Cross-linked products with structure of perfluoropolyethers...

C - Chemistry – Metallurgy – 07 – C

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402/465, 204/91.

C07C 53/50 (2006.01) C08G 65/00 (2006.01) C08G 65/324 (2006.01) C08G 67/00 (2006.01) C08J 3/28 (2006.01) C08L 71/02 (2006.01)

Patent

CA 1326685

ABSTRACT OF THE DISCLOSURE: Disclosed are cross-linked macromolecular products having structure of perfluoropolyethers in which the cross- linking is due to C-C links between carbon atoms of different perfluoropolyethereal chains. These cross-linked products are obtained by treatment by means of U.V. radiations of the corresponding perfluoropolyethers containing at least three groups Image arranged along the chain and at one or at both ends; the C-C link of cross-linking coming from the removal of two groups: Image of different perfluoropolyethereal chains. These products are useful in form ion exchange membranes for electrolytic processes

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