Preparation of polycarbonates comprising separating bisphenol, c

Details Preparation of polycarbonates comprising separating bisphenol, c Preparation of polycarbonates comprising separating bisphenol, c

1991-08-08

1993-02-23

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

526 67, 526 68, 528198, 528502, C08G 6424

Patent

active

051891395

ABSTRACT:
A process for the preparation of a polycarbonate comprising reacting a diaryl carbonate with a bisphenol to produce a polycarbonate and a phenol, regenerating the diaryl carbonate by reacting the phenol byproduct with a carbonyl halide, and optionally recycling the hydrogen halide using a metal Redox captive halogen swing reactor system.

REFERENCES:
patent: 4452968 (1984-06-01), Bolon et al.

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