Patent ID: 6747109
Filing Date: 2004-06-08
Classification: C07C,C07D,C08F

Abstract:
A polymerization process of one or more fluorinated monomers wherein perfluorodiacylperoxides are used as polymerization initiators, said perfluorodiacylperoxides having the following structures: wherein:when Rf is F, Rfâ€², Rfâ€³ are both â€”CF3; when Rf is â€”CF3, Rfâ€² and Rfâ€³ are C1-C3 linear or branched perfluorooxvalkyl groups; wherein:RV is selected from F, perflurooxyalkyl, C1-C3 linear or branched perfluoroalkyl; X1, X2 are selected from F, perfluoroalkyl, C1-C3 linear or branched perfluorooxyalkyl; wherein:n=1-3 X3 is selected from F, C1-C3 linear or branched perfluoroalkyl, with the proviso that for n=3, X3 cannot be F; wherein said perfluorodiacyl peroxides meet the following condition: the thermal decomposition constants Kd (secâˆ’1) in the presence of water do not undergo substantial variations with respect to the thermal decomposition constants in absence of water.