| http://www.w3.org/ns/prov#value | - CF(CF3)O!r --CF2 --CF2 --CF3, wherein r is an integer of at least 1; (c) --CF2 --(CF2 --O)q --CF3, wherein q is an integer of at least 2; and (d) --CH2 --C(CF3)2 --CF2 --CF2 --CF3 ; each Rf optionally substituted with one or more hydrogen; Ar is a divalent aromatic radical; W is selected from the group consisting of(e) C1 to about C8 alkyl; (f) Rf --Ar, wherein each of Rf and Ar is as defined abo
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