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5 条记录 (耗时 0.068 秒)

    Fatty imidazoline crosslinkers for polyurethane, polyurethaneurea and polyurea applications
    1.
    发明授权
    Fatty imidazoline crosslinkers for polyurethane, polyurethaneurea and polyurea applications 失效
    用于聚氨酯，聚氨酯脲和聚脲应用的脂肪咪唑啉交联剂

    公开(公告)号：US5541338A

    公开(公告)日：1996-07-30

    申请号：US408456

    申请日：1995-03-22

    申请人： John E. Dewhurst ,  James S. Emerick ,  Brian E. Farrell

    发明人： John E. Dewhurst ,  James S. Emerick ,  Brian E. Farrell

    IPC分类号： C07D233/54 ,  C08G18/32 ,  C08G18/65

    CPC分类号： C07D233/56 ,  C08G18/3293 ,  C08G18/6535 ,  C08G2101/0008 ,  C08G2101/0025 ,  C08G2120/00 ,  C08G2125/00 ,  C08G2410/00

    摘要： In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethane/urea or polyurea elastomer by reaction injected molding, the improvement which comprises a crosslinking polyol composition which is the reaction product of a C.sub.12 -C.sub.36 fatty acid with a polyalkylene polyamine to yield an intermediate imidazoline-containing polyamine reaction product having at least one C.sub.11 -C.sub.35 alkyl substituent and further reacting the intermediate reaction product with a C.sub.2 -C.sub.21 reactive epoxide.

    摘要翻译： 在与含多异氰酸酯的A侧组合物反应以制备聚氨酯，通过反应注射成型的聚氨酯/脲或聚脲弹性体的活性含氢B侧组合物中，包括作为反应产物的交联多元醇组合物的改进 的C 12 -C 36脂肪酸与聚亚烷基多胺反应以产生具有至少一个C 11 -C 35烷基取代基的中间体咪唑啉多胺反应产物，并进一步使中间反应产物与C2-C21活性环氧化物反应。

    Cryogenic process for the production of methane-free, krypton/xenon product
    2.
    发明授权
    Cryogenic process for the production of methane-free, krypton/xenon product 失效
    用于生产无甲烷，氪/氙产品的低温工艺

    公开(公告)号：US5063746A

    公开(公告)日：1991-11-12

    申请号：US650523

    申请日：1991-02-05

    申请人： Rakesh Agrawal ,  Brian E. Farrell

    发明人： Rakesh Agrawal ,  Brian E. Farrell

    IPC分类号： C01B23/00 ,  F25J3/04

    CPC分类号： F25J3/04412 ,  F25J3/04678 ,  F25J3/04745 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2205/30 ,  F25J2205/60 ,  Y10S62/925

    摘要： The present invention relates to a process for the production of kryton and xenon by using a vapor stream containing greater than 2% oxygen to strip a liquid stream containing oxygen, krypton, methane and xenon of methane. This is accomplished by properly adjusting the liquid to vapor flows in the distillation column. The use of a suitable reflux liquid will decrease the loss of krypton and xenon in the methane laden vapor stream leaving the distillation system.

    摘要翻译： 本发明涉及通过使用含有大于2％氧的蒸气流来生产含有氧，氪，甲烷和甲烷氙的液体流来生产氪和氙的方法。 这是通过在蒸馏塔中适当地调节液体与蒸汽流量来实现的。 使用合适的回流液将减少离开蒸馏系统的含甲烷蒸气流中氪和氙的损失。

    Cryogenic production of krypton and xenon from air
    4.
    发明授权
    Cryogenic production of krypton and xenon from air 失效
    空气中氪和氙的低温生产

    公开(公告)号：US5122173A

    公开(公告)日：1992-06-16

    申请号：US650836

    申请日：1991-02-05

    申请人： Rakesh Agrawal ,  Brian E. Farrell

    发明人： Rakesh Agrawal ,  Brian E. Farrell

    IPC分类号： C01B23/00 ,  F25J3/04

    CPC分类号： F25J3/04412 ,  F25J3/04745 ,  F25J3/04854 ,  F25J2200/34 ,  F25J2200/90 ,  F25J2205/60 ,  F25J2220/52 ,  Y10S62/925

    摘要： The present invention relates to a process for the production of krypton and xenon from a cryogenic air separation unit. The present invention simultaneously concentrates krypton and xenon while rejecting more than 90% of the methane present in the feed stream. The feed to the process is a liquid oxygen stream which is withdrawn from the main distillation column system of the air separation unit. The improvement of the present invention is the discovery that an optimum liquid to vapor flow is required in the oxygen enriching section of the krypton/xenon column. The optimum range is between 0.05 to 0.2, more preferably about 0.1.

    摘要翻译： 本发明涉及一种从低温空气分离装置生产氪和氙的方法。 本发明同时浓缩氪和氙，同时排出进料流中存在的90％以上的甲烷。 该方法的进料是从空气分离单元的主蒸馏塔系统排出的液氧流。 本发明的改进是发现在氪/氙柱的富氧部分中需要最佳的液体至蒸气流。 最佳范围为0.05至0.2，更优选为约0.1。