Fluoropolymer dispersion and method for making the same
    91.
    发明授权
    Fluoropolymer dispersion and method for making the same 有权
    含氟聚合物分散体及其制造方法

    公开(公告)号:US07728087B2

    公开(公告)日:2010-06-01

    申请号:US11275331

    申请日:2005-12-23

    IPC分类号: C08F2/10

    CPC分类号: D06M15/277 C08F14/18 C08F2/24

    摘要: A method for polymerizing, in an aqueous medium, at least one fluorinated monomer in the presence of a non-copolymerizable, non-fluorinated surfactant. The surfactant is generally selected from a non-ionic surfactant, a primary anionic surfactant, or a combination thereof. Fluorinated surfactants are not utilized. The resulting partially fluorinated polymer in the aqueous medium is either a semi-crystalline polymer or a crystalline polymer.

    摘要翻译: 一种在水性介质中在不可共聚的非氟化表面活性剂存在下聚合至少一种氟化单体的方法。 表面活性剂通常选自非离子表面活性剂,初级阴离子表面活性剂或其组合。 不使用氟化表面活性剂。 在水性介质中得到的部分氟化聚合物是半结晶聚合物或结晶聚合物。

    Primer coating of PTFE for metal substrates
    92.
    发明授权
    Primer coating of PTFE for metal substrates 有权
    用于金属基材的PTFE底漆涂层

    公开(公告)号:US07462667B2

    公开(公告)日:2008-12-09

    申请号:US11172345

    申请日:2005-06-30

    IPC分类号: C08L37/12

    摘要: The present invention provides an aqueous coating composition comprising (i) particles of a non-melt processible polymer of tetrafluoroethylene and (ii) a non-fluorinated polymer selected from the group consisting of a polysulfone, a polyamide, a polyimide, a polyamide-imide, a polybismaleimide and mixtures thereof, wherein said particles are core-shell particles whereby the shell comprises a copolymer of tetrafluoroethylene and a partially fluorinated or non-fluorinated comonomer. The aqueous coating composition may be used for providing a primer coating on a substrate such as a metal or glass substrate. Such primer coating may provide good or excellent non-stick coatings combined with good or excellent scratch and wear resistance of the coating. Also, such primer coating may provide for good to excellent PTFE coatings that can resist hot salt water. The aqueous coating composition may also be used to provide other coating layers of a multi-layer coating.

    摘要翻译: 本发明提供一种水性涂料组合物,其包含(i)四氟乙烯的不可熔融加成聚合物的颗粒和(ii)选自聚砜,聚酰胺,聚酰亚胺,聚酰胺 - 酰亚胺的非氟化聚合物 ,多双马来酰亚胺及其混合物,其中所述颗粒是核 - 壳颗粒,其中壳包含四氟乙烯和部分氟化或非氟化共聚单体的共聚物。 水性涂​​料组合物可以用于在诸如金属或玻璃基材的基材上提供底漆涂层。 这种底漆涂层可以提供良好或优异的不粘涂层,同时具有涂层的良好或优异的耐擦伤性和耐磨性。 此外,这种底漆涂层可以提供可耐受热盐水的良好至优异的PTFE涂层。 水性涂​​料组合物也可用于提供多层涂层的其它涂层。

    Aqueous dispersions of polytetrafluoroethylene particles
    94.
    发明授权
    Aqueous dispersions of polytetrafluoroethylene particles 有权
    聚四氟乙烯颗粒的水分散体

    公开(公告)号:US07342066B2

    公开(公告)日:2008-03-11

    申请号:US10957898

    申请日:2004-10-04

    IPC分类号: C08L27/12

    CPC分类号: C09D127/18 C08L2666/28

    摘要: The present invention provides an aqueous non-melt processible polytetrafluoroethylene dispersion comprising non-melt processible polytetrafluoroethylene particles in an amount between 30 and 70% by weight based on the total weight of the dispersion and one or more non-ionic surfactants and wherein at least a part of said non-melt processible polytetrafluoroethylene particles comprise polytetrafluoroethylene polymer chains having repeating units comprising ionic groups. The invention further provides a method for obtaining the dispersions.

    摘要翻译: 本发明提供了一种含水不可熔融加工的聚四氟乙烯分散体,其包含基于分散体和一种或多种非离子表面活性剂的总重量为30-70重量%的不可熔融加工的聚四氟乙烯颗粒,并且其中至少一个 所述不可熔融加工的聚四氟乙烯颗粒的一部分包括具有包含离子基团的重复单元的聚四氟乙烯聚合物链。 本发明还提供了获得分散体的方法。

    COMPOSITIONS COMPRISING MELT-PROCESSABLE THERMOPLASTIC FLUOROPOLYMERS AND METHODS OF MAKING THE SAME
    96.
    发明申请
    COMPOSITIONS COMPRISING MELT-PROCESSABLE THERMOPLASTIC FLUOROPOLYMERS AND METHODS OF MAKING THE SAME 有权
    包含可熔融加热的热塑性氟聚合物的组合物及其制备方法

    公开(公告)号:US20070208137A1

    公开(公告)日:2007-09-06

    申请号:US11276520

    申请日:2006-03-03

    IPC分类号: C08L27/12

    摘要: A composition comprising a first fluoropolymer and a second fluoropolymer. The first and second fluoropolymers are melt-processable, thermoplastic and have a melting point between 100° C. and 320° C. The first fluoropolymer has a relaxation exponent of from 0.93 to 1.0. The second fluoropolymer has a relaxation exponent of from 0.3 to 0.92. A composition comprising a first fluoropolymer having a long chain branching index of from 0 to 0.1 and a second fluoropolymer having a long chain branching index of at least 0.2. A composition comprising a core-shell polymer having a first polymer portion, wherein a polymer having an identical chemical structure as the first polymer portion has a relaxation exponent of from 0.93 to 1.0, and a second fluoropolymer portion, wherein a polymer having an identical chemical structure as the second fluoropolymer portion has a relaxation exponent of from 0.3 to 0.92. Methods for making compositions and methods of making articles from compositions.

    摘要翻译: 一种包含第一含氟聚合物和第二含氟聚合物的组合物。 第一和第二含氟聚合物是可熔融加工的,热塑性的并且具有在100℃和320℃之间的熔点。第一含氟聚合物的松弛指数为0.93至1.0。 第二含氟聚合物的弛豫指数为0.3〜0.92。 一种组合物,其包含长链支化指数为0至0.1的第一含氟聚合物和长链支化指数至少为0.2的第二含氟聚合物。 一种组合物,其包含具有第一聚合物部分的核 - 壳聚合物,其中具有与所述第一聚合物部分相同的化学结构的聚合物具有0.93至1.0的松弛指数,和第二含氟聚合物部分,其中具有相同化学 作为第二含氟聚合物部分的结构具有0.3至0.92的松弛指数。 制备组合物的方法和从组合物制备制品的方法。

    Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups
    98.
    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。

    Melt-processible thermoplastic fluoropolymers having improved processing characteristics and method of producing same
    100.
    发明授权
    Melt-processible thermoplastic fluoropolymers having improved processing characteristics and method of producing same 有权
    具有改进的加工特性的可熔融加工的热塑性含氟聚合物及其制备方法

    公开(公告)号:US06927265B2

    公开(公告)日:2005-08-09

    申请号:US10774154

    申请日:2004-02-06

    摘要: The present invention provides a fluoropolymer that is melt-processible and thermoplastic and that has a melting point between 100° C. and 320° C. The fluoropolymer is derived from (a) one or more gaseous fluorinated monomers, (b) one or more modifiers selected from (i) olefins having a bromine or iodine atom bonded to a carbon of the double bond of the olefin, (ii) olefins corresponding to formula (I): Xa2C═CXa—Rf—Br  (I) wherein each Xa independently represents hydrogen, fluorine, bromine, chlorine or iodine, Rf is a perfluoroalkylene group, typically having 1 to 8 carbon atoms, a perfluorooxyalkylene group or a perfluoropolyether group and (iii) mixtures thereof; and (c) optionally one or more comonomers selected from non-gaseous fluorinated monomers and non-fluorinated monomers. The resulting fluoropolymer has long chain branches. The invention further provides a method for making these polymers.

    摘要翻译: 本发明提供了可熔融加工和热塑性且熔点在100℃和320℃之间的含氟聚合物。该含氟聚合物衍生自(a)一种或多种气态氟化单体,(b)一种或多种 选自(i)具有与烯烃双键结合的溴或碘原子的烯烃的改性剂,(ii)对应于式(I)的烯烃:<?在线式描述=“在线式 “end =”lead“?> X C-CX -R 其中每个X a a独立地表示氢,氟,溴,氯或碘,R 1,R 2, 通常具有1至8个碳原子的全氟亚烷基,全氟代亚烷基或全氟聚醚基团,和(iii)它们的混合物; 和(c)任选的一种或多种选自非气态氟化单体和非氟化单体的共聚单体。 得到的含氟聚合物具有长链分支。 本发明还提供了制备这些聚合物的方法。