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:
Mar. 20, 1984
Filed:
Dec. 21, 1982
Thomas C Bissot, Newark, DE (US);
Walter G Grot, Chadds Ford, PA (US);
Paul R Resnick, Wilmington, DE (US);
E. I. Du Pont de Nemours & Co., Wilmington, DE (US);
Abstract
An ion exchange membrane which comprises a layer of fluorinated polymer which has carboxylic functional groups, a second layer of fluorinated polymer which has sulfonic or carboxylic functional groups at a surface layer, and a web of support material therein, and which has channels in the membrane which extend from window areas of the membrane to blind areas of the membrane occluded by members of the support material, is described. Precursor membrane which contains both reinforcement members and sacrificial members, and from which the ion exchange membrane is made, is also described. The ion exchange membrane can be used to separate the compartments of a chloralkali cell, and such a cell operates at low voltage, high current efficiency, and low power consumption.