COMPOUND FOR MANUFACTURE OF INVESTMENT PATTERNS Russian patent published in 1996 - IPC

FIELD: foundry, and namely, production of patterns in the process of investment casting. SUBSTANCE: pattern compound uses, mass percent: ceresin wax - 15.0 to 20.0; polyethylene wax - 15.0 to 20.0; copolymer of ethylene with vinyl acetate (content of vinyl acetate in copolymer - 5 to 12 mass percent) - 1 to 5; water - 2.0 to 5.0; paraffin - the rest. Combined content of copolymer and water at a preset relation of are components of pattern compound provides for manufacture of pattern of a high quality (high precision of dimensions, surface finish, stable geometry). EFFECT: manufacture of complex thin-walled patterns with a glossy surface and high geometry. 2 tbl