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US 5,780,530 AGranted
Thermosetting resin composition
AssigneeNippon Paint Co., Ltd.
InventorsKeita Mizutani, Saori Yoshimatsu, Kinya Yamakawa
Life of this patent
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Abstract
A thermosetting resin or coating composition contains (a) a film-forming polyol resin, (b) a curing agent reactive with the polyol resin, (c) a hydrolyzate/polycondensate of tri- or tetraalkoxysilane, and (d) a catalyst for promoting the reaction between the polyol resin (a) and the curing agent (b).
Claims14
A thermosetting resin composition comprising:
- (a) a film-forming polyol resin having a plurality of alcoholic hydroxyl groups corresponding to a hydroxyl number from 5 to 300 and a number average molecular weight from 500 to 20,000;
- (b) a curing agent reactive with said resin (a) selected from the group consisting of a blocked polyisocyanate and an aminoplast resin:
- (c) a hydrolyzate/polycondensate comprising reactive ultrafine silica particles having an inertial radius of 10 angstrom or less when determined by the small angle X-ray scattering method, produced by the hydrolysis and polycondensation reaction of tetramethoxysilane or an oligomer thereof in the presence of an amount of water greater than required to achieve 100% hydrolysis in theory;
- and
- (d) a catalyst for promoting the reaction between said resin (a) and said curing agent (b).
2 more elements
Dependencies are inferred from the claim text.