Process for producing fluorinated copolymer having ion-exchange

Details Process for producing fluorinated copolymer having ion-exchange Process for producing fluorinated copolymer having ion-exchange

1976-11-08

1978-09-26

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

526245, 526246, 526247, 526240, 528 27, 528 38, C08F 206

Patent

active

041168887

ABSTRACT:
A fluorinated copolymer having 1 to 50 mole % of a component having functional group of carboxylic acid group or a group which can be converted to carboxylic acid group, is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having the functional group in the presence of a polymerization initiator source in 0 to 10 mole of an inert organic solvent per 1 mole of the functional monomer under the pressure of higher than 6 kg/cm.sup.2 whereby the copolymer having high molecular weight (T.sub.Q of higher than 150.degree. C) and an ion exchange capacity of 0.5 to 4 meq/g dry polymer is produced.

REFERENCES:
patent: 3041317 (1962-06-01), Gibbs et al.
patent: 3503945 (1970-03-01), Kim
patent: 3624250 (1971-11-01), Carlson
patent: 3853720 (1974-12-01), Korach et al.
patent: 3985501 (1976-10-01), Grot

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