The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 1981
Filed:
Jul. 05, 1979
Applicant:
Inventors:
Kunio Kihara, Ami, JP;
Hideo Toda, Ami, JP;
Eiki Yasukawa, Tsuchiura, JP;
Toshiaki Ishibashi, Ami, JP;
Taketoshi Tokita, Tsuchiura, JP;
Assignee:
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
521 27 ; 521 28 ;
Abstract
In the production of a heterogeneous ion exchange membrane in which an ion exchange resin fine powder is dispersed in a thermoplastic resin, a silane-modified polyolefin resin and ion exchange resin fine powder are kneaded, extruded to form a membrane and then subjected to a treatment with hot water, thus obtaining an ion exchange membrane having a high ion transport number in a high ion concentration and a low specific resistance in an aqueous solution of a polyvalent ion salt, which is well balanced.