Title:
【発明の名称】ビスフェノールAの製造方法
Document Type and Number:
Japanese Patent JPH07103058
Kind Code:
B2
Abstract:
This invention is a process for the preparation of bisphenol A from acetone and phenol. By this invention, the formation of by-products is extremely decreased and post treatment steps can be simplified. This invention involves the following steps. (1) One mole of acetone is reacted with 4 to 12 moles of phenol in the presence of a sulfonic acid type cation exchange resin catalyst modified with a mercapto group-containing compound such as mercaptoethylamine to convert 20 to 60% of acetone, and (2) the reaction mixture containing unreacted acetone is successively reacted in the presence of the hydrochloric acid catalyst. The formation of by-products such as 2-(2-hydroxyphenyl)-2-(4-hydroxyphenyl)propane, Dianin's compound and the like is remarkably reduced by the process of this invention.
Inventors:
Shigeru Iimuro
Takashi Kitamura
Yoshio Morimoto
Takashi Kitamura
Yoshio Morimoto
Application Number:
JP30594287A
Publication Date:
November 08, 1995
Filing Date:
December 04, 1987
Export Citation:
Assignee:
Mitsui Toatsu Chemical Co., Ltd.
International Classes:
B01J27/10; B01J31/10; C07B61/00; C07C27/00; C07C37/20; C07C39/16; C07C67/00; (IPC1-7): C07C39/16; C07C37/20