Patent ID: 6447589
Filing Date: 2002-09-10
Classification: C08G,C09D,C23C,Y10S

Abstract:
A method of producing a water-base resin composition for rust-preventive coating which comprisesheating a mixture of a water-base resin, a solvent and a water-dispersible silica to a temperature of not less than 50Â° C. but not over the boiling temperature of the resin composition, and adding a silane coupling agent and/or a hydrolytic condensation product of the silane coupling agent to the mixture at the same temperature, said water-dispersible silica accounting for 10 to 500 g in each liter of said water-base resin composition, and said silane coupling agent and/or said hydrolytic condensation product of the silane coupling agent accounting for 0.02 to 20 g in each liter of said water-base resin composition.