Title:
METHOD OF PREPARING MODIFIED CATALYST FOR BISPHENOL A PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2005/042154
Kind Code:
A1
Abstract:
A method of preparing a modified catalyst for bisphenol A production that is free from damaging of strongly acidic ion exchange resin, realizes uniform modification of strongly acidic ion exchange resin and excels in catalytic performance. There is provided a method of preparing a modified catalyst for bisphenol A production resulting from partial modification of a strongly acidic ion exchange resin with a sulfurated amine compound, comprising charging a fixed bed reactor with a strongly acidic ion exchange resin and effecting injection of an aqueous solution containing an acid and a sulfurated amine compound therein and circulation therethrough so as to modify the strongly acidic ion exchange resin, wherein after the injection of the aqueous solution or while circulating the same or while temporarily stopping the circulation, an inert gas is bubbled from an underpart of the fixed bed reactor to thereby agitate the strongly acidic ion exchange resin.
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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/JP2004/015700
Publication Date:
May 12, 2005
Filing Date:
October 22, 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:
B01J31/00; B01J31/10; C07B61/00; C07C37/20; C07C39/16; (IPC1-7): B01J37/00; B01J31/10; C07B61/00; C07C37/20; C07C39/16
Foreign References:
| JPS5314680A | 1978-02-09 | |||
| JP2000254523A | 2000-09-19 | |||
| 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 01, JP)
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