Method for making aromatic bisphenols

Details Method for making aromatic bisphenols Method for making aromatic bisphenols

1988-10-26

1990-06-05

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568728, C07C 3917, C07C 3912, C07C 3720

Patent

active

049315943

ABSTRACT:
A method for making aromatic bisphenols such as 9,9-bis-(4-hydroxyphenyl)fluorene by reacting an aromatic ketone, for example a diaryl ketone or diaryl diketone, with a phenol in the present of an insoluble strongly acidic cationic ion exchange resin as an acidic condensation catalyst, which latter may be used in the presence of a co-catalyst containing sulfur.

REFERENCES:
patent: 4365099 (1982-12-01), Faler
patent: 4400555 (1983-08-01), Mendiratta
patent: 4590303 (1985-05-01), Mondiratta

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