Oligomeric phosphate/amino composition
AssigneeFord Motor Company
InventorsMohinder S. Chattha, Henk vanOene
Life of this patent
Estimating the term…
Abstract
A thermosetting composition particularly suitable as a high solids coating composition for automotive applications. Exclusive of pigments, solvents and ether non-reactive components, the composition consists essentially of: (A) an oligomeric hydroxy functional phosphate ester having a number average molecular weight of between about 500 and about 5000 and being prepared by reaction of a polyepoxide and an acid phosphate ester; (B) up to 50 weight percent of a hydroxy functional compound; and (C) between about 15 and about 50 weight percent of an amine aldehyde crosslinking agent.
Claims8
A thermosetting composition which exclusive of pigments, solvents and other nonreactive components consists essentially of:
- (A) an oligomeric hydroxy functional phosphate ester having a number average molecular weight of between about 500 and about 5000 and being prepared by reaction of:
- (i) polyepoxide resin having a number average molecular weight of between about 120 and about 4500 and being selected from the group consisting of aliphatic, cycloaliphatic and aromatic polyepoxides;
- and
- (ii) acid phosphate ester having the formula ##STR2## wherein n=1 to 2 and R is selected from alkyl and aryl groups containing between about 1 and about 20 carbon atoms,
- said acid phosphate ester and said polyepoxide being reacted in such amounts that there are between about 0.7 and about 1.1 acid groups per epoxy group in said reaction mixture;
- (B) up to about 50 weight percent based on the total weight of components (A), (B) and (C) of a hydroxy functional compound having a number average molecular weight of between about 120 and about 4000;
- and
- (C) an amine aldehyde crosslinking agent in an amount ranging from about 15 to about 50 weight percent based on the total weight of (A), (B) and (C).
Dependencies are inferred from the claim text.