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AssigneeHitachi Chemical Company, Ltd.
InventorsTadashi Fujii, Kazuyuki Tanaka, Tsutomu Toyoda, Hirobumi Izumi
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An unsaturated polyester resin composition for coating metal substrates, comprising an unsaturated alkyd component and a polymerizable vinyl monomer, said unsaturated alkyd component selected from the group consisting of: (a) compounds resulting from addition of mono-epoxy compounds possessing a .beta.,.gamma.-unsaturated ether to the carboxyl group of dicyclopentadiene-modified unsaturated alkyds, and (b) mixtures of dicyclopentadiene-modified unsaturated alkyds with unsaturated alkyds obtained by the ring-opening copolymerization of .alpha.,.beta.-unsaturated dicarboxylic anhydrides and mono-epoxy compounds possessing a .beta., .gamma.-unsaturated ether group.
An unsaturated polyester resin composition for coating metal substrates, comprising an unsaturated alkyd component and a polymerizable vinyl monomer, said unsaturated alkyd component selected from the group consisting of:
A method for the manufacture of an unsaturated polyester resin composition for coating metal substrates, comprising the steps of causing a dicyclopentadiene-modified unsaturated alkyd to react with a mono-epoxy compound possessing a .beta.,.gamma.-unsaturated other group in the presence of a basic catalyst at temperatures within the range of 80.degree. to 150.degree. C. and mixing the resultant reaction product with a polymerizable vinyl monomer.
A method for the manufacture of an unsaturated polyester resin composition for coating metal substrates, which comprises the steps of subjecting an .alpha.,.beta.-unsaturated dicarboxylic anhydride and a mono-epoxy compound possessing a .beta.,.gamma.-unsaturated ether group to a ring-opening copolymerization at temperatures within the range of 80.degree. to 150.degree. C., mixing the resultant unsaturated alkyd with a dicyclopentadiene-modified unsaturated alkyd, and mixing the resultant mixed unsaturated alkyd component with a polymerizable vinyl monomer.
Dependencies are inferred from the claim text.