THIOL COMPOUND, MODIFIED ION EXCHANGE RESIN, AND METHOD FOR PREPARING BISPHENOL

摘要

PROBLEM TO BE SOLVED: To provide a novel thiol compound, a modified ion exchange resin catalyst prepared by using the novel thiol compound having higher bisphenol selectivity than that of a prior art ion exchange resin catalyst, a method for preparing the same, and a method for preparing a bisphenol by causing a phenol and a ketone to react with each other in the presence of the modified ion exchange resin catalyst thus prepared.

SOLUTION: The thiol compound is represented by formula 1 wherein P represents a phosphorus atom; S represents a sulfur atom; H represents a hydrogen atom; R1represents a 1-6C alkylene group which may comprise a phenylene group in a part thereof; R2represents a 1-3C alkylene group; R3and R4each independently represents a 5-10C aryl group; and X-represents an anion. The modified ion exchange resin is prepared by modifying an ion exchange resin using at least one of the thiol compounds represented by formula 1. The catalyst for producing a bisphenol comprises the modified ion exchange resin.

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