Method for preparing copolycarbonates from cyclic polycarbonate

Details Method for preparing copolycarbonates from cyclic polycarbonate Method for preparing copolycarbonates from cyclic polycarbonate

1986-09-15

1988-07-26

Pertilla, Theodore E.

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

Synthetic resins

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

525146, 525148, 525413, 525415, 525425, 525432, 525433, 525439, 525453, 525464, 525467, 525468, 525471, 525474, 525535, C08L 7104

Patent

active

047601175

ABSTRACT:
Copolycarbonates are prepared by ring-opening cyclic polycarbonate oligomers with various nucleophilic polymers. The latter include "living" anionic vinyl polymers; polymers such as polyphenylene ethers or hydroxyaryl-terminated polyimides which contain deprotonated hydroxy or carboxy groups; polymers containing neutral nucleophilic moieties, such as secondary amine-terminated polyimides, polyethersulfones and polyetherketones; and anionic polymers of ring-opened compounds such as cyclic polysiloxanes, lactams and lactones.

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Rokicki et al., Polymer Journal, 17, 509-516 (1985).

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