Title:
REMOVAL OF ALKALI METAL ION FROM HIGH-MOLECULAR EPOXY POLYMER SOLUTION
Document Type and Number:
Japanese Patent JPH05209039
Kind Code:
A
Abstract:
PURPOSE:To remove efficiently an alkali metal catalyst indispensable to the synthesis of a high-molecular epoxy polymer from the polymer solution. CONSTITUTION:A nonaqueous solution type cation exchange resin and/or) alumina as an ion adsorbent are added to a high-molecular epoxy polymer containing impurities such as alkali metal ions, and the resulting mixture is agitated and filtered to remove the alkali metal ions from the epoxy polymer.
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Inventors:
KOBAYASHI KAZUHITO
SHIBATA KATSUJI
ARAI MASAMI
SHIBATA KATSUJI
ARAI MASAMI
Application Number:
JP1443392A
Publication Date:
August 20, 1993
Filing Date:
January 30, 1992
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
B01D15/00; B01D15/04; C08G59/00; C08G59/18; C08J3/00; (IPC1-7): B01D15/00; B01D15/04; C08G59/00
Domestic Patent References:
| JPH05105740A | 1993-04-27 | |||
| JPH05112661A | 1993-05-07 |
Attorney, Agent or Firm:
Kunihiko Wakabayashi