Fluoropolymers from tetrafluoroethylene and perfluoro(alkoxyalkyl vinyl) ether
    21.
    发明授权
    Fluoropolymers from tetrafluoroethylene and perfluoro(alkoxyalkyl vinyl) ether 有权
    来自四氟乙烯和全氟(烷氧基烷基乙烯基)醚的含氟聚合物

    公开(公告)号:US07060772B2

    公开(公告)日:2006-06-13

    申请号:US10363110

    申请日:2001-09-20

    IPC分类号: C08F16/24

    CPC分类号: C08F214/26

    摘要: A fluoropolymer having a melting point of at least 160° C. is provided wherein the fluoropolymer is derived from tetrafluoroethylene as the major component, one or more perfluoro vinyl ethers as the minor component, the perfluoro vinyl ether having the formula CF2═CFO(CF2)nORf wherein n is from 2 to 6 and Rf is a perfluoroalkyl group having 1 to 6 carbon atoms, and optionally a perfluoro alkyl vinyl ether having from 1 to 5 carbon atoms in the alkyl radical.

    摘要翻译: 提供熔点至少为160℃的含氟聚合物,其中氟聚合物衍生自四氟乙烯作为主要组分,一种或多种全氟乙烯基醚作为次要组分,具有式CF 2的全氟乙烯基醚 其中n为2至6,且R f为(C 1 -C 3) >是具有1至6个碳原子的全氟烷基,并且任选地在烷基中具有1至5个碳原子的全氟烷基乙烯基醚。

    Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups
    28.
    发明授权
    Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups 有权
    从具有季铵基团的碱性阴离子交换树脂中回收氟化表面活性剂

    公开(公告)号:US07807726B2

    公开(公告)日:2010-10-05

    申请号:US11373430

    申请日:2006-03-10

    IPC分类号: C08J5/20

    摘要: The invention provides a method for recovery of a fluorinated anionic surfactant from a basic anion exchange resin having quaternary ammonium groups, the method comprising eluting the anion exchange resin with a composition comprising an ammonium salt and a water miscible organic solvent. The method according to the invention may provide one or more of the following advantages. For example, the method can be designed to allow for recovery of substantially all of the fluorinated surfactant from a basic anion exchange resin having quaternary ammonium groups. Also, the liquid used for recovering the surfactant from the anion exchange resin is a simple liquid that can be readily and cost effectively manufactured. Further the process may be carried out in a convenient and easy manner. Furthermore, the method generally does not require large amounts of the eluting composition.

    摘要翻译: 本发明提供了从具有季铵基团的碱性阴离子交换树脂中回收氟化阴离子表面活性剂的方法,该方法包括用包含铵盐和水混溶性有机溶剂的组合物洗脱阴离子交换树脂。 根据本发明的方法可以提供一个或多个以下优点。 例如,该方法可被设计成允许从具有季铵基团的碱性阴离子交换树脂中恢复基本上所有的氟化表面活性剂。 此外,用于从阴离子交换树脂中回收表面活性剂的液体是可以容易且成本有效地制造的简单液体。 此外,该方法可以以方便和容易的方式进行。 此外,该方法通常不需要大量的洗脱组合物。

    Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant
    29.
    发明授权
    Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant 有权
    使用氟化表面活性剂的氟化单体的水乳液聚合

    公开(公告)号:US07776946B2

    公开(公告)日:2010-08-17

    申请号:US11457502

    申请日:2006-07-14

    IPC分类号: C08K5/09

    CPC分类号: C08F14/18 C08F2/22

    摘要: The present invention provides an aqueous emulsion polymerization of fluorinated monomers including gaseous fluorinated monomers using a perfluoro ether surfactant as an emulsifier. The perfluoro ether surfactants correspond to formula (I) Rf—O—CF2CF2—X  (I) wherein Rf represents a linear or branched perfluoroalkyl group having 1, 2, 3 or 4 carbon atoms and X represents a carboxylic acid group or salt thereof. In a further aspect, the invention also provides an aqueous fluoropolymer dispersion comprising the perfluoro ether surfactant and the use of such dispersion in the coating or impregnation of substrates.

    摘要翻译: 本发明提供使用全氟醚表面活性剂作为乳化剂的氟化单体的水乳液聚合,包括气态氟化单体。 全氟醚表面活性剂对应于式(I)Rf-O-CF 2 CF 2 -X(I),其中R f表示具有1,2,3或4个碳原子的直链或支链全氟烷基,X表示羧酸基团或其盐。 另一方面,本发明还提供一种包含全氟醚表面活性剂的含氟聚合物水分散体和在底物的涂布或浸渍中使用这种分散体。