MOLDING COMPOSITION Russian patent published in 1996 - IPC

FIELD: compositions for molding and casting. SUBSTANCE: method involves mixing 100 mas. p. polyethyleneterephthalate (specific viscosity in tricresol is 0.29-0.31), 10-17 mas. p. polymeric modifying agent (polyethylene, polypropylene, polyamide and others) and 25-45 mas. p. secondary polyethyleneterephthalate (specific viscosity in tricresol is 0.10-0.25). Mixture is extruded at 260 ± 10 C and granulated. Then samples were cast at 260 + 5 C for 8-12 s in molded form at 50-70 C. Composition is used in nonfilled casting structural materials based on polyethyleneterephthalate which can be used in electrical engineering, automobile industry. EFFECT: improved method of composition preparing. 1 tbl