EP0265257A2
Expired / Lapsed
EP
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Detergent composition
Assignee: Unilever PLC
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Filing: 1987-10-22
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Granted: —
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Expires: 2007-10-22
Abstract
Abstract A detergent composition especially suitable for washing coloured fabrics includes a polymer mixture comprising a) an alkalimetal carboxymethyl cellulose; b) a vinylpyrrolidone polymer such as PVP with a molecular weight of 40,000; and c) a carboxylate polymer such as polyacrylate or maleic acid/acrylic acid copolymer. The compositions optionally contain a peroxyacid bleach system. Improved colour care of fabrics is obtained compared with any one or two of these polymers.
Inventors
- 👤 Anthony Henry Clements
- 👤 Graham Andrew Catton
- 👤 Antoine Pierre Auguste François Rocourt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761; C11D3/20; C11D3/22; C11D3/222; C11D3/225; C11D3/3769; C11D3/3776
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A detergent composition comprising a detergent-active material and a detergency builder characterised in that it further includes from 0.3 to 15% by weight of a polymer mixture comprising the following polymeric materials (a), (b) and (c): (a) an alkalimetal carboxymethylcellulose; (b) a vinylpyrrolidone polymer having an average molecular weight within the range of about 5000 to about 350,000; (c) a polycarboxylate polymer selected from compounds having the empirical formula: wherein X is 0 or CH₂; Y is a co-monomer or mixture of co-monomers; R¹ and R² are bleach-and alkali-stable polymer-end groups; R³ is H, OH or C₁-C₄ alkyl; M is H, alkali metal, alkaline earth metal, ammonium or other water-soluble cation; p is from 0 to 2; and n is at least 10; and mixtures thereof at a mixing ratio of polymer (a) : polymer (b) within the range of 1:2 to 2:1 and of polymer (b) : polymer (c) within the range of 1:1 to 1:4.
Claim 2
Dependent Claim
157 words
A detergent composition comprising a detergent-active material and a detergency builder characterised in that it further includes from 0.3 to 15% by weight of a polymer mixture comprising the following polymeric materials (a), (b) and (c): (a) an alkalimetal carboxymethylcellulose; (b) a vinylpyrrolidone polymer having an average molecular weight within the range of about 5000 to about 350,000; (c) a polycarboxylate polymer selected from compounds having the empirical formula: wherein X is 0 or CH₂; Y is a co-monomer or mixture of co-monomers; R¹ and R² are bleach-and alkali-stable polymer-end groups; R³ is H, OH or C₁-C₄ alkyl; M is H, alkali metal, alkaline earth metal, ammonium or other water-soluble cation; p is from 0 to 2; and n is at least 10; and mixtures thereof at a mixing ratio of polymer (a) : polymer (b) within the range of 1:2 to 2:1 and of polymer (b) : polymer (c) within the range of 1:1 to 1:4.
Claim 3
Dependent Claim
22 words
A detergent composition according to claim 1, characterised in that it comprises from 0.6% to 6% by weight of said polymer mixture.
Claim 4
Dependent Claim
31 words
A detergent composition according to any one of claims 1-3, characterised in that said polymer (c) is a copolymeric polycarboxylate formed from an unsaturated polycarboxylic acid and an unsaturated monocarboxylic acid.
Claim 5
Dependent Claim
23 words
A detergent composition according to claim 3, characterised in that said copolymeric polycarboxylate is a copolymer of maleic acid (anhydride) and (meth)acrylic acid.
Claim 6
Dependent Claim
17 words
A detergent composition according to claim 1, characterised in that said polymer (c) is a homopolymeric polyacrylate.
Claim 7
Dependent Claim
32 words
A detergent composition according to any one of the above claims, characterised in that the detergent-active material contains a nonionic material or mixture thereof having an HLB of not more than 10.5.
Claim 8
Dependent Claim
16 words
A detergent composition according to Claim 1, characterised by further comprising a peroxyacid compound bleach system.
References Cited (Backward Citations)
No citation records indexed.
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