Fibers flash-spun from partially fluorinated polymers

Details Fibers flash-spun from partially fluorinated polymers Fibers flash-spun from partially fluorinated polymers

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D01D 5/11 (2006.01) D01F 6/32 (2006.01) D01F 6/46 (2006.01) D01F 6/52 (2006.01) D01F 6/90 (2006.01) D01F 6/92 (2006.01)

Patent

CA 2242468

A flash-spun material comprised of at least 20 % partially fluorinated hydrocarbon polymers in which between 10 % and 70 % of the total number of hydrogen atoms in each hydrocarbon polymer are replaced by fluorine atoms. The partially fluorinated hydrocarbon polymers are preferably comprised of at least 80 % by weight of polymerized monomer units selected from ethylene, tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride and vinyl fluoride. The flash-spun material may be a plexifilamentary strand or a microcellular foam. Also provided is a process for producing flash-spun material from partially fluorinated hydrocarbon polymers in a solvent and a solution from which such polymers may be flash-spun.

L'invention porte sur un matériau obtenu par filage éclair, constitué d'au moins 20 % de polymères d'hydrocarbure partiellement fluorés, des atomes de fluor ayant remplacé entre 10 et 70 % de la totalité des atomes d'hydrogène de chaque polymère d'hydrocarbure. Ces polymères d'hydrocarbure partiellement fluorés comportent au moins 80 % en poids de monomères polymérisés sélectionnés parmi différentes substances, à savoir de l'éthylène, du tétrafluoroéthylène, du chlorotrifluoroéthylène, du fluorure de vinylidène et du fluorure de vinyle. Le matériau obtenu par filage éclair peut être un fil plexifilamenteux ou une mousse micro-cellulaire. L'invention porte également sur un procédé permettant de produire un matériau obtenu par filage éclair à partir de polymères d'hydrocarbure partiellement fluorés dans un solvant et une solution à partir de quoi il est possible d'obtenir ces polymères par filage éclair.

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