Process for preparing polypropylene alloys
    1.
    发明授权
    Process for preparing polypropylene alloys 有权
    制备聚丙烯合金的方法

    公开(公告)号:US06469110B1

    公开(公告)日:2002-10-22

    申请号:US09446333

    申请日:2000-02-14

    IPC分类号: C08F214

    摘要: Described herein is a process and an apparatus for polymerizing propylene. The process comprises carrying out the polymerization in at least one slurry reactor and at least one gas phase reactor without recycling unreacted monomers to the slurry reactor. A polymerization product containing unreacted monomers is recovered from the slurry reactor and volatile components are separated from the product in a separation unit. The polymerization product is recovered from the separation unit and conducted to a first gas phase reactor; and at least a part of the volatile components a recovered from the separation unit and conducted them to a gas phase reactor. At least 10% of the polymer product is produced in the gas phase reactor(s). The invention provides propylene homopolymers and alloys of propylene homopolymers and copolymers having good impact and creep properties.

    摘要翻译: 本文描述了用于聚合丙烯的方法和设备。 该方法包括在至少一个浆料反应器和至少一个气相反应器中进行聚合,而不将未反应的单体再循环到浆料反应器中。 从浆料反应器回收含有未反应单体的聚合产物,并在分离单元中将挥发性组分与产物分离。 从分离单元回​​收聚合产物,并将其导入第一气相反应器; 以及从分离单元回​​收的至少一部分挥发性成分a,并将其导入气相反应器。 在气相反应器中产生至少10%的聚合物产物。 本发明提供丙烯均聚物和具有良好冲击和蠕变性能的丙烯均聚物和共聚物的合金。

    Method and apparatus for preparing polymers
    3.
    发明授权
    Method and apparatus for preparing polymers 有权
    制备聚合物的方法和装置

    公开(公告)号:US06476161B1

    公开(公告)日:2002-11-05

    申请号:US09554580

    申请日:2000-07-17

    IPC分类号: C08F214

    摘要: The present invention concerns a method and an apparatus of introducing polymer slurry obtained from a slurry reactor into a gas phase reactor containing a fluidized bed (C, D). According to the present invention, the content of the slurry reactor (R1) is conducted directly to the fluidized bed reactor (R2) as a multiphase stream comprising polymer, active catalyst and reaction medium using at least one feed line (10; 11; 12), and the stream is fed below a first fluidized zone (C) of the gas phase reactor via inlet pipe protruding into the fluidized bed in order to increase the once-through conversion of the process. By means of the invention, the amount of unreacted monomers which needs to be recirculated is minimized and investment and operation costs of the recovery section are greatly reduced.

    摘要翻译: 本发明涉及将从淤浆反应器获得的聚合物淤浆引入含有流化床(C,D)的气相反应器中的方法和装置。 根据本发明,浆料反应器(R1)的含量使用至少一条进料管线(10; 11; 12)作为包含聚合物,活性催化剂和反应介质的多相流直接进入流化床反应器(R2) ),并且通过引入流化床的入口管将料流进料到气相反应器的第一流化区(C)下方,以增加该方法的直接转化。 通过本发明,需要再循环的未反应单体的量被最小化,并且大大降低了回收段的投资和操作成本。

    Process to Reduce Polyolefins with Extra Low Impurity Content
    4.
    发明申请
    Process to Reduce Polyolefins with Extra Low Impurity Content 有权
    降低杂质含量低的聚烯烃的方法

    公开(公告)号:US20100234541A1

    公开(公告)日:2010-09-16

    申请号:US12301927

    申请日:2007-05-22

    IPC分类号: C08F2/01

    摘要: A process for producing polyolefins, which includes polymerizing at least one olefin monomer, separating at least a part of the reaction mixture, dividing the separated reaction mixture into a polymer-lean fraction and a polymer-rich fraction, and subjecting at least a part of the polymer-lean fraction to a purification step prior to recycling back to the polymerization of at least one olefin monomer. The obtained polyolefins particularly have a low content of volatile low molecular weight compounds, a low content of low-molecular weight polyolefin waxes and a low content of residues derived from the catalyst employed.

    摘要翻译: 一种制备聚烯烃的方法,其包括聚合至少一种烯烃单体,分离至少一部分反应混合物,将分离的反应混合物分成富含贫聚物的部分和富含聚合物的级分,并将至少一部分 将贫聚合物馏分回收至至少一种烯烃单体的聚合之前的纯化步骤。 所得聚烯烃特别具有低含量的挥发性低分子量化合物,低含量的低分子量聚烯烃蜡和低含量的由所用催化剂衍生的残余物。

    Process And Apparatus For Producing Olefin Polymers
    5.
    发明申请
    Process And Apparatus For Producing Olefin Polymers 有权
    用于生产烯烃聚合物的工艺和设备

    公开(公告)号:US20080039597A1

    公开(公告)日:2008-02-14

    申请号:US11578138

    申请日:2005-04-29

    IPC分类号: C08J11/04 B01J19/00

    摘要: The present invention concerns a process and an apparatus for continuous polymerisation of olefin monomers. In particular, the present invention concerns a process and an apparatus for continuous polymerisation olefin monomers like ethylene and other monomers, wherein an olefin monomer is polymerised in slurry phase in an inert hydrocarbon diluent in at least one loop reactor. According to the invention, a polymer slurry is continuously withdrawn from the loop reactor and concentrated. The concentrated slurry is conducted to a flash unit in order to remove the remaining fluid phase, and gas obtained is compressed in a flash gas compressor before it is being fed to a distillation section. By means of the present invention it is possible reduce the size of the flash gas compressor and the capacity of the distillation sections. This significantly reduces investment cost for a continuously operated polymerization apparatus.

    摘要翻译: 本发明涉及烯烃单体连续聚合的方法和设备。 特别地,本发明涉及用于连续聚合烯烃单体如乙烯和其它单体的方法和设备,其中烯烃单体在淤浆相中在惰性烃稀释剂中在至少一个环管反应器中聚合。 根据本发明,聚合物浆液从环流反应器中连续取出并浓缩。 将浓缩的浆料送入闪蒸装置以除去剩余的流体相,所获得的气体在进料到蒸馏段之前在闪蒸气体压缩机中被压缩。 通过本发明,可以减小闪蒸气体压缩机的尺寸和蒸馏段的容量。 这显着降低了连续操作的聚合装置的投资成本。

    Apparatus for the polymerization of olefin monomers
    8.
    发明授权
    Apparatus for the polymerization of olefin monomers 失效
    烯烃单体聚合装置

    公开(公告)号:US06461574B2

    公开(公告)日:2002-10-08

    申请号:US09756829

    申请日:2001-01-08

    IPC分类号: B01J838

    摘要: An apparatus for the polymerization of olefin monomers comprising means for forming a fluid stream containing catalyst, means for continuously feeding the fluid stream into an elongated polymerization reactor having at least two successive chambers separated by dividing plates having a diameter slightly smaller than that of the polymerization rector, means for feeding monomers, and an optional catalyst and donor into the polymerization reactor under temperature conditions to polymerize the olefin while maintaining a mixed flow in the chambers to polymerize the monomers and optional comonomer in the fluid, and means for removing the resultant polymer slurry from the polymerization reactor.

    摘要翻译: 用于聚合烯烃单体的装置包括用于形成含有催化剂的流体物流的装置,用于将流体流连续供给到具有至少两个连续室的细长聚合反应器的装置,所述连续室由具有比聚合物的直径稍小的直径的分隔板分隔开 反应器,用于将单体进料的方法和任选的催化剂和供体在温度条件下进入聚合反应器以聚合烯烃,同时保持室内的混合流动以使单体和任选的共聚单体聚合在流体中,以及用于除去所得聚合物的装置 来自聚合反应器的浆料。