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12. 发明授权

US5880055A Catalyst for polymerization of ethylene 失效
标题翻译：乙烯聚合催化剂
公开(公告)号：US5880055A
公开(公告)日：1999-03-09
申请号：US843610
申请日：1997-04-10
申请人： Hilkka Knuuttila , Pekka Sormunen , Eero Iiskola , Eeva-Liisa Lakomaa , Harri Hokkanen
发明人： Hilkka Knuuttila , Pekka Sormunen , Eero Iiskola , Eeva-Liisa Lakomaa , Harri Hokkanen
IPC分类号： B01J37/02 , C08F4/16 , C08F10/00 , B01J37/00
CPC分类号： C08F10/00 , B01J37/0238
摘要： The present invention concerns heterogeneous catalysts for polymerization of olefins. The catalysts include at least one Group IVa metal compound on a solid inorganic oxidic support. According to the invention the catalysts are prepared by vapourizing at least one solid Group IVa metal halide compound and routing the vapour of the metal halide compound into a reaction chamber, wherein the vapour is reacted with the support at a temperature of about 250.degree. to about 450.degree. C. in order to bind said metal halide compound to said support. Any metal compound not bound to said support as well as any volatile reaction products emanating from the reaction between said metal halide compound and said support are then removed from the reaction chamber in the vapour phase. Optionally, the product obtained is treated with an organic aluminum compound to increase the catalytic activity of said catalyst. The catalysts thus prepared are very well suited for polymerization of ethylene or copolymerization of ethylene with other alpha-olefins, such as propylene, butylene, 4-methyl-1-pentene and hexene. A polymerization process employing the novel catalyst will provide products of the Ultra High Molecular Weight-type (UHMWPE) having very broad MWD.
摘要翻译：本发明涉及用于烯烃聚合的多相催化剂。催化剂包括在固体无机氧化物载体上的至少一种IVa族金属化合物。根据本发明，催化剂是通过将至少一种固体IVa族金属卤化物化合物挥发并将金属卤化物化合物的蒸气引导到反应室中制备的，其中蒸气在约250°至约 450℃，以便将所述金属卤化物化合物结合到所述载体上。然后在气相中从反应室中除去未结合到所述载体上的任何金属化合物以及从所述金属卤化物和所述载体之间的反应产生的任何挥发性反应产物。任选地，将获得的产物用有机铝化合物处理以增加所述催化剂的催化活性。如此制备的催化剂非常适合于乙烯的聚合或乙烯与其它α-烯烃如丙烯，丁烯，4-甲基-1-戊烯和己烯的共聚合。采用新型催化剂的聚合方法将提供具有非常宽MWD的超高分子量型（UHMWPE）产品。

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