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    Ultraclean fluoroelastomer suitable for use in the manufacturing of electronic components
    2.
    发明授权
    Ultraclean fluoroelastomer suitable for use in the manufacturing of electronic components 有权
    Ultraclean含氟弹性体适用于制造电子元器件

    公开(公告)号：US06943228B2

    公开(公告)日：2005-09-13

    申请号：US10627461

    申请日：2003-07-25

    申请人： Werner M. A. Grootaert ,  Klaus Hintzer ,  Bernhard Hirsch ,  Harald Kaspar ,  Robert E. Kolb ,  Gernot Löhr ,  Werner Schwertfeger

    发明人： Werner M. A. Grootaert ,  Klaus Hintzer ,  Bernhard Hirsch ,  Harald Kaspar ,  Robert E. Kolb ,  Gernot Löhr ,  Werner Schwertfeger

    IPC分类号： C08L27/12 ,  C08F2/00 ,  C08F114/18 ,  C08F214/18 ,  C08K5/14 ,  C08K5/34

    CPC分类号： C08F214/18 ,  C08F214/184

    摘要： A curable fluoroelastomer composition for preparing a perfluoroelastomer. The composition includes; (1) a perfluoropolymer having one or more cure-sites selected from a halogen capable of participating in peroxide cure reaction and/or nitrile groups; (2) an organic peroxide and/or a compound capable of effecting curing of the perfluoropolymer through said nitrile groups; and (3) optionally a polyunsaturated coagent. The perfluoropolymer in the composition is essentially free of ionic end groups and the total amount of metal cations in the composition is not more than 10 μg/g perfluoropolymer. The perfluoroelastomers may be obtained from curing the composition in a sufficiently low amount of metal cations so as to make the fluoroelastomer suitable for use in the semi-conductor industry.

    摘要翻译： 一种用于制备全氟弹性体的可固化的含氟弹性体组合物。 组合物包括： （1）具有一个或多个选自能够参与过氧化物固化反应的卤素和/或腈基的固化位点的全氟聚合物; （2）有机过氧化物和/或能够通过所述腈基实现全氟聚合物固化的化合物; 和（3）任选的多不饱和助剂。 组合物中的全氟聚合物基本上不含离子端基，组合物中金属阳离子的总量不超过10mug / g全氟聚合物。 全氟弹性体可以通过以足够低量的金属阳离子固化组合物获得，以使得氟弹性体适用于半导体工业。

    Process for producing fluoropolymers having a reduced amount of polar end groups
    3.
    发明授权
    Process for producing fluoropolymers having a reduced amount of polar end groups 有权
    制备极性端基量少的含氟聚合物的方法

    公开(公告)号：US06812310B2

    公开(公告)日：2004-11-02

    申请号：US10452523

    申请日：2003-06-02

    申请人： Werner M. A. Grootaert ,  Klaus Hintzer ,  Bernhard Hirsch ,  Harald Kaspar ,  Gernot Löhr ,  Franz März ,  Guy Van Gool

    发明人： Werner M. A. Grootaert ,  Klaus Hintzer ,  Bernhard Hirsch ,  Harald Kaspar ,  Gernot Löhr ,  Franz März ,  Guy Van Gool

    IPC分类号： C08F11418

    CPC分类号： C08F214/262 ,  C08F214/267

    摘要： A fluoropolymer having a reduced amount of polar end groups. The fluoropolymer is produced by free radical polymerization of fluorinated monomers and the initiation of the polymerization is carried out in the presence of a chloride salt. Polar end groups include hydroxy groups and ionized or ionizable end groups. Examples of ionized or ionizable end groups include acid groups and salts thereof such as sulfonic acid and salts thereof, —CH2—OSO3H groups, sulfates and carbonyl containing end groups such as carboxylic and carboxylate groups. Due to the presence of chloride salt at the initiation of the free radical polymerization, CF2Cl end groups are formed instead of the polar end groups. As a result, a fluoropolymer is obtained that has improved processibility and heat resistance.

    摘要翻译： 具有极性端基量减少的含氟聚合物。 含氟聚合物通过氟化单体的自由基聚合制备，并且聚合的引发在氯化物盐的存在下进行。 极性端基包括羟基和电离或可离子化端基。 电离或可离子化端基的实例包括酸基及其盐，例如磺酸及其盐，-CH 2 -OSO 3 H基，硫酸酯和含羰基的端基如羧酸和羧酸酯基。 由于在自由基聚合开始时存在氯化物盐，而是形成CF 2 Cl端基，而不是极性端基。 结果，得到具有改善的加工性和耐热性的含氟聚合物。

    Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions
    7.
    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

    申请人： Rebekka Epsch ,  Klaus Hintzer ,  Gernot Löhr ,  Werner Schwertfeger

    发明人： Rebekka Epsch ,  Klaus Hintzer ,  Gernot Löhr ,  Werner Schwertfeger

    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。

    Method of making an aqueous dispersion of fluoropolymers
    9.
    发明授权
    Method of making an aqueous dispersion of fluoropolymers 失效
    制备含氟聚合物的水性分散体的方法

    公开(公告)号：US06794550B2

    公开(公告)日：2004-09-21

    申请号：US09914507

    申请日：2001-08-28

    申请人： Klaus Hintzer ,  Gernot Löhr ,  Albert Killich ,  Werner Schwertfeger

    发明人： Klaus Hintzer ,  Gernot Löhr ,  Albert Killich ,  Werner Schwertfeger

    IPC分类号： C08J303

    CPC分类号： C08J3/03 ,  C08F6/16 ,  C08J2327/12 ,  Y10S526/911

    摘要： The invention provides a process for removing steam-volatile fluorinated emulsifiers in their free acid form, from aqueous fluoropolymer dispersions. The process comprises adding a nonionic emulsifier, to the aqueous fluoropolymer dispersion and, at a pH-value of the aqueous fluoropolymer dispersion below 5, removing steam-volatile fluorinated emulsifier by distillation until the concentration of steam-volatile fluorinated emulsifier in the dispersion reaches the desired value.

    摘要翻译： 本发明提供一种从含氟聚合物水分散体中除去其游离酸形式的挥发性挥发性氟化乳化剂的方法。 该方法包括向含氟聚合物水分散体中加入非离子乳化剂，并且在含氟聚合物水分散体的pH值低于5的情况下，通过蒸馏除去挥发性挥发性氟化乳化剂直到分散体中蒸汽挥发性氟化乳化剂的浓度达到 所需值。

    Method for recovering fluorinated emulsifiers
    10.
    发明授权
    Method for recovering fluorinated emulsifiers 失效
    回收氟化乳化剂的方法

    公开(公告)号：US06642415B1

    公开(公告)日：2003-11-04

    申请号：US10110643

    申请日：2002-04-12

    申请人： Stephan Führer ,  Klaus Hintzer ,  Gernot Löhr ,  Werner Schwertfeger

    发明人： Stephan Führer ,  Klaus Hintzer ,  Gernot Löhr ,  Werner Schwertfeger

    IPC分类号： C07C5315

    CPC分类号： B01J41/04 ,  C02F2101/14 ,  C02F2103/38 ,  C07C51/47 ,  C07C53/18

    摘要： Fluorinated emulsifiers, in particular, perfluorooctanoic acid are bound to anionic exchange resins for the purification of aqueous effluent from the production of fluoropolymers. Said emulsifiers may be quantitatively eluted from the exchanger with a water-miscible organic solvent, containing a small amount of ammonia. It is of advantage to distil off the ammonia containing solvent, recycle the emulsifier to a further polymerization and recycle the ammoniacal solvent for elution. Addition of alkalis improves the elution efficiency.

    摘要翻译： 氟化乳化剂，特别是全氟辛酸与阴离子交换树脂结合，用于纯化含氟聚合物生产中的含水流出物。 所述乳化剂可以用含有少量氨的水混溶性有机溶剂从交换器中定量洗脱。 蒸馏含氨的溶剂是有利的，将乳化剂再循环进一步聚合，再循环氨溶剂进行洗脱。 碱的添加提高了洗脱效率。