JPS6341596A - Detergent composition - Google Patents

Abstract

(57) [Abstract] 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 a cleaning composition, and more particularly to a cleaning composition with improved enzyme-based cleaning effects.

[Conventional technology and problems]

It is generally known that various enzymes are used in laundry detergents to enhance the cleaning effect (for example, 5urface
Active Agents and Deterge
nts Voln, 5chiyartz, Per
ry, Berth+ 1977 edition 596 pages)
. It is also well known that the activity of enzymes is generally reduced by chlorine bleach and free chlorine in tap water, and various reducing agents have been proposed (Japanese Patent Publication No. 41-20235).
No., tlsP No. 3,893,954).

Among these proposed reducing agents, sulfites are the cheapest and have good compatibility with other components in detergents.
It has been commonly used for a long time.

However, 1) when sulfite is blended into a detergent slurry, it is easily oxidized by oxygen in the air over time, and 2) industrially available sulfite has an apparent specific gravity of 1.3.
As mentioned above, there are problems such as particles having an average particle size of 100 μm or less and being very easy to classify, and there has been a strong desire to develop a technology for stably blending sulfites.

Means for Solving Problem C] As a result of intensive study on this point, the present inventors have found that by simultaneously containing a polycarboxylic acid polymer or its salt and zeolite together with a sulfite, they are blended into a detergent slurry, The inventors have discovered that the stability of sulfites in spray-dried detergents to air oxidation is improved, and have completed the present invention.

That is, the present invention provides a detergent composition containing a surfactant and an enzyme containing 0.3 to 3% by weight of sulfite, 0.3 to 3% by weight of polycarboxylic acid polymer or its salt, and 2 to 25% by weight of zeolite. The present invention provides a cleaning composition characterized by:

Although the mechanism of the stabilizing effect of the polycarboxylic acid polymer and zeolite of the present invention against air oxidation of sulfite is not clear, it is thought that the effect is due to some kind of interaction.

Examples of the polycarboxylic acid polymer or its salt used in the present invention include polyacrylic acid, polyacecoolic acid, polyaconitic acid, polyitaconic acid, polycitraconic acid, polyfumaric acid, polymaleic acid, polymethaconic acid,
Poly-α-hydroxyacrylic acid, polyvinylphosphonic acid, sulfonated polymaleic acid, maleic anhydride-diisobutylene copolymer, maleic anhydride-styrene copolymer, maleic anhydride-methyl vinyl ether copolymer,
Maleic anhydride-ethylene copolymer, maleic anhydride-
Ethylene crosslink copolymer, maleic anhydride-vinyl acetate copolymer, maleic anhydride-acrylonitrile copolymer, maleic anhydride-acrylic ester copolymer, maleic anhydride-butadiene copolymer, maleic anhydride- Isoprene copolymer, poly-β-ketocarboxylic acid derived from maleic anhydride and carbon monoxide, itaconic acid, ethylene copolymer, itaconic acid-aconitic acid copolymer, itaconic acid-maleic acid copolymer, itacone Examples include acid-acrylic acid copolymers, malonic acid-methylene copolymers, methaconic acid-fumaric acid copolymers, and salts thereof. Among these, polyacrylates are particularly preferred. The molecular weight is preferably 1,000 to 100,000,
In particular, 4,000 to 30,000 is good.

The content of the polycarboxylic acid polymer or its salt of the present invention is 0
．． It is 3 to 3% by weight, preferably 0.5 to 2% by weight.

If it is less than 0.3% by weight, there will be no stabilizing effect on sulfite due to interaction with zeolite, and if it exceeds 3% by weight, no further effect can be expected.

The zeolite of the present invention is preferably a crystalline aluminosilicate. For example, ^-type and X-type zeolites are suitable. The average particle size of zeolite is 0.1 to 20.
μ, more preferably about 0.1 to 10 μ.

In the present invention, the content of zeolite is 2 to 25% by weight,
Preferably it is in the range of 5 to 20% by weight.

If it is less than 2% by weight, there will be no effect on stabilizing sulfite due to interaction with the polycarboxylic acid polymer or its salt,
Even if it exceeds 25% by weight, no further effects can be expected.

As the sulfite of the present invention, alkali metal salts and alkaline earth metal salts can be used, preferably alkali metal salts such as sodium and potassium, etc.
Its content is 0.3-3% by weight, preferably 0.5-2
Weight%.

If it is less than 0.3% by weight, the effect as a reducing agent is insufficient, and if it exceeds 3% by weight, no further effect can be expected.

Enzymes that are essential components of the present invention are selected from protease, amylase, lipase, and cellulase, and two or more types can be used in combination if necessary. The optimal pHN range of these enzymes is known to range from acidic to alkaline, and any of these can be used.
Those having high activity in the alkaline region or having an optimum pH in the alkaline region are preferable.

Examples of such enzymes include Alcalase, Savinase, Esperase (manufactured by Novo Industri), Maxatase, Maxacal (manufactured by G15t-Brocades), Alkaline Protease API-21 (manufactured by Showa Denko), and Bioprase. (manufactured by Nagase Seikagaku Kogyo Co., Ltd.), and amylases include Termamil (Novo In-d).
ustri), Spitase (manufactured by Nagase Seikagaku Kogyo ■)
Examples of lipase include Lipase OF (manufactured by Meito Sangyo),
Oliverase (manufactured by Nagase Seikagaku Kogyo ■), Lipase 5P-
225 (manufactured by Novo 1ndustri), and examples of cellulases include filtrase (Gist-Br
ocades), Cellulase 5P-227 (Novo
Industri), cellulases produced by Bacillus N1 to N4 (Imitation Koken Bacillus No. 1138 to 1141), and the like.

Although these enzymes may be used as crude enzyme powders, it is preferable to granulate them together with excipients, stabilizers, etc., and, if necessary, coat the surface before use.

The amount of enzyme blended in the cleaning composition is preferably 0.1% to 5% by weight in terms of crude enzyme or granules; if it is less than 0.1% by weight, no cleaning effect can be expected; If the amount is more than % by weight, the cleaning effect will reach a plateau, which is not preferable.

The surfactant used in the present invention has an average carbon number of 1
Linear alkylbenzene sulfonate having an alkyl group of 0 to 16, a linear or branched alkyl group having an average of 10 to 20 carbon atoms, and an average of 0.5 to 8 moles of ethylene oxide added to each molecule. alkyl ethoxy sulfate,
Alkyl sulfate having an alkyl group having an average of 10 to 20 carbon atoms, olefin sulfonate having an average of 10 to 20 carbon atoms per molecule, α-sulfo fatty acid having an average of 10 to 20 carbon atoms per molecule methyl ester salt,
An anionic surfactant such as a fatty acid salt having an average carbon number of 10 to 20, an alkyl group having an average carbon number of 10 to 20, and 1
Nonionic surfactants such as polyoxyethylene alkyl ether with ~20 moles of ethylene oxide added, higher fatty acid alkanolamide or its alkylene oxide adduct, other betaine type amphoteric surfactants, sulfonic acid type amphoteric surfactants, phosphoric acid ester surfactant,
Examples include cationic surfactants. The blending amount is 5~
95 weight percent, and generally 10 to 40 weight percent.

In addition, the following components can be used in the cleaning composition of the present invention as necessary.

■) Divalent metal ion scavengers orthophosphate, pyrophosphate, tripolyphosphate, nitrilotriacetate, ethylenediaminetetraacetate, citrate, isocitrate, etc. 2) Alkaline agents and inorganic salts silicates, carbonates Salt, sesquicarbonate, sulfate, etc. 3) Anti-recontamination agents Polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, carboxymethylcellulose, etc. 4) Bleach, fluorescent dyes, etc. Bleaching agents such as sodium percarbonate, sodium percarbonate, sodium sulfate, chloride In addition to sodium hydrogen peroxide additives, commercially available fluorescent dyes as brighteners, flavoring agents, bluing agents, and the like may be added as necessary.

5) Other ingredients commonly used in detergents other than those listed above may also be used as necessary.

The detergent dough used in the present invention may be manufactured by a known manufacturing method such as a spray drying method or a granulation method, and a detergent dough manufactured by a spray drying method is preferably used. The cleaning material made by the spray drying method is produced in the form of hollow particles with a particle size of about 50 to 2000μ by spraying an aqueous slurry of heat-resistant components such as surfactants and builders into a hot space and drying without any particular restrictions on the manufacturing conditions. Components such as fragrances, enzymes, bleaching agents, and inorganic alkali builders such as zeolite and soda carbonate may be added after the spray drying.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

After producing the detergent having the composition shown in Table 1 by spray drying, it was packaged in a detergent carton, and the top of the detergent carton was cut off.
I left it indoors. After standing for one month, the remaining amount of sodium sulfite was titrated with sodium thiosulfate by the iodine-starch method.

Sodium sulfite residual rate (χ) − Amount of sodium sulfite after being left for one month

Claims (1)

[Claims] 1. In a detergent composition containing a surfactant and an enzyme, 0.3 to 3% by weight of sulfite, 0.3 to 3% by weight of polycarboxylic acid polymer or its salt, and 2 to 25% by weight of zeolite. A cleaning composition comprising: 2. The cleaning composition according to claim 1, wherein the salt of the polycarboxylic acid polymer is a polyacrylate.