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CN102822213B 制造偏二氟乙烯聚合物分散体的方法 有权

制造偏二氟乙烯聚合物分散体的方法
摘要：
一种用于制造偏二氟乙烯（VDF）热塑性聚合物[聚合物(F)]的分散体的方法，所述方法包括将VDF在一种水相中进行聚合，该水相包括：至少一种选自下组的表面活性剂，该组由以下各项组成：非氟化的表面活性剂[表面活性剂(HS)]以及具有小于400的分子量的氟化的表面活性剂[表面活性剂(FS)]；以及至少一种包含至少一个(全)氟聚氧亚烷基链[链(R’F)]以及至少一个官能团的官能性(全)氟聚醚（官能性PFPE），所述PFPE具有至少1000的数均分子量以及25℃时在水中小于按重量计1%的溶解度，其中所述官能性PFPE在水相中存在的量值是0.001至0.3g/l。
摘要（英）：

A process for manufacturing a dispersions of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process comprising polymerizing VDF in an aqueous phase comprising: at least one surfactant selected from the group consisting of non-fluorinated surfactants [surfactant (HS)] and fluorinated surfactants having a molecular weight of less than 400 [surfactant (FS)]; and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R′F)] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a solubility in water of less than 1% by weight at 25° C., wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/l.

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