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:
Jan. 30, 1979
Filed:
Jul. 13, 1977
Applicant:
Inventors:
Sueo Machi, Takasaki, JP;
Takanobu Sugo, Gunma, JP;
Akio Sugishita, Takasaki, JP;
Sakunobu Kanai, Takasaki, JP;
Hiroshi Fujiwara, Ohmiya, JP;
Assignees:
Japan Atomic Energy Research Institute, Tokyo, JP;
Maruzen Oil Company Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
20415916 ; 20415917 ; 2608 / ; 260884 ; 260885 ; 260886 ; 521 27 ; 521 31 ; 260879 ;
Abstract
A graft copolymer membrane prepared by co-grafting a mixture of monomers consisting essentially of acyloxystyrene and/or hydroxystyrene, a polyene compound and at least one member selected from the group consisting of acrylic acid, methacrylic acid and esters of these acids onto a hydrocarbon type of fluorine-containing type polymer by means of ionizing radiation exhibits improved mechanical strength and reduced electrical resistance and provides an excellent ion-exchange membrane.