利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

48 条记录 (耗时 0.022 秒)

    PROCESS FOR PREPARING ZIEGLER-NATTA PRODUCED POLYETHYLENE BLENDS
    41.
    发明申请
    PROCESS FOR PREPARING ZIEGLER-NATTA PRODUCED POLYETHYLENE BLENDS 有权
    制备ZIEGLER-NATTA生产的聚乙烯共混物的方法

    公开(公告)号：US20130338314A1

    公开(公告)日：2013-12-19

    申请号：US14003214

    申请日：2012-03-02

    申请人： Daan Dewachter ,  Eric Damme

    发明人： Daan Dewachter ,  Eric Damme

    IPC分类号： C08L23/06

    CPC分类号： C08L23/06 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2308/00 ,  C08L2314/02 ,  C08L2666/06

    摘要： A process for preparing a multimodal polyethylene product with at least two different polyethylene resins can include producing a first polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The Ziegler-Natta catalyst used for the production of the first polyethylene resin has an average particle size (D50) of at most 15 μm. The HLMI of the first polyethylene resin is between 0.01 and 5 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The MI2 of the second polyethylene resin is between 1 and 150 g/10 min. The process can include physically blending together the first and second polyethylene resins to produce a multimodal polyethylene product. The physical blending can be performed in a device for continuously melting and blending the first and second polyethylene resins.

    摘要翻译： 用至少两种不同聚乙烯树脂制备多峰聚乙烯产品的方法可包括在齐格勒 - 纳塔催化剂存在下，在反应器中制备第一种聚乙烯树脂。 用于生产第一聚乙烯树脂的齐格勒 - 纳塔催化剂的平均粒度（D50）至多为15μm。 第一聚乙烯树脂的HLMI为0.01至5g / 10min。 该方法可以包括在齐格勒 - 纳塔催化剂存在下在反应器中单独生产第二聚乙烯树脂。 第二聚乙烯树脂的MI2为1-150克/ 10分钟。 该方法可以包括将第一和第二聚乙烯树脂物理混合在一起以产生多峰聚乙烯产品。 物理混合可以在用于连续熔融和共混第一和第二聚乙烯树脂的装置中进行。

    Method for replacing compatible ethylene polymerization catalysts
    42.
    发明授权
    Method for replacing compatible ethylene polymerization catalysts 有权
    替代相容乙烯聚合催化剂的方法

    公开(公告)号：US08609791B2

    公开(公告)日：2013-12-17

    申请号：US13514101

    申请日：2010-12-17

    申请人： Daan Dewachter ,  Martine Slawinski

    发明人： Daan Dewachter ,  Martine Slawinski

    IPC分类号： C08F2/00 ,  C08F4/00 ,  C08F110/02

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2410/05 ,  C08F2/01

    摘要： The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, decreasing the concentration of said first ethylene polymerization catalyst in said mixing vessel, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, progressively replacing said first ethylene polymerization catalyst by said second ethylene polymerization catalyst and said first diluent by said second diluent, increasing the concentration of said second ethylene polymerization catalyst in said mixing vessel, sequentially transferring said first ethylene polymerization catalyst and said second ethylene polymerization catalyst from said mixing vessel to an ethylene polymerization reactor.

    摘要翻译： 本发明涉及一种用于优化至少两种乙烯聚合催化剂顺序进料到乙烯聚合反应器的方法，包括：将混合容器转移到第一乙烯聚合催化剂和第一稀释剂中，降低所述第一乙烯聚合的浓度 在所述混合容器中，将第二乙烯聚合催化剂和第二稀释剂转移到所述混合容器中，通过所述第二稀释剂逐渐用所述第二乙烯聚合催化剂和所述第一稀释剂代替所述第一乙烯聚合催化剂，增加所述第二乙烯的浓度 聚合催化剂，将所述第一乙烯聚合催化剂和所述第二乙烯聚合催化剂从所述混合容器依次转移到乙烯聚合反应器中。

    Polymerization process with improved polymer homogeneity
    43.
    发明授权
    Polymerization process with improved polymer homogeneity 有权
    具有改善的聚合物均匀性的聚合方法

    公开(公告)号：US08513365B2

    公开(公告)日：2013-08-20

    申请号：US13376522

    申请日：2010-06-18

    申请人： Daan Dewachter

    发明人： Daan Dewachter

    IPC分类号： C08F2/00 ,  C08F210/00 ,  F01N3/20

    CPC分类号： B01J8/001 ,  B01J19/24 ,  B01J19/2415 ,  B01J19/2435 ,  B01J2219/00069 ,  B01J2219/00164 ,  C08F210/16 ,  Y10T137/86485 ,  C08F2/14 ,  C08F2/38 ,  C08F210/14 ,  C08F2500/12

    摘要： The present invention relates to a process for the polymerization of an olefin monomer. In particular, the present invention relates to a process for the polymerization of an olefin monomer and one or more optional comonomers in presence of a polymerization catalyst and hydrogen, said process being characterized by an improved control of the hydrogen concentration in the polymerization reactor. In addition, the present invention provides for an improved hydrogen feeding system to a polymerization reactor. Furthermore, the present invention provides for a polymerization reactor comprising such an improved hydrogen feeding system.

    摘要翻译： 本发明涉及烯烃单体的聚合方法。 特别地，本发明涉及在聚合催化剂和氢存在下聚合烯烃单体和一种或多种任选的共聚单体的方法，所述方法的特征在于改进了对聚合反应器中氢浓度的控制。 此外，本发明提供了一种改进的聚合反应器的氢气供给系统。 此外，本发明提供一种包含这种改进的氢气供给系统的聚合反应器。

    Method of feeding catalyst
    45.
    发明申请
    Method of feeding catalyst 审中-公开
    进料催化剂的方法

    公开(公告)号：US20130118592A1

    公开(公告)日：2013-05-16

    申请号：US13812720

    申请日：2011-07-29

    申请人： Daan Dewachter ,  Benoît Decouvelaere ,  Louis Fouarge

    发明人： Daan Dewachter ,  Benoît Decouvelaere ,  Louis Fouarge

    IPC分类号： F16K1/32

    CPC分类号： F16K1/32 ,  B01J4/007 ,  B01J8/0015 ,  B01J8/002 ,  B01J2208/00752 ,  C08F210/16 ,  Y10T137/0318 ,  C08F2/14 ,  C08F2/01 ,  C08F210/14

    摘要： The present invention relates to a method of continuously feeding catalyst slurry into an olefin polymerization reactor comprising the steps of: a) continuously feeding catalyst slurry into the reactor through a catalyst feeding line and then through a valve connected to the wall of the reactor, wherein said valve comprises a piston device comprising an actuator and a hollow casing, wherein said piston is connected to the actuator and wherein said piston is arranged in the hollow casing; and b) closing said valve by moving the piston through at least part of said valve towards the reactor and at least until the wall of the reactor, upon at least partial blockage of said valve.

    摘要翻译： 本发明涉及一种将催化剂浆料连续供入烯烃聚合反应器的方法，包括以下步骤：a）通过催化剂进料管线将催化剂浆料连续供入反应器中，然后通过连接到反应器壁的阀，其中 所述阀包括活塞装置，其包括致动器和中空壳体，其中所述活塞连接到所述致动器，并且其中所述活塞设置在所述中空壳体中; 以及b）通过使所述活塞通过所述阀的至少一部分朝向所述反应器移动并至少直到所述反应器的壁至少部分地阻塞所述阀来关闭所述阀。