METHOD OF REMOVING FLUORINATED CARBOXYLIC ACID FROM AQUEOUS LIQUID

    公开(公告)号:US20070027251A1

    公开(公告)日:2007-02-01

    申请号:US11420416

    申请日:2006-05-25

    IPC分类号: C08L27/12

    摘要: A method for removing a fluorinated carboxylic acid or salt thereof from an aqueous liquid by contacting the aqueous liquid with adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of (i) partially fluorinated carboxylic acids or salts thereof corresponding to the general formula: [PF1—O-L1-COO−]iXi+  (I) wherein PF1 represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, L1 represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group with the proviso that when PF1 is fully fluorinated, L1 is a linear partially fluorinated alkylene group or an aliphatic hydrocarbon group, Xi+ represents a cation having the valence i and i is 1, 2 or 3; and (ii) fully fluorinated carboxylic acids or salts thereof corresponding to one of the following general formulas: [PF2—O—(CF2)p—COO−]iXi+  (II) wherein PF2 represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one or more oxygen atoms, p is an integer of 2 to 6 and Xi+ and i have the same meaning as in formula (I); or [PF3-(L2)f-O—CF2—COO−]iXi+  (III) wherein PF3 represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one or more oxygen atoms, L2 represents —O(CF2)x— wherein x is an integer of 1 or 3 to 6, —(O—CF2CF2)s— wherein s is 1, 2 or 3 or —(OCF2)u— wherein u is an integer of 1 to 6, f is 0 or 1 with the proviso that when f is 0, PF3 represents F(CF2)1— wherein 1 is 1, 2, 4, 5 or 6 and with the proviso that when f is 1 and L2 represents —(O—CF2CF2)s—, PF3 represents CF3 or CF3CF2 and Xi+ and i have the same meaning as in formula (I).

    Fluoropolymer for making a fluoroelastomer
    12.
    发明申请
    Fluoropolymer for making a fluoroelastomer 失效
    用于制造含氟弹性体的含氟聚合物

    公开(公告)号:US20060135717A1

    公开(公告)日:2006-06-22

    申请号:US11280880

    申请日:2005-11-16

    IPC分类号: C08F214/18

    CPC分类号: C08F214/186 C08F214/18

    摘要: The present invention relates to a fluoropolymer comprising repeating units derived from one or more gaseous fluorinated olefins and having one or more cure sites comprising (a) a halogen capable of participating in a peroxide cure reaction or (b) a nitrile group, said fluoropolymer further comprising repeating units derived from one or more fluorinated allyl ethers of the formula: CF2═CF—CF(Z)—O—Rf  (I) wherein Z represents F or CF3 and Rf represents a fluorinated alkyl group that may contain one or more catenary oxygen atoms. The fluoropolymer can be cured to a fluoroelastomer. The invention also relates to a curable fluoroelastomer composition comprising the fluoropolymer and a curing agent.

    摘要翻译: 本发明涉及包含衍生自一种或多种气态氟化烯烃并具有一个或多个固化位点的重复单元的含氟聚合物,其包含(a)能够参与过氧化物固化反应的卤素或(b)腈基,所述含氟聚合物进一步 包含衍生自下列通式的一种或多种氟化烯丙基醚的重复单元:<?in-line-formula description =“In-line Formulas”end =“lead”?> CF 2 -CF-CF (Z)-OR(I)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中Z表示F或CF 3 < R 3和R 3表示可以含有一个或多个链状氧原子的氟化烷基。 氟聚合物可以固化成含氟弹性体。 本发明还涉及含氟聚合物和固化剂的可固化含氟弹性体组合物。

    RECOVERY OF FLUORINATED CARBOXYLIC ACID FROM ADSORBENT PARTICLES
    14.
    发明申请
    RECOVERY OF FLUORINATED CARBOXYLIC ACID FROM ADSORBENT PARTICLES 审中-公开
    从吸附颗粒中回收氟化的羧酸

    公开(公告)号:US20070025902A1

    公开(公告)日:2007-02-01

    申请号:US11420413

    申请日:2006-05-25

    IPC分类号: B01D53/70

    摘要: A process for the recovery of fluorinated carboxylic acid or derivative thereof from adsorbent particles on which fluorinated carboxylic acid or a salt thereof is adsorbed. The process includes contacting the adsorbent particles with a liquid composition capable of removing at least part of the fluorinated carboxylic acid or salt thereof from the adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of fluorinated carboxylic acids or salts thereof that correspond to the general formula: [RfO-L-COO−]iXi+  (I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi− represents a cation having the valence i and i is 1, 2 or 3.

    摘要翻译: 从其上吸附氟化羧酸或其盐的吸附剂颗粒中回收氟化羧酸或其衍生物的方法。 该方法包括使吸附剂颗粒与能够从吸附剂颗粒中除去至少部分氟化羧酸或其盐的液体组合物接触。 氟化羧酸或其盐选自对应于以下通式的氟化羧酸或其盐:<?in-line-formula description =“In-line Formulas”end =“lead”→> (I)&lt;&lt;&lt;&lt; i&lt; i&lt; i&lt; “直链式”末端=“尾”→其中L表示直链部分或完全氟化的亚烷基或脂族烃基,R f表示直链部分或完全氟化的脂肪族基团或 被一个或多个氧原子间断的直链部分或完全氟化的脂肪族基团,X i表示i价和i为1,2或3的阳离子。

    Aqueous emulsion polymerization of functionalized fluoromonomers
    16.
    发明授权
    Aqueous emulsion polymerization of functionalized fluoromonomers 有权
    官能化含氟单体的水乳液聚合

    公开(公告)号:US07071271B2

    公开(公告)日:2006-07-04

    申请号:US10697768

    申请日:2003-10-30

    IPC分类号: C08F114/18

    CPC分类号: C08F214/18 C08F214/184

    摘要: A method is provided for aqueous emulsion co-polymerization of two or more fluoromonomers comprising the steps of: 1) forming an aqueous pre-emulsion by mixing a fluoromonomer according to formula I: F2C═CF—R1—SO2X  (I) wherein R1 is a branched or unbranched perfluoroalkyl, perfluoroalkoxy or perfluoroether group comprising 1–15 carbon atoms and 0–4 oxygen atoms and wherein X is F, Cl or Br, together with 0.001–0.9 molar equivalents of a base, in the absence of added emulsifier; and 2) reacting the pre-emulsion with one or more perfluorinated comonomers in the absence of added emulsifier so as to form a fluoropolymer latex comprising a fluoropolymer wherein more than 1 mol % of monomer units are derived from the fluoromonomer according to formula I. In another aspect, the present invention provides a fluoropolymer derived from the fluoropolymer latex made according to the method of the present invention which is free of added emulsifier. In another aspect, the present invention provides a polymer electrolyte membrane comprising the fluoropolymer made according to the method of the present invention which is free of added emulsifier.

    摘要翻译: 提供了一种用于两种或更多种含氟单体的水乳液共聚的方法,包括以下步骤:1)通过混合式I的含氟单体形成水性预乳液:<?in-line-formula description =“In-line 公式“end =”lead“?> F 2 C-CF-R 1 -SO 2 X(I)<βin-line -formulae description =“In-line Formulas”end =“tail”?>其中R 1是支链或非支链全氟烷基,包含1-15个碳原子和0-4个氧原子的全氟烷氧基或全氟醚基团 在不加入乳化剂的情况下,X是F,Cl或Br,以及0.001-0.9摩尔当量的碱; 和2)在不存在加入的乳化剂的情况下使预乳液与一种或多种全氟化共聚单体反应,以便形成含氟聚合物的含氟聚合物胶乳,其中大于1mol%的单体单元衍生自根据式I的含氟单体。 另一方面,本发明提供了衍生自根据本发明的方法制备的含氟聚合物胶乳的氟聚合物,其不含添加的乳化剂。 另一方面,本发明提供了一种聚合物电解质膜,其包含根据本发明的方法制备的含氟聚合物,其不含添加的乳化剂。