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26 条记录 (耗时 0.027 秒)

    Catalyst, its production and its use for the gas-phase polymerization of conjugated dienes
    14.
    发明授权
    Catalyst, its production and its use for the gas-phase polymerization of conjugated dienes 失效
    催化剂，其制备及其在共轭二烯气相聚合中的应用

    公开(公告)号：US5858903A

    公开(公告)日：1999-01-12

    申请号：US933597

    申请日：1997-09-18

    申请人： Gerd Sylvester ,  Hugo Vernaleken

    发明人： Gerd Sylvester ,  Hugo Vernaleken

    IPC分类号： C08F2/34 ,  C08F4/52 ,  C08F4/54 ,  C08F4/60 ,  C08F36/04 ,  B01J31/00

    CPC分类号： C08F36/04 ,  Y10S526/901 ,  Y10S526/904

    摘要： Catalysts consisting ofA) an alcoholate of the rare earths, a carboxylate of the rare earths, a complex compound of the rare earths with diketones and/or an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound,B) an aluminium trialkyl, a dialkyl aluminium hydride and/or an alumoxane,C) another Lewis acid andD) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/gare eminently suitable for the polymerization of conjugated dienes, more particularly butadiene, in the gas phase.

    摘要翻译： 由以下组成的催化剂：A）稀土的醇化物，稀土的羧酸盐，稀土与二酮的络合物和/或稀土卤化物的加成化合物与氧或氮给体化合物B， ）三烷基铝，二烷基氢化铝和/或铝氧烷，C）另一种路易斯酸和D）比表面积大于10m 2 / g（BET）的惰性颗粒状无机固体，孔体积为0.3〜 15ml / g非常适合在气相中共轭二烯，更特别是丁二烯的聚合。

    Method for the production of diene rubbers in the gas phase
    16.
    发明授权
    Method for the production of diene rubbers in the gas phase 失效
    在气相中生产二烯橡胶的方法

    公开(公告)号：US5914377A

    公开(公告)日：1999-06-22

    申请号：US813000

    申请日：1997-03-04

    申请人： Gerd Sylvester ,  Hugo Vernaleken

    发明人： Gerd Sylvester ,  Hugo Vernaleken

    IPC分类号： C08C19/08 ,  C08F4/44 ,  C08F36/04 ,  C08F2/34

    CPC分类号： C08C19/08 ,  C08F36/04 ,  Y10S525/938 ,  Y10S526/901

    摘要： Diene rubbers are produced in the gas phase by first polymerizing the dienes or diene mixtures in the presence of a catalyst system, which is based on rare earth compounds, at temperatures of from 0 to 150.degree. C. and at pressures of from 1 mbar to 50 bar, so that a pourable diene rubber having a Mooney viscosity ML (1+4', 100.degree. C.) of 70 to 180 Mooney units is obtained, and subsequently subjecting the pourable diene rubber obtained to a chemical or thermal decomposition reaction until a Mooney viscosity of 10 to 70 Mooney units is obtained.

    摘要翻译： 二烯橡胶在气相中产生，首先在基于稀土化合物的催化剂体系存在下，在0至150℃的温度和1毫巴至约1巴的压力下聚合二烯或二烯混合物 50巴，使得具有70至180门尼单位的门尼粘度ML（1 + 4'，100℃）的可倾倒二烯橡胶得到，然后将得到的可倾倒二烯橡胶进行化学或热分解反应直到 得到门尼粘度为10至70门尼单位。

    Catalyst its production and its use for the gas-phase polymerization of conjugated dienes
    17.
    发明授权
    Catalyst its production and its use for the gas-phase polymerization of conjugated dienes 失效
    催化剂其生产及其在共轭二烯的气相聚合中的应用

    公开(公告)号：US5908904A

    公开(公告)日：1999-06-01

    申请号：US840902

    申请日：1997-04-17

    申请人： Gerd Sylvester ,  Hugo Vernaleken

    发明人： Gerd Sylvester ,  Hugo Vernaleken

    IPC分类号： C08F2/34 ,  C08F4/52 ,  C08F4/54 ,  C08F4/60 ,  C08F36/04

    CPC分类号： C08F36/04 ,  Y10S526/901 ,  Y10S526/904

    摘要： Catalysts consisting ofA) an alcoholate of the rare earths, a carboxylate of the rare earths, a complex compound of the rare earths with diketones and/or an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound,B) an aluminium trialkyl, a dialkyl aluminium hydride and/or an alumoxane,C) another Lewis acid andD) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/gare eminently suitable for the polymerization of conjugated dienes, more particularly butadiene, in the gas phase.

    摘要翻译： 由以下组成的催化剂：A）稀土的醇化物，稀土的羧酸盐，稀土与二酮的络合物和/或稀土卤化物的加成化合物与氧或氮给体化合物B， ）三烷基铝，二烷基氢化铝和/或铝氧烷，C）另一种路易斯酸和D）比表面积大于10m 2 / g（BET）的惰性颗粒状无机固体，孔体积为0.3〜 15ml / g非常适合在气相中共轭二烯，更特别是丁二烯的聚合。

    Method of and apparatus for shutting down a gas-cooled nuclear reactor
    19.
    发明授权
    Method of and apparatus for shutting down a gas-cooled nuclear reactor 失效
    关闭气冷式核反应堆的方法和装置

    公开(公告)号：US4279697A

    公开(公告)日：1981-07-21

    申请号：US964937

    申请日：1978-11-30

    申请人： Theodor Overhoff ,  Rudolf Schulten ,  Jasbir Singh ,  Gerd Sylvester ,  Josef Witte

    发明人： Theodor Overhoff ,  Rudolf Schulten ,  Jasbir Singh ,  Gerd Sylvester ,  Josef Witte

    IPC分类号： G21C9/033 ,  G21C7/22 ,  G21C9/02 ,  G21C7/06

    CPC分类号： G21C9/02 ,  G21C7/22 ,  Y02E30/33 ,  Y02E30/39

    摘要： A gas-cooled nuclear reactor whose nuclear-fuel elements are constituted by graphite-encapsulated nuclear fuel particles and have graphite coatings is shut down in accordance with the present invention by introducing into the primary coolant gas circulation, a gadolinium-containing substance which is dispersed in the primary cooling gas before the latter enters the space between the fuel elements within the reactor core so that the gadolinium-containing substance is at least partly deposited on the free graphitic surfaces of the fuel elements.

    摘要翻译： 一种气体冷却的核反应堆，其核燃料元件由石墨包封的核燃料颗粒构成并具有石墨涂层，根据本发明通过将主要的冷却剂气体循环引入分散的含钆物质来关闭 在第一冷却气体中，其在后者进入反应堆堆芯内的燃料元件之间的空间中，使得含钆物质至少部分地沉积在燃料元件的游离石墨表面上。

    Catalyst and its preparation and use for the solution polymerization of conjugated dienes
    20.
    发明授权
    Catalyst and its preparation and use for the solution polymerization of conjugated dienes 失效
    催化剂及其制备和用途，用于共轭二烯的溶液聚合

    公开(公告)号：US4242232A

    公开(公告)日：1980-12-30

    申请号：US54632

    申请日：1979-07-03

    申请人： Gerd Sylvester ,  Josef Witte ,  Gunter Marwede

    发明人： Gerd Sylvester ,  Josef Witte ,  Gunter Marwede

    IPC分类号： C08F4/00 ,  C08F4/60 ,  C08F4/62 ,  C08F4/72 ,  C08F36/00 ,  C08F36/04 ,  C08F4/12

    CPC分类号： C08F36/04

    摘要： A catalyst comprising(a) a reaction mixture formed by reacting M(RCO.sub.2).sub.3 with AlR.sub.3'.sup.1(b) AlR.sub.3.sup.2 and / or HAlR.sub.2.sup.2 and(c) a Lewis acidwherein M denotes a trivalent rare earth element with an atomic number of 57 to 71, R denotes a saturated or unsaturated, straight chain or branched chain aliphatic hydrocarbon group having 1 to 20 C-atoms which may be substituted one or more times with cycloalkyl having 5 to 7-atoms and/or phenyl, the carboxyl group being attached to a primary, secondary or tertiary C-atom; a cycloalkyl group having 5 to 7 ring carbon atoms, which may be substituted one or more times with alkyl groups having from 1 to 5 C-atoms; or an aromatic group having from 6 to 10 ring carbon atoms, which may be substituted one or more times with alkyl groups having 1 to 5 C-atoms, and R.sup.1 and R.sup.2 are identical or different, straight chain or branched chain alkyl groups having from 1 to 10 C-atoms. Said catalyst may be used for polymerizing diene monomers in solution. Its production takes place by mixing the components in any order.

    摘要翻译： 一种催化剂，其包含（a）通过M（RCO 2）3与AlR 3'1（b）AlR 32和/或HA 1R 22反应形成的反应混合物和（c）路易斯酸，其中M表示原子序数为57的三价稀土元素 至71，R表示具有1至20个C原子的饱和或不饱和的直链或支链脂族烃基，其可以被具有5至7个原子的环烷基和/或苯基取代一次或多次，羧基为 连接到伯，仲或叔C原子上; 具有5至7个环碳原子的环烷基，其可以被具有1至5个C原子的烷基取代一次或多次; 或具有6至10个环碳原子的芳族基团，其可以被具有1至5个C原子的烷基取代一次或多次，并且R 1和R 2相同或不同，具有直链或支链烷基 1〜10个碳原子。 所述催化剂可用于在溶液中聚合二烯单体。 其生产通过以任何顺序混合组分进行。