H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/10 (2006.01) C08J 5/22 (2006.01)
Patent
CA 2627168
High molecular weight polymer obtainable by a process involving free-radically polymerizing a composition which comprises, based on its overall weight, at least 80.0% by weight of ethylenically unsaturated compounds, characterized in that the composition comprises at least one monomer containing phosphonic acid groups and/or sulfonic acid groups. The polymer has a weight-average degree of polymerization of more than 300 and on account of its physical and chemical properties is suitable in particular for polymer-electrolyte membranes (PEM) in PEM fuel cells.
L~invention concerne un polymère de poids moléculaire élevé, obtenu par un procédé selon lequel une composition est polymérisée radicalairement, ladite composition comprenant, par rapport à son poids total, au moins 80,0 % en poids de composés à insaturations éthyléniques, caractérisé en ce que la composition comprend au moins un monomère contenant des groupes acide phosphonique et/ou des groupes acide sulfonique. Le polymère présente un degré de polymérisation moyen en poids supérieur à 300 et est particulièrement approprié, en raison de ses propriétés chimiques et physiques, à une utilisation pour des membranes polymériques d~électrolyte (PEM) dans des piles à combustible à PEM.
Belack Joerg
Bratschkov Hhristo
Schenkov Stoicho
Schopov Ivan
Sinigersky Vesselin
Basf Fuel Cell Gmbh
Robic
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