| http://www.w3.org/ns/prov#value | - other and selected from H, Cl or perfluoroalkyl having from 1 to 4 C atoms; R'.sub.f is a fluoroalkylene group from 1 to 4 C atoms; j', p' and q' are integers such as to have a molecular weight as that above indicated; (F) --(CF(CF.sub.3)
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