Kenneth W Fritz

US Patent:

49405616, Jul 10, 1990

Filed:

Feb 6, 1989

Appl. No.:

7/306107

Inventors:

Kenneth E. Fritz - Richmond VA

International Classification:

B29C 4108

US Classification:

264225

Abstract:

A method of forming a coating useful for forming casting molds including agitating a quantity of polyester resin and admixing into the resin a quantity of aluminum powder, storing the mixture for 12 to 24 hours, introducing a catalyst into the mixture and spraying the mixture onto an object defining a mold cavity of a casting mold. The atomized aluminum powder should have a weight ratio of 10 to 50 percent of the resin and should have a ration of 4 times 200 mesh/ 1 times 400 mesh+2 times 200 mesh/1 times 400 mesh.