Preparation of polycarbonate from specific crude bisphenols

Details Preparation of polycarbonate from specific crude bisphenols Preparation of polycarbonate from specific crude bisphenols

1980-07-09

1983-02-01

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528198, 528204, C08G 6362

Patent

active

043716911

ABSTRACT:
This disclosure relates to the processes for producing polycarbonates from specific crude bisphenols. The bisphenols are characterized in that immediately after their preparation they are subjected to (i) separation, of excess phenols and low-boiling substances, by means of an evaporator, and (ii) removal of monophenols by desorption.
The invention also relates to high-molecular weight aromatic polycarbonates made of crude bisphenols and their use in a variety of applications.

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Hackh's Chemical Dictionary, 4th Ed., pp. 27, 250, 548 & 117.

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