Compositions of siloxane polycarbonate block copolymers and high heat polycarbonates
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0633292A1
公开(公告)日:1995-01-11
A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula:
or
where R¹, R², Y, D, A, X, A' and E are as defined herein, and high heat polycarbonates containing recurring or repeating polycarbonate units of the formula:
wherein Z is -O-, -N(R³)- or a mixture thereof and R³ is selected from hydrogen, hydrocarbyl and halogen-substituted hydrocarbyl.
一种热塑性组合物,由硅氧烷聚碳酸酯嵌段共聚物组成,其中共聚物的聚硅氧烷段的化学式为
或
式中 R¹、R²、Y、D、A、X、A'和 E 如本文所定义,以及含有式中的递归或重复聚碳酸酯单元的高热聚碳酸酯:
其中 Z 为-O-、-N(R³)- 或其混合物,R³ 选自氢、烃基和卤素取代的烃基。