JPH04103697A - Bleaching agent composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition having improved storage stability and powder properties by using phthalimide percarboxylic acid, anhydrous magnesium sulfate, etc., sodium carbonate, etc., and a specific surfactant at specific ratios. CONSTITUTION:The objective composition contains (A) 25-80wt.% of a compound of formula ((n) is integer of l-15; M is H, alkali metal or alkaline-earth metal), (B) 0.5-50wt.% of one or more kinds of compounds selected from anhydrous magnesium sulfate, anhydrous calcium chloride, anhydrous sodium sulfate and anhydrous sodium citrate, (C) 5-70wt.% of sodium carbonate and/or sodium bicarbonate and (D) 0.1-5wt.% of one or more kinds of surfactants selected from polyoxyethylene alkyl(phenyl) ether, alkyl sulfate and alkylbenzene sulfonate.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bleach composition, more particularly a bleach composition containing phthalimidobarcarboxylic acid, which has improved storage stability and powder physical properties. relating to things.

[Conventional technology and its problems]

Phthalimidovercarboxylic acid has strong oxidizing power,
It is expected to be used as a bleach base (EP325
No. 288, Er'325289, EP34994
No. 0).

However, consideration has not yet been given to incorporating such a compound as a component of a bleach composition.

[Means for solving Section B]

Therefore, the present inventors have conducted intensive research on bleach compositions containing phthalimidovercarboxylic acid that can be supplied on the market as commercial products, and have found that by blending specific anhydrous salts, alkaline agents, and surfactants, The present invention has been completed by discovering that it is possible to obtain a bleach composition that has a stable bleaching effect, exhibits little decrease in bleaching effect even after long-term storage, and does not deteriorate powder physical properties.

That is, the present invention provides (a) a compound represented by the following general formula (I) (wherein n is an integer of 1 to 15, and H represents H or an alkali metal atom or an alkaline earth metal atom). ~80% by weight (b)
One or a mixture of two or more selected from anhydrous magnesium sulfate, anhydrous calcium chloride, anhydrous sodium sulfate, and anhydrous sodium citrate.
0.5 to 50% by weight (C) 5 to 70% by weight of one or two selected from sodium carbonate and sodium bicarbonate (d) Polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, alkyl sulfate and one or more surfactants selected from alkylbenzene sulfonates 0.
A bleaching agent composition characterized in that it contains 1 to 5% by weight of four components.

The phthalimidobarcarboxylic acid as the component (a) used in the present invention has the following formula -tl2(I) [wherein n and gate are the same as above. ] It is a compound represented by: 25 to 80% by weight, preferably 25 to 50% by weight in the composition.

Among these, a compound in which n is 5 and h is H in formula (I) is particularly preferred since it has particularly good stability and biodegradability. The percarboxylic acid can be used as a powder as it is, but it can also be used in polyethylene glycols, polyoxyethylene alkyl ethers and higher grades having a melting point of 30°C or higher, preferably 45°C or higher, particularly preferably 50 to 90°C. It is desirable to use one coated with granules using one or more compounds selected from fatty acids. These granulation coating agents preferably contain 2 to 30% of percarboxylic acid.
It is desirable to use a heavy weight percent, particularly preferably 5 to 20 weight percent. The method for producing the granulated coating is not particularly limited, but for example, a method of mixing and stirring with percarboxylic acid powder at a temperature higher than the melting point of the granulated coating, a highly concentrated aqueous solution of the granulated coating, or a method of producing a molten coating. There are methods of mixing and stirring while adding or spraying. If necessary, granulation may be coated in the presence of an inorganic compound such as anhydrous sodium sulfate that can take water as crystal water.

Component (b) used in the present invention is one or a mixture of two or more selected from anhydrous magnesium sulfate, anhydrous calcium chloride, anhydrous sodium sulfate, and anhydrous sodium citrate, and 0. The amount is 5 to 50% by weight, preferably 1 to 10% by weight. Among these, anhydrous magfusium sulfate is particularly preferred.

The component (C) used in the present invention, sodium carbonate and sodium bicarbonate, is present in the composition in an amount of 5 to 70% by weight, preferably 10 to 65% by weight, more preferably 20 to 65% by weight.
Placement type.

Component (d) used in the present invention is one or more surfactants selected from polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, alkyl sulfate-1, and alkylbenzene sulfonate. However, specifically, the average carbon number is 10 to 1
polyoxyethylene alkyl ether having 8 alkyl groups and having 1 to 30 moles of ethylene oxide added;
Polyoxyethylene alkylphenyl ether having an alkyl group with an average carbon number of 9 to 14 and added with 1 to 20 moles of ethylene oxide, an alkyl sulfate salt with an average carbon number of 10 to 18, an alkyl group with an average carbon number of 9 to 14 Examples include alkylbenzenesulfonate salts having the following: 0.1 to 5% by weight, preferably 1 to 5% by weight of the composition. It is desirable that component (d) be impregnated with component (C) in advance and then blended into the composition.

In addition to the above components (a) to (d), the bleach composition of the present invention may optionally contain enzymes such as protease, lipase, amylase, and cellulase, polyacrylate, and maleic anhydride/olefin copolymer. Small amounts of polymer chelating agents such as combined hydrolyzate salts, anti-fading agents such as 2-hydroxyethyliminodiacetic acid salts, fragrances, coloring agents, etc. can be blended.

〔Example〕

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

Example 1 150g of the composite composition described in No. 1 was placed in a 300cc polyethylene bottle with a small gap for air ventilation, and stored at 40°C for one month, and then storage stability was evaluated using the following method. In Table 1, component (d) was mixed with component (C) in advance and impregnated.

(2) Powder physical properties ○: No clumps ×: Clumps (3) Bleaching rate Dissolve the compound in tap water at 20°C to a concentration of 0.5%, and use a commercially available contaminated cloth (EMPA No. , 114)
was soaked for 30 minutes, and the bleaching rate was calculated using the following formula.

Claims (1)

[Claims] 1 (a) The following general formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [In the formula, n is an integer from 1 to 15, M is H or an alkali metal atom, or Represents an alkaline earth metal atom. ] 25 to 80% by weight of a compound represented by (b) 0.5 to 50% by weight of one or a mixture of two or more selected from anhydrous magnesium sulfate, anhydrous calcium chloride, anhydrous sodium sulfate, and anhydrous sodium citrate ( c) 5 to 70% by weight of one or a mixture of two selected from sodium carbonate and sodium hydrogen carbonate (d) selected from polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, alkyl sulfate, and alkylbenzene sulfonate A bleach composition comprising 0.1 to 5% by weight of one or more surfactants. 2. The bleach composition according to claim 1, wherein component (a) is granulated and coated with one or more compounds selected from polyethylene glycol, polyoxyethylene alkyl ether, and fatty acids having a melting point of 30° C. or higher. 3. The bleach composition according to claim 1 or 2, wherein component (c) is impregnated with component (d).