyl (3-oxo-
2-pentylcyclopentyl) acetate), allyl amyl glycolate (allyl 2-pentyloxyglycolate), allyl cyclohexanepropionate, ot
-Butylcyclohexyl acetate, terpinyl acetate, phenylethyl iso-butyrate, phenylethyl acetate, phenylethyl formate, phenylethylphenylacetate, n-bornyl acetate and the like. The content of the fragrance component in the liquid bleach composition of the present invention is preferably 0.01 to 1% by weight, particularly preferably 0.1 to 0.5% by weight, in order to impart a sufficient scent. It is.

In the present invention, if desired, a sequestering agent other than the phosphonic acid sequestering agent can be further blended. As the sequestering agent, acetic acid, propionic acid, butanoic acid, hexanoic acid, octanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, glycolic acid, lactic acid, succinic acid, citric acid, fumaric acid, Organic carboxylic acids such as benzoic acid, salicylic acid, phthalic acid, terephthalic acid, and trimet acid; percarboxylic acids such as dodecane diperacid, monoperphthalanolic acid; and unsaturated carboxylic acids such as acrylic acid, methacrylic acid, and maleic acid. Polycarboxylic acids such as homopolymers or copolymers; organic sulfones such as alkyl sulfate, alkyl ether sulfate, α-sulfofatty acid, α-sulfofatty acid ester, alkylbenzenesulfonic acid, p-toluenesulfonic acid, p-hydroxysulfonic acid, etc. Acids and organic sulfates; sulfuric acid Inorganic acids such as acid, phosphoric acid, hydrochloric acid, polyphosphoric acid, nitric acid and silicic acid can be mentioned. The compounding amount of these sequestering agents is preferably 0.01 to 5% by weight.

The liquid bleach composition of the present invention has a pH of 1. 1 with an acid or an alkali in order to enhance the stability of the composition.
It is preferable to adjust so as to be 5 to 5.

In the liquid bleaching composition of the present invention, since hydrogen peroxide as a bleaching component is unstable to light, it is stored in a dark place or stored in a light-shielding container when stored after production. Fill and save. In the case of shipment as a product, it is filled in a light-shielding container and shipped. As such a light-shielding container, for example, a plastic container having a thickness of 20 to 500 μm and a light transmittance of 200 to 800 nm of 30% or less can be mentioned.

[0027]

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

Examples 1 to 5 and Comparative Examples 1 to 5 Hydrogen peroxide, nonionic surfactants of b-1 and b-2,
c-1 and c-2 phosphonic acid sequestering agents, d-1
Using the bleach activator d-3 and the surfactants e-1 and e-2, the liquid bleach compositions of the present invention shown in Table 1 were obtained. These compositions were adjusted to pH = 2.5 with 0.1N sulfuric acid or 0.1N sodium hydroxide.

The liquid bleach compositions shown in Table 1 (indicated by weight%) were stored under the storage conditions shown in Table 1, and the stability and bleaching performance of the following hydrogen peroxide were evaluated. Table 1 shows the results. As comparative examples, c′-1 and c′-
A liquid bleach composition was similarly prepared using the two components. The results are shown in Table 1.

B-1: C ₁₂ H ₂₅ (C ₂ H ₄ ) ₈ -OH (HLB = 5.85) b-2: C ₁₂ H ₂₅ (C ₂ H ₄ ) ₂₀ -OH (HLB = 9.80) c-1 : 1-Hydroxyethylidene-1,1-disulfonic acid (acetic acid content 0.2% by weight vs. effective component) c-2: Aminotri (methylene phosphonic acid) (acetic acid content 1.5% by weight vs. effective component) c ′ -1: 1-hydroxyethylidene-1,1-disulfonic acid (acetic acid content: 5.4% by weight relative to active ingredient) c'-2: aminotri (methylene phosphonic acid) (acetic acid content: 8.2% by weight relative to active ingredient) )

[0031]

Embedded image

E-1: Alkylbenzenesulfonic acid (C12 _, Perex F25 manufactured by Kao Corporation) e-2: N-ethyl-N, N-dimethyl-N-tetradecylammonium ethyl sulfate.

(Stability of hydrogen peroxide) Before storage and at 40 ° C.
, The liquid bleach composition after storage for 3 months was titrated with a 0.1 N potassium permanganate solution, the effective oxygen concentration was calculated by the following formula, and the stability of hydrogen peroxide was evaluated.

[0034]

(Equation 1)

(Bleaching Performance) First, a black tea-stained cloth to be used in the test was prepared by the following method. 80 g of Nitto black tea (yellow package) was boiled with 3 liters of ion-exchanged water for about 15 minutes, and rubbed with desizing bleached cotton. Next, cotton gold cloth # 2003 was immersed in this liquid and boiled for about 15 minutes. Remove from the fire as it is, leave it for about 2 hours, wash with water until the washing liquid does not color, and after dehydration and pressing, 10 × 1
It was cut to 0 cm to obtain a black tea-contaminated cloth for testing.

The test was performed by the following method. First, 40 ml of the liquid bleaching composition shown in Table 1 was dissolved in 2 liters of a 0.067% aqueous detergent solution (using a commercially available detergent), and the black tea-stained cloths were immersed in five pieces for 30 minutes. Next, after thoroughly rinsing with tap water, drying was performed, and the bleaching rate was calculated from the following equation, and the bleaching performance was evaluated. The reflectance was measured using a NDR-101DP 460 nm filter manufactured by Nippon Denshoku Industries Co., Ltd.

[0037]

(Equation 2)

[0038]

[Table 1]

As is clear from Table 1, the liquid bleaching compositions of Examples 1 to 5 exhibited the effect of the phosphonic acid-based sequestering agent and the unfavorable effect of acetic acid. Also showed excellent stability and bleaching performance. In contrast, in the compositions of Comparative Examples 1 to 3 using the phosphonic acid-based sequestering agent having an acetic acid content exceeding 5% by weight, the adverse effect of acetic acid exceeded the effect of the phosphonic acid-based sequestering agent. As a result, both the stability and the bleaching property were inferior, and the product was poor. Further, although the same phosphonic acid-based sequestering agent was used as in the examples, the mixing ratio with respect to hydrogen peroxide was out of the range specified in the present invention.
That is, Comparative Examples 4 and 5, in which the amount of the sequestering agent was small, had good stability but had significantly poor bleaching performance, and were also poor as products.

[0040]

EFFECT OF THE INVENTION The liquid bleaching composition of the present invention sufficiently exerts the effect of improving the stability and bleaching power of the phosphonic acid sequestering agent and the effect of inhibiting the stabilization of acetic acid contained in the sequestering agent. , The bleaching performance at the beginning of production can be maintained for a long period of time.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 3:34) (72) Inventor Muneo Aoyagi 1334 Minato, Wakayama-shi, Wakayama Pref.

Claims (5)

[Claims] 1. A composition comprising 0.1 to 10% by weight of hydrogen peroxide, 0.5 to 50% by weight of a nonionic surfactant and 0.2 to 2% by weight of a phosphonic acid sequestering agent. The mixing ratio of hydrogen and the phosphonic acid sequestering agent has a relationship represented by the following formula: phosphonic acid sequestering agent / hydrogen peroxide> 0.03, and acetic acid or acetic acid in the phosphonic acid sequestering agent A liquid bleach composition, wherein the content of the salt is 5% by weight or less based on the effective component. 2. The liquid bleach composition according to claim 1, wherein the content of acetic acid or acetate in the phosphonic acid sequestering agent is 1% by weight or less based on the effective amount. 3. The method according to claim 1, wherein the phosphonic acid sequestering agent is aminotri (methylenephosphonic acid), 1-hydroxyethylidene-
3. The composition according to claim 1, which is 1,1-disulfonic acid, ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid) or a salt thereof.
A liquid bleach composition as described in any one of the preceding claims. 4. The liquid bleaching composition according to claim 1, further comprising a bleaching activator represented by the general formula (I) or (II). Embedded image [In the formula, M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom, and R ¹ and R ² are substituted with an alkyl group or alkenyl group having 7 to 18 carbon atoms or an alkyl group having 1 to 12 carbon atoms. Represents an optionally substituted aryl group. ] 5. The liquid bleaching composition according to claim 1, further comprising at least one selected from an anionic surfactant, an amphoteric surfactant and a cationic surfactant.