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.
Claims29
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;
- wherein the terminal group of the phosphated epoxy resin comprises the structure:
- wherein R1 and R2 each independently represent hydrogen, hydroxyl, an alkyl radical, an aryl radical, or a phosphoester group, and
- wherein the phosphated epoxy resin comprises at least one constitutional unit A comprising the structure:
- wherein R1 and R2 each independently represent hydrogen, an alkyl radical or an aryl radical.
An aqueous resinous dispersion comprising:
- (a) a 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;
- wherein the terminal group of the phosphated epoxy resin comprises the structure:
- wherein R1 and R2 each independently represent hydrogen, hydroxyl, an alkyl radical, an aryl radical, or a phosphoester group, and
- wherein the phosphated epoxy resin comprises at least one constitutional unit A comprising the structure:
- wherein R1 and R2 each independently represent hydrogen, an alkyl radical or an aryl radical.
Dependencies are inferred from the claim text.