COMPOSITION FOR MANUFACTURE OF INVESTMENT PATTERNS Russian patent published in 2002 - IPC

FIELD: investment casting of blades of gas-turbine engines and other parts of complicated configuration. SUBSTANCE: composition contains solid hydrocarbon and/or wax in amount of 0.1-80 wt.% and/or polymer with melting temperature up to 300 C in amount of 0.05-30 wt.%, and also thermopolymer resin in amount of up to 100 wt.%. Introduction of thermopolymer resin increases strength of composition and reduces linear shrinkage. EFFECT: increased technological effectiveness and usefulness of composition for wide nomenclature of patterns with higher geometric accuracy. 2 tbl