Uv-Curable Fuel Cell Sealants and Fuel Cells Formed Therefrom
    54.
    发明申请
    Uv-Curable Fuel Cell Sealants and Fuel Cells Formed Therefrom 有权
    由此形成的可再生燃料电池密封胶和燃料电池

    公开(公告)号:US20090004541A1

    公开(公告)日:2009-01-01

    申请号:US12161237

    申请日:2007-01-16

    IPC分类号: H01M2/08 H01M4/86 H01M4/88

    摘要: A fuel cell, having improved sealing against leakage, includes a fuel cell component having a cured sealant, wherein the cured sealant includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator. The fuel cell component may be a cathode flow field plate, an anode flow field plate, a resin frame, a gas diffusion layer, an anode catalyst layer, a cathode catalyst layer, a membrane electrolyte, a membrane-electrode-assembly frame, and combinations thereof. A method for forming such a fuel cell includes the steps of providing a fuel cell component including a substrate; providing a mold having a cavity; positioning the mold so that the cavity is in fluid communication with the substrate; applying a curable liquid sealant composition into the cavity, wherein the curable sealant composition includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator; and curing the composition with actinic radiation.

    摘要翻译: 具有改进的泄漏密封性的燃料电池包括具有固化的密封剂的燃料电池部件,其中固化的密封剂包括遥爪功能聚异丁烯,有机氢硅烷交联剂,铂催化剂和光引发剂。 燃料电池部件可以是阴极流场板,阳极流场板,树脂框架,气体扩散层,阳极催化剂层,阴极催化剂层,膜电解质,膜 - 电极 - 组装框架,以及 其组合。 一种形成这种燃料电池的方法包括以下步骤:提供包括基板的燃料电池部件; 提供具有空腔的模具; 定位模具使空腔与衬底流体连通; 将可固化液体密封剂组合物施加到空腔中,其中可固化密封剂组合物包括遥爪功能性聚异丁烯,有机氢硅烷交联剂,铂催化剂和光引发剂; 并用光化辐射固化组合物。

    Process for hydroxyalkylating carboxylic acid-functionalized materials
    55.
    发明授权
    Process for hydroxyalkylating carboxylic acid-functionalized materials 失效
    羟基烷基化羧酸官能化材料的方法

    公开(公告)号:US07354977B1

    公开(公告)日:2008-04-08

    申请号:US09341287

    申请日:1998-01-16

    IPC分类号: C08F8/12

    CPC分类号: C08C19/36

    摘要: The present invention relates to a process for hydroxyalkylating terminal carboxylic acid groups. More specifically, this invention provides a process for preparing hydroxyl-functionalized materials, such as butadiene nitrile polymers, from carboxylic acid-functionalized materials, such as butadiene nitrile polymers, using a carbocyclic carbonate, such as ethylene carbonate, or a carbocyclic sulfite, such as ethylene sulfite.

    摘要翻译: 本发明涉及一种用于羟基烷基化末端羧酸基团的方法。 更具体地,本发明提供了使用碳酸亚碳酯如碳酸亚乙酯或碳环亚硫酸酯等羧酸官能化材料如丁二烯腈聚合物制备羟基官能化材料如丁二烯腈聚合物的方法,例如丁二烯腈聚合物 作为亚硫酸亚乙酯。

    Liquid crystal display devices and method of manufacture
    56.
    发明授权
    Liquid crystal display devices and method of manufacture 失效
    液晶显示装置及制造方法

    公开(公告)号:US5200238A

    公开(公告)日:1993-04-06

    申请号:US766492

    申请日:1991-09-25

    IPC分类号: G02F1/1337 G02F1/139

    摘要: A method of forming liquid crystal alignment layers of high tilt angle, said method comprising preparing a polymeric film of a monomer of the formula IV: ##STR1## wherein X and Y are strong electron withdrawing groups, optionally substituted with or containing Si or Ti, and A is --H or --CH.dbd.CH.sub.2 or, provided that X and Y are both --CN, A may be --R.sup.2 or --CH.dbd.CHR.sup.2 wherein R.sup.2 is hydrocarbyl, aryl or alkaryl; exposing said polymeric film to ultraviolet radiation for sufficient period of time to photochemically modify the polymer and, thereafter, subjecting the modified polymer to a heat treatment in the range of 100.degree.-400.degree. C. for at least 5 seconds.

    摘要翻译: 一种形成高倾斜角的液晶取向层的方法,所述方法包括制备式IV单体的聚合物膜:其中X和Y是强吸电子基团,任选被Si或Ti取代 并且A是-H或-CH = CH 2,或者X和Y都是-CN,A可以是-R2或-CH = CHR2,其中R2是烃基,芳基或烷芳基; 将所述聚合物膜暴露于紫外线辐射足够的时间以光聚合改性聚合物,然后将改性聚合物在100-400℃范围内进行热处理至少5秒。