Copolymers of vinylidene fluoride and hexafluoropropylene...

C - Chemistry – Metallurgy – 08 – F

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C08F 214/22 (2006.01) H01M 2/16 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2251535

New and novel copolymers of vinylidene fluoride and hexafluoropropylene containing up to about 24 % by weight hexafluoropropylene having improved solution clarity and fluidity, longer gel times and lower extractables than prior art vinylidene fluoride-hexafluoropropylene copolymers of comparable HFP content whose syntheses are disclosed in sufficient detail to duplicate, to novel compositions of matter and articles of manufacture containing such copolymers, processes for the preparation and use of the copolymers, of the compositions of matter containing such copolymers and of the articles of manufacture containing such copolymers are disclosed.

La présente invention concerne de nouveaux copolymères de fluorure de vinylidène et d'héxafluoropropylène (HFP) contenant jusqu'à environ 24 % en poids d'héxafluoropropylène, qui présentent une fluidité et une transparence de solution améliorées, des temps de gélification plus longs et une teneur en constituants extractibles inférieure à celle des copolymères de fluorure de vinylidène et d'héxafluoropropylène existants, de teneur HFP comparable dont les synthèses sont décrites de manière suffisemment détaillée de façon à être dupliquées. La présente invention concerne également de nouvelles compositions et des articles produits contenant les dits copolymères, des procédés de préparation et d'utilisation des copolymères, des compositions de matière contenant les dits copolymères et des articles produits contenant les dits copolymères.

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