Title:
PRODUCTION OF BISPHENOL A
Document Type and Number:
Japanese Patent JP3834837
Kind Code:
B2
Abstract:
PURPOSE: To maintain catalyst performances for a long time and produce bisphenol A in high yield and selectivity by adding a thiol compound to a reactional system of acetone with phenol and reacting both in the presence of a specific catalyst.
CONSTITUTION: A catalyst comprising a modified resin containing both modified sulfonic acid type cation exchange groups modified with (A) an amine compound containing sulfur [e.g. 2-mercaptoethylamine (salt) or 2,2-dimethylthiazolidine (salt)] and unmodified sulfonic acid type cation exchange groups is used and (B) a thiol compound such as alkyl mercaptans or thiophenols is added to a reactional system of (C) acetone with (D) phenol to react both.
Inventors:
Susumu Yamamoto
Asaoka Sachio
Asaoka Sachio
Application Number:
JP15850795A
Publication Date:
October 18, 2006
Filing Date:
June 01, 1995
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
B01J31/10; C07C37/20; C07B61/00; C07C37/88; C07C39/16; (IPC1-7): C07C39/16; B01J31/10; C07C37/20; C07C37/88; //C07B61/00
Domestic Patent References:
| JP58079942A | ||||
| JP57075146A | ||||
| JP6304479A | ||||
| JP60137440A |
Foreign References:
| US5414152 |
Attorney, Agent or Firm:
Hasegawa Soji