Title:
METHOD FOR PREPARING ANIONIC MACROMOLECULAR COMPOUND EXHIBITING IMPROVED WATER SOLUBILITY
Document Type and Number:
WIPO Patent Application WO/2018/203548
Kind Code:
A1
Abstract:
The present invention provides a method for removing divalent metallic cations from a macromolecular compound having an anionic functional group and containing a divalent metallic cation, the method comprising: (1) suspending a macromolecular compound having an anionic functional group and containing a divalent metallic cation in a solution in which an electrolyte capable of releasing an alkali metallic ion is dissolved at a concentration that causes the macromolecular compound to salt out, and (2) carrying out an ion-exchange reaction on the resultant suspension so as to exchange divalent metallic cations contained in the macromolecular compound for said alkali metal ion.
Inventors:
SARUHASHI KOICHIRO (JP)
OKUNI YOKO (JP)
MORODOME KEISUKE (JP)
TAKEOKA JUN (JP)
OKUNI YOKO (JP)
MORODOME KEISUKE (JP)
TAKEOKA JUN (JP)
Application Number:
PCT/JP2018/017392
Publication Date:
November 08, 2018
Filing Date:
May 01, 2018
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
B01J39/18; B01J39/04; B01J49/00; C08B37/00
Foreign References:
| JP2017018893A | 2017-01-26 | |||
| JP2000070933A | 2000-03-07 | |||
| JP2009022901A | 2009-02-05 | |||
| JP2009507014A | 2009-02-19 | |||
| JP2003176371A | 2003-06-24 | |||
| JP2009165985A | 2009-07-30 |
Attorney, Agent or Firm:
TAKASHIMA, Hajime et al. (JP)
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