利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

35 条记录 (耗时 0.041 秒)

    Polymerization reaction system
    17.
    发明授权
    Polymerization reaction system 失效
    聚合反应体系

    公开(公告)号：US08586685B2

    公开(公告)日：2013-11-19

    申请号：US13377205

    申请日：2010-07-20

    申请人： F. David Hussein ,  Michael E. Muhle ,  Ping Cai ,  Mark W. Blood

    发明人： F. David Hussein ,  Michael E. Muhle ,  Ping Cai ,  Mark W. Blood

    IPC分类号： C08F2/12 ,  B01J19/24 ,  C08F10/02

    CPC分类号： C08F10/02 ,  B01J8/22 ,  B01J2208/00256 ,  B01J2208/00274 ,  B01J2208/00283 ,  B01J2208/00734 ,  B01J2219/0025 ,  B01J2219/00254 ,  C08F110/02 ,  C08F210/16 ,  C08F2/34 ,  C08F2/01 ,  C08F2/14 ,  C08F2500/24 ,  C08F210/14

    摘要： A process for the polymerization of olefins is disclosed. The process may include: feeding a catalyst, a liquid diluent, and an olefin to a polymerization vessel having, from a polymerization vessel bottom to a polymerization vessel top, a vapor introduction zone, a three-phase reaction zone and a vapor disengagement zone; contacting the catalyst and olefin under conditions of temperature and pressure in the presence of the liquid diluent as a continuous phase in the three-phase reaction zone to form a solid phase polyolefin; withdrawing a gas phase composition from an outlet in fluid communication with the vapor disengagement zone; circulating the gas phase composition through a gas circulation loop to an inlet in fluid communication with the vapor distribution zone at a rate sufficient to agitate the solid and liquid phases within the three-phase reaction zone; and withdrawing a reaction mixture comprising polyolefin and diluents from the three-phase reaction zone.

    摘要翻译： 公开了一种烯烃聚合方法。 该方法可以包括：将催化剂，液体稀释剂和烯烃进料到聚合容器中，所述聚合容器具有从聚合容器底部到聚合容器顶部的蒸气引入区，三相反应区和蒸气分离区; 在温度和压力条件下，在作为连续相的液体稀释剂存在下在三相反应区中使催化剂和烯烃接触以形成固相聚烯烃; 从与蒸气分离区流体连通的出口抽出气相组合物; 将气相组合物通过气体循环回路循环到与蒸汽分配区流体连通的入口，其速率足以搅拌三相反应区内的固相和液相; 并从三相反应区取出包含聚烯烃和稀释剂的反应混合物。

    Continuity additives and their use in polymerization processes
    18.
    发明授权
    Continuity additives and their use in polymerization processes 有权
    连续性添加剂及其在聚合过程中的应用

    公开(公告)号：US08420733B2

    公开(公告)日：2013-04-16

    申请号：US12673561

    申请日：2008-08-06

    申请人： F. Gregory Stakem ,  Agapios K. Agapiou ,  F. David Hussein

    发明人： F. Gregory Stakem ,  Agapios K. Agapiou ,  F. David Hussein

    IPC分类号： C08F2/44 ,  C08F4/06 ,  C08F4/44 ,  C08F4/60 ,  C07F5/06 ,  B01J31/00

    CPC分类号： C08F6/003 ,  C08F210/16 ,  C08F2410/02 ,  C08F2/005 ,  C08F2/34 ,  C08F210/14 ,  C08F2500/12

    摘要： A continuity additive according to one general approach includes a substance having an ability to reduce, prevent, or mitigate at least one of fouling, sheeting, and static level of a material present in a polymerization reactor system when added to the reactor system in an effective amount, with the proviso that the substance is not a polysulfone polymer, a polymeric polyamine, or an oil-soluble sulfonic acid; and a scavenger contacted with the substance, optionally, the scavenger neutralizing water coming in contact therewith. Additional continuity additives, methods of making continuity additives, and use of continuity additives are also presented.

    摘要翻译： 根据一般方法的连续性添加剂包括具有降低，防止或减轻聚合反应器系统中存在的材料的污垢，片材和静态水平中的至少一种的能力的物质，当加入到反应器系统中时， 量，条件是该物质不是聚砜聚合物，聚合多胺或油溶性磺酸; 和与该物质接触的清除剂，任选地，与其接触的清除剂中和水。 还提出了附加的连续性添加剂，制备连续性添加剂的方法和连续性添加剂的使用。