Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups
    56.
    发明申请
    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:US20060205828A1

    公开(公告)日:2006-09-14

    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 an anionic fluorinated 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阴离子氟化表面活性剂的方法,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。

    Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions
    58.
    发明申请
    Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions 审中-公开
    用于降低含氟聚合物水分散体中氟化表面活性剂的量的方法

    公开(公告)号:US20050070633A1

    公开(公告)日:2005-03-31

    申请号:US10992961

    申请日:2004-11-19

    IPC分类号: C08F6/16 C08L27/12 C08L1/00

    CPC分类号: C08F6/16 C08F6/20 C08L27/12

    摘要: The present invention provides a process of reducing the amount of fluorinated emulsifier in an aqueous fluoropolymer dispersion by contacting the aqueous fluoropolymer dispersion with an anion exchange resin in a non-fixed resin bed, the process comprising: (a) mixing the aqueous fluoropolymer dispersion with an effective amount of a surfactant so as to stabilize the fluoropolymer dispersion while being contacted with the anion exchange resin; (b) contacting the aqueous fluoropolymer dispersion with an anion exchange resin by agitating the aqueous fluoropolymer dispersion with an effective amount of anion exchange resin for a time of less than 4 hours to reduce the amount of fluorinated emulsifier in the aqueous fluoropolymer dispersion to a desired level; and (c) separating the anion exchange resin from the aqueous fluoropolymer dispersion.

    摘要翻译: 本发明提供一种通过使含氟聚合物含水分散体与阴离子交换树脂在非固定树脂床中接触来降低含氟聚合物水分散体含量的方法,该方法包括:(a)将含氟聚合物水分散体与 有效量的表面活性剂,以便在与阴离子交换树脂接触的同时稳定含氟聚合物分散体; (b)通过用有效量的阴离子交换树脂搅拌含氟聚合物水分散体少于4小时使含氟聚合物含水分散体与阴离子交换树脂接触,将含氟聚合物水分散体中的氟化乳化剂的量减少到所需的 水平; 和(c)从含氟聚合物含水分散体中分离阴离子交换树脂。

    Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions
    59.
    发明授权
    Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions 失效
    用于降低含氟聚合物水分散体中氟化表面活性剂的量的方法

    公开(公告)号:US06825250B2

    公开(公告)日:2004-11-30

    申请号:US10429387

    申请日:2003-05-05

    IPC分类号: C08L100

    CPC分类号: C08F6/16 C08F6/20 C08L27/12

    摘要: The present invention provides a process of reducing the amount of fluorinated emulsifier in an aqueous fluoropolymer dispersion by contacting the aqueous fluoropolymer dispersion with an anion exchange resin in a non-fixed resin bed, the process comprising: (a) mixing the aqueous fluoropolymer dispersion with an effective amount of a surfactant so as to stabilize the fluoropolymer dispersion while being contacted with the anion exchange resin; (b) contacting the aqueous fluoropolyrner dispersion with an anion exchange resin by agitating the aqueous fluoropolymer dispersion with an effective amount of anion exchange resin for a time of less than 4 hours to reduce the amount of fluorinated emulsifier in the aqueous fluoropolymer dispersion to a desired level; and (c) separating the anion exchange resin from the aqueous fluoropolymer dispersion.

    摘要翻译: 本发明提供一种通过使含氟聚合物含水分散体与阴离子交换树脂在非固定树脂床中接触来降低含氟聚合物水分散体含量的方法,该方法包括:(a)将含氟聚合物水分散体与 有效量的表面活性剂,以便在与阴离子交换树脂接触的同时稳定含氟聚合物分散体;(b)通过用有效量的阴离子交换树脂搅拌含氟聚合物水分散体使其与阴离子交换树脂接触, 少于4小时的时间将含氟聚合物水分散体中的氟化乳化剂的量减少到所需水平; 和(c)从含氟聚合物含水分散体中分离阴离子交换树脂。

    Fluoropolymers having pendant imidate structures
    60.
    发明授权
    Fluoropolymers having pendant imidate structures 失效
    含有亚氨酸酯侧链结构的含氟聚合物

    公开(公告)号:US06803425B2

    公开(公告)日:2004-10-12

    申请号:US10122487

    申请日:2002-04-11

    IPC分类号: C08F814

    摘要: A composition comprising (a) a fluoropolymer having pendant imidate groups, which imidate groups have the formula: —C═NH(OR) wherein R is a C1-C10 aliphatic group which aliphatic group may have F or Cl substituents; and optionally, (b) a perfluorovinyl ether of the general formula: CF2═CFO(R′fO)a(R″fO)bRf wherein R′f and R″f are the same or are different C1-C6 linear or branched perfluoroalkylene groups; a and b are, independently, 0 or an integer from 1 to 10; and Rf is a C1-C8 perfluoroalkyl group or a C1-C15 perfluoroalkoxy group. Also provided are a method of making a fluoropolymer composition and curable and cured articles comprising a fluoropolymer composition.

    摘要翻译: 一种组合物,其包含(a)具有亚酰氨基侧基的含氟聚合物,所述亚胺基具有下式:-C = NH(OR),其中R是C1-C10脂族基团,该脂族基团可以具有F或Cl取代基; 和(b)通式CF 2 = CFO(R'fO)a(R“f O)b R f的全氟乙烯基醚,其中R'f和R''f相同或不同,C1-C6直链或 支链全氟亚烷基; a和b独立地为0或1〜10的整数; Rf为C1-C8全氟烷基或C1-C15全氟烷氧基。 还提供了制备包含含氟聚合物组合物的含氟聚合物组合物和可固化和固化的制品的方法。