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US 7,396,880 B2Granted
Blend of ionic (co)polymer resins and matrix (co)polymers
AssigneeArkema Inc.
InventorsJames Goldbach, Scott Gaboury, Robert Umpleby, Julien Parvole, David Mountz
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Abstract
The invention relates to polymeric resin blends containing polyelectrolyte resins blended into a polymer or copolymer matrix. Specifically, the polyelectrolyte resins are (co)polymers without hydrolyzable groups. The matrix polymer is a tough, and highly chemical-resistant (co)polymer, preferably a fluoropolymer. The polymeric resin blend is useful for forming films, and especially films useful for MEAs for use in fuel cells.
Claims16
A polymer blend having no hydrolyzable groups comprising:
- a) a polyelectrolyte copolymer having the general formula:
- wherein:
- W=a bond, O, NH, S, SO, or SO2
- Y=alkyl, aromatic, or alkylene-ether linkage of C1 to C12
- Z=a bond, alkyl, aromatic, or alkylene-ether linkage of C1 to C12
- n=greater than 50%
- m=less than 50%
- A=a sulfonate, phosphonate or carboxylate
- B=a group capable of cross-linking and
- b) a matrix polymer,
- wherein a) and b) are different, and wherein a) has domain sizes of less than 500 nm.
8 more elements
Dependencies are inferred from the claim text.