JPH03121200A - Bleaching agent composition for toilet or piping - Google Patents

Abstract

PURPOSE:To obtain a bleaching agent for toilet or piping, free from irritating odor and excellent in bleaching power by using a specified organic peracid as an active bleaching species. CONSTITUTION:A bleaching agent composition wherein the active bleaching species comprises an organic peracid of formula I, II or III wherein R is 1-5C alkl; AO is alkylene oxide; n is 0 to 20. The organic peracid can be used as it is for the composition. However, considering the storage stability of the peracid, it is more desirable that the peracid be formed during application of the composition; that is, it is desirable to jointly use hydrogen peroxide and an organic peracid precursor (bleaching activator) that reacts with hydrogen peroxide in a solution to form the organic peracid. As a peroxide that generates hydrogen peroxide in an aqueous solution, particularly sodium percarbonate, sodium perborate monohydrate, and sodium perborate tetrahydrate are prefer ably used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bleach composition for toilets or plumbing, which has no pungent odor and has an excellent bleaching blade.

[Conventional technology and its problems]

When a flush toilet is used continuously for a long period of time, colored dirt accumulates on the inner surface of the toilet and the water reservoir surface, especially on the water seal.This dirt is mainly caused by inorganic substances such as calcium phosphate and iron oxide,
Organic excreta such as crude protein and bile decomposition products, microorganisms or their metabolites, etc.

These stains are difficult to remove with cleansers or surfactants alone, so acid detergents containing hydrochloric acid as a main ingredient or bleach compositions containing chlorine bleaches such as hypochlorite are often used. .

However, although toilet bleach using hypochlorite has excellent performance, it is highly dangerous to the eyes and skin, has a strong characteristic chlorine odor, and is difficult to use in small toilets. On top of that, there is the problem that toxic gases can be generated if used in conjunction with acidic toilet cleaners.

In recent years, toilet bleach using oxygen bleach, which does not pose such risks, has been studied (Japanese Patent Laid-Open No. 1976-1976).
97, JP-A-62-133964, etc.).

In addition, stains similar to those found in toilets, such as protein, fat, slime, and scale, adhere to drain pipes in kitchens, bathrooms, etc., and inside piping such as bathtubs. Oxygen bleach is also used to remove these stains. It is used (Japanese Unexamined Patent Publication No. 56-78695,
JP-A No. 61-166899, etc.).

Oxygen bleach has the disadvantage that its bleaching blade is weaker than chlorine bleach. Tetraacetyl diamine, tetraacetyl glycoluril, pentaerythritol tetraacetate, and the like are particularly excellent as bleach activators that enhance the bleaching edge of oxygen bleaches. However, these bleach activators produce peracetic acid as the bleach active species;
It has a strong pungent odor and is difficult to put into practical use.

(Means for Solving the Problems) The bleaching active species in toilet or plumbing bleaches that use oxygen bleach include: high bleaching blades, bleaching blades that last for at least 30 minutes, and bad odor. , the absence of irritating odor, etc. As a result of extensive research into bleaching active species that meet these conditions, the present inventors found that
The present invention was completed based on the discovery that a specific organic peracid has no irritating odor and exhibits an excellent bleaching effect.

That is, in the present invention, the bleaching active species has the following formula: % () (1) () [wherein R is an alkyl group having 1 to 5 carbon atoms, 80 is an alkylene oxide such as ethylene oxide or propylene oxide, n represents an integer of 0 to 20. ] A bleach composition for toilets or plumbing, which is characterized by being an organic peracid represented by:

The organic peracid represented by general formula (n) or (1) can be used as it is in the toilet or plumbing bleach composition of the present invention. However, considering the storage stability of the organic peracid, it is better to generate the organic peracid at the time of use. That is, hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution is used in combination with an organic peracid precursor (bleach activator) that reacts with hydrogen peroxide to generate the organic peracid. preferable.

Peroxides that generate hydrogen peroxide in aqueous solution include sodium percarbonate, sodium tripolyphosphate/hydrogen peroxide adduct, sodium pyrophosphate/hydrogen peroxide adduct,
Urea/hydrogen peroxide adduct, or 4NazSOa' 2
11zO2・NaC1, sodium perborate hydrate,
Examples include sodium perborate tetrahydrate, sodium persilicate, sodium peroxide, and calcium peroxide. Among these, particularly preferred organic peracid precursors are sodium percarbonate, sodium perborate hydrate, and sodium perborate tetrahydrate according to the following formula (■).

(V) or (VI) RO-(AOh"Cl1t-COON
(IV)RO-CHzC)It-COOH(V)R
O% coon (Vl) [In the formula, R represents an alkyl group having 1 to 5 carbon atoms, AO represents an alkylene oxide such as ethylene oxide or propylene oxide, and n represents an integer of 0 to 20. ] Preferred are acid anhydrides of organic acids represented by the following, esters of the organic acids and polyhydric alcohols, esters of choline chloride, esters of N-hydroxysuccinimide, or amides of pyroglutamic acid. In particular, esters of organic acids and polyhydric alcohols are preferred organic peracid precursors in terms of durability of bleaching blades. Examples of polyhydric alcohols that form esters include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol,
, 3-propanediol, 1,4-butanediol, glycerol, 1,3-dihydroxyacetone, glucose, galactose, sorbitol, pentaerythritol, fructose, sucrose, lactose, cellbiose, and the like.

In the toilet or plumbing bleach composition of the present invention, the organic peracid represented by formula (I), (n) or (ffl) above is generally blended in an amount of 0.2 to 50%.

When using a peroxide that generates tho□ in LO□ or an aqueous solution, the blending amount is generally 0.5 to 98%.
, preferably 1 to 50%, and the blending amount of the organic peracid precursor is generally 0.1 to 50%, preferably 0.5 to 50%.
It is 30%.

The toilet or plumbing bleach composition of the present invention further has a pH of
The effect can be further enhanced by adding a buffer that adjusts the The pH is suitably 5-13, more preferably 6-10. 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 carbonates such as sodium carbonate and potassium carbonate. , carbonates such as ammonium carbonate, alkali metal silicates such as sodium silicate and potassium silicate, silicates such as ammonium silicate, and the like can be used.

Furthermore, if necessary, alkali metal sulfates such as sodium sulfate, potassium sulfate, and lithium sulfate, alkali metal bicarbonates such as ammonium sulfate, sodium bicarbonate, potassium bicarbonate, and lithium bicarbonate, ammonium bicarbonate, and the like can be used.

In addition, if necessary, chelating agents such as citrate, ethylenediaminetetraacetate, sodium P-toluenesulfonate, sodium xylene sulfonate, sodium alkenylsuccinate, solubilizing agents such as urea, surfactants, penetrating agents, clay, etc. Suspending agents, abrasives, pigments, dyes, fragrances, etc. can be added.

Preferred amounts of other optional ingredients are as follows.

Buffer 0-30% Chelating agent 0-20% Solubilizing agent
0-10% Surfactant 0-5% Thickener 0-5% Abrasive 0-20% Pigments, dyes, fragrances, etc. Appropriate amount Surfactant can promote the penetration of bleaching active species into stains, so 0. It is desirable to add 1 to 5%.

As surfactants, alkyl glycosides, polyoxyethylene alkyl ethers, Sorvita 7 fatty M esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene fatty acid esters, oxyethylene oxypropylene block polymers (Pluronic), fatty acid monoglycerides, and Nonionic surfactants such as amine oxides; anionic interfaces such as soaps, alkyl sulfates, alkylbenzene sulfonates, polyoxyethylene alkyl sulfates, sulfosuccinic acid diester salts, alkylnaphthalene sulfonates, and alkyldiphenyl ether disulfonates. Active agents: Cationic surfactants such as mono- or dialkylamines and their polyoxyethylene adducts, mono- or di-long chain alkyl quaternary ammonium salts; Ampholytic surfactants such as carbobetaine, sulfobetaine, hydroxysulfobetaine, etc. Can be mentioned.

The bleach composition for toilets or plumbing according to the present invention can be used in a dosage form, but hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution and an organic peroxide can be used. In terms of storage stability, it is best to package the precursor separately, mix the two immediately before use, and add water if necessary to form a solution, slurry, or paste, and immediately sprinkle or spray it on the target surface. This is desirable because there are no concerns about this. The effective oxygen concentration during use is generally adjusted to 0.1-3%, preferably 0.2-1%.

〔Effect of the invention〕

According to the present invention, there is no irritating odor and there is a long-lasting
Since it is possible to obtain an oxygen-based bleach composition for toilets or pipes that exhibits an excellent bleaching edge, it is possible to overcome the problems that conventional oxygen-based bleach compositions for toilets or pipes had when they were put into practical use. It can be solved.

〔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 bleach composition having the formulation shown in Table 1 was prepared, and its bleaching power and odor were evaluated using the methods shown below.

The organic peracid precursors shown in Table 2 were used.

<Method for Measuring Bleaching Power> A men's urinal toilet was used for 14 days without flushing after use.

Bleach composition 5d having the composition shown in Table 1 was sprinkled on the stains in the toilet, left for 15 minutes, washed with water, and the bleaching effect was visually evaluated. The judgment criteria at this time are as follows.

4...Very dirty (has fallen off) 3...A lot of dirt has come off. 2... Some dirt has fallen off. 1... Dirt has not come off at all Note that the scores in Table 2 indicate the average values of the 10 judges.

Odor> The odor of the toilet bleach composition was sensory evaluated by a panel of 10 people.

O: No irritating or bad odor ×・・・There is a pungent odor or bad odor These results are shown in Table-2.

Example 2 Drain pipe stain created as a model, i.e. 100°Dll
10kg of hard water, 100g of soap powder, 50g of soybean oil,
Add 50 g of rapeseed oil and 100 g of liquid paraffin and mix well.
The mixture was circulated through a transparent vinyl chloride hose.

After 5 to 6 hours of circulation, model dirt accumulates all over the inner wall of the vinyl chloride hose. This stain can hardly be removed just by washing with water.

Seal one end of the above-mentioned hose cut to a length of 30 cm with a rubber stopper, pour 3 g of bleach of the following composition into the other end, pour water to the top of the hose, and stand it up in a test tube room.

After a certain period of time, the degree of removal of model dirt was checked.

The results are shown in Table-3.

Soda percarbonate 45% 3.6-
Dioxahebbutanoic acid 45% diethylene glycol diester Sodium carbonate, white 2 Large mouth Soda percarbonate 5% 75% Sodium carbonate 20% In the table: ◎: 95% or more of the inner wall area has been removed ○: 50 to 95% of the inner wall area % removed Δ: 20 to 50% of the inner wall area was removed. ×: 20% or less of the inner wall area was removed.

Claims (1)

[Claims] 1. The bleaching active species has the following general formula (I), (II) or (II
I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(III) [In the formula, R is carbon number 1 ~5 alkyl group, AO represents alkylene oxide, and n represents an integer of 0 to 20. ] A bleach composition for toilets or plumbing, characterized by being an organic peracid represented by: 2 Hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution, and reacts with hydrogen peroxide to form the general formula (I), (
The bleach composition for toilets or plumbing according to claim 1, which contains an organic peracid precursor that produces an organic peracid represented by II) or (III). 3 The organic peracid precursor has the following general formula (IV), (V) or (
VI) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(IV) RO-CH_2CH_2COOH(V) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(VI) [In the formula, R is an alkyl group with 1 to 5 carbon atoms, AO represents alkylene oxide, and n represents an integer of 0 to 20. ] according to claim 2, which is an acid anhydride of an organic acid represented by, an ester of the organic acid and a polyhydric alcohol, an ester of choline chloride, an ester of N-hydroxysuccinimide, or an amide of pyroglutamic acid. Toilet or plumbing bleach composition. 4 Polyhydric alcohol is ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, glycerol, 1,3-dihydroxyacetone, glucose, galactose, sorbitol, pentaerythritol, The bleach composition for toilets or plumbing according to claim 3, which is selected from the group consisting of fructose, sucrose, lactose, and cellbiose.