Polymer composition, membrane comprising the same, process...

Details Polymer composition, membrane comprising the same, process... Polymer composition, membrane comprising the same, process...

B - Operations, Transporting

01

D

B01D 71/52 (2006.01) C08J 5/22 (2006.01) C08L 65/00 (2006.01) C08L 79/04 (2006.01) H01M 2/16 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2350205

The composition described comprises 30 to 99.5% by weight of a sulfonated aromatic polyether ketone which has an ion-exchange capacity of from 1.3 to 4.0 meq (-SO3H)/g of polymer, and from 0.5 to 70% by weight of a polybenzimidazole. This composition can, as can a sulfonated polyether ketone of PEK type, be processed to give membranes, preferably used in fuel cells.

L'invention concerne une composition contenant 30 à 99,5 % en poids d'un polyéthercétone aromatique sulfoné présentant une capacité d'échangeur d'ions de 1,3 à 4,0 milliéquivalents de (-SO3H) par gramme de polymère, et 0,5 à 70 % en poids d'un polybenzimidazole. On peut transformer la composition selon l'invention, tout comme un polyéthercétone sulfoné de type PEK, en membranes utilisées, de préférence, dans des piles à combustible.

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