High heat distortion resistant segment ester polycarbonates

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

1981-12-21

1983-04-19

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525444, 525466, 528176, 528191, 528193, 528371, 528372, 528194, 528370, C08G 6364

Patent

active

043806120

ABSTRACT:
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 polycarbonates 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.

REFERENCES:
patent: 3220977 (1965-11-01), Jackson, Jr. et al.
patent: 3395186 (1968-07-01), Matzner et al.
patent: 3408407 (1968-10-01), Cotter et al.
patent: 4156069 (1979-05-01), Prevorsek et al.
patent: 4238597 (1980-12-01), Markezich et al.

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