JPS627797A - 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 [Industrial Application Field] The present invention relates to a novel bleaching agent composition, and more particularly, peroxymonosulfate and phthalic acid, isophthalic acid, terephthalic acid, phthalic acid derivatives, or their derivatives. The present invention relates to a bleach composition characterized by containing a salt.

[Conventional technology and problems]

In general, peroxides used in bleaching agents for clothing can exhibit a high bleaching effect at high temperatures, but their effectiveness decreases significantly as the temperature decreases. For this reason, a patent has been disclosed for using peroxymonosulfate for clothing, which is effective even at low temperatures, but it is effective when the entire clothing is soaked for a relatively long period of time, as in the case of use for clothing. However, when a crude solution of bleach is sprayed onto the surface, such as when bleaching a solid surface, the problem is that the solution drips or soaks into the surface, making it almost ineffective.

The present inventors invented a bleach containing peroxymonosulfate that is effective in bleaching such solid surfaces, but as a result of a detailed study of actual stains, we found that stains in bathrooms and other areas that are not often cleaned, It has been found that some mold stains that are particularly difficult to remove cannot be completely removed.

[Means for solving problems]

Therefore, the inventors of the present invention conducted extensive research to further enhance the effects, and found that these drawbacks could be overcome by combining peroxymonosulfate with phthalic acid, isophthalic acid, terephthalic acid, phthalic acid derivatives, or their salts. The present invention was completed after discovering a solution to the problem.

That is, the present invention provides a novel bleach composition characterized by containing (a) peroxymonosulfate and (b) phthalic acid, isophthalic acid, terephthalic acid, a phthalic acid derivative, or a salt thereof. do.

Examples of the peroxymonosulfate used in the present invention include sodium peroxysulfate, potassium peroxysulfate, and ammonium peroxysulfate, among which potassium peroxysulfate is most preferred. Generally, potassium peroxy-sulfate is KHSO5:KHSO4,:
It is commercially available in the form of a double salt of 2SO4 = 2: 1:1 (theoretical effective oxygen concentration 5.2%, commercial product approximately 4.7%).
.

The amount of peroxymonosulfate in the composition is 1 to 95% (
% is weight % (the same applies hereinafter), and more preferably 5
-90%, particularly preferably 30-90%.

Next, the phthalic acid, isophthalic acid, terephthalic acid, phthalic acid derivatives, or salts thereof used in the present invention include phthalic acid, isophthalic acid, terephthalic acid, nitrophthalic acid,
Examples include chlorophthalic acid, sulfophthalic acid, tetrahydrophthalic acid, hydroxyphthalic acid, or their salts, but according to research by the present inventors, it has been found that the effects increase in the order of phthalic acid, isophthalic acid, and terephthalic acid. It was done. The amount of phthalic acid, isophthalic acid, terephthalic acid, phthalic acid derivatives, or salts thereof in the composition is 0.5 to
It is preferably 50%, more preferably 1 to 25%.

The concentration in the solution during use is preferably 0.1 to 10
%, more preferably 0.2 to 5%.

These compounds can significantly increase the effectiveness of peroxides, especially in applications where the available oxygen concentration is high (0.2% or more).

In the present invention, the performance of the bleach composition can be further improved by incorporating synthetic amorphous silica produced by a dry method such as a heating method or a combustion method. Generally, there are two main types of substances called "silica" and represented by the chemical formula SiO□. One is naturally occurring "crystalline silica," which has a certain crystal structure like quartz, and the other is called hydrated silicic acid, wet silica, synthetic silicic acid, etc., and has a 5i-0 network. It is “amorphous” or “amorphous silica” that does not have a fixed crystal structure.

In the present invention, among synthetic amorphous silica produced by a dry method, an airgel method, a wet method, etc., or natural amorphous silica,
Amorphous silica manufactured by a dry method such as a heating method or a combustion method is used. Amorphous silica produced by other methods or natural amorphous silica is not preferred because it has little effect on improving performance. The amorphous silica produced by the dry method used in the present invention preferably has a specific surface area of 10 to 700 (m''/g) by the BET method and an average particle size of 30 μm or less.

Furthermore, primary particles may aggregate to form secondary particles, but these may also be used in the present invention without any problem. The blending amount in the composition is preferably 0.1 to 50%, more preferably 0.5 to 30%.

The concentration during use is preferably 0.1 to 30%, and 1 to 30%.
20% is more preferred.

The effect of the bleach composition of the present invention can be further enhanced by adding a buffer for adjusting the pH. pH is 5
-13 is good, and 6-11 is more preferable.

These buffers include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, ammonium hydroxide, amine derivatives such as mono-, di-, and triethanolamine, and alkali metal hydroxides such as sodium carbonate and potassium carbonate. Carbonates, ammonium carbonate, etc., alkali metal orthophosphates such as sodium orthophosphate, potassium orthophosphate, orthophosphates such as ammonium orthophosphate, alkali metal silicates such as sodium silicate, potassium silicate, silicates such as ammonium silicate. Salt etc. can be used.

The pHtN formulation may be used in an amount adjusted to p)l that provides the optimum effect depending on the type of peroxide used.

Furthermore, if necessary, alkali metals such as sodium chloride, potassium chloride, lithium chloride, ammonium chloride, sodium bromide, potassium bromide, lithium bromide, ammonium bromide, or ammonium halides, sodium sulfate, potassium sulfate, lithium sulfate. or alkali metal bicarbonates such as ammonium sulfate, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, ammonium bicarbonate, alkali pyrophosphates such as sodium pyrophosphate, potassium pyrophosphate, lithium pyrophosphate. Metal salts, alkali metal salts of tripolyphosphate such as ammonium pyrophosphate, sodium tripolyphosphate, potassium tripolyphosphate, and lithium tripolyphosphate, alkali metal condensed phosphates such as ammonium tripolyphosphate, or ammonium salts can be used.

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. dialkyl sulfosuccinates with carbon atoms, alkylbenzene sulfonates with 10 to 22 carbon atoms, paraffin sulfonates with 10 to 22 carbon atoms, ethylene oxide adducts of higher alcohols with 10 to 22 carbon atoms (number of moles added: 1 to 100). Examples include sulfuric esters 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 and poly(polymerization degree:
3-100) Ethylene glycol ether, carbon number 10
~22 carboxylic acid poly(polymerization degree = 3-100) ethylene glycol ester, alkylphenol poly(polymerization degree: 3-10) having an alkyl group having 8-22 carbon atoms
0) Ethylene glycol ether etc. can be exemplified.

In addition, if necessary, solubilizing agents such as sodium p-toluenesulfonate, sodium xylene sulfonate, urea, aluminum silicates such as montmorillonite, magnesium silicates such as sepiolite and attapulgite, calcium carbonate, abrasives such as 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%. It is desirable that the composition be added to water to form a solution, slurry, or paste, and immediately sprinkled or sprayed onto the target surface. To give a more specific example, the effective oxygen concentration during use is 0.2 to 1.5.
%, more preferably 0.2% to 1.0%, pH is suitably 5 to 13,
More preferably it is 6-11.

〔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.

Mold removal rate: The mold removal rate is based on Talatosporium herbalum (Cla.
dosporium herbarum) and inoculated with 3
0℃.

A clay plate cultured for 30 days is used as a model force biplate.
This mold plate was immersed in bleach, and the reflectance before and after the treatment was measured, and calculated using the following formula.

(Calculation formula) % formula % RO is the reflectance of the unglazed plate before mold inoculation R3 is the reflectance of the mold plate before treatment RW is the reflectance measurement of the mold plate after treatment Model name NDR manufactured by Nippon Denshoku Industries Co., Ltd. -101DP Color Difference Meter Example 1 A composition having the formulation shown in Table 1 was prepared, a mold plate was immersed in it, and the mold removal rate was measured after 15 minutes.

In both cases, the pH was adjusted to 7.0 with NaOH. The results are shown in Table 1.

Table 1 (ib *t oxoNE, peroxy-potassium sulfate double salt (Du Pont l * 2B is an abbreviation for balance (amount set to 100) Example 2 A composition having the formulation shown in Table 2 was prepared, After using the Spray 30 device on mold stains in an actual bathroom that had not been cleaned for about 6 months, the mold removal ability was sensually evaluated.

In Comparative Example 3, mold remained. Inventions 4 and 5 were quite white (although some brown mold remained that was not removed).In inventions 6 and 7, mold was completely removed.

Table 2 Ko "

Claims (1)

[Scope of Claims] 1. A bleach composition comprising (a) peroxymonosulfate and (b) phthalic acid, isophthalic acid, terephthalic acid, a phthalic acid derivative, or a salt thereof. 2. Claims No. 1 in which the phthalic acid derivative or its salt is one or more selected from the group consisting of nitrophthalic acid, chlorophthalic acid, sulfophthalic acid, tetrahydrophthalic acid, hydroxyphthalic acid, or salts thereof. Bleach composition according to item 1. 3. Contains (a) peroxymonosulfate, (b) phthalic acid, isophthalic acid, terephthalic acid, phthalic acid derivatives, or salts thereof, and (c) synthetic amorphous silica produced by a dry method. A bleach composition.