Low-shrink in-mold coating

Details Low-shrink in-mold coating Low-shrink in-mold coating

B - Operations, Transporting

32

B

400/4304, 18/911

B32B 17/04 (2006.01) B29C 37/00 (2006.01) C08G 18/68 (2006.01) C08J 5/00 (2006.01) C09D 175/04 (2006.01) C09D 175/06 (2006.01) C09D 175/14 (2006.01)

Patent

CA 1120175

ABSTRACT OF THE DISCLOSURE A laminate comprises an adherent in-mold thermo- set coating composition on a thermoset polyester glass fiber substrate, the coating composition comprising essentially the reaction product of an unsaturated aliphatic fumarate polyester diol, a saturated polyester diol flexibilizer, a cross-linking aliphatic polyol having from 3 to 6 OH groups, a diisocyanate in an amount by weight sufficient to provide from about 50% to 120%, preferably from about 80 to 99%, of the stoichiometric amount of -NCO groups required to react with all of the active hydrogen atoms in the coating composition and an ethylenically unsaturated monomer sufficient to polymerize with and crosslink the unsaturated polyester in admixture with a minor amount by weight of polyvinyl acetate which serves to reduce or eliminate shrinkage of the coating composition.

327842

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