Fibers flash-spun from fully halogenated polymers

D - Textiles – Paper – 01 – D

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D01D 5/11 (2006.01) C08J 3/09 (2006.01) D01F 6/18 (2006.01) D01F 6/32 (2006.01)

Patent

CA 2274633

A flash-spun material comprised of at least 90 % by weight of polymers selected from the groups A, B, and C; wherein group A comprises polymers with a melting point above 280 ~C that are comprised of halocarbon polymers in which at least 20 % of the total number of halogen atoms in each halocarbon polymer are fluorine atoms; wherein group B comprises polymers with a melting point above 280 ~C that are comprised of oxyhalocarbon polymers in which at least 20 % of the total number of halogen atoms in each oxyhalocarbon polymer are fluorine atoms; and wherein group C comprises perfluorinated ion exchange polymer resins. A process for producing such flash-spun material and a solvent for producing such flash-spun material are also provided.

L'invention concerne un matériau obtenu par "flash-spinning", constitué par au moins 90 % en poids de polymères, choisis dans les groupes A, B et C. Le groupe A comprend des polymères avec un point de fusion au-dessus de 280 ·C constitués de polymères halocarbonés dans lesquels au moins 20 % du nombre total des atomes d'halogène dans chaque polymère halocarboné sont des atomes de fluor, le groupe B comprend des polymères avec un point de fusion au-dessus de 280 ·C qui sont constitués de polymères oxyhalocarbonés dans lesquels au moins 20 % du nombre total des atomes d'halogène dans chaque polymère oxyhalocarboné sont des atomes de fluor et le groupe C comprend des résines polymères échangeuses d'ions perfluorées. L'invention concerne également un procédé de "flash spinning" pour obtenir un tel matériau et un solvant adapté à ce procédé.

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