Polymer Production at Supersolution Conditions
    1.
    发明申请
    Polymer Production at Supersolution Conditions 有权
    超分解条件下的聚合物生产

    公开(公告)号:US20080090974A1

    公开(公告)日:2008-04-17

    申请号:US11954273

    申请日:2007-12-12

    IPC分类号: C08F4/16 C08F2/01 C08F2/04

    摘要: This invention relates to a process to polymerize olefins comprising contacting propylene, at a temperature of 65° C. to 150° C. and a pressure of 1.72 to 34.5 MPa, with: 1) a catalyst system comprising one or more activators and one or more nonmetallocene metal-centered, heteroaryl ligand catalyst compounds, where the metal is chosen from the Group 4, 5, 6, the lanthanide series, or the actinide series of the Periodic Table of the Elements, 2) optionally one or more comonomers selected from ethylene and C4 to C12 olefins, 3) diluent or solvent, and 4) optionally scavenger, wherein: a) the olefin monomers and any comonomers are present in the polymerization system at 30 wt % or more, b) the propylene is present in the feed at 80 wt % or more, c) the polymerization occurs at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure greater than 1 MPa below the cloud point pressure of the polymerization system, and d) the polymerization occurs: (1) at a temperature below the critical temperature of the polymerization system, or (preferably and) (2) at a pressure below the critical pressure of the polymerization system.

    摘要翻译: 本发明涉及聚合烯烃的方法,包括使丙烯在65℃至150℃的温度和1.72至34.5MPa的压力下接触,其中:1)包含一种或多种活化剂和一种或多种活化剂的催化剂体系 更多的非金属茂金属中心的杂芳基配位体催化剂化合物,其中金属选自第4,5,6族,镧系元素或元素周期表的锕系列,2)任选的一种或多种共聚单体,其选自 乙烯和C 4至C 12烯烃,3)稀释剂或溶剂,和4)任选的清除剂,其中:a)烯烃单体和任何共聚单体在聚合体系中以30重量%或更多存在,b)丙烯存在于 进料为80重量%以上,c)在高于聚合体系的固体 - 流体相转变温度的温度和低于聚合体系浊点压力1MPa的压力下进行聚合,和d)聚合反应 n发生:(1)在低于聚合体系临界温度的温度下,或(优选和)(2)在低于聚合体系临界压力的压力下。

    Preparation of polymerization catalyst activators utilizing indole-modified silica supports
    3.
    发明申请
    Preparation of polymerization catalyst activators utilizing indole-modified silica supports 有权
    使用吲哚改性二氧化硅载体制备聚合催化剂活化剂

    公开(公告)号:US20070055028A1

    公开(公告)日:2007-03-08

    申请号:US11514007

    申请日:2006-08-31

    IPC分类号: C08F4/44

    摘要: A process for polymerizing propylene is provided. The process comprises contacting propylene and optionally one or more monomers with a catalyst system comprising a bis-indenyl Group 4 metallocene compound supported on silica, the silica treated with one or more organoaluminum compounds and one or more heterocyclic compounds, under slurry conditions in the presence of hydrogen at a temperature of about 50° C. to about 160° C. and a pressure of from about 3 MPa to about 5 MPa to provide a catalyst activity of greater than 30,000 pounds of product per pound of catalyst; and then recovering isotactic polypropylene having a melt flow rate of 20 dg/min or less as measured according to ASTM D-1238 at 230° C. and 2.16 kg.

    摘要翻译: 提供聚合丙烯的方法。 该方法包括使丙烯和任选的一种或多种单体与催化剂体系接触,所述催化剂体系包含负载在二氧化硅上的双茚基基团4金属茂化合物,在一定条件下,在一定条件下,在一种或多种有机铝化合物和一种或多种杂环化合物 的氢气在约50℃至约160℃的温度和约3MPa至约5MPa的压力下提供大于30,000磅每磅催化剂的产物的催化剂活性; 然后回收根据ASTM D-1238在230℃和2.16kg下测量的熔体流动速率为20dg / min或更低的全同立构聚丙烯。