Title:
PRODUCTION OF CHELATING RESIN
Document Type and Number:
Japanese Patent JPH0710926
Kind Code:
A
Abstract:
PURPOSE: To provide a process for preparing a calcium salt form of chelating resin without requiring any post-treatment of waste water resulting from production thereof, whereby a liquid treated with the resulting resin is also close to neutrality.
CONSTITUTION: An aq. dispersion of an aminocarboxylic acid chelating resin is admixed with an alkali metal hydroxide to effect a reaction. A calcium compd. is then added to the resulting aq. dispersion to effect a reaction in the pH range of 3 to 10 in the aq. dispersion.
Inventors:
SATOU MASANOBU
HATANO ATSUSHI
AOI MASAHIRO
HATANO ATSUSHI
AOI MASAHIRO
Application Number:
JP15368593A
Publication Date:
January 13, 1995
Filing Date:
June 24, 1993
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
B01J45/00; C08F8/44; (IPC1-7): C08F8/44; B01J45/00
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)