Polymerization catalyst system comprising heterocyclic fused cyclopentadienide ligands
    3.
    发明授权
    Polymerization catalyst system comprising heterocyclic fused cyclopentadienide ligands 失效
    包含杂环稠合环戊二烯配体的聚合催化剂体系

    公开(公告)号:US06451938B1

    公开(公告)日:2002-09-17

    申请号:US08999214

    申请日:1997-12-29

    IPC分类号: C08F444

    摘要: The invention relates to a polymerization catalyst system comprising a catalytic complex formed by activating a transition metal compound which comprises a metal selected from group 3 through 10 of the periodic table, preferably from group 4, 5, or 6 of the periodic table, and a group 13, 15, or 16 heterocyclic fused cyclopentadienide ligand. In one embodiment the inventive transition metal compound is represented by the [L]mM[A]n(S)o wherein M is a transition metal selected from groups 3 through 10 of the periodic table, and at least one of L is group 13, 15, or 16 heterocyclic fused cyclopentadienide ligand. Also disclosed is a polymerization process utilizing the catalyst systems of the invention. Ethylene polymerizations or copolymerizations with dimethyl (&eegr;5-pentamethylcyclopentadienyl)(1-azaindenyl) zirconium and bis(5-methyl-cyclopenta[b]thiophene) zirconium dichloride, activated by tris(pentafluorophenyl) boron and methylalumoxane, respectively, are illustrated.

    摘要翻译: 本发明涉及一种聚合催化剂体系,其包含通过活化过渡金属化合物而形成的催化络合物,所述过渡金属化合物包含选自元素周期表第3至10族的金属,优选周期表的第4,5或6族, 第13,15或16位杂环稠合环戊二烯配体。 在一个实施方案中,本发明的过渡金属化合物由[L] mM [A] n(S)o表示,其中M是选自周期表的第3至10组的过渡金属,并且L是13族中的至少一个 ,15或16杂环稠合环戊二烯配体。 还公开了利用本发明的催化剂体系的聚合方法。 示出了分别由三(五氟苯基)硼和甲基铝氧烷活化的二甲基(η5-五甲基环戊二烯基)(1-氮杂茚基)锆和二(5-甲基 - 环戊二烯并[b]噻吩)二氯化锆的乙烯聚合或共聚。

    Raney nickel catalysts, a method for producing said raney nickel catalysts and the use of the same for hydrogenating organic compounds
    5.
    发明授权
    Raney nickel catalysts, a method for producing said raney nickel catalysts and the use of the same for hydrogenating organic compounds 失效
    阮内镍催化剂,制备所述雷尼镍催化剂的方法及其用于氢化有机化合物

    公开(公告)号:US06395934B1

    公开(公告)日:2002-05-28

    申请号:US09555445

    申请日:2000-07-19

    IPC分类号: C07C20900

    摘要: Raney nickel catalysts obtainable by a process in which the melt of an alloy comprising 50 to 94 wt. % aluminum, 10 to 50 wt. % nickel, 0 to 20 wt. % iron, 0 to 15 wt. % cerium, cerium mixed metal, vanadium, niobium, tantalum, chromium, molybdenum or manganese and, optionally, further glass-forming elements is allowed to solidify rapidly with a cooling rate of >104 K/s and the rapidly solidified alloy is then subjected to a treatment with organic or inorganic bases are described. A process for the preparation of the Raney nickel catalysts mentioned and their use in the hydrogenation of organic compounds, in particular aromatic nitro compounds, are furthermore described.

    摘要翻译: 阮内镍催化剂可以通过一种方法获得,其中合金的熔体包含50-94wt。 %铝,10〜50wt。 %镍,0〜20wt。 %铁,0〜15wt。 %铈,铈混合金属,钒,铌,钽,铬,钼或锰,并且任选地,另外的玻璃形成元件可以以> 104K / s的冷却速度快速固化,然后对快速固化的合金进行 描述了用于制备所述阮内镍催化剂的方法及其在有机化合物,特别是芳族硝基化合物氢化中的用途。