Process for preparing ester carbonate copolymers

Details Process for preparing ester carbonate copolymers Process for preparing ester carbonate copolymers

1982-05-17

1983-06-14

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 26, 528 43, 528125, 528126, 528128, 528172, 528173, 528179, 528182, 528183, 528185, 528190, 528191, 528193, 528194, 528196, 528198, 528199, 528201, 528202, 528203, 528274, 528298, 528306, 528307, 528308, C08G 6364

Patent

active

043884555

ABSTRACT:
Ordered ester/carbonate copolymers having improved properties at higher solids are provided by (1) contacting a dihydric organic compound such as bisphenol-A with a diacid halide such as terephthaloyl chloride and a carbonate precursor such as phosgene under conditions sufficient to form an ester/carbonate oligomer and (2) contacting the oligomer with additional carbonate precursor to produce the desired ordered ester/carbonate copolymer.

REFERENCES:
patent: 4059565 (1977-11-01), Yoshizaki et al.
patent: 4105633 (1978-08-01), Swart et al.
patent: 4122112 (1978-10-01), Koda et al.
patent: 4238597 (1980-12-01), Markezich et al.
patent: 4260731 (1981-04-01), Mori et al.
patent: 4278787 (1981-07-01), Swart et al.
patent: 4310652 (1982-01-01), DeBona et al.
patent: 4311822 (1982-01-01), Dege et al.
patent: 4330662 (1982-05-01), Bales

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