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    • 9. 发明申请
    • AQUEOUS EMULSION POLYMERIZATION PROCESS FOR PRODUCING FLUOROPOLYMERS
    • 用于生产氟聚合物的水性乳液聚合方法
    • US20080015304A1
    • 2008-01-17
    • US11457239
    • 2006-07-13
    • Klaus HintzerMichael JurgensHarald KasparKai H. LochhaasAndreas R. MaurerWerner SchwertfegerTilman C. Zipplies
    • Klaus HintzerMichael JurgensHarald KasparKai H. LochhaasAndreas R. MaurerWerner SchwertfegerTilman C. Zipplies
    • D06M15/277
    • C08F2/24C08F14/18
    • The present invention provides a method of making a fluoropolymer comprising polymerizing one or more fluorinated monomers in an aqueous emulsion polymerization in the presence of a fluorinated surfactant selected from fluorinated surfactants of formula (I): [RfO-L-CO2−]iXi+   (I) wherein Rf is selected from a partially fluorinated alkyl group, a fully fluorinated alkyl group, a partially fluorinated alkyl group that is interrupted with one or more oxygen atoms, and a fully fluorinated alkyl group that is interrupted with one or more oxygen atoms; L is selected from a partially fluorinated alkylene group, a fully fluorinated alkylene group, a partially fluorinated alkylene group that is interrupted with one or more oxygen atoms, and a fully fluorinated alkylene group that is interrupted with one or more oxygen atoms; Xi+ represents a cation having the valence i; and i is 1, 2, or 3; further wherein at least part of the fluorinated surfactant is added to the aqueous phase as an aqueous mixture with at least one fluorinated liquid, and further wherein when the fluorinated surfactant is a perfluorinated polyethercarboxylic acid, the fluorinated liquid is not a perfluoropolyether.
    • 本发明提供一种制备含氟聚合物的方法,其包括在含氟表面活性剂存在下在水乳液聚合中聚合一种或多种氟化单体,所述氟化表面活性剂选自式(I)的氟化表面活性剂:<?in-line-formula description =“In 线公式“end =”lead“?> [R&lt;&lt; /&gt;&lt; /&gt; (I)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中R f选自部分氟化烷基 基团,完全氟化的烷基,被一个或多个氧原子间隔的部分氟化的烷基和被一个或多个氧原子间隔的完全氟化的烷基; L选自部分氟化的亚烷基,完全氟化的亚烷基,被一个或多个氧原子间隔的部分氟化的亚烷基和被一个或多个氧原子间隔的完全氟化的亚烷基; X i + +表示具有i价的阳离子; 我是1,2或3; 其中至少部分氟化表面活性剂与至少一种氟化液体作为含水混合物加入到水相中,并且其中当氟化表面活性剂是全氟化聚醚羧酸时,氟化液体不是全氟聚醚。