Mobil Oil Corporation

The Valspar Corporation

Kenneth G Davis

George B Due

Albert H Lund

Phillip C Martino

A liquid coating composition particularly adapted for coating cans. The composition comprises a curable, hydroxyl functional block copolymer which is the reaction product of a 1,2-epoxy resin and a carboxyl functional polyester resin, and a hydroxyl-reactive crosslinking agent providing desirably at least 2.0 equivalents of hydroxyl reactive functional groups per hydroxyl equivalent of the block copolymer. The block copolymer desirably has a number average molecular weight in the range of 7000 to 30,000. Also disclosed is a method for formulating a coating composition utilizing craze resistance testing over an aging period to enable the choice of the quantity of curing agent to be used in the coating composition.

Coating compositions containing high molecular weight polyester-epoxy

A water-based coating composition is provided that is suitable for food packaging, such as in coating metal containers. The composition comprises a water-dilutable resin, solubilized with ammonia or an amine, dissolved in water or mixtures of water and an alcohol or an ether alcohol into which is dispersed polyvinyl chloride.

Water-based coating composition containing polyvinyl chloride

A resin is provided which is the adduct of a bisphenol and a diglycidyl ether of a bisphenol reacted with an anhydride to an Acid No. of 35 to 150. This resin is solubilized with a volatile amine, ammonia, or NH.sub.4 OH in a solvent mixture of water, alkoxyethanols, alcohols, and alkyl ethers of diethylene glycol and combined with an aminoplast to produce a coating composition utilizable to coat metal surfaces that will contact a food or beverage, such as in metal packaging containers.

Growing community of inventors

Pittsburgh, PA, United States of America

Kenneth G Davis