Process for producing modified polytetrafluoroethylene

Details Process for producing modified polytetrafluoroethylene Process for producing modified polytetrafluoroethylene

C - Chemistry, Metallurgy

08

L

403/4, 400/6530,

C08L 27/18 (2006.01) C08F 259/08 (2006.01)

Patent

CA 1138587

ABSTRACT OF THE DISCLOSURE A modified polytetrafluoroethylene is produced by polymerizing tetrafluoroethylene in an aqueous medium contain- ing a dispersing agent with a polymerization initiator source and then, copolymerizing tetrafluoroethylene and a fluorinated monomer having an acid type functional group as a copolymeriz- able modifier component in the presence of the resulting poly- tetrafluoroethylene to obtain a modified polytetrafluoroethylene having the modifier component of 0.001 to ,0 mol%. By the process of the present invention there is produced a hydrophilic modified polytetrafluoroethylene which is easily fibrilated and which has a high affinity for a fluorinated resin used as an ion exchange resin such as a cation exchange membrane, especially in the reinforcement of the cation exchange membrane.

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