C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3012
C08L 51/08 (2006.01) C04B 26/04 (2006.01) C04B 41/48 (2006.01) C08F 2/16 (2006.01) C08F 290/14 (2006.01) D21H 19/24 (2006.01)
Patent
CA 1331814
Abstract of the disclosure Organic dispersion polymers based on ethylenically unsaturated monomers which contain water-soluble graft polymers containing vinyl alcohol units having a polyure- thane grafting base, processes for their preparation and their use Dispersion polymers of ethylenically unsaturated monomers which are prepared in the presence of protective colloids and if appropriate emulsifiers by polymerization in an aqueous medium and are present in aqueous dispersion form or in finely dispersed dry powder form. They contain, as protective colloids, water-soluble graft polymers con- taining vinyl alcohol units on a polyurethane grafting base, the polyurethane grafting bases containing at least 2 urethane groups in the molecule and units of diisocya- nates and diols, and polymer radicals of units of car- boxylic acid vinyl esters having 3 to 20 carbon atoms and/or hydrolysis products thereof and if appropriate units of other ethylenically unsaturated monomers and/or hydrolysis products thereof being grafted onto the polyurethane grafting bases. The amount of vinyl alcohol units in the water-soluble graft polymers is at least 20% by weight and the degree of hydrolysis of the monomer units originally grafted onto the polyurethane grafting bases is at least 50 mol%. Use of the organic dispersion polymers as a coating composition, as binders for building materials and as a starting material for the preparation of molding compo- sitions, adhesives, binders, impregnating agents and points.
613740
Huth Hans-Ullrich
Kroggel Matthias
Rauterkus Karl Josef
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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