Process for fluorinated polymer

Details Process for fluorinated polymer Process for fluorinated polymer

C - Chemistry, Metallurgy

08

J

18/13, 402/514

C08J 5/22 (2006.01) B01J 39/04 (2006.01) C08F 6/28 (2006.01)

Patent

CA 1215196

ABSTRACT A process for extracting a fluorinated polymer which contains carboxylic ester functional groups with a liquid compound which is preferably a perchlorofluorocarbon having a boiling point in the range of 30 to 125°C is described. Polymer so extracted can be fabricated into a membrane and hydrolyzed to ion exchange form to provide a membrane for electrolytic cells. When used as the membrane for a chloralkali cell, such membrane provides improved performance, e.g., a high level of current efficiency and low power consumption are maintained for an extended period of time when compared against a membrane of like construction fabricated from polymer which has not been so extracted.

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