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    New perfluorodioxol, its production and homo-polymer and copolymer obtained therefrom

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    provide a novel perfluorodioxole which is suitable for producing a homopolymer and a copolymer both having excellent mechanical properties and a good thermal stability. CONSTITUTION: A perfluorodioxole of formula I (wherein RF is 1-5C perfluoroalkyl; and X1 and X2 are each F or CF3) (e.g. 2,2,4-trifluoro-5- trifluoromethoxy-1,3-dioxole of formula II) is provided, which is obtd. e.g. by reacting a dioxole of formula III with a fluorooxy compd. of the formula: RFOF and reacting the resultant dioxolane of formula IV with a metal in a dipolar aprotic solvent to dehalogenate the dioxolane of formula IV or by reacting a compd. of formula V with a bisflurooxy compd. of formula VI at -140 to -20°C and dehalogenating the resultant dioxolane of formula IV in the same way as above. The perfluorodioxole of formula I may be homopolymerized or copolymerized with an olefinically unsatd. comonomer

    “Recent developments in the chemistry of fluoroxy compounds"

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    10th European Symposium on Fluorine Chemistry, Padova, Italy (1992)

    “New Aspect in the synthesis and reactivity of some fluoromonomers”

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    Invited speech at the SERMACS ’96: Innovation in the Southeast, Greenville, S.C., USA (1996)

    “New route to 2,2-difluoro-1,3-dioxoles”

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    11th Winter Conference, St.Petersburg, USA (1993)
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