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US 6,204,342 B1Granted
Thickening active H-containing resin with polycarbodiimide
AssigneeReichhold Chemicals, Inc.
InventorHildeberto Nava
Life of this patent
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Abstract
A method of thickening a resin comprises blending (1) a resin containing active hydrogens, such as an unsaturated polyester (2) a polycarbodiimide, and (3) an organic diluent to form a reactive mixture; and reacting the resin containing active hydrogens and the polycarbodiimide such that the resin and polycarbodiimide become chemically bound.
Claims17
A method of thickening a resin comprising:
- blending (1) an unsaturated polyester resin;
- (2) a polycarbodiimide;
- and (3) styrene to form a reactive mixture;
- and
- reacting the unsaturated polyester resin and the polycarbodiimide at a temperature between about 5° C. and 60° C. for a time period of from about 1 to about 48 hours such that the resin and polycarbodiimide become chemically bound to provide a thickened resin.
2 more elements
A method of forming a reinforced product comprising:
- blending (1) an unsaturated polyester resin;
- (2) a polycarbodiimide;
- and (3) styrene to form a reactive mixture;
- combining fiberglass with the reactive mixture;
- reacting the unsaturated polyester resin and the polycarbodiimide at a temperature between about 5° C. and 60° C. for a time period of from about 1 to about 48 hours such that the resin and polycarbodiimide become chemically bound to provide a thickened resin;
- and
- curing the chemically bound resin and the polycarbodiimide to form a cured reinforced product.
4 more elements
Dependencies are inferred from the claim text.