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US 6,184,314 B2Granted
Vinyl ester of polyepoxide and unsaturated monocarboxyic acid with maleic stabilizer
AssigneeSwancor Industrial Co., Ltd.
InventorsJan-Yang Tsai, Shih-Wen Yur
Life of this patent
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Abstract
A vinyl ester resin derived from the reaction of about equivalent amounts of an unsaturated monocarboxylic acid and a polyepoxide is stabilized with from 0.01 to 5 weight percent of maleic acid and/or maleic anhydride.
Claims2
A thermosettable resin having an improved storage life comprising:
- a vinyl ester resin prepared by reacting about equivalent amounts of are unsaturated monocarboxylic acid and a polyepoxide resin;
- and
- a stabilizer having between 0.01 to 5 weight percent of the total composition of a resin selected from the group consisting of maleic acid, maleic anhydride and a mixture thereof, said stabilizer being mixed with said vinyl ester resin subsequent to preparation thereof.
Dependencies are inferred from the claim text.