Preparation of bisphenols
AssigneeShell Oil Company
InventorsJames D. McClure, Friedrich E. Neumann
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Abstract
A process and catalyst for the preparation of bisphenols is disclosed. The process involves contacting a phenol with a ketone in the presence of a solid perfluorinated polymer catalyst having pendent sulfonic acid groups which are partially neutralized with a mercaptoamine.
Claims7
A process for the production of bisphenols which comprises contacting a phenol and ketone in the liquid phase at a temperature of between about 20.degree. and about 150.degree. C. with a solid perfluorinated polymer catalyst having pendent sulfonic acid groups modified by the neutralization of between about 5 and about 50 percent of the sulfonic acid groups with a C.sub.1 -C.sub.4 alkyl mercaptoamine wherein said solid perfluorinated polymer catalyst prior to partial neutralization contains a repeating structure selected from the group consisting of:
- ##STR6## where n is 0, 1 or 2;
- R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms;
- and X is selected from the group consisting of:
- [O(CF.sub.2).sub.m ] , [OCF.sub.2 CFY] or [OCFYCF.sub.2 [
- where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and the trifluoromethyl radical.
Dependencies are inferred from the claim text.