C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/321, 402/404
C08F 2/16 (2006.01) B01J 39/20 (2006.01) C08F 214/18 (2006.01)
Patent
CA 1160799
ABSTRACT OF THE DISCLOSURE: A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source and in the presence of a specific molecular weight regulator, The specific molecular weight regulator is selected from the group consisting of aliphatic alkanes,alicyclic alkanes and water soluble organic solvents and controls the molecular weight without lowering the copolymerization velocity and without lowering the stability of the aqueous latex.
360974
Asawa Tatsuro
Miyake Haruhisa
Yamashita Masami
Asahi Glass Company Ltd.
Marks & Clerk
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