Electrodepositable coating from gelled epoxy-polyester and amine
AssigneePPG Industries Ohio, Inc.
InventorsThomas C. Moriarity, Geoffrey R. Webster, Jr.
Life of this patent
Estimating the term…
Abstract
The present invention is directed to electrodepositable coating compositions comprising an at least partially gelled resin or reaction product formed from reacting (i) an epoxy-functional polyester with (ii) an amine. The present invention also includes a method for electrocoating a conductive substrate with the described electrodepositable coating compositions. Additionally, the present invention is directed to a conductive substrate coated according to the described method.
Claims19
A curable coating composition comprising an at least partially gelled reaction product prepared from reactants comprising:
- (a) an epoxy functional polyester;
- and
- (b) a polyoxyalkylene polyamine wherein the epoxy functional polyester is selected from the group consisting of the following formulae (I) or (II)
- wherein n is an interger ranging from about 1 to about 15, and
- wherein R′ and R″ each independently represents an alkyl group, and n is an interger ranging from about 1 to about 15.
The curable coating composition of claim 4, wherein the polyol is saturated bisphenol A.
A curable coating composition comprising an at least partially gelled ionic reaction product prepared from reactants comprising:
- (a) an epoxy functional polyester;
- and
- (b) an amine-functional material wherein the epoxy functional polyester is selected from the group consisting of the following formulae (I) or (II)
- wherein n is an interger ranging from about 1 to about 15, and
- wherein R′ and R″ each independently represents an alkyl group, and n is an interger ranging from about 1 to about 15.
Dependencies are inferred from the claim text.