MODEL COMPOSITION FOR MELTABLE MODELS Russian patent published in 1997 - IPC

FIELD: casting by using of meltable models. SUBSTANCE: model composition for meltable models on the base of paraffin and brown coal wax additionally comprises polypropylene, asphalt of butane deasphalting and colophony, ratio of components is as follows, mas.%: paraffin, 45-45; brown coal wax, 21-22; polypropylene, 0.8-1.5; asphalt of butane deasphalting, 12-13; colophony, 17.5-20.2. EFFECT: improved quality. 4 tbl