Process for separating cyclic oligomeric dihydric phenol carbona

Details Process for separating cyclic oligomeric dihydric phenol carbona Process for separating cyclic oligomeric dihydric phenol carbona

1985-12-23

1987-08-11

Cintins, Ivars

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

B01D 1300

Patent

active

046860460

ABSTRACT:
A process for separating cyclic oligomeric dihydric phenol carbonate from aromatic polycarbonate which comprises contacting a solution comprising a major amount of aromatic polycarbonate and a minor amount of cyclic oligomer with a semi-permeable membrane, and recovering a second solution which has passed through the said membrane, said second solution enriched in cyclic oligomer.

REFERENCES:
patent: 3148141 (1986-09-01), Schonenberger

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