Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
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.
Myers Harold D.
Tuinstra Hendrik E.
Anderson Harold D.
The Dow Chemical Company
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