Sulphur-containing and sulphonated aromatic perfluoroalkane monomer
AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorMilan Fedurco
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Abstract
A sulphur-containing and sulphonated aromatic perfluoroalkane monomer is provided that can be used for the manufacture of a polymer membrane for a PEM-type fuel cell. The perfluoroalkane monomer is a functionalized polymer that has a structure corresponding to a formula (I): E1-Ar1—X1—(CF2)n—X2—Ar2-E2 (I) in which: n is in a range from 1 to 20; X1 and X2, which are identical or different, represent S, SO, or SO2; Ar1, Ar2, which are identical or different, represent a phenylene group, at least one of Ar1 and Ar2 bearing a sulphonic (—SO3H) group or a sulphonate (—SO3M) group, in which M represents an alkali metal cation; and E1 and E2, which are identical or different, represent an electrophilic group such as a halogen, specifically fluorine or chlorine.
Claims14
A sulphur-containing and sulphonated aromatic perfluoroalkane monomer corresponding to a formula (I):
- E1-Ar1—X1—(CF2)n—X2—Ar2-E2 (I)
- in which:
- n is in a range from 1 to 20;
- X1 and X2, which are identical or different, represent S, SO, or SO2;
- Ar1, Ar2, which are identical or different, represent a phenylene group, at least one of Ar1 and Ar2 bearing a sulphonic (—SO3H) group or a sulphonate (—SO3M) group, in which M represents an alkali metal cation;
- and
- E1and E2, which are identical or different, represent an electrophilic functional group.
Dependencies are inferred from the claim text.