JPH03220298A - Bleaching agent composition for hard surface - 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 Field of Application] The present invention relates to an oxygen-based hard surface bleaching composition that has excellent bleaching properties and is easy to use, particularly for hard surfaces suitable for use as a mold remover. The present invention relates to a bleach composition for use.

[Prior Art and its Problems] Stains in difficult-to-clean places such as toilets, bathrooms, bathtubs, and drain pipes cannot be easily removed with ordinary detergents or bleach cleaners whose main purpose is cleaning.

To remove these stains, the bleaching action or foaming action of a composition containing a chlorine or oxygen bleach as the main stain removal component is utilized.

-For example, dark stains on bathroom ceilings, tile joints, plastic walls, and triangular corners of the kitchen can be treated with Cla.
The cause is pigments produced by molds of the genus Dosporium, which are difficult to remove with cleansers or active agents alone, so they are removed by the bleaching action of an aqueous solution of sodium hypochlorite.

However, although mold removal agents using sodium hypochlorite have excellent performance, they are highly dangerous to the eyes and skin, and have a strong characteristic chlorine odor, making them difficult to use in small bathrooms. In addition, there is the problem that toxic gases can be generated if used in conjunction with acidic detergents.

For this reason, mold removers using oxygen bleach have also been proposed.

For example, JP-A-62-100598 discloses a mold remover composition containing peroxide and colloidal silica, and JP-A-60-1299 discloses a bleaching composition containing peroxyhydrogen sulfate and inorganic peroxide. It is stated that the agent is suitable as a mold remover. The peroxides used in these publications are solids, and although it is stated that bleach activators can be used to enhance the bleach blade, such bleach activators are also solids and cannot be used with water. It takes time and effort to dissolve, making it difficult to use at home.

It is an object of the present invention to provide a bleach composition for hard surfaces that is easy to use and has an improved bleaching edge.

[Means to solve the problem]

As a result of intensive research, the inventors of the present invention found that hydrogen peroxide bleach, which uses a liquid bleach activator at room temperature, is easy to use, and that by adding a water-soluble solvent, the bleaching edge against stains on hard surfaces is further improved. This discovery led to the completion of the present invention.

That is, the present invention includes (a) hydrogen peroxide 1 to 6% by weight (b) a bleach activator that is liquid at room temperature 2 to 20% by weight (c) a water-soluble solvent 1 to 50% by weight (
d) A hard surface bleaching composition comprising the balance water and having a pH in the range of 8 to 11.5.

In the present invention, hydrogen peroxide (a) is blended in the composition in an amount of 1 to 6% by weight, preferably 1 to 4% by weight.

In addition, as a bleach activator b) that is liquid at room temperature, 3.6-
Diester of thioxahebutanoic acid and ethylene glycol, 3.6.9-) Diester of lioxadecanoic acid and ethylene glycol, diester of butoxyacetic acid and glycerin, anhydride 3.6 Dioxahebutanoic acid, anhydride 3.6
．． 9-) Lioxadecanoic acid, butoxyacetic anhydride, methoxyacetic anhydride, ethoxyacetic anhydride, methoxypropionic anhydride, monomethoxyacetic acid glycerol ester, mono- or dimethoxyacetic acid glycol ester, and the like. The bleach activator (b), which is liquid at room temperature, is contained in the composition at 2 to
It is blended in an amount of 20% by weight, preferably 5 to 15% by weight.

The water-soluble solvent (c) used in the present invention includes monohydric alcohols such as methanol, ethanol, and propatool; ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, and hexylene glycol; Dihydric alcohols include trihydric alcohols such as glycerin. Furthermore, diethylene glycol methyl ether, ethylene glycol methyl ether,
Examples include mono- or diethers of dihydric and trihydric alcohols with lower monohydric alcohols such as ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and diethylene glycol monopropyl ether. The water-soluble solvent (c) is contained in the composition in an amount of 1 to 50% by weight, preferably 1 to 50% by weight.
Contains 30% by weight. The water-soluble solvent (c) has the effect of increasing the bleaching strength and of stabilizing the foam, which is necessary when the composition of the invention is used in spray form.

The pH of the composition of the present invention is 8 to 11.5, preferably 9 to 1.
It is adjusted to a range of 0.5. Examples of alkaline agents for adjusting pit include sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, sodium phosphate, sodium birophosphate, sodium tripolyphosphate, or their potassium salts, ammonium salts, mono-, di-, or triethanolamine salts. used.

The balance of the composition of the present invention is water, but other solubilizing agents, surfactants, penetrants such as sodium p-)luenesulfonate, sodium xylene sulfonate, sodium alkenylsuccinate, urea, etc. , chelating agent,
Suspending agents such as clay, abrasives, pigments, dyes, fragrances, etc. can be added.

Since the surfactant can promote the penetration of bleaching active species into stains, it is desirable to add 0.1 to 5% by weight of the surfactant to the composition. Examples of surfactants include alkyl glycosides, polyoxyethylene alkyl ethers, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene fatty acid esters, oxyethylene oxypropylene block polymers (Pluronic), fatty acid monoglycerides, and amine oxides. nonionic surfactants such as soaps, alkyl sulfates, alkylbenzene sulfonates, polyoxyethylene alkyl sulfates, sulfosuccinic acid diester salts; mono- or dialkylamines and their polyoxyethylene adducts , mono- or di-long-chain alkyl quaternary ammonium salts; and amphoteric surfactants such as carbobetaine, sulfobetaine, hydroxysulfobetaine, and the like.

The composition of the invention is prepared immediately before use. Storage stability-
It is more convenient for practical use to mix components that do not cause problems when mixed together and form a liquid in advance.

For example, if you use a spray container that can separately package a hydrogen peroxide solution, a liquid bleach activator, and an aqueous alkaline solution containing a water-soluble solvent, and mix them in one operation just before use, you can replace the conventional hypochlorous acid liquid. There is no difference in ease of use compared to bleach spray. Other optional components may also be added in advance to the system without deteriorating storage stability or effectiveness.

In addition, the composition of the composition and pi (as used in the present invention) are the composition and pn of the mixture immediately before use.

When the composition of the present invention is used as a mold removal agent, the effective oxygen concentration of the composition is 0.1 to 2%, preferably 0.4 to 2%.
It is desirable to adjust it to 1%.

〔Example〕

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

Model mold plate Nore +1 Cladosporium herbalum (cladospori
A plastic plate (made by BS resin) inoculated with M. umherbarua + and cultured at 30°C for 14 days was used as a model mold plate t- (7,5 CDI x 7.5 cm).

A model mold plate was placed horizontally in a rectangular styrene container (10 cm x 10 cm) with an axillary opening, and 40 m of aqueous solutions of various mold remover compositions prepared in the following examples were dropped.
After being left for a while, it was washed with water, air-dried, and then visually observed.

The evaluation criteria at this time are as follows.

◎: The entire mold has been bleached. ○: Some unbleached parts remain. Δ: Considerable unbleached parts remain. Example 1 A mold remover having the composition shown below was prepared and the above mold removal test was carried out. went. The test results are shown in Table-1.

*Mold remover composition Hydrogen peroxide 3% by weight Caliethyl alcohol carbonate water Table Example 2 ■ 5% hydrogen peroxide aqueous solution 5 Amount balance shown in Table-1 ptno, s 45% by weight 45% by weight Add the above ■ to ■ to the trigger container Attach a sachet containing a solution of 100% pH 10.5) and spray it on the joints of the tile walls in the bathroom where there is significant mold growth.After leaving it for 1 hour and washing with water, the mold was almost completely removed. removed.

Claims (1)

[Claims] 1 (a) 1 to 6% by weight of hydrogen peroxide (b) 2 to 20% by weight of a bleach activator that is liquid at room temperature (c) 1 to 50% by weight of a water-soluble solvent (d) Water The remainder A bleaching agent composition for hard surfaces comprising: