Chromium-containing catalysts for polymerizing olefins
    2.
    发明授权
    Chromium-containing catalysts for polymerizing olefins 失效
    用于聚合烯烃的含铬催化剂

    公开(公告)号:US4362654A

    公开(公告)日:1982-12-07

    申请号:US263642

    申请日:1981-05-14

    CPC分类号: B01J23/26 C08F10/00

    摘要: Inorganic oxide supported chromium-containing catalysts are improved by depositing the chromium onto the inorganic oxide support in the vapor phase rather than as an inorganic or organic compound. Polymers resulting from polymerizing one or more .alpha.-olefins in the presence of such catalysts exhibit a higher molecular weight as compared to those polymers prepared in the presence of such chromium-containing catalysts prepared in the conventional manner.

    摘要翻译: 无机氧化物负载的含铬催化剂通过将铬沉积在气相中的无机氧化物载体上而不是无机或有机化合物而得到改善。 与在常规方法制备的这种含铬催化剂存在下制备的那些聚合物相比,在这种催化剂存在下聚合一种或多种α-烯烃产生的聚合物表现出较高的分子量。

    Dual, independently supported catalyst mixtures
    3.
    发明授权
    Dual, independently supported catalyst mixtures 失效
    双重独立的催化剂混合物

    公开(公告)号:US4285834A

    公开(公告)日:1981-08-25

    申请号:US108896

    申请日:1979-12-31

    CPC分类号: C08F10/00

    摘要: A catalyst mixture containing at least two independently supported catalysts, at least one of which is an inorganic halide supported titanium and/or vanadium Ziegler type catalyst and at least one other is an inorganic oxide supported, chromium catalyst.These catalyst mixtures are suitable for polymerizing one or more .alpha.-olefins.

    摘要翻译: 一种催化剂混合物,其含有至少两种独立负载的催化剂,其中至少一种是无机卤化物负载的钛和/或钒齐格勒型催化剂,至少另一种是无机氧化物担载的铬催化剂。 这些催化剂混合物适用于聚合一种或多种α-烯烃。

    Organo zirconium-chromium compound, catalyst prepared therefrom and
polymerization of olefins therewith
    5.
    发明授权
    Organo zirconium-chromium compound, catalyst prepared therefrom and polymerization of olefins therewith 失效
    有机锆 - 铬化合物,由其制备的催化剂和烯烃的聚合

    公开(公告)号:US4376065A

    公开(公告)日:1983-03-08

    申请号:US269232

    申请日:1981-06-01

    IPC分类号: C08F4/64 C08F10/00

    CPC分类号: C08F10/00

    摘要: Dual transition metal compounds containing zirconium and chromium are prepared by reacting a tetrahydrocarbyloxy zirconium compound such as tetraisopropoxy zirconium or a tetravalent hydrocarbyloxy zirconium halide such as triisopropoxy zirconium halide with a chromium compound such as CrO.sub.3. These compounds, as well as combinations of other soluble chromium and zirconium compounds, are useful in the polymerization of .alpha.-olefins to produce polymers having a high molecular weight and a narrow molecular weight distribution.

    摘要翻译: 通过四异丙氧基锆化合物如四异丙氧基锆或四异丙氧基锆卤化物如三异丙氧基卤化锆与铬化合物如CrO 3反应制备含锆和铬的双过渡金属化合物。 这些化合物以及其它可溶性铬和锆化合物的组合可用于α-烯烃的聚合以产生具有高分子量和窄分子量分布的聚合物。