Patent ID: 6025438
Filing Date: 2000-02-15
Classification: C08L,C09J,Y10T

Abstract:
A one-component thermosetting coating composition consisting of at least one chemically setting binder, at least one curing or crosslinking agent, and at least onesaid composition being semisolid and tackfree at temperatures <50.degree. C.,wherein the chemically setting binder has a weight average molecular weight (M.sub.w) of between 500 and 250,000, a melting point of more than 50.degree. C., a glass transition temperature of more than -20.degree. C. and cures fully at a temperature in the range from 80 to 250.degree. C. and in doing so reaches at least 10% of the final strength within 15 seconds, the binder has epoxide groups or ethylenically unsaturated groups as reactive groups and is capable of being cured or crosslinked to form a thermosetting polymer,wherein the toughening substance is a polymer selected from the group consisting of butadiene-acrylonitrile copolymers having terminal carboxyl, epoxide, amino and ethylenically unsaturated groups, and highly branched aliphatic hydrocarbon epoxides, and which polymer is reactive so as to be chemically bound into the binder,wherein at the least one curing or crosslinking agent is a metal complex of the general formula M(SR).sub.x B.sub.z in whichM=a metal ion,SR=an acid radical ion,B=a Lewis Base,x=a number from 1 to 8 andz=a number from 7 to 8and said curing or crosslinking agent is effective to convert said binder to a thermoset state upon the application of energy to said composition.