Thermoplastic copolymers of polysiloxane polycarbonate and polye

Details Thermoplastic copolymers of polysiloxane polycarbonate and polye Thermoplastic copolymers of polysiloxane polycarbonate and polye

1976-04-12

1976-11-30

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08L 8300

Patent

active

039949885

ABSTRACT:
There is disclosed thermoplastic silicone copolymers having polyarylcarbonate and polyarylester constituents covalently bound to a polydiorganosiloxane constituent. The copolymer is produced by reacting a dihydric phenol with a difunctional polydiorgano siloxane, an organo-diacid halide or with alkyl or aryl ester of an organo-diacid, and with phosgene or other suitable carbonate precursors. The reactions are carried out in suitable organic solvents that solubilize the reagents and the resulting copolymer, in the presence of conventional catalysts. In another embodiment a solvent system is eliminated and the condensation polymerization is carried out in a molten system.

REFERENCES:
patent: 2999835 (1961-09-01), Goldberg
patent: 3207814 (1965-09-01), Goldberg
patent: 3379790 (1968-04-01), Krauss et al.
patent: 3701815 (1972-10-01), Matzner et al.
patent: 3832419 (1974-08-01), Merritt

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