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Precipitative polymerization for polycarbonate: A simultaneous reaction–precipitation technique
Author(s) -
Sikdar S. K.
Publication year - 1983
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1983.070280214
Subject(s) - polycarbonate , polymerization , precipitation , precipitation polymerization , phosgene , aqueous solution , polymer chemistry , polymer , chemical engineering , phase (matter) , materials science , aqueous two phase system , chemistry , radical polymerization , organic chemistry , physics , meteorology , engineering
A novel phenomenon, termed precipitative polymerization, is described. In it, the BPA—phosgene reaction is conducted with simultaneous precipitation of polycarbonate granules. Very low organic‐to‐aqueous phase ratio and high pH medium are primarily required to cause this in‐situ precipitation.