Patent ID: 6706801
Filing Date: 2004-03-16
Classification: C08G,C09D,Y10T

Abstract:
An aqueous, reactive binder composition for aqueous, reactive, filler compositions comprisinga) at least one emulsion copolymer which contains isocyanate-reactive groups and which is present in an aqueous dispersion or an emulsion, said copolymer being produced by polymerizing a monomer mixture of a1), a2), a3) and a4): a1) from 50 to 85 wt. % of one or more hardening monomers, said hardening monomers producing homopolymers having glass transition temperature above 0Â° C., a2) from 5 to 30 wt. % of one or more plasticizing monomers, said plasticizing monomers producing homopolymers having glass transition temperatures below 0Â° C., a3) from 2 to 30 wt. % of one or more hydroxy-functional monomers, and a4) from 1 to 4 wt. % of one or more carboxyl- and/or carboxylate-functional monomers, wherein the sum of monomers a1) through a4) is 100 wt. % and b) at least one polyisocyanate which contains free isocyanate groups and has a viscosity of from 10 to 10,000 mPas/23Â° C. and a functionality of from 2.4 to 5.5.