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:
Apr. 05, 1983
Filed:
Sep. 14, 1981
Applicant:
Inventors:
Assignee:
Japan Atomic Energy Research Institute, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
428337 ; 427 35 ;
Abstract
A method of producing an ion exchange membrane comprising irradiating a polyethylene film not more than 150 .mu.m thick with ionizing radiation for a total dose of 1-30 Mrads in vacuum or in an inert gas, bringing the irradiated film into contact with a 15 to 50 wt % aqueous solution of acrylic acid and/or methacrylic acid at 15.degree. to 50.degree. C. to have acrylic acid and/or methacrylic acid graft copolymerized onto polyethylene, followed by treatment of the graft copolymer with a 2 to 10 wt % aqueous solution of potassium hydroxide.