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US 4,242,415 AGranted
In-mold coating compositions containing functional group terminated liquid polymers
AssigneeICI Americas Inc.
InventorsJoseph Feltzin, Thomas J. Galvin, Erich Kuehn
Life of this patent
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Abstract
Fully cured reinforced molded resins such as polyesters, polyurea urethanes, polyureas, polyurethanes, polyisocyanurates, polyepoxies and polycarbonate resins can be in-mold coated to cover surface defects such as sink marks and microcracks with an improved coating composition comprising reactive liquid polymers, a vinyl monomer, and certain cross-linkable unsaturated ester resins as co-polymers.
Claims12
A coating composition comprising:
- 2-15% by weight of an amine-terminated liquid polymer containing an average from about 1.7 to about 3 amine groups per molecule, said groups being primary, secondary or a mixture thereof, and said polymer having the formula:
- ##STR4## wherein Y is selected from a univalent radical obtained by removing hydrogen from an amine group of an aliphatic, alicyclic, aromatic or a heterocyclic amine containing from 2-20 carbon atoms and at least two amine groups, at least two of said amine groups being primary, secondary or mixtures of primary and secondary amines, and B is a polymeric backbone comprising carbon-carbon linkages, and
- 2- 50% by weight of a vinyl ester urethane resin having the following general formula:
- C--I--(D--N).sub.t D--I--C, wherein C is a carbamyl-linked radical derived from a hydroxy-terminated ester of acrylic or methacrylic acid, D is a radical derived from polyalkoxylated bisphenol A type compounds, I is a radical derived from a polyisocyanate, N is a radical derived from an unsaturated aliphatic dicarboxylic acid or an anhydride thereof, and t is an integer equal to 1-5;
- and
- 30-60% by weight of co-polymerizable ethylenically unsaturated monomers.
3 more elements
Dependencies are inferred from the claim text.