Process for producing cation exchange membrane by impregnating a

Details Process for producing cation exchange membrane by impregnating a Process for producing cation exchange membrane by impregnating a

1979-01-18

1980-02-19

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 31, 204296, C08F25908, C08F26502, C08F27300, C08J 522

Patent

active

041895401

ABSTRACT:
A cation exchange membrane is produced by impregnating a diene derivative having carboxylic acid group and/or carboxylic acid convertible group into a cation exchange membrane of a fluorinated polymer having at least one type cation exchange groups having lower acidity than that of sulfonic acid group wherein a ratio of sulfonic acid groups to total cation exchange groups on one surface (A surface layer) is higher than that of the other surface (B surface layer); performing a partial polymerization of the diene derivative and dipping the resulting membrane into an organic solvent which is miscible with water and has a boiling point of higher than 30.degree. C. at 760 mmHg; holding the membrane between a pair of smooth plates; and heating the membrane at 50.degree. to 180.degree. C.; and if the diene derivative having carboxylic acid convertible group is used, converting said groups into carboxylic acid groups.

REFERENCES:
patent: 3647086 (1972-03-01), Mizutani et al.
patent: 3784399 (1974-01-01), Grot
patent: 4132682 (1979-01-01), Seita et al.

Affiliated with

Also associated with

Rating

Process for producing cation exchange membrane by impregnating a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing cation exchange membrane by impregnating a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing cation exchange membrane by impregnating a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-653823