COPOLYMERES COMPRENANT DES GROUPES PHOSPHONATES ET/OU ACIDE PHOSPHONIQUE UTILISABLES POUR CONSTITUER DES MEMBRANES DE PILE A COMBUSTIBLE

摘要

Copolymers comprising at least one recurrent unit of the following formula (I) are provided: and at least one recurrent unit of the following formula (II): wherein: R1 is an alkylene group; Z is a —PO3R3R4, R3 and R4 representing independently of each other, a hydrogen atom an alkyl group, a cation; X and Y represent, independently of each other, a halogen atom, a perfluorocarbon group.