Title:
METHOD OF STORING AMINOTHIOL-MODIFIED SULFONIC ACID TYPE CATION-EXCHANGE RESIN
Document Type and Number:
WIPO Patent Application WO/2002/045855
Kind Code:
A1
Abstract:
A method by which a modified cation-exchange resin in which part of the sulfo groups have been modified with an aminothiol compound and which is used as a catalyst for bisphenol production is inhibited from decreasing in the degree of modification during storage. The method comprises placing the modified cation-exchange resin together with water in a container having a surface area of 0.5 m?2¿ or smaller per liter of the resin and sealing the container to store the resin in such a state that it is immersed in the water.
Inventors:
HAYASHI KOICHI (JP)
HAYASHI HIDETO (JP)
HAYASHI HIDETO (JP)
Application Number:
PCT/JP2001/010588
Publication Date:
June 13, 2002
Filing Date:
December 04, 2001
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
HAYASHI KOICHI (JP)
HAYASHI HIDETO (JP)
HAYASHI KOICHI (JP)
HAYASHI HIDETO (JP)
International Classes:
B01J31/10; B01J33/00; B01J39/18; B01J47/00; B01J47/14; (IPC1-7): B01J39/18; B01J47/14
Foreign References:
| JP2002001134A | 2002-01-08 | |||
| JP2002001133A | 2002-01-08 | |||
| JP2002001132A | 2002-01-08 |
Attorney, Agent or Firm:
Oguri, Shohei (ARK Mori Building 12-32 Akasaka 1-chome Minato-ku, Tokyo, JP)
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