JPH01190795A - Cleaning and bleaching agent composition - Google Patents

Abstract

PURPOSE:To obtain a cleaning and bleaching agent composition which not only has excellent bleaching capacity but also can be stably incorporated in a detergent system, by adding a particular org. per acid and a particular compd. CONSTITUTION:A cleaning and bleaching agent composition is obtd. by adding an org. per acid (A) of formula I of II contg. 3-10wt.% org. carboxylic acid exhibiting a pKa of 2-5.5 and a polyethylene glycol (B) having an MW of 4000-20,000. There has been a problem that whilst the org. peracid is superior in bleaching capacity to an inorg. peroxide, it is difficult to incorporate stably the org. peracid in a detergent system. The use of the org. peracid (A) and compd. (B) in combination has rendered the stable incorporation in a detergent system feasible.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to organic peracid-containing cleaning bleach compositions.

[Prior art and problems to be solved by the invention] Bleach cleaning containing inorganic peroxides such as percarbonates, perborates, and monopersulfates, and organic peracids such as dodecane diperacid and monoperphthalic acid. agents are known in the art. Organic peracids have better bleaching properties than inorganic peroxides, but they have the problem of being difficult to stably incorporate into detergent systems.

[Means to solve the problem]

As a result of intensive research on detergents containing organic peracids, the present inventors discovered that if a specific organic peracid and a specific compound were used in combination, they could be stably blended into a detergent system, and the present invention was completed. .

That is, the present invention provides compounds of the following general formula (I) or (I[) containing 3 to 10% by weight of an organic carboxylic acid having a pKa of 2 to 5.5.
The present invention relates to a cleaning bleach composition characterized by containing an organic peracid represented by the following formula and polyethylene glycol having a molecular weight of 4,000 to 20,000.

1((), CC1(2C1l 2SCLCI(2CO3
1 ((I) The organic peracid represented by the general formula (I) or (II) (hereinafter abbreviated as organic peracid (I) or (II)) is
It is easily obtained by reacting the corresponding organic carboxylic acid with an inorganic peroxide such as hydrogen peroxide. The organic peracid used in the present invention contains 3 to 10% by weight of an organic carboxylic acid having a pKa of 2 to 5.5. The organic peracid used in the present invention containing an amount of organic carboxylic acid in this range has good stability when incorporated into a detergent system, especially an alkaline detergent.

The organic peracid may be granulated using a desensitizing diluent and incorporated into the detergent system, as is generally done. Examples of the desensitizing diluent include inorganic desensitizing diluents such as sodium sulfate, magnesium sulfate, boric acid, sodium tripolyphosphate, and zeolite; organic desensitizing diluents such as hydrocarbon waxes, higher fatty acids, cellulose-based substances, and starch-based substances; Alternatively, a mixture of these may be used. A desensitizing diluent suitable for the organic peracid used in the present invention is one in which at least a portion thereof is a higher fatty acid having 10 to 24 carbon atoms, such as lauric acid, palmitic acid, myristic acid, and stearic acid. By granulating using such a desensitizing diluent, stability in detergents can be further improved.

- Usually, it can be easily granulated by a known method such as a dry granulation method using 40 to 90 parts by weight of an organic peracid and 10 to 60 parts by weight of a diluent.

The organic peracid is usually included in the composition in an amount of 1 to 10% by weight.

The composition of the present invention further has a molecular weight of 4000 as an essential component.
~20,000 polyethylene glycol is blended.

The addition of polyethylene glycol greatly improves the stability of the organic peracids used in the present invention. Those with a molecular weight lower than 4000 have a small stabilizing effect, and those with a molecular weight higher than 2 (I000) have problems in terms of solubility.

It is preferable that polyethylene glycol is blended in the composition in an amount of 1 to 5% by weight.

In the cleaning bleach composition of the present invention, the components other than the above two essential components are not particularly limited, but the cleaning bleach composition usually contains 10 to 60% by weight of a surfactant, an alkaline bilgoose or 2 valence metal ion scavenger 20-60% by weight,
Contains 0 to 60% by weight of fillers such as Glauber's salt and other small amounts of ingredients.

Examples of anionic surfactants include straight chain or branched alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfo fatty acid salts or esters, etc. Nonionic surfactants include polyoxyalkylene alkyl or alkenyl ethers, polyoxyethylene alkylphenyl ethers, higher fatty acid alkanolamides, or alkylene oxide adducts thereof. , sucrose fatty acid ester, fatty acid glycerin monoester, alkylamine oxide, etc. Examples of the cationic surfactant include quaternary ammonium salts. Examples of the amphoteric surfactant include carboxy or sulfobetaine type surfactants.

As the alkaline bilge or divalent metal ion scavenger, tripolyphosphate, pyrophosphate, orthophosphate,
Representative examples include zeolite, silicate, carbonate, nitrilotriacetate, ethylenediaminetetraacetate, and citrate.

Other minor ingredients include anti-recontamination agents, enzymes, fluorescent dyes, and fragrances.

〔Example〕

EXAMPLES The present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

Example 1 A cleaning bleach composition having the following composition containing various organic peracids and polyethylene glycol shown in Table 1 was prepared, and the bleaching effect was evaluated by the method below. Table 1 shows the results.

Detergent composition Alkyl sodium sulfate (c = 14) 5 Hardened beef tallow fatty acid soda 2 Sodium silicate <JIS
No. 2) 11 carbonated soda
12 zeolite
17 Carboxymethyl cellulose 2 Fluorescent dye 0.2 Fragrance
Small amount of organic peracid
Table 1 Polyethylene Glycol Table 1 Awn Salt Balance (Bleaching effect by immersion bleaching) Black tea prepared by dissolving a cleaning bleach composition at 0.8% in 300°C of water at 20°C and using the method below. Contaminated cloth (
After washing and drying, the bleaching rate was determined using the following formula.

Bleaching rate of black tea contaminated cloth: Reflectance is 460 for NDR-101DP manufactured by Nippon Heavy Industries Ltd.
Measured using a nm filter.

Tea-contaminated cloth: Boil 80g of Nitto black tea (yellow package) in 3β ion-exchanged water for about 15 minutes, strain it through desized Saran cotton cloth, soak cotton gold cloth #2003 in this liquid, and boil for about 15 minutes. . Remove from the heat, let stand for about 2 hours, then dry naturally. Rinse with water until the washing liquid is no longer colored, dehydrate,
After pressing, it was made into a test piece of lQcm x IQcm and used for an experiment.

Bleaching effect by washing in a washing machine> A washing bleach composition was dissolved in tap water at 20°C to a concentration of 0.133%, and a tea-stained cloth (8X
2.5 sheets of 8cm) at 20℃ using a turbotometer.
After washing for 10 minutes, washing with water, and drying, the bleaching rate was determined by the above method.

<Storage Stability Test> 10 g of the composition shown in the table is placed in a sealable plastic container (50d), stored at 40°C for 2 weeks, and the effective oxygen residual rate is determined using the following formula.

]0 -8 = =10 The mixture of Example 2 was heated to 60-70°C and extruded into granules with a diameter of 1 mm (particle size: 0.5-1.5 mm), and the detergent composition was added with 7% polyethylene. 2% by weight of glycol (MW 12000) was blended.

The stability after storage at room temperature for 6 months was good with an effective oxygen residual rate of 97%.

Applicant's agent Kaoru Furutani

Claims (1)

[Scope of Claims] 1. An organic peracid represented by the following general formula (I) or (II) containing 3 to 10% by weight of an organic carboxylic acid with a pKa of 2 to 5.5, and polyethylene with a molecular weight of 4,000 to 20,000. A cleaning bleach composition characterized in that it contains glycol. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) 2. Organic peracid is granulated with a desensitizing diluent, at least a part of which is higher fatty acid. The cleaning bleach composition according to claim 1.