Terminally iodized polyfluoroalkane and method for producing...

C - Chemistry – Metallurgy – 07 – C

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C07C 19/16 (2006.01) C07C 17/278 (2006.01)

Patent

CA 2698522

Provided is a terminally iodized polyfluoroalkane represented by the general formula: C n F2n+1(CHXCFY)s+p(CF2CF2)t+r I [I] (in the formula, X and Y are each a hydrogen atom or a fluorine atom, wherein when Y is a fluorine atom, X is also a fluorine atom; n is an integer of 1 to 6; s+p is an integer of 1 to 5 and denotes the number of CHXCFY group; and t+r is 0 or an integer of 1 to 6 and denotes the number of tetrafluoroethylene skeleton). The terminally iodized polyfluoroalkane is produced by telomerizing a fluorine-containing olefin CHX=CFY and tetrafluoroethylene, successively, to C n F2n+1 in the presence of a peroxide initiator.

L'invention porte sur un polyfluoroalcane à terminaison iodée, représenté par la formule générale suivante (I). CnF2n+1(CHXCFY)s+p(CF2CF2)t+rI (I) (Dans la formule, X et Y représentent chacun un atome d'hydrogène ou un atome de fluor, à la condition que, lorsque Y est un atome de fluor, X est également un atome de fluor ; n représente un entier de 1-6 ; s + p représente le nombre de groupes CHXCHY, à savoir un entier de 1-5 ; et t + r représente le nombre de squelettes de tétrafluoroéthylène, à savoir 0 ou un entier de 1-6). Le polyfluoroalcane à terminaison iodée peut être obtenu par télomérisation séquentielle d'une oléfine contenant du fluor CHX=CFY et de tétrafluoroéthylène avec CnF2n+1I en présence d'un initiateur peroxyde.

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