Low-shrink in-mold coating

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

1979-04-23

1980-09-16

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

525126, 525127, 525131, C08K 322, C08K 326, C08K 334, C08K 336

Patent

active

042229294

ABSTRACT:
A laminate comprises an adherent in-mold thermoset 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.

REFERENCES:
patent: 3396210 (1968-08-01), McKillip et al.
patent: 3429948 (1969-02-01), Massouhre
patent: 3763065 (1973-10-01), Hermann
patent: 3824201 (1974-07-01), McGranughan et al.
patent: 3886229 (1975-05-01), Hutchinson et al.
patent: 4051085 (1977-09-01), Hess et al.

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