T. Narita et al., Novel fluorinated polymers by radical polyaddition of bis(alpha-trifluoromethyl-beta-difluorovinyl) dicarboxylate with ether, MACRO CH P, 201(2), 2000, pp. 220-225
To develop the radical polyaddition reaction of bis(alpha-trifluoromethyl-b
eta-difluorovinyl) terephthalate (BFP) with 1,4-dioxane, bis(alpha-trifluor
omethyl-beta-difluorovinyl) cyclohexane-1,4-dicarboxylate (FDFC) and bis(al
pha-trifluoromethyl-beta-difluorovinyl) adipate (FDFA) were prepared and po
lyadditions with 1,4-dioxane, diethyl ether, and 1,2-dimethoxyethane were e
xamined in the presence of benzoyl peroxide (BPO). The molecular weight of
the polymer obtained from FDFC with dioxane was 2.9 x 10(3). A polymer with
a molecular weight of 4.5 x 10(3) was obtained by the reaction of FDFA wit
h 1,4-dioxane initiated with BPO. Polyaddition reactions of FDFC or FDFA wi
th 1,2-dimethoxyethane or diethyl ether were found to produce linear polyme
rs which are soluble in common organic solvents. These: results suggested t
hat 1,4-dioxane, diethyl ether and 1,3-dimethoxyethane work as monomers in
this reaction system. Postpolymerization of the polymer obtained from BFP w
ith 1,4-dioxane was also examined to yield a polymer of higher molecular we
ight compared to that of the starting polymer. A postulated polymerization
mechanism of BFP with 1,4-dioxane is briefly discussed.