METHOD OF PREPARING OF POLYCARBONATE COMPOSITION Russian patent published in 1995 - IPC

FIELD: shock-resistant composition materials. SUBSTANCE: polyalkyleneterephthalate, hydrogenated butadienenitrile or ethylenepropylene rubber were mixed at their ratio 100:(2-10):(1-5), respectively. Mixture is extruded at temperature not exceeding melting point of polyalkyleneterephthalate by 5-10 C. Mixture is cooled, milled, and prepared granules were mixed with polycarbonate granules, extruded, cooled and milled. Mass ratio of a mixture of polyalkyleneterephthalate, hydrogenated butadienenitrile and ethylenepropylene rubber is (10-50) wt.-%, and polycarbonate - the rest up to 100%. Granulated composition material is dried at 110-115 C for 4 h and processed by casting under pressure. EFFECT: improved method of composition preparing. 1 tbl