Epoxy resin based coating composition and method

摘要

An aqueous coating composition that is particularly adapted for repairing defects in coated metal articles comprises an aqueous dispersion having as its major ingredient an epoxy phosphate ester polymer, a cross-linking agent for the epoxy phosphate ester polymer which may be an aminoplast or phenoplast resin, and an effective quantity of an organic solvent having a solubility parameter in the range of 8.5-10 and being soluble in water at 20 DEG C. to the extent of less than 10%. The composition is desirably electrocoated upon the object at a temperature in the range of from 80 DEG to 120 DEG F. and preferably from about 90 DEG -100 DEG F.