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US 4,259,472 AGranted
Two component oligomeric phosphate/isocyanate composition
AssigneeFord Motor Company
InventorsMohinder S. Chattha, Henk Van Oene
Life of this patent
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Abstract
Two component compositions particularly useful as high solids thermosetting coating compositions and molding compositions. Compositions comprise a first component comprising an oligomeric hydroxy functional phosphate ester prepared by reaction of a polyepoxide and an acid phosphate ester; and a second component comprising a isocyanate crosslinking agent.
Claims11
A thermosetting composition comprising:
- I. A first component comprising 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 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
- (b) phosphate acid ester having the formula ##STR3## wherein n=1 to 2 and R is selected from alkyl and aryl groups containing between about 1 and about 20 carbon atoms, said phosphate ester and said polyepoxide being reacted in such amounts that there are between about 0.5 and about 1 acid groups per epoxy group in said reaction mixture;
- and
- II. A second component comprising isocyanate crosslinking agent selected from the group consisting of aliphatic, cycloaliphatic and aromatic polyisocyanates, said second component being incorporated and mixed with said first component immediately prior to disposition of said composition for its intended use in an amount such that there are between about 0.75 and about 1.2 reactive isocyanate groups per hydroxyl group in said first component.
3 more elements
A thermosetting composition comprising
- I. A first component comprising
- (A) An oligomeric hydroxy functional phosphate ester having a number average molecular weight of between about 1500 and about 2500 and being prepared by reaction of
- (a) an epoxide having a number average molecular weight of between about 150 and about 2000 and being selected from the group consisting of aliphatic cycloaliphatic and aromatic epoxides;
- and
- (b) phosphate acid ester having the formula ##STR4## wherein n=1 to 2 and R is selected from alkyl groups having 2 to 8 carbon atoms, said phosphate ester and said polyepoxide being reacted in such amounts that there are between about 0.7 and about 0.9 acid groups per epoxy group in said reaction mixture;
- and
- (B) between about 5 and about 25 weight percent based on the total weight of (A) and (B) of a hydroxy functional compound having a number average molecular weight of between about 120 and about 4000.
4 more elements
Dependencies are inferred from the claim text.