Title: Ion-exchange structures of copolymer blends useful in electrolytic cells

Abstract: Ion-exchange films, membranes and laminar structures incorporating a layer of a blend of a first fluorinated polymer which contains sulfonyl groups in ionizable form and a second fluorinated polymer which contains carboxylic acid functional groups, when used to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency and low power consumption. They can be made by synthesis of precursor polymers in melt-fabricable form, blending, fabrication of the film, membrane or laminar structure, and hydrolysis of the functional groups to ionizable form, such as the free acid form or alkali metal salt thereof.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Molnar, Charles J. (Wilmington, DE, US)
Price, Edward H. (Kennett Square, PA, US)
Resnick, Paul R. (Wilmington, DE, US)

Application Number: 886338
Filing Date: 1978-03-13
Publication_date: 1979-11-27
Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE)
Primary Class(es): 521/27 204/252, 204/296, 428/421, 525/199, 525/200
Other Classes:
US Patent Ref:

3853720	Dec, 1974	Korach et al.	204/128.
4065366	Dec, 1977	Oda et al.	204/296.

Other Refs: 2510071773658951-12267751-13768452-2417652-24177

Sep, 1975	DE
Sep, 1975	JP
Oct, 1976	JP
Nov, 1976	JP
Feb, 1977	JP
Feb, 1977	JP

Primary Examiner: Schofer, Joseph L.
Assistant Examiner: Kulkosky, Peter F.
Attorney: