High heat distortion resistant segment ester polycarbonates

Details High heat distortion resistant segment ester polycarbonates High heat distortion resistant segment ester polycarbonates

C - Chemistry, Metallurgy

08

G

402/172, 400/201

C08G 63/64 (2006.01) C08L 67/00 (2006.01) C08L 69/00 (2006.01)

Patent

CA 1205944

8CL-3264 HIGH HEAT DISTORTION RESISTANT SEGMENT-ESTER POLYCARBONATES Abstract of Disclosure Segment-ester polycarbonates have improved resistance to high heat distortion when portions of the polymer contain units derived from 4,4'- cyclohexylidenediphenol and derivatives thereof. Preferred high heat distortion segment-ester poly- carbonates include the copolyestercarbonate with segments derived from isophthalic acid and 4,4'- cyclohexylidenediphenol and/or terephthalic acid and 4,4'-cyclohexylidenediphenol. Films made of the segment-ester copolycarbonates have improved resistance to high heat distortion.

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