Method of preparing an aromatic polycarbonate with phenolic chlo

Details Method of preparing an aromatic polycarbonate with phenolic chlo Method of preparing an aromatic polycarbonate with phenolic chlo

1987-09-18

1989-09-05

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, C08G 6362

Patent

active

048640115

ABSTRACT:
The invention relates to a method of preparing aromatic polycarbonate according to the two-phase interface process. The molecular weight is controlled by the addition of a chain stopper. The use of a phenolic chloroformate as a chain stopper leads to a polycarbonate having a low content of volatile constituents.

REFERENCES:
patent: 3475373 (1969-10-01), Jackson et al.
patent: 4269964 (1981-05-01), Freitag et al.
patent: 4330663 (1982-05-01), Rosenquist
patent: 4431793 (1984-02-01), Rosenquist
patent: 4446296 (1984-05-01), Rosenquist
patent: 4448953 (1984-05-01), Rosenquist et al.
patent: 4460752 (1984-07-01), Neuray et al.
patent: 4556704 (1985-12-01), Rosenquist
PPG Brochure--Phenyl Chloroformate, 1980, A-1352-540 2M 380A.

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