C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 7/12 (2006.01) C08G 18/28 (2006.01) C09D 5/02 (2006.01) C09D 7/02 (2006.01) C09D 7/14 (2006.01) C09D 175/08 (2006.01)
Patent
CA 2170949
The present invention relates to an aqueous composition comprising dispersed solids and, as dispersing agent, a water soluble polyisocyanate addition productcontaining hydrophilic polyether chains, having a maximum isocyanate group content of 1.0% by weight and an ethylene oxide content (molecular weight 44) of30 to 80% by weight, in which the polyisocyanate addition product is the reaction product of A) a polyisocyanate component having an average NCO functionality of at least 2.5 and an NCO content of 5 to 50% by weight with B) 5 to 100 equivalent %, based on the equivalents of isocyanate groups present in component A), of one or more monohydric polyether alcohols having a molecular weight of 150 to 5000 and an ethylene oxide content of 50 to 99.5% by weight, C) 0 to 20 equivalent %, based on the equivalents of isocyanate groups present in component A), of one or more monohydric alcohols having a molecular weight of 32 to 5000 other than component B), D) 0 to 50 equivalent %, based on the equivalents of isocyanate groups present in component A), of an amine component consisting of at least one tertiary amine having a molecular weight of 88 to 250 which contains an isocyanate-reactive group and E) 0 to 20 equivalent %, based on the equivalents of isocyanate groups present in component A), of one or more compounds having a molecular weight of 32 to 3000 and at least two isocyanate-reactive groups, at an isocyanate index of 100 to 200, to form urethane groups and optionally urea groups, in which any excess NCO groups have been reduced down to a maximum residual content of 1.0% by weight by secondary reactions taking place simultaneously with or subsequently to the reaction of components A) to E).
K"onig Klaus
Kirchmeyer Stephan
Mazanek Jan
Wilmes Oswald
Aktiengesellschaft Bayer
Swabey Ogilvy Renault
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