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    Polymide gas separation membranes
    3.
    发明授权
    Polymide gas separation membranes 失效
    聚合物气体分离膜

    公开(公告)号：US06790263B1

    公开(公告)日：2004-09-14

    申请号：US09661902

    申请日：2000-09-14

    申请人： Yong Ding ,  Benjamin Bikson ,  Joyce Katz Nelson

    发明人： Yong Ding ,  Benjamin Bikson ,  Joyce Katz Nelson

    IPC分类号： B01D7164

    CPC分类号： C08G73/10 ,  B01D53/228 ,  B01D69/12 ,  B01D71/64 ,  B01D71/82

    摘要： Soluble polyamic acid salt (PAAS) precursors comprised of tertiary and quaternary amines, ammonium cations, sulfonium cations, or phosphonium cations, are prepared and fabricated into membranes that are subsequently imidized and converted into rigid-rod polyimide articles, such as membranes with desirable gas separation properties. A method of enhancing solubility of PAAS polymers in alcohols is also disclosed.

    摘要翻译： 制备由叔胺和季胺，铵阳离子，锍阳离子或鏻阳离子组成的可溶性聚酰胺酸盐（PAAS）前体，并将其制成膜，随后将其酰亚胺化并转化为刚性聚酰亚胺制品，例如具有所需气体的膜 分离性能。 还公开了增加PAAS聚合物在醇中的溶解度的方法。

    Gas separation using membranes formed from blends of perfluorinated polymers
    4.
    发明授权
    Gas separation using membranes formed from blends of perfluorinated polymers 失效
    使用由全氟化聚合物共混物形成的膜进行气体分离

    公开(公告)号：US06723152B2

    公开(公告)日：2004-04-20

    申请号：US10187124

    申请日：2002-07-01

    申请人： Benjamin Bikson ,  Yong Ding ,  Johann Katz Leroux ,  Joyce Katz Nelson

    发明人： Benjamin Bikson ,  Yong Ding ,  Johann Katz Leroux ,  Joyce Katz Nelson

    IPC分类号： B01D5322

    CPC分类号： B01D53/228 ,  B01D71/32 ,  B01D71/44 ,  B01D71/76

    摘要： A preferred gas separation membrane made from a blend of a copolymer of 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxole (BDD) and tetrafluoroethylene (TFE) with a 2,2,4-trifluoro-5-trifluoromethoxy-1,3-dioxide based polymer is disclosed, the membrane exhibiting an advantageous combination of gas separation and permeation properties for a number of gas separation applications. In particular, the membrane formed from the blend of these polymers exhibits unexpectedly high gas separation factors for separation of volatile organic hydrocarbon vapors (VOC) from air, compared to the component polymers that form the blends. Fabrication of composite membranes formed from perfluoropolymer blends is further disclosed.

    摘要翻译： 优选的气体分离膜由2,2-双（三氟甲基）-4,5-二氟-1,3-二氧杂环戊烯（BDD）和四氟乙烯（TFE）的共聚物与2,2,4-三氟 公开了5-三氟甲氧基-1,3-二氧化物基聚合物，所述膜对于多种气体分离应用显示出气体分离和渗透性质的有利组合。 特别地，与形成共混物的组分聚合物相比，由这些聚合物的共混物形成的膜显示出用于将挥发性有机烃蒸气（VOC）与空气分离的意想不到的高气体分离因子。 进一步公开了由全氟聚合物共混物形成的复合膜的制造。

    Composite Perfluorohydrocarbon Membranes, Their Preparation and Use
    7.
    发明申请
    Composite Perfluorohydrocarbon Membranes, Their Preparation and Use 审中-公开
    复合全氟烃膜，其制备与应用

    公开(公告)号：US20070256969A1

    公开(公告)日：2007-11-08

    申请号：US11744018

    申请日：2007-05-03

    申请人： Yong Ding ,  Benjamin Bikson

    发明人： Yong Ding ,  Benjamin Bikson

    IPC分类号： B01D71/06

    CPC分类号： B01D69/12 ,  B01D71/32 ,  B01D71/38 ,  B01D71/78 ,  B01D2323/18 ,  B01D2325/34 ,  B29C67/202 ,  B29C71/02 ,  B29C2071/022 ,  B29K2071/00 ,  B29K2105/041 ,  B29L2031/755 ,  Y02P20/132

    摘要： Composite porous hydrophobic membranes are prepared by forming a perfluorohydrocarbon layer on the surface of a preformed porous polymeric substrate. The substrate can be formed from poly(aryl ether ketone) and a perfluorohydrocarbon layer can be chemically grafted to the surface of the substrate. The membranes can be utilized for a broad range of fluid separations, such as microfiltration, nanofiltration, ultrafiltration as membrane contactors for membrane distillation and for degassing and dewatering of fluids. The membranes can further contain a dense ultra-thin perfluorohydrocarbon layer superimposed on the porous poly(aryl ether ketone) substrate and can be utilized as membrane contactors or as gas separation membranes for natural gas treatment and gas dehydration.

    摘要翻译： 通过在预成型的多孔聚合物基材的表面上形成全氟烃层来制备复合多孔疏水膜。 基材可以由聚（芳基醚酮）形成，并且全氟烃层可以化学接枝到基材的表面。 膜可以用于广泛的流体分离，例如微滤，纳滤，超滤作为用于膜蒸馏的膜接触器和用于流体的脱气和脱水。 膜可以进一步包含叠加在多孔聚（芳基醚酮）基底上的致密超薄全氟烃层，并可用作膜接触器或气体分离膜用于天然气处理和气体脱水。

    Composite Perfluorohydrocarbon Membranes, Their Preparation and Use
    10.
    发明申请
    Composite Perfluorohydrocarbon Membranes, Their Preparation and Use 有权
    复合全氟烃膜，其制备与应用

    公开(公告)号：US20110120307A1

    公开(公告)日：2011-05-26

    申请号：US12979565

    申请日：2010-12-28

    申请人： Yong Ding ,  Benjamin Bikson

    发明人： Yong Ding ,  Benjamin Bikson

    IPC分类号： B01D53/04 ,  C08J9/00

    CPC分类号： B01D69/12 ,  B01D71/32 ,  B01D71/38 ,  B01D71/78 ,  B01D2323/18 ,  B01D2325/34 ,  B29C67/202 ,  B29C71/02 ,  B29C2071/022 ,  B29K2071/00 ,  B29K2105/041 ,  B29L2031/755 ,  Y02P20/132

    摘要： Composite porous hydrophobic membranes are prepared by forming a perfluorohydrocarbon layer on the surface of a preformed porous polymeric substrate. The substrate can be formed from poly(aryl ether ketone) and a perfluorohydrocarbon layer can be chemically grafted to the surface of the substrate. The membranes can be utilized for a broad range of fluid separations, such as microfiltration, nanofiltration, ultrafiltration as membrane contactors for membrane distillation and for degassing and dewatering of fluids. The membranes can further contain a dense ultra-thin perfluorohydrocarbon layer superimposed on the porous poly(aryl ether ketone) substrate and can be utilized as membrane contactors or as gas separation. membranes for natural gas treatment and gas dehydration.

    摘要翻译： 通过在预成型的多孔聚合物基材的表面上形成全氟烃层来制备复合多孔疏水膜。 基材可以由聚（芳基醚酮）形成，并且全氟烃层可以化学接枝到基材的表面。 膜可以用于广泛的流体分离，例如微滤，纳滤，超滤作为用于膜蒸馏的膜接触器和用于流体的脱气和脱水。 膜可以进一步含有叠加在多孔聚（芳醚酮）基底上的致密超薄全氟烃层，并可用作膜接触器或气体分离。 用于天然气处理和气体脱水的膜。