C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/1, 400/3024,
C08F 20/26 (2006.01) C08F 220/12 (2006.01) C09D 7/00 (2006.01) C09K 3/00 (2006.01)
Patent
CA 1225791
- 1 - HOE 83/F 048 Abstract of the disclosure: Copolymers prepared by emulsion or solution co- polymerization, initiated by free radicals, of unsatura- ted copolymerizable monomers, the copolymers being built up from a) 1 - 45% by weight of ethylenically unsaturated car- boxylic acids, b) 0.5 - 30% by weight of a surface-active crotonic acid ester, c) 30 - 85% by weight of methacrylic acid esters or acrylic acid esters of aliphatic (C1-C18) alcohols, d) 0 - 40% by weight of other ethylenically unsaturated comonomers, e) 0 - 3% by weight of polyethylenically unsaturated com- pounds and f) 0 - 5% by weight of molecular weight regulators, and, if appropriate, the free acid groups of the copoly- mers subsequently having been partly or completely neutralized by addition of bases and converted into water- soluble or colloidally water-dispersible copolymer salts. In addition, processes for the preparation of the copolymers by solution or emulsion copolymerization and, if appropriate, subsequent conversion thereof into the copolymer salts, and the use of the products as vis- cosity increasing and rheology-modifying substances in - 2 - aqueous systems, in particular aqueous dispersions, pre- ferably for thickening emulsion paints, emulsion gloss lacquers, textile printing pastes and paper printing pastes, and furthermore as sizing agents in the textile industry.
450956
Engel Dieter
Rinno Helmut
Zimmerschied Klaus
Celanese Emulsions Gmbh
Fetherstonhaugh & Co.
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