Patent ID: 8218931
Filing Date: 2012-07-10
Classification: C03C,C09D

Abstract:
1. A Radiation Curable Coating composition, which may be used as an inner primary coating, an outer primary coating, a single coat, a matrix, or a buffer resin composition, comprising: (a) at least one radiation-curable oligomer wherein said at least one radiation curable oligomer is a fatty-acid modified epoxy acrylate; (b) at least one ethylenenic unsaturated reactive diluent; (c) one or more photoinitiators, (d) optionally one or more additives selected from the group consisting of wherein said composition further optionally comprises a photosensitizer; wherein said oligomer(s) and diluent(s) are selected from the group that does not include moieties with Urethane chemistry; wherein said at least one radiation-curable oligomer is present in said composition in an amount from about 40 weight percent to about 99 weight percent; wherein said at least one ethylenenic unsaturated reactive diluent is present in an amount of from about 1 weight percent to about 60 weight percent; wherein said fatty-acid modified epoxy acrylate has between 12 and 28 carbon atoms in the backbone and is an aromatic or cycloaliphatic compound or resin comprising one or more epoxy groups per molecule; wherein said radiation curable composition does not include any pigments, dyes or other color changing moieties; wherein the photoinitiator is selected from the group consisting of isobutyl benzoin ether; and wherein said composition, after cure, has resistance to thermal degradation as measured by less than 10% weight loss after exposure of cured specimens in a natural convection furnace for 100 hours at 200° C.