C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 14/24 (2006.01) C08F 2/22 (2006.01) C08F 14/18 (2006.01) C08F 14/22 (2006.01) C08F 214/18 (2006.01) C08F 216/14 (2006.01)
Patent
CA 2414506
31 A polymerization process in aqueous emulsion of: (I) one or more fluorinated monomers containing at least one ethylene unsaturation; (II) one or more fluorinated monomers containing sulphonyl groups -SO2F; said process comprising the use of a surfactant having the formula: R~- X-M' wherein X is equal to -COO, -S03; M is selected from H, NH4, alkaline metal; - R~ represents a (per)fluoropolyether chain, preferably having number average molecular weight comprised between about 230 and about 1,800.
Procédé de polymérisation en émulsion aqueuse : (I) d'au moins un type de monomère fluoré comptant au moins un degré d'insaturation éthylénique; (II) d'au moins un type de monomère fluoré comptant des groupements sulfonyle -SO2F; le procédé en question faisant appel à un surfactant de formule Rf-X-M+, où X correspond à -COO, -SO3; M est un H, un NH4 ou un métal alcalin; - Rf est une chaîne de (per)fluoropolyéther dont la masse moléculaire moyenne se situe idéalement entre environ 230 et environ 1 800.
Arcella Vincenzo
Ghielmi Alessandro
Tommasi Giulio
Ausimont S.p.a.
Riches Mckenzie & Herbert Llp
Solvay Solexis S.p.a.
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