Process for producing polycarbonate resin with tertiary alryl ph

Details Process for producing polycarbonate resin with tertiary alryl ph Process for producing polycarbonate resin with tertiary alryl ph

1987-05-29

1988-10-04

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, 528201, C08G 6362

Patent

active

047757396

ABSTRACT:
A process for producing a polycarbonate resin having a viscosity-average molecular weight of from 9,000 to 50,000 by reacting at least one bisphenol compound with phosgene or a carbonate, characterized in that a phenol compound having the formula: ##STR1## wherein R is an alkyl group having from 5 to 7 carbon atoms, and R is located at the ortho- or para-position relative to the OH group, is used as a molecular weight modifier.

REFERENCES:
patent: 3240756 (1966-03-01), Deanin et al.
patent: 4269964 (1981-05-01), Freitag et al.
patent: 4699971 (1987-10-01), Mark

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