Polymerization process in suspension

Details Polymerization process in suspension Polymerization process in suspension

C - Chemistry, Metallurgy

08

F

C08F 14/18 (2006.01) C08F 2/20 (2006.01) C08G 65/00 (2006.01)

Patent

CA 2209979

Use of surfactants in the suspension polymerization of fluorinated monomers for preparing fluoropolymers containing hydrogen, said surfacants having the general formula: R f- [L- (OCHR1-CHR2)m -OZ)]i wherein: i is equal to 1 or 2; m is an integer comprised between 4 and 60; L can be chosen between: -(CFY-CO-O)p R'- and -(CFY-CO-NH)p R'- wherein p is an integer equal to 0 or to 1; Y = F, CF3; R'= alkylic radical C1-C5, linear or branched when possible; R1, R2 can be both H or the former H and the latter CH3; Z can be H, alkyl radical C1-C3, linear or branched when possible; or (CH2)n OH with n an integer from 1 to 6; R f is a perfluoroalkylic radical or a perfluoropolyether radical, having a number average molecular weight comprised between 250 and 1500.

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