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29 条记录 (耗时 0.024 秒)

    Catalyst, process for its production and its use for preparing vinyl acetate
    4.
    发明授权
    Catalyst, process for its production and its use for preparing vinyl acetate 失效

    公开(公告)号：US6069268A

    公开(公告)日：2000-05-30

    申请号：US89627

    申请日：1998-06-03

    申请人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kuhlein ,  Johannes Heitz ,  Dieter Bauerle

    发明人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kuhlein ,  Johannes Heitz ,  Dieter Bauerle

    摘要： The invention relates to a process for producing supported shell catalysts comprising noble metals by UV photoreduction of noble metal salt precursors fixed to a support. For this purpose, the shaped supported body is impregnated with suitable noble metal salts which are then reduced to the metals in a zone close to the surface by means of UV radiation, preferably in the absence of a chemical reducing agent. The metal salts in the interior of the pellets which have not been irradiated and therefore have not been reduced are extracted using a solvent.The noble metal shell catalysts produced in this way can be used for many heterogeneously catalyzed reactions such as hydrogenations and oxidations.According to the invention, Pd/Au shell catalysts on porous ceramic supports, e.g. SiO.sub.2 shaped bodies, produced by this process can be used in the synthesis of vinyl acetate.

    Copolymer, process for its preparation and its use as a sorbent
    6.
    发明授权
    Copolymer, process for its preparation and its use as a sorbent 失效
    共聚物，其制备方法及其作为吸附剂的用途

    公开(公告)号：US4576973A

    公开(公告)日：1986-03-18

    申请号：US623708

    申请日：1984-06-22

    申请人： Karl-Heinz Keil ,  Fritz Engelhardt ,  Ulrich Greiner ,  Klaus Kuhlein ,  Reinhold Keller ,  Merten Schlingmann ,  Gerhard Hess

    发明人： Karl-Heinz Keil ,  Fritz Engelhardt ,  Ulrich Greiner ,  Klaus Kuhlein ,  Reinhold Keller ,  Merten Schlingmann ,  Gerhard Hess

    IPC分类号： C08F26/00 ,  B01J20/26 ,  B01J41/14 ,  C08F2/18 ,  C08F30/00 ,  C08F30/04 ,  C08F30/08 ,  C08F226/06 ,  C08J9/00

    CPC分类号： C08F226/06 ,  B01J20/26

    摘要： The crosslinked, porous copolymer in the form of beads and containing 50 to 99.9% by weight of recurring units of a heterocyclic 5-membered ring compound which contains a polymerizable olefinic group and which has at least one protonizable nitrogen atom in the ring, 0.1 to 50% by weight of units of a crosslinking agent, 0 to 25% by weight of units of a polymerizable organoboron or organosilicon compound and, relative to 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinylamide of the general formula I CH.sub.2 .dbd.CH--N(R.sup.1)--C(R.sup.2).dbd.O wherein R.sup.1 denotes hydrogen, methyl or ethyl and R.sup.2 denotes hydrogen or C.sub.1 -C.sub.3 -alkyl, or several such N-vinylamides and 0 to 40% by weight of units of another polymerizable compound or several such compounds, is prepared by inverted suspension polymerization and is used, for example, as a sorbent for acid substances from solutions thereof, preferably aqueous solutions.

    摘要翻译： 珠粒形式的交联的多孔共聚物，其含有50-99.9重量％的含有可聚合烯基的杂环5元环化合物的重复单元，该环化合物在环中具有至少一个可质子化的氮原子，0.1至 50重量％的交联剂单元，0〜25重量％的可聚合有机硼或有机硅化合物的单元，相对于100重量％的上述单元的总和，为5〜350重量％的单元 的通式I CH 2 = CH-N（R 1）-C（R 2）= O的N-乙烯基酰胺，其中R 1表示氢，甲基或乙基，R 2表示氢或C 1 -C 3烷基，或几个这样的N-乙烯基酰胺 和0〜40重量％的其它可聚合化合物或几种这样的化合物的单元通过反相悬浮聚合制备，并且例如用作其溶液，优选水溶液中的酸性物质的吸附剂。

    Process for preparing 2-chlorobenzoxazoles
    7.
    发明授权
    Process for preparing 2-chlorobenzoxazoles 失效
    制备2-氯苯并恶唑的方法

    公开(公告)号：US4517370A

    公开(公告)日：1985-05-14

    申请号：US467742

    申请日：1983-02-18

    申请人： Johannes Becherer ,  Klaus Kuhlein ,  Ulrich Kussmaul

    发明人： Johannes Becherer ,  Klaus Kuhlein ,  Ulrich Kussmaul

    IPC分类号： C07D263/58 ,  C07D263/54

    CPC分类号： C07D263/58

    摘要： In the process for preparing 2-chlorobenzoxazoles of the formula ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently of one another, H, chloro or alkyl having 1 to 4 carbon atoms, which comprises reacting chlorine with 2-mercaptobenzoxazoles of the formula ##STR2## wherein the improvement comprises providing a melt of previously prepared 2-chloro-benzoxazole, adding the 2-mercaptobenzoxazole reactant to the 2-chlorobenzoxazole melt and simultaneously or subsequently passing chlorine into the melt, with the proviso that substituents R.sup.1 to R.sup.4 are identical in both the 2-chlorobenzoxazole melt and the 2-mercaptobenzoxazole reactant.

    摘要翻译： 在制备式（IMAGE）的2-氯苯并恶唑的方法中，其中R 1，R 2，R 3和R 4各自独立地为H，氯或具有1至4个碳原子的烷基，其包括使氯与2-巯基苯并恶唑 其中改进包括提供预先制备的2-氯 - 苯并恶唑的熔体，将2-巯基苯并恶唑反应物加入到2-氯苯并恶唑熔体中，同时或随后将氯进入熔体，条件是取代基R 1 到R4在2-氯苯并恶唑熔体和2-巯基苯并恶唑反应物中都是相同的。

    Process for the preparation of optionally-substituted 1,2,3,4-tetrahydro-9-cyanomethylcarbazol-1-ones
    8.
    发明授权
    Process for the preparation of optionally-substituted 1,2,3,4-tetrahydro-9-cyanomethylcarbazol-1-ones 失效
    制备任选取代的1,2,3,4-四氢-9-氰基甲基咔唑-1-酮的方法

    公开(公告)号：US4485240A

    公开(公告)日：1984-11-27

    申请号：US487020

    申请日：1983-04-19

    申请人： Heinz Bender ,  Veit Buch ,  Rudi Beyerle ,  Klaus Kuhlein

    发明人： Heinz Bender ,  Veit Buch ,  Rudi Beyerle ,  Klaus Kuhlein

    IPC分类号： C07D209/88 ,  C07D209/86

    CPC分类号： C07D209/88

    摘要： In a process for the preparation of optionally-substituted 1,2,3,4-tetrahydro-9-cyanomethylcarbazol-1-ones of the formula ##STR1## wherein R denotes hydrogen, halogen, alkyl or alkoxy, by cyano-methylating optionally substituted 1,2,3,4-tetrahydrocarbazol-1-ones of the formula ##STR2## wherein R has the meanings mentioned above, the starting material of formula II is reacted, in a two-phase system consisting of water and a water-immiscible organic solvent, in the presence of a strong base and a known phase transfer catalyst, with a cyanomethylating agent of the formulaR.sup.1 --CH.sub.2 --CN (III),wherein R.sup.1 denotes halogen or a radical of the formula R.sup.2 --SO.sub.2 --O-- and R.sup.2 represents alkyl, phenyl or substituted phenyl.

    摘要翻译： 在制备式（I）的任选取代的1,2,3,4-四氢-9-氰基甲基咔唑-1-酮的方法中，其中R表示氢，卤素，烷基或烷氧基， 甲基化式（II）的任选取代的1,2,3,4-四氢咔唑-1-酮，其中R具有上述含义，式II的起始原料在由以下组成的两相体系中反应： 水和与水不混溶的有机溶剂，在强碱和已知的相转移催化剂的存在下，与式R 1 -CH 2 -CN（III）的氰甲基化试剂反应，其中R 1表示卤素或式R 2的基团 -SO 2 -O-和R 2表示烷基，苯基或取代的苯基。