Process for preparing dihydroxydiphenyl chloroethylenes

Details Process for preparing dihydroxydiphenyl chloroethylenes Process for preparing dihydroxydiphenyl chloroethylenes

1978-04-17

1979-05-22

Morgenstern, Norman

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 3700

Patent

active

041560990

ABSTRACT:
The compound 1,1-dichloro-2,2-bis-(4-hydroxyphenyl)ethylene can be prepared by the reaction of 1,1-dichloro-2,2-diphenoxy ethylene and phenol in the presence of triflic acid. The formed dihydroxydiphenyl chloroethylene can be treated with a phosgenating agent to form polycarbonate resins which can be used in applications where flame retardancy is desired.

REFERENCES:
patent: 4073814 (1978-02-01), Kinson et al.
patent: 4097538 (1978-06-01), Factor et al.
patent: 4102934 (1978-07-01), Quinn
patent: 4105857 (1978-08-01), Campbell et al.
patent: 4107442 (1978-08-01), Quinn
patent: 4117018 (1978-09-01), Cleveland et al.

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