Fluorinated diphenols and method for their preparation

Details Fluorinated diphenols and method for their preparation Fluorinated diphenols and method for their preparation

1980-12-31

1982-12-21

Lone, Werren B.

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

Organic compounds

Oxygen containing

568727, 568775, C07C 3916

Patent

active

043650988

ABSTRACT:
Fluorinated bisphenols having a fluorinated alkyl group and a hydrogen atom upon the methylene carbon atom are prepared at atmospheric pressure or at low pressures from a phenol reactant and a fluorinated aldehyde compound in the presence of gaseous hydrogen chloride or gaseous hydrogen bromide catalyst. The fluroinated bisphenols having the fluorinated alkyl group and a hydrogen atom upon the methylene carbon atom are produced in excellent yields and are used for making flame-retardant polycarbonates and polyester-carbonate copolymers.

REFERENCES:
patent: 2435014 (1948-01-01), Niederl
patent: 3028365 (1962-04-01), Schnell et al.
patent: 3207794 (1965-09-01), Haines
patent: 3340310 (1967-09-01), Gilbert et al.
patent: 3388097 (1968-06-01), Cramer
patent: 4117018 (1978-09-01), Ceveland et al.
patent: 4182838 (1980-01-01), Mark et al.
Cevaert-Photo Peoducten, "French Patent Abstract, Pharmaceuticals, Photographic", French 21/5/65, Indian 22 & 29,5,65, vol. 5, No. 25, FR.84976/1,285,486.
Korshak et al., "Chem. Abstract", vol. 64, (1966), 6766e, p. 8321h.

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