EP0378261A2
Expired / Lapsed
EP
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Liquid detergent composition containing enzyme and enzyme stabilization system
Assignee: Procter and Gamble Co
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Filing: 1990-01-05
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Granted: —
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Expires: 2010-01-05
Abstract
Abstract Stabilization systems for aqueous liquid detergent compositions containing detergent enzymes and peroxygen bleaches are disclosed. The detergent compositions contain a carboxylic acid or a mixture of carboxylic acids as an enzyme stabilizing system.
Inventors
- 👤 Christiaan Arthur Jacques Kamiel Thoen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D3/16; C11D3/38; C11D3/386; C11D3/38663; C11D3/39; C11D3/3947
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
An aqueous liquid detergent composition comprising organic surfactants; a peroxygen bleach compound; a detergent enzyme; characterized in that it further comprises, as an enzyme stabilizing system, from 0.01% to 15% of a carboxylic acid of the formula X-R-COOH, where X is H, OH or COOH and R is an unsubstitued or hydroxy substitued C₁ to C₉ alkyl, alkenyl, alkynyl or aryl group; and mixtures of said acids.
Claim 2
Dependent Claim
67 words
An aqueous liquid detergent composition comprising organic surfactants; a peroxygen bleach compound; a detergent enzyme; characterized in that it further comprises, as an enzyme stabilizing system, from 0.01% to 15% of a carboxylic acid of the formula X-R-COOH, where X is H, OH or COOH and R is an unsubstitued or hydroxy substitued C₁ to C₉ alkyl, alkenyl, alkynyl or aryl group; and mixtures of said acids.
Claim 3
Dependent Claim
25 words
An aqueous liquid detergent composition according to Claim 1, having a pH of at least 8.5, preferably at least 9.0, most preferably at least 9.5.
Claim 4
Dependent Claim
18 words
An aqueous liquid detergent composition according to Claim 1 or 2 wherein the peroxygen compound is a perborate.
Claim 5
Dependent Claim
18 words
An aqueous liquid detergent composition according to Claim 1 or 2 wherein the peroxygen compound is a percarbonate.
Claim 6
Dependent Claim
45 words
An aqueous liquid detergent composition according to Claim 3, comprising a water-miscible organic solvent such that the perborate compound is present as a dispersion of solid particles and the amount of available oxygen in solution is less than 0.5 %, preferably less than 0.1 %.
Claim 7
Dependent Claim
36 words
An aqueous liquid detergent composition according to any one of the preceding claims, wherein the amount of the carboxylic acid enzyme stabilizer is from 0.01 % to 10 %, preferably from 0.1 % to 7.5 %.
Claim 8
Dependent Claim
39 words
An aqueous liquid detergent composition according to any one of the preceding claims wherein the carboxylic acid enzyme stabilizer is selected from acetic acid, propionic acid, adipic acid, and mixtures thereof, and mixtures of these carboxylic acids with formate.
Claim 9
Dependent Claim
34 words
An aqueous liquid detergent composition according to anyone of the preceding claims wherein the detergent enzyme is selected from the group consisting of detergent proteases, detergent amylases, detergent lipases, detergent cellulases, and mixtures thereof.
Claim 10
Dependent Claim
20 words
An aqueous liquid detergent composition according to Claim 8 wherein the detergent enzyme comprises detergent protease, preferably high alkaline protease.
Claim 11
Dependent Claim
25 words
An aqueous detergent composition according to any one of Claims 2-9, comprising, as a second enzyme stabilizer, from 0.01 % to 5 % magnesium ions.
References Cited (Backward Citations)
No citation records indexed.
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