JPS621792A - Bleaching composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel bleach composition, more particularly containing hydrogen peroxide or a peroxide that produces hydrogen peroxide in an aqueous solution, and a sorbitan fatty acid ester. The present invention relates to a bleach composition characterized by:

[Conventional technology]

In general, hydrogen peroxide used in clothing bleaches or peroxides that generate hydrogen peroxide in an aqueous solution can exhibit a high bleaching effect at high temperatures, but as the temperature decreases, the bleaching effect becomes more pronounced. Reduce effectiveness. Also, it is effective when the entire clothing is soaked for a relatively long time, as is the case with clothing, but when a bleach solution is sprinkled on the surface, such as when bleaching a solid surface, the solution The drawback was that it dripped or soaked into the surface, making it almost ineffective.

[Means for solving problems]

As a result of intensive research to overcome these drawbacks, the present inventors discovered that hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution has not been previously used for such purposes. The present invention was completed by discovering that these drawbacks could be solved by combining sorbitan fatty acid esters.

That is, the present invention provides a novel bleach composition characterized by containing hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution and sorbitan fatty acid ester.

Peroxides that generate hydrogen peroxide in an aqueous solution used in the present invention include organic and inorganic hydrogen peroxide adducts such as sodium carbonate/hydrogen peroxide adduct, sodium tripolyphosphate/hydrogen peroxide adduct, Sodium pyrophosphate
Hydrogen peroxide adduct, urea/hydrogen peroxide adduct, or 4
NazSOa 4211z (h 2 .NaCl double salt, etc.) are exemplified.

Further, there are inorganic peroxides such as sodium perborate hydrate, sodium perborate tetrahydrate, sodium peroxide, and calcium peroxide. Among these, especially sodium carbonate/hydrogen peroxide adduct, 4NazSO4・2H2O2・Na
Cl double salt, sodium perborate hydrate, and sodium perborate tetrahydrate are preferred. These can be used alone or in combination of two or more.

The amount of hydrogen peroxide or organic or inorganic peroxide that generates hydrogen peroxide in an aqueous solution in the bleach composition is 0.5 to
It is preferably 95% (% is weight %, the same applies hereinafter), more preferably 5 to 90%, particularly preferably 30 to 90%.

Next, sorbitan fatty acid ester, which is the second component of the present invention, will be explained. Sorbitan fatty acid ester is generally known as an emulsifier for cosmetics, but it is not known at all that it has the effect of increasing the effectiveness of bleaching agents. Furthermore, esters of higher fatty acids are generally said not to have such effects. In the present invention, any sorbitan fatty acid ester can be used, but mono-, di-, and triesters of saturated fatty acids having 8 to 20 carbon atoms are preferred, and triesters of saturated fatty acids having 8 to 20 carbon atoms are more preferred. . Preferably, lauric acid,
Oleic acid, stearic acid, palmitic acid mono-, di-,
Examples include triesters. These can be used alone or in combination of two or more.

The amount of these sorbitan fatty acid esters in the composition is preferably 0.5 to 50%, more preferably 1 to 25%.
It is. Concentration in solution during use is 0.1-10%
is preferable, and more preferably 0.2 to 5%.

The effect of the bleach composition of the present invention can be further enhanced by adding a buffer for adjusting the pH.

These buffers include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, ammonium hydroxide or amine derivatives such as mono-, di-, and triethanolamine, and alkali metal carbonates such as sodium carbonate and potassium carbonate. salts, ammonium carbonate, etc., alkali metal orthophosphates such as sodium orthophosphate, potassium orthophosphate, orthophosphates such as ammonium orthophosphate,
Alkali metal silicates such as sodium silicate and potassium silicate, silicates such as ammonium silicate, and the like can be used.

The pH buffer may be used in an amount that adjusts the pH to provide the optimum effect depending on the type of peroxide used.

The compositions of the present invention can also be used in combination with conventional activators. Activators that can be used include:
Nitriles such as acetonitrile, malononitrile, phthalonitrile, benzoyliminodiacetonitrile, glucose pentaacetate, octaacetyl sucrose, triacetin, sorbitol hexaacetate, acetoxyhenzenesulfonate, or triacetyl cyanuric acid, methyl chloroformate O-acetylated product, N, N, N', N'-tetraacetylethylenediamine or tetraacetylglycoluril, N-benzoylimidazole, di-N-acetyldimethylglyoxime, 1-phenyl-3-acetylhydantoin, N
, N-acylated products such as N-diacetylaniline, N-acetyldiglykolimide, diacetylmethylene diformamide, and phthalic anhydride, succinic anhydride, benzoic anhydride, glutaric anhydride, alkyl sulfuric anhydride, carboxylic acid and Acid anhydrides, such as anhydrides of organic sulfonic acids,
sulfonyloximes such as dimethylglyoxime (methanesulfonyl), acylated phosphates such as di-ethylbenzoyl phosphate, phenylsulfonate esters, organophosphoric azides such as diphenylphosphinic azide,
Disulfones such as diphenyldisulfone, other N-
Examples include sulfonylimidazole, cyanamide, and halogenated triazine. These activators can be used alone or in combination of two or more.

The amount of the activator used is preferably 5% to 70%, preferably 10% to 50%, based on the composition.

Furthermore, the composition of the present invention may optionally contain sodium chloride,
Alkali metals such as potassium chloride, lithium chloride, ammonium chloride, sodium bromide, potassium bromide, lithium bromide, ammonium bromide, or ammonium balogenides, alkali metal sulfates such as sodium sulfate, potassium sulfate, lithium sulfate, or alkali metal bicarbonates such as ammonium sulfate, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, ammonium bicarbonate,
Alkali metal salts of pyrophosphate such as sodium pyrophosphate, potassium pyrophosphate, lithium pyrophosphate, ammonium pyrophosphate, sodium tripolyphosphate, potassium tripolyphosphate, alkali metal salts of tripolyphosphate such as lithium tripolyphosphate, ammonium tripolyphosphate, etc. Condensed alkali metal phosphates such as alkali metal phosphates or ammonium salts can be blended.

An activator such as an anionic activator, a nonionic activator, a cationic activator, or a zwitterion activator can be added to the composition of the present invention, if necessary.

Examples of anionic activators include sulfate ester salts of higher alcohols having 10 to 22 carbon atoms, carboxylic acid salts having 10 to 22 carbon atoms, α-olefin sulfonates having 10 to 22 carbon atoms, and alkyl groups having 10 to 22 carbon atoms. alkylbenzene sulfonate having 10 to 22 carbon atoms, alkyl sulfosuccinate having an alkyl group having 8 to 22 carbon atoms, ethylene oxide adduct of higher alcohol having 10 to 22 carbon atoms (number of moles added: 1-1
Examples include sulfuric esters of 00) and sulfuric esters of alkylphenol polyethylene glycol ethers having an alkyl group having 8 to 22 carbon atoms.

Examples of nonionic activators include higher alcohols with linear or branched chains having 10 to 22 carbon atoms, polyethylene glycol ether (degree of polymerization: 3 to 100), and ethylene glycol ether having 1 carbon number.
Poly of 0 to 22 carboxylic acids (degree of polymerization: 3 to 100)
Ethylene glycol ester, alkylphenol poly with an alkyl group having 8 to 22 carbon atoms (degree of polymerization = 3 to
100) Examples include ethylene glycol ether.

If necessary, p-) Solubilizing agents such as sodium luenesulfonate, sodium xylene sulfonate, and urea; abrasives such as aluminum silicate such as montmorillonite; magnesium silicate such as seviolite and attapulgite; calcium carbonate; and abrasives such as silicon dioxide; Amorphous silica, pigments, dyes, fragrances, etc. can be added.

When using the bleaching agent of the present invention, the concentration should be 0.
．． It is preferable to dilute it to 5-50%, preferably 1-30%. Especially when used on solid surfaces,
It is preferable to add the composition to water to form a solution, slurry, or paste, and immediately sprinkle or spray the composition onto the target surface. To give a more specific example, in use, the effective oxygen concentration is preferably 0.1 to 10%, more preferably 0.2 to 6%, and preferably 8 to 13. , more preferably 9 to 12.

〔Effect of the invention〕

The bleach composition according to the present invention exhibits sufficient bleaching power even on solid surfaces and is particularly effective even at low temperatures, so it can be used not only as a bleaching agent for clothing, but also as a mold remover, a water pipe cleaner, Can be used as toilet cleaner, ventilation fan cleaner, etc.

〔Example〕

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

Example 1 A tea-stained cloth was immersed in a composition obtained by adjusting the formulation shown in Table 1, and the bleaching rate was measured after 30 minutes. The pH in both cases was adjusted to 10.0 with NaOH.

Table 1 [Note] *lPB Sodium perborate-hydrate book 2
P S 4NazSO4・2HzOz・NaCl(
Nippon Peroxide) *3 B is balance (total 10
Reflectance of white cloth - Reflectance before bleaching Example 2 A composition having the formulation shown in Table 2 was prepared, a mold plate was immersed in it, and the mold removal rate was measured after 15 minutes. It was measured.

The pH in both cases was adjusted to 12.0 &: with Na0II. The results are shown in Table 2.

Mold removal rate: The mold removal rate is based on Aspergillus niger (Aspergillus niger).
A model mold plate was made of an unglazed plate that had been inoculated with C. illus Nigar and incubated at 30°C for 7 days. It was calculated by calculating 81 using the formula.

(a formula) %formula% RO is the reflectance of the unglazed board before mold inoculation R5 is the reflection weight of the mold plate before treatment. The job is the reflectance of the mold plate after treatment. Measuring model name: NDR-101DP color difference meter manufactured by Nippon Denshoku Industries Co., Ltd. Table 2 Gi

Claims (1)

[Scope of Claims] 1. A bleach composition characterized by containing hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution and sorbitan fatty acid ester. 2 The peroxide that generates hydrogen peroxide in aqueous solution is sodium carbonate/hydrogen peroxide adduct, 4Na_2SO_4.
The bleach composition according to claim 1, which is one or more selected from the group consisting of 2H_2O_2.NaCl double salt, sodium perborate monohydrate, and sodium perborate tetrahydrate. 3. The bleach composition according to claim 1, wherein the sorbitan fatty acid ester is a mono-, di-, or triester of sorbitan saturated fatty acid having 8 to 20 carbon atoms. 4 The sorbitan fatty acid ester is one or two selected from the group consisting of mono-, di-, and triesters of lauric acid, oleic acid, stearic acid, and palmitic acid of sorbitan.
2. The bleach composition according to claim 1, wherein the bleach composition is of at least one species.