Polycarbonate processes with supercritical carbon dioxide

Details Polycarbonate processes with supercritical carbon dioxide Polycarbonate processes with supercritical carbon dioxide

1996-09-03

1997-12-16

Mosley, Terressa

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

Synthetic resins

Treating polymer containing material or treating a solid...

528196, 528198, 528483, 528491, 528497, C08F 600

Patent

active

056986653

ABSTRACT:
A process for the preparation of polycarbonates which comprises the reaction of a bisphenol, an arylcarbonate and a catalyst, which reaction is accomplished by heating said bisphenol, said arylcarbonate and said catalyst, in the presence of supercritical carbon dioxide, and subsequently extracting byproducts with supercritical carbon dioxide.

REFERENCES:
patent: 3590000 (1971-06-01), Palermiti et al.
patent: 4797339 (1989-01-01), Marayama et al.
patent: 4983488 (1991-01-01), Tan et al.
patent: 4996127 (1991-02-01), Hasegawa et al.
patent: 5206108 (1993-04-01), Felder et al.
patent: 5229486 (1993-07-01), Paul et al.

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