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    Catalyst dispersion having improved stability against phase separation
    5.
    发明授权
    Catalyst dispersion having improved stability against phase separation 失效
    具有改进的相分离稳定性的催化剂分散体

    公开(公告)号：US4461846A

    公开(公告)日：1984-07-24

    申请号：US479637

    申请日：1983-03-28

    申请人： James J. Harris ,  Donald E. Hostetler ,  G. Stanley Achorn

    发明人： James J. Harris ,  Donald E. Hostetler ,  G. Stanley Achorn

    IPC分类号： C08F4/64 ,  C08F10/00 ,  C08F10/02

    CPC分类号： C08F10/00 ,  C08F10/02 ,  Y10S526/904

    摘要： Catalysts for the polymerization of ethylene or its copolymerization with C.sub.3 -C.sub.2 alpha-monoolefins are often pre-activated by polymerizing a small amount of C.sub.4 -C.sub.12 alpha-monoolefin onto the catalyst in the presence of an alkyl aluminum compound. The resultant pre-activated catalyst component is used in the form of a dispersion in an inert solvent. The dispersions have a tendency to separate into two phases rapidly and are thus difficult to add uniformly to a polymerization reaction. When the alkyl aluminum compound is replaced by a synergistic mixture of an alkyl aluminum choride and an oxygen-containing aluminum compound having oxygen attached to at least one aluminum valence, a stable dispersion is formed which will not separate into two phases for long periods of time.

    摘要翻译： 用于聚合乙烯或与C3-C2α-单烯烃共聚的催化剂通常在烷基铝化合物存在下将少量的C 4 -C 12α-单烯烃聚合到催化剂上来预活化。 所得预活化催化剂组分以惰性溶剂中分散体的形式使用。 分散体具有快速分离成两相的趋势，因此难以均匀地添加到聚合反应中。 当烷基铝化合物被烷基铝氯化物与具有连接至少一个铝价的氧的含氧铝化合物的协同混合物代替时，形成稳定的分散体，其不会长时间分离成两相 。

    Polymerization process
    6.
    发明授权
    Polymerization process 失效
    聚合过程

    公开(公告)号：US4845178A

    公开(公告)日：1989-07-04

    申请号：US73340

    申请日：1987-07-13

    申请人： Donald E. Hostetler ,  Robert J. Kostelnik ,  Zung-Jung Shanti In

    发明人： Donald E. Hostetler ,  Robert J. Kostelnik ,  Zung-Jung Shanti In

    IPC分类号： C08F4/44 ,  C08F10/00 ,  C09K3/00 ,  C10L1/16

    CPC分类号： C10L10/08 ,  C08F10/00 ,  C09K3/00 ,  C10L1/1641

    摘要： The hydrocarbon fluid friction reducing properties of homopolymers of alpha-monoolefins having 6 to 30 carbon atoms or copolymers of two or more alpha-monoolefins having 2 to about 30 carbon atoms is improved by polymerizing the monomers in the liquid state by means of a titanium halide catalyst and a two-component activator system comprised of a dialkylaluminum halide compound and a dialkylaluminum alkoxide compound.

    摘要翻译： 具有6至30个碳原子的α-单烯烃均聚物或具有2至约30个碳原子的两个或更多个α-单烯烃的共聚物的碳氢化合物流体摩擦降低性能通过使钛卤化物 催化剂和由卤化二烷基铝化合物和二烷基铝醇盐化合物组成的双组分活化剂体系。

    Catalyst systems for polymerizations at high temperatures
    7.
    发明授权
    Catalyst systems for polymerizations at high temperatures 失效
    用于在高温下聚合的催化剂体系

    公开(公告)号：US4681924A

    公开(公告)日：1987-07-21

    申请号：US454224

    申请日：1982-12-29

    申请人： James J. Harris ,  Donald E. Hostetler ,  G. Stanley Achorn

    发明人： James J. Harris ,  Donald E. Hostetler ,  G. Stanley Achorn

    IPC分类号： C08F4/64 ,  C08F210/02

    CPC分类号： C08F210/02 ,  Y10S526/904

    摘要： Copolymerization of ethylene and a C.sub.3 -C.sub.20 alpha-monoolefin at high temperature gives a low density polyethylene having a density of between 0.91 and 0.93 g/cc. The copolymerizations are accomplished with a catalyst made by co-comminuting an anhydrous magnesium halide, an anhydrous aluminum halide, a titanium compound, and at least one electron donor, and a cocatalyst comprising a synergistic mixture of an alkyl aluminum chloride and an oxygen-containing aluminum compound having oxygen attached to at least one aluminum valence.

    摘要翻译： 乙烯和C3-C20α-单烯烃在高温下的共聚得到密度为0.91〜0.93g / cc的低密度聚乙烯。 共聚合是通过将无水卤化镁，无水卤化铝，钛化合物和至少一种电子给体共共粉碎制备的催化剂和包含烷基氯化铝和含氧的协同混合物的助催化剂 具有连接至至少一种铝价的氧的铝化合物。

    Method of supporting a catalyst on polyolefins
    8.
    发明授权
    Method of supporting a catalyst on polyolefins 失效
    在聚烯烃上负载催化剂的方法

    公开(公告)号：US4407727A

    公开(公告)日：1983-10-04

    申请号：US433566

    申请日：1982-10-08

    申请人： James J. Harris ,  Donald E. Hostetler

    发明人： James J. Harris ,  Donald E. Hostetler

    IPC分类号： C08F4/60 ,  C08F10/00 ,  C08F4/02

    CPC分类号： C08F10/00 ,  Y10S526/904

    摘要： A process is provided for transforming a polyolefin powder into a suitable substrate for the preparation of transition metal catalysts. A powder polyolefin such as polyethylene or polypropylene is treated with a solution of a magnesium alkyl. The solvent is removed by any suitable procedure such as vacuum drying. The powder is then treated with gaseous HCl or other agent suitable for decomposition of the magnesium alkyl. The powder thus prepared is an effective support for preparing high efficiency catalysts such as taught in U.S. Pat. No. 4,136,058. These catalysts give polymers of increased particle size. Polyolefin powder in the absence of such treatment is not effective as a catalyst support and will not give polymers of increased particle size.

    摘要翻译： 提供了一种用于将聚烯烃粉末转化成用于制备过渡金属催化剂的合适底物的方法。 粉末聚烯烃如聚乙烯或聚丙烯用烷基镁溶液处理。 通过任何合适的方法除去溶剂，例如真空干燥。 然后用气态HCl或适于烷基镁分解的其它试剂处理粉末。 如此制备的粉末是制备高效催化剂的有效载体，如美国专利No. 第4,136,058号。 这些催化剂产生粒径增大的聚合物。 不存在这种处理的聚烯烃粉末作为催化剂载体是无效的，并且不会产生粒径增加的聚合物。