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US 12,221,554 B2Granted
Electrodepositable coating composition
AssigneePRC-DeSoto International, Inc.
InventorsChristopher A. Dacko, Michael A. Mayo, Gregory J. McCollum, Robin M. Peffer, Se Ryeon Lee
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Abstract
The present invention is directed to a phosphated epoxy resin comprising at least one terminal group comprising a phosphorous atom covalently bonded to the resin by a carbon-phosphorous bond or by a phosphoester linkage; and at least one carbamate functional group. The present invention is also directed towards aqueous resinous dispersions comprising the phosphated epoxy resin, methods of coating a substrate, coated substrates, and methods of making a phosphated epoxy resin.
Claims31
An aqueous resinous dispersion comprising:
- (a) at least 50% by weight of a phosphated epoxy resin, based on the total weight of the resin solids, the phosphated epoxy resin comprising:
- (i) at least one terminal group comprising a phosphorous atom covalently bonded to the resin by a carbon-phosphorous bond or by a phosphoester linkage;
- and
- (ii) at least one carbamate functional group;
- and
- (b) a curing agent.
3 more elements
Dependencies are inferred from the claim text.