JPS621795A - 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 anhydrous saturated fatty acids. 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. In addition, it is effective when the whole garment is soaked for a relatively long time, such as when used for clothing, but when a bleach solution is sprinkled on the surface, such as when bleaching a solid surface, it is effective. However, the disadvantage is that the solution drips or soaks into the surface, limiting the amount of time the solution can be in contact with the solution, 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 overcome by combining specific anhydrous saturated fatty acids.

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 an anhydrous saturated fatty acid having 8 to 18 carbon atoms.

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 birophosphate
Hydrogen peroxide adduct, urea/hydrogen peroxide adduct, or 4
Examples include NazSO4H2H2O2.NaCl double salt.

In addition, there are inorganic peroxides such as sodium perborate hydrate, sodium perborate tetrahydrate, sodium peroxide, and peroxide. Among these, especially sodium carbonate,
Hydrogen peroxide adduct, 4Na2So4・2 HzOz'
NaCl double salt, sodium perborate hydrate, and sodium perborate tetrahydrate are preferred. These are 1 type or 2
More than one species can be used in combination.

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, as the anhydrous saturated fatty acid which is the second component of the present invention,
Any saturated fatty acid anhydride having 8 to 18 carbon atoms can be used, but preferably lauric anhydride, palmitic anhydride,
These are stearic anhydride and myristic anhydride. These fatty acids can be used alone or in combination of two or more. The amount of these anhydrous saturated fatty acids in the composition is preferably 0.5 to 50%, more preferably 1 to 25%.
%. The concentration in the solution during use is 0.1-10
%, preferably 0.2 to 5%. These anhydrous saturated fatty acids can significantly enhance the effectiveness of peroxides, especially in applications where available oxygen concentrations are high.

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 is adjusted to a pl+ that provides 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-1-,
Acetoxybenzenesulfonate or O-acetylated products such as triacetyl cyanuric acid, methyl chloroformate, N,N,N',N'-tetraacetylethylenediamine or tetraacetylglycoluril, N-benzoylimidazole, di -N-acetyldimethylglyoxime, 1-phenyl-3-acetylhydantoin,
N- such as N,N-diacetylaniline, N-acetyldiglykolimide, diacetylmethylene diformamide
acylated and acid anhydrides such as phthalic anhydride, succinic anhydride, benzoic anhydride, glutaric anhydride, alkyl sulfuric anhydrides, anhydrides of carboxylic and organic sulfonic acids, di(methanesulfonyl)dimethylglyoxime. sulfonyloximes such as, acylated phosphates such as di-ethylhendyl phosphate, phenylsulfonate esters, organophosphoric acid azides such as diphenylphosphinine quazide, disulfones such as diphenyldisulfone, and other N
-Sulfonylimidazole, cyanamide, halogenated triazine, etc. are exemplified. 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 alkali metal sulfates such as Th halogenated ammonium, sodium sulfate, potassium sulfate, and lithium sulfate. , or alkali metal bicarbonates such as ammonium sulfate, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, alkali metal pyrophosphate salts such as ammonium bicarbonate, sodium pyrophosphate, potassium pyrophosphate, lithium pyrophosphate, ammonium pyrophosphate. , alkali metal salts of tripolyphosphate such as sodium tripolyphosphate, potassium tripolyphosphate, and lithium tripolyphosphate, alkali metal condensed phosphates such as ammonium tripolyphosphate, or ammonium salts.

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 having an alkyl group having 8 to 22 carbon atoms (degree of polymerization = 3 to 1)
00) Ethylene glycol ether etc. can be exemplified.

In addition, if necessary, solubilizing agents such as sodium p-toluenesulfonate, sodium xylene sulfonate, urea, aluminum silicate such as montmorillonite, magnesium silicate such as sepiolite, acupurgite, calcium carbonate, polishing such as silicon dioxide, etc. agent, 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%.
l is preferably 8-13, more preferably 9-12.

〔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.

(Lt1 bottle IPB sodium perborate-hydrate book 2
PS 4NazS04'211zOz'NaC
+ (Nippon Peroxide) Book 3 B is an abbreviation for balance (amount that takes the total as 100) Example 2 A composition having the formulation shown in Table 2 was prepared, a mold plate was immersed in it, and after 15 minutes The mold removal rate was measured.

The pH in both cases was adjusted to 12.0 with NaOH. 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 A. I calculated and found it.

(Calculation formula) % formula % l1lO is the reflectance of the unglazed plate before mold inoculation RS is the reflectance meter of the mold plate before treatment Measures the reflectance of the mold plate after treatment Model name: Manufactured by Nippon Denshoku Industries Co., Ltd. NDR401DP color difference meter Table 2

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 an anhydrous saturated fatty acid having 8 to 18 carbon atoms. 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 saturated fatty acid anhydride is one or more selected from the group consisting of lauric anhydride, palmitic anhydride, myristic anhydride, and stearic anhydride.