Patent Number: 6,169,150

Title: Coating compositions with dicarboxylic half ester containing polymers and polyanhydride curing agents

Abstract: Coating compositions comprised of (a) a carboxyl functional adduct which is the reaction product of (i) a compound, polymer or oligomer containing pendant and/or terminal hydroxyl or epoxy functional groups and (ii) tartaric acid, malic acid, adipic acid, succinic acid, or anhydrides of said acids; and an anhydride curing agent are disclosed. The coating compositions have accelerated tack-free times and enhanced adhesion to zinc-coated steel and cold rolled steel without the use of a chrome containing wash primer.

Inventors: Swarup; Shanti (Hampton Township, PA), Carney; Joseph M. (Reserve Township, PA), Connelly; Bruce A. (West Deer Township, PA)

Assignee: PPG Industries Ohio, Inc.

International Classification: C09D 167/00 (20060101); C09D 133/06 (20060101); C08L 67/00 (20060101); B32B 015/08 (); C08L 033/14 (); C08L 063/02 ()

Expiration Date: 01/02/2018