EP0124913A1
Expired / Lapsed
EP
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Granular detergent compositions containing mixed polymer additive system
Assignee: Procter and Gamble European Technical Center
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Filing: 1984-01-30
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Granted: —
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Expires: 2004-01-30
Abstract
Abstract Granular detergent compositions with no or reduced levels of phosphorus -containing builders containing a mixture of homopolymeric and copolymeric carboxylates. Preferred homopolymeric carboxylates are polyacrylates having a molecular weight below 3000, most preferably a mixture of polymer species having molecular weights of 1000 and 2000 respectively. The preferred copolymeric ingredient contains maleic acid and (meth)-acrylic acid monomers.
Inventors
- 👤 Paolo Zini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 16:51
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A granular detergent composition containing no or reduced levels of P-containing builders, surface-active agents, polymeric -carboxylates and, if desired, conventional detergent additives including non-phosphorus detergent builders, characterized in, that the composition contains a) from 0.5% to 15% by weight of a polyacrylate homopolymer having a molecular weight below 3000; b) from 0.5% to 15% by weight of a copolymer which consists of an ethylenically unsaturated monocarboxylic acid monomer having not more than 5 carbon atoms, and an ethylenically unsaturated dicarboxylic acid monomer having not more than 6 carbon atoms, whereby the molar ratio of the monomers is from 1:4 to 4:1, and, whereby the weight ratio of the homopolymeric ingredient to the copolymeric ingredient is in the range from 4:1 to 1:4.
Claim 2
Dependent Claim
122 words
A granular detergent composition containing no or reduced levels of P-containing builders, surface-active agents, polymeric -carboxylates and, if desired, conventional detergent additives including non-phosphorus detergent builders, characterized in, that the composition contains a) from 0.5% to 15% by weight of a polyacrylate homopolymer having a molecular weight below 3000; b) from 0.5% to 15% by weight of a copolymer which consists of an ethylenically unsaturated monocarboxylic acid monomer having not more than 5 carbon atoms, and an ethylenically unsaturated dicarboxylic acid monomer having not more than 6 carbon atoms, whereby the molar ratio of the monomers is from 1:4 to 4:1, and, whereby the weight ratio of the homopolymeric ingredient to the copolymeric ingredient is in the range from 4:1 to 1:4.
Claim 3
Dependent Claim
20 words
The composition in accordance with Claim 1 wherein the copolymeric ingredient is comprised of (meth)-acrylic acid and maleic acid monomers.
Claim 4
Dependent Claim
48 words
The composition in accordance with Claim 1 wherein, for a detergent composition containing P-builders in a level, expressed as phosphorus, of from 2% to 5% by weight, the homopolymeric ingredient represents from 0.5 to 4% by weight and the copolymeric ingredient represent from 0.5% to 4% by weight.
Claim 5
Dependent Claim
45 words
The composition in accordance with Claim 1 wherein, for a detergent composition containing P-builders in a level, expressed as phosphorus , below 2% by weight, the homopolymeric ingredient represents from 2% to 8% by weight and the copolymeric ingredient from 2% to 8% by weight.
Claim 6
Dependent Claim
26 words
The composition in accordance with Claims 1,3 and 4 wherein the weight ratio of the copolymeric ingredient to the homopolymeric ingredient is from 2:1 to 1:2.
Claim 7
Dependent Claim
39 words
The composition in accordance with Claim 1 wherein the homopolymeric ingredient is comprised of a polyacrylate having a molecular weight of 2000 and a polyacrylate of a molecular weight of 1000 in a weight ratio of 2:1 to 1:2.
Claim 8
Dependent Claim
31 words
The detergent composition in accordance with Claims 1 and 6 wherein the homopolymer is represented by a 1:1 weight ratio mixture of polyacrylates having molecular weights of 1000 and 2000 respectively.
References Cited (Backward Citations)
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