C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/06 (2006.01) C08G 18/08 (2006.01) C08G 18/46 (2006.01)
Patent
CA 2101876
Abstract Water-thinnable two-component coating composition A water-thinnable two-component coating composition, comprising 1) a polyisocyanate component and 2) a polyester resin which is composed of the starting components (a), (b), (c), (d) and (e) or their ester-forming derivatives, the ratio of the sum of the hydroxyl equivalents to the sum of the carboxyl equivalents in the reactants being between 1:0.5 and 1:2.0, where (a) is at least one dicarboxylic acid which is not a sulfo monomer, (b) is 0 to 15 mol% of at least one difunctional sulfo or phosphono monomer, whose functional groups are carboxyl and/or hydroxyl groups, with at least one sulfonate or phosphonate group, (c) is at least one glycol, (d) is 0 to 40 mol% of a higher-functional compound (functionality >2), whose functional groups are hydroxyl and/or carboxyl groups, and (e) is 0 to 20 mol% of a monofunctional carboxylic acid, the amounts of free hydroxyl groups being between 30 and 350 milliequivalents of OH/100 g and the content of free neutralized and/or neutralizable acid groups being between 5 and 350 meq/100 g. These coating compositions are suitable in particular for the preparation of primers, fillers, topcoats and one- coat finishes.
Schwab Michael
Zoeller Joachim
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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