Title:
METHOD OF PREPARING MODIFIED CATALYST FOR BISPHENOL A PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2005/021155
Kind Code:
A1
Abstract:
A method of preparing a modified catalyst for bisphenol A production by partially modifying a strongly acid ion-exchange resin with a sulfurized amine compound. It comprises packing a strongly acid ion-exchange resin into a fixed-bed reactor, introducing therein an aqueous acid solution, and further introducing a sulfurized amine compound in such an amount that its concentration in the aqueous acid solution reaches equilibrium to thereby modify the strongly acid ion-exchange resin. By the method, the strongly acid ion-exchange resin is evenly modified without breaking, and a modified catalyst for bisphenol A production which has excellent catalytic performance can be prepared.
Inventors:
IWAHARA MASAHIRO (JP)
MASE JUN (JP)
MASUDA SHUICHI (JP)
SATO HIDEKI (JP)
MASE JUN (JP)
MASUDA SHUICHI (JP)
SATO HIDEKI (JP)
Application Number:
PCT/JP2004/012861
Publication Date:
March 10, 2005
Filing Date:
August 30, 2004
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
IWAHARA MASAHIRO (JP)
MASE JUN (JP)
MASUDA SHUICHI (JP)
SATO HIDEKI (JP)
IWAHARA MASAHIRO (JP)
MASE JUN (JP)
MASUDA SHUICHI (JP)
SATO HIDEKI (JP)
International Classes:
B01J31/08; B01J31/10; (IPC1-7): B01J37/00; B01J31/10; C07B61/00; C07C37/20; C07C39/16
Foreign References:
| JPS5314680A | 1978-02-09 | |||
| JP2001348350A | 2001-12-18 | |||
| JP2001286770A | 2001-10-16 |
Attorney, Agent or Firm:
Ohtani, Tamotsu (Bridgestone Toranomon Bldg. 6F. 25-2,
Toranomon 3-chom, Minato-ku Tokyo, JP)
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