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Title:
METHOD OF INTRODUCING CARBOXYL GROUPS INTO CROSSLINKED POLYSTYRENE
Document Type and Number:
Japanese Patent JPS57137302
Kind Code:
A
Abstract:

PURPOSE: A crosslinked polystyrene in which alkylene glycol links to benzyl carbons is oxidatively cleaved at ether linkages to produce at a high reaction rate the titled carboxylic acid derivative used as a weak-acid ion-exchange resin.

CONSTITUTION: A crosslinked polystyrene in which an alkylene glycol of formulaI(R is lower alkylene; n is positive integer; X is H, residue of ether or ester, or group in crosslinked polystyrene of formula II) or formula III (Y is crown ether) or its derivative or a crown ether links to benzyl carbons is oxidized with oxygen to cleave the ether linkages and convert the benzyl carbons into carboxyl groups to give the objective carboxylate crosslinked polystyrene.


Inventors:
Yanagida, Shozo
Fujita, Hiroshi
Application Number:
JP1981000023751
Publication Date:
August 24, 1982
Filing Date:
February 20, 1981
Export Citation:
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Assignee:
MITSUBISHI CHEM IND LTD
International Classes:
C08F8/00; C07C51/00; C07C51/23; C07C67/00; C08F8/06; (IPC1-7): C08F8/06



 
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