Primer-surfacer composition of an acrylic polymer, a polyester resin and an organic dispersant

Claim 1

A primer-surfacer composition comprising 10-60% by weight of a binder and 40-90% by weight of a solvent for the binder; wherein the binder consists essentially of A. 75.0-95.0% by weight, based on the weight of the binder, of an acrylic polymer in solution consisting essentially of 1. 70-90% by weight of methyl methacrylate, 2. 9-19% by weight of an alkyl methacrylate having 2-8 carbon atoms in the alkyl group or an alkyl acrylate having 2-12 carbon atoms in the alkyl group, and 3. 1-11% by weight of either acrylic acid or methacrylic acid that is reacted with 1-8% by weight of an alkylene imine; b. 4.9-24.9% by weight, based on the weight of the binder, of a polyester resin in solution which is the esterification product of 25 to 48 mole percent of a saturated aliphatic dicarboxylic acid selected from the group consisting of adipic acid, succinic acid, malonic acid, glutaric acid, sebacic acid, and azelaic acid; 40 to 50 mole percent of a glycol selected from the group consisting of ethylene glycol and neopentyl glycol; and 2to 35 mole percent of an aromatic carboxylic acid constituent selected from the group consisting of benzoic acid, paratertiary butyl benzoic acid, phthalic acid, phthalic anhydride or mixtures thereof; wherein the polyester has a hydroxyl number of not greater than 15 and an acid number of not greater than 10; C. 0.1-5.0% by weight, based on the weight of the binder, of an organic pigment dispersant consisting essentially of a material represented by the structure ##STR6## where B is a methyl methacrylate/2-ethylhexyl acrylate copolymeric segment having a number average molecular weight of about 3,000 to 10,000 and containing pigment in a pigment to binder weight ratio of about 100:100 to about 600:100.