Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1977-02-04
1978-09-26
Gotts, Lewis
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
528202, 528219, C07C 3700
Patent
active
041170180
ABSTRACT:
A method is described for dehydrochlorinating 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane employing a refluxing dipolar aprotic solvent, such as dimethylformamide, containing a lithium halide catalyst to produce a crystalline product consisting essentially of 1,1-dichloro-2,2-bis(4-hydroxyphenyl) ethylene. The crystalline product can be isolated in substantially pure form and converted to a high impact, flame retardant polycarbonate.
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Porejko et al., Polimery, 13, (2), 55 (1968).
Sobicaewski et al., "On the Stability of Polycarbonates from Chlorobisphenols," Inst. for Plastics, Warsaw, 10/26/1967.
Dubkowski et al., "Synthesis of Polycarbonates by Interfacial Method,".
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Cleveland William K. S.
Orlando Charles M.
Webb Jimmy L.
Cohen Joseph T.
Eakin Molly C.
General Electric Company
Gotts Lewis
Teoli William A.
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