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Method of producing bisphenols using such a modified acidic ion exchange resin catalyst
Method of producing bisphenols using such a modified acidic ion exchange resin catalyst
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机译:使用这种改性的酸性离子交换树脂催化剂生产双酚的方法
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摘要
PROBLEM TO BE SOLVED: To obtain an ion-exchange resin catalyst which has a higher selectivity to bisphenols and a longer life time as compared to a conventional ion-exchange resin as a catalyst for preparing bisphenols from phenol compounds and ketones, and to provide a method for producing the ion-exchange resin catalyst.;SOLUTION: In the method for preparing bisphenols, the modified acidic ion-exchange resin in which at least one kind of cationic compound selected from the following (a), (b), (c) and (d) ionically binds to an acidic functional group, is used as a catalyst: (a) a quaternary phosphonium ion, (b) a quaternary ammonium ion, (c) a bis(phosphoranylidene) ammonium ion and (d) an N-substituted nitrogen-containing heterocyclic cation.;COPYRIGHT: (C)2005,JPO&NCIPI
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