Fluorinated diphenols and method for their preparation

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

1982-07-26

1984-08-21

Lone, Werren B.

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

Organic compounds

Oxygen containing

568727, 568775, C07C 3916

Patent

active

044671210

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 fluorinated 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: 2734088 (1956-02-01), Knowles et al.
patent: 3340310 (1967-09-01), Gilbert et al.
patent: 3388097 (1968-06-01), Cramer
patent: 4358624 (1982-11-01), Mark et al.
patent: 4365098 (1982-12-01), Mark et al.
"Gevaert-Photo Producten", French Patent Abstract, Pharmaceuticals Photographic' French, 5/21/65.
Korshal et al., "Chem. Abstract", vol. 64, (1966), pp. 67663 and 8321h.

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