Title:
METHOD FOR PREPARING ACIDIC CATION EXCHANGE RESIN FIXED BED FOR PRODUCING BISPHENOLS
Document Type and Number:
WIPO Patent Application WO/2001/074488
Kind Code:
A1
Abstract:
A method for preparing an acidic cation exchange resin fixed bed for producing bisphenols, wherein an acidic cation exchange resin is partially neutralized homogeneously with a nitrogen-containing sulfur compound, characterized in that it comprises charging an acidic cation exchange resin into a reactor to form a fixed bed, washing the fixed bed with water prior to the start of the reaction, dissolving the nitrogen-containing sulfur compound in the wash water from the reactor, and charging the resultant aqueous solution to the reactor and circulating the solution. The method can be employed for preparing an acidic cation exchange resin fixed bed for producing bisphenols without the addition of an acid.
Inventors:
SARUWATARI TETSUYA (JP)
IWAHARA MASAHIRO (JP)
IWAHARA MASAHIRO (JP)
Application Number:
PCT/JP2001/002588
Publication Date:
October 11, 2001
Filing Date:
March 28, 2001
Export Citation:
Assignee:
IDEMITSU PETROCHEMICAL CO (JP)
SARUWATARI TETSUYA (JP)
IWAHARA MASAHIRO (JP)
SARUWATARI TETSUYA (JP)
IWAHARA MASAHIRO (JP)
International Classes:
B01J31/10; B01J39/04; B01J39/18; B01J49/00; C07B61/00; C07C37/48; (IPC1-7): B01J49/00; C07C37/20; C07C39/16
Foreign References:
| JPH0840961A | 1996-02-13 | |||
| GB1539463A | 1979-01-31 | |||
| JPH06304479A | 1994-11-01 | |||
| JPH06296871A | 1994-10-25 |
Attorney, Agent or Firm:
Ohtani, Tamotsu (Toranomon 3-chome Minato-ku, Tokyo, JP)
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