Process for preparing dihydroxydiphenyl chloroethylenes

Details Process for preparing dihydroxydiphenyl chloroethylenes Process for preparing dihydroxydiphenyl chloroethylenes

1977-08-18

1978-08-15

Morgenstern, Norman

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

Organic compounds

Oxygen containing

260613R, C07C 3700

Patent

active

041074424

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 BF.sub.3 gas and methylene chloride. 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.

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