Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1984-08-06
1985-08-13
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528199, 528200, 528204, C08G 6362
Patent
active
045351430
ABSTRACT:
The present invention is directed to a continuous process for the preparation of copolycarbonates of sulfonyl diphenol (SDP) containing at least about 15, preferably about 15 to about 80 percent by weight of SDP and characterized in the particular system catalyzing the process reaction. The invention thus entails improvements and modifications to the known interfacial polycondensation process rendering it applicable to the preparation of copolycarbonates containing a high level of SDP comprising a combination of catalysts namely a phase transfer catalyst and a condensation catalyst.
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Interfacial Synthesis vol. III, Recent Advances, Carraher, Jr. & Preston, Marcel Dekker Inc., New York, NY.
Phase Transfer Catalysis, Principles and Techniques, Starks, C. M. and _Liotta.
Krishnan Sivaram
Price Ronald L.
Witman Mark W.
Harsh Gene
Lee Lester L.
Mobay Chemical Corporation
Pope Lawrence S.
Preis Aron
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