Copoly (carbonate/phosphonate) compositions

Details Copoly (carbonate/phosphonate) compositions Copoly (carbonate/phosphonate) compositions

1978-08-11

1980-09-16

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525462, 525465, 528174, 528196, 528202, 528204, 528219, C08G 6362

Patent

active

042231043

ABSTRACT:
Improved copoly(carbonate/phosphonate) compositions formed by reaction of a dihydric phenol, a carbonate precursor, and an organophosphorus dihalide are disclosed. The inherent viscosity and melting point of such compositions is increased by the presence of an effective amount of a chain branching agent, optionally in the additional presence of a chain terminating agent.

REFERENCES:
patent: 3094508 (1963-06-01), Butterworth et al.
patent: 3578634 (1971-05-01), Bialous
patent: 3766139 (1973-10-01), Bialous
patent: 3897392 (1975-07-01), Haupt et al.
patent: 4001183 (1977-01-01), Freitag

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