Functional polymers via surface modifying agents, and methods for polymeric surface modification
    1.
    发明申请
    Functional polymers via surface modifying agents, and methods for polymeric surface modification 有权
    通过表面改性剂的官能聚合物,以及用于聚合物表面改性的方法

    公开(公告)号:US20060194065A1

    公开(公告)日:2006-08-31

    申请号:US11374421

    申请日:2006-03-14

    IPC分类号: B32B27/40

    摘要: Polymers, and particularly conventional commodity bulk polymers, are modified to have a surface activity of interest using a surface modifying polymer that includes a moiety that favors migration to the surface of the bulk polymer together with a moiety provides the activity of interest (e.g., biocidal, wettability modifying (hydrophobic or hydrophilic), resistance to radiant energy, providing a functional group for functionalizing the surface, etc.). The surface modifying polymer is combined with the bulk polymer, and, due to the presence of the moiety that favors migration, concentrates primarily on the surface of the bulk polymer such that the moiety that provides the activity of interest is located primarily on the surface of the bulk polymeric article which is produced. Advantageously, only a minimal amount (such as, e.g., about 2 weight %) of polymeric surface modifier is needed. Being able to achieve desired properties (such as biocidal activity, wettability modification, etc.) without needing much polymeric surface modifier is highly advantageous.

    摘要翻译: 使用表面改性聚合物改性聚合物,特别是常规的商品本体聚合物以具有感兴趣的表面活性,所述表面改性聚合物包括有利于与本体聚合物表面迁移的部分以及部分提供感兴趣的活性(例如,杀生物剂 ,润湿性改性(疏水性或亲水性),耐辐射能,提供功能性表面官能团等)。 表面改性聚合物与本体聚合物组合,并且由于存在有利于迁移的部分,主要集中在本体聚合物的表面上,使得提供感兴趣的活性的部分主要位于 生产的散装聚合物制品。 有利地,仅需要最小量(例如约2重量%)的聚合物表面改性剂。 能够实现期望的性质(例如杀生物活性,润湿性改性等)而不需要很多聚合物表面改性剂是非常有利的。

    Self-humidifying fuel cell
    2.
    发明授权
    Self-humidifying fuel cell 有权
    自加油燃料电池

    公开(公告)号:US06207312B1

    公开(公告)日:2001-03-27

    申请号:US09156714

    申请日:1998-09-18

    IPC分类号: H01M800

    摘要: A self-humidifying polymer electrolyte membrane (PEM) fuel cell assembly has an ion-exchange membrane interposed between hydrogen and oxygen diffusion layers to form a membrane electrode assembly (MEA). The MEA is in turn interposed between a pair of current collector plates having flow field channels for flowing the reactants adjacent the respective diffusion layers to produce corresponding anodic and cathodic electrochemical reactions. Various embodiments of the assembly incorporate one or more of the following features: interdigitated flow field channels, countercurrent reactant flows, opposing channel alignment, and uncatalyzed membrane hydration enhancement zones.

    摘要翻译: 自加湿聚合物电解质膜(PEM)燃料电池组件具有介于氢和氧扩散层之间的离子交换膜,以形成膜电极组件(MEA)。 MEA又插入在具有流场通道的一对集电板之间,用于使邻近相应扩散层的反应物流动,以产生相应的阳极和阴极电化学反应。 组件的各种实施例包含一个或多个以下特征:交错流场通道,逆流反应物流,相对的通道对准和未催化的膜水合增强区。

    Method for polymeric surface modification
    8.
    发明申请
    Method for polymeric surface modification 审中-公开
    聚合物表面改性方法

    公开(公告)号:US20060088716A1

    公开(公告)日:2006-04-27

    申请号:US11289422

    申请日:2005-11-30

    申请人: Kenneth Wynne

    发明人: Kenneth Wynne

    IPC分类号: B32B27/40

    摘要: Polymers, and particularly conventional commodity bulk polymers, are modified to have a surface activity of interest using a surface modifying polymer that includes a moiety that favors migration to the surface of the bulk polymer together with a moiety provides the activity of interest (e.g., biocidal, wettability modifying (hydrophobic or hydrophilic), resistance to radiant energy, providing a functional group for functionalizing the surface, etc.). The surface modifying polymer is combined with the bulk polymer, and, due to the presence of the moiety that favors migration, concentrates primarily on the surface of the bulk polymer such that the moiety that provides the activity of interest is located primarily on the surface of the bulk polymeric article which is produced.

    摘要翻译: 使用表面改性聚合物改性聚合物,特别是常规的商品本体聚合物以具有感兴趣的表面活性,所述表面改性聚合物包括有利于与本体聚合物的表面迁移的部分以及部分提供感兴趣的活性(例如,杀生物剂 ,润湿性改性(疏水性或亲水性),耐辐射能,提供功能性表面官能团等)。 表面改性聚合物与本体聚合物组合,并且由于存在有利于迁移的部分,主要集中在本体聚合物的表面上,使得提供感兴趣的活性的部分主要位于 生产的散装聚合物制品。

    Fluoropolymer-carbon dioxide compositions and methods of processing fluoropolymers
    9.
    发明授权
    Fluoropolymer-carbon dioxide compositions and methods of processing fluoropolymers 失效
    含氟聚合物 - 二氧化碳组合物和加工含氟聚合物的方法

    公开(公告)号:US06960633B2

    公开(公告)日:2005-11-01

    申请号:US10268931

    申请日:2002-10-11

    发明人: Younosuke Ohsaka

    摘要: Fluoropolymer materials containing tetrafluoroethylene monomers, such as PTFE, are significantly swollen by supercritical carbon dioxide at high temperatures and pressures. The swollen fluoropolymer is processable by molding, extrusion, and other techniques. In addition, the fluoropolymer may be sintered at significantly lower temperatures compared to a nonswollen fluoropolymer material. The melting temperature of fluorinated polymers containing tetrafluoroethylene and triflouroethylene monomers which are swollen with supercritical carbon dioxide is significantly reduced, thereby permitting manufacturing operations such as extruding and molding to be performed at lower temperatures and with reduced risk of decomposition.

    摘要翻译: 含有四氟乙烯单体(如PTFE)的含氟聚合物材料在高温和高压下被超临界二氧化碳显着溶胀。 溶胀的含氟聚合物可通过模塑,挤出和其它技术加工。 此外,与非溶胀的含氟聚合物材料相比,含氟聚合物可以在显着更低的温度下烧结。 包含用超临界二氧化碳溶胀的四氟乙烯和三氟乙烯单体的氟化聚合物的熔融温度显着降低,从而允许诸如挤出和成型的制造操作在较低温度下进行并降低分解的风险。