Method for the continuous preparation of aromatic polycarbonate

Details Method for the continuous preparation of aromatic polycarbonate Method for the continuous preparation of aromatic polycarbonate

1991-07-29

1993-01-26

Anderson, Harold D.

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

Synthetic resins

From reactant having a halogen atom or oxygen single bonded...

528370, C08G 6420

Patent

active

051823616

ABSTRACT:
The invention relates to a method of preparing aromatic polycarbonate having a high molecular weight by boundary face condensation of carbonate oligomer in the presence of an aromatic monohydroxy compound as a chain stopper, base, water and organic solvent at a temperature of at most 70.degree. C., in which the components, among which the chain stopper, are mixed in static mixers to form a fine dispersion, reacting these in a residence zone with plug flow and repeating these steps at least once.

REFERENCES:
patent: 4743676 (1988-05-01), Silva et al.
patent: 4959456 (1990-09-01), Ashida et al.
patent: 4973664 (1990-11-01), Silva

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