Catalytic/co-catalytic production of bisphenol A

Details Catalytic/co-catalytic production of bisphenol A Catalytic/co-catalytic production of bisphenol A

1991-02-28

1992-04-14

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568728, C07C 3720, C07C 3916

Patent

active

051050277

ABSTRACT:
Bisphenol A is prepared by condensing a stoichiometric excess of phenol with acetone in the presence of (a) a catalytically effective amount of an acid catalyst, e.g., benzenesulfonic acid, and (b) a co-catalytically effective amount of a functional polymer characteristically having the formula: ##STR1## in which m is 0 or 1, n is 0 or 1, p is 0 or 1, R.sup.1, R.sup.2 and R.sup.3, which may be identical or different, are each a hydrogen atom, a C.sub.1 -C.sub.6 alkyl radical or a phenyl radical optionally substituted by 1 or 2 hydroxyl or C.sub.1 -C.sub.4 alkoxy groups, and R.sup.4 is a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.6 alkyl radical, or one of the groups: --CHO, --NO.sub.2, --CO.sub.2 H, --CO.sub.2 R.sup.5 wherein R.sup.5 is a C.sub.1 -C.sub.4 alkyl radical, or ##STR2## is the residue of a chloromethylated resin.

REFERENCES:
patent: 4052466 (1977-10-01), Sun
patent: 4053522 (1977-10-01), McClure et al.
patent: 4317944 (1982-03-01), Davis
patent: 4387251 (1983-06-01), Meyer et al.
patent: 4918245 (1990-04-01), Iimuro et al.

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