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EP1323751A2 Polymerization process of sulphonic monomers 有权
磺酸单体的聚合过程

Polymerization process of sulphonic monomers
摘要:
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 -SO 2 F;
said process comprising the use of a surfactant having the formula:

        R f -X - M +

wherein
X is equal to -COO, -SO 3 ;
M is selected from H, NH 4 , alkaline metal;

R f represents a (per)fluoropolyether chain, preferably having number average molecular weight comprised between about 230 and about 1,800.
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