High temperature stable polyelectrolytes having backbone aromatic groups
AssigneeArkema Inc.
InventorsJames T. Goldbach, James E. Copenhafer, David A. Mountz, Scott R. Gaboury
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Abstract
The invention relates to polyelectrolytes having backbone aromatic groups, and in particular to aromatic backbone group polyelectrolytes having high levels of sulfonation as well as cross-linking functionality. Preferably the polyelectrolyte backbone is free of linear alkyl groups.
Claims25
A polyelectrolyte comprising one or more backbone units,
- wherein said polyelectrolyte backbone comprises substituted aryl units and no linear alkyl units of 2 or more carbons in the backbone,
- and wherein said aryl groups are substituted from 1 to 49 mole percent of highly-acidic functional groups and from 1 to 49 mole percent of cross-linkable groups that will crosslink with other polyelectrolyte crosslinkable groups, selected from the group consisting of alcohol, amine, vinylic group, alkyl halide, alkanol, alkylamine,
- and wherein said aryl groups are joined together by electron-withdrawing and/or nucleophilic functional groups wherein said electron-withdrawing group is a sulfone and said nucleophilic functional group is an alcohol.
A polyelectrolyte consisting of related aryl groups on the polymer backbone and possessing one or more repeat units, wherein one repeat unit is substituted at 1 to 49 percent with sulfonate functional groups and the same or a different unit is substituted at 1 to 49 percent with crosslinkable groups.
Dependencies are inferred from the claim text.