C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/37 (2006.01)
Patent
CA 2488032
The invention relates to copolymers which contain alkylene oxide units and also contain the following constituents that are incorporated by polymerization in a statistical or block-by-block manner: (a) 50 to 93 mol % of acrylic acid and/or of a water-soluble salt of the acrylic acid; (b) 5 to 30 mol % of methacrylic acid and/or of a water-soluble salt of the methacrylic acid, and; (c) 2 to 20 mol % of at least one non-ionic monomer of formula (II), in which the variables have the following meanings: R1 represents hydrogen or methyl; R2 represents a chemical bond or unbranched or branched C1-C6 alkylene; R3 represents identical or different unbranched or branched C2-C4 alkylene groups; R4 represents unbranched or branched C1-C6 alkyl, and; n ranges from 3 to 50. These copolymers are used as an additive in detergents and cleansers.
L'invention concerne des copolymères comportant des unités d'oxyde d'alkylène et contenant, polymérisés statiquement ou par blocs, (a) 50 à 93 % en mole d'acide acrylique et/ou d'un sel soluble dans l'eau de l'acide acrylique, (b) 5 à 30 % en mole d'acide méthacrylique et/ou d'un sel d'acide méthacrylique soluble dans l'eau et (c) 2 à 20 % en mole au moins d'un monomère non ionique de la formule (I) où les variables ont la signification suivante: R<1> représente hydrogène ou méthyle; R<2> représente une liaison chimique ou un reste d'alkylène C1-C4 non ramifié ou ramifié; R<3> représente des restes d'alkylène C2-C4 identiques ou différents ramifiés ou non ramifiés ; R<4> représente un alkyle C1-C6 non ramifié ou ramifié; n vaut 3 à 50. L'invention concerne également l'utilisation de ces copolymères comme adjuvants de détergents.
Baum Pia
Brodt Gregor
Michl Kathrin
Nied Stephan
Weingart Franz
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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