Common solvent process for producing high molecular weight halobutyl rubber
    1.
    发明授权
    Common solvent process for producing high molecular weight halobutyl rubber 有权
    用于生产高分子量卤代丁基橡胶的常用溶剂方法

    公开(公告)号:US09309333B2

    公开(公告)日:2016-04-12

    申请号:US12999669

    申请日:2009-07-09

    摘要: An integrated process for the solution polymerization and subsequent halogenation of butyl rubber in a common medium is disclosed. The process comprises providing a solution polymerization reactor containing a C6 medium mixed with a monomer mixture comprising at least an isoolefin monomer and a multiolefin monomer in a mass ratio of monomer mixture to medium of from 61:39 to 80:20. Once polymerized, residual unreacted monomer mixture is separated from the rubber solution using a distillation process. The residual monomers may then be purified and recycled back into the reactor. The separated rubber solution is then halogenated. The process obviates the need for separating the rubber from the medium following polymerization, then re-dissolving it in another solvent for halogenation, thereby saving energy cost. The process optionally employs heat exchangers for the reactor feed streams to further reduce energy consumption.

    摘要翻译: 公开了一种用于普通介质中的丁基橡胶的溶液聚合和随后卤化的整合方法。 该方法包括提供一种溶液聚合反应器,其包含与包含至少异构烯烃单体和多烯烃单体的单体混合物的C6介质,其中单体混合物的质量比为61:39至80:20。 一旦聚合,残留的未反应单体混合物就使用蒸馏方法从橡胶溶液中分离出来。 然后可以将残留的单体纯化并循环回到反应器中。 然后将分离的橡胶溶液卤化。 该方法消除了在聚合之后将橡胶与介质分离的需要,然后将其再溶解在另一溶剂中用于卤化,由此节省了能量成本。 该方法任选地使用反应器进料流的热交换器来进一步降低能量消耗。

    Reactor and method for continuous polymerization
    9.
    发明授权
    Reactor and method for continuous polymerization 有权
    反应器和连续聚合方法

    公开(公告)号:US08747756B2

    公开(公告)日:2014-06-10

    申请号:US13381152

    申请日:2010-07-01

    IPC分类号: B01J19/00 C08F2/00

    摘要: The present invention relates to a reactor (10) and a process for continuous polymerization, where the reactor (10) has an essentially tubular reactor housing (16). The reactor housing (16) has a drive (38) which runs along the geometric central axis (12) in the flow direction (22) and is configured as a central shaft. A rotatably arranged scraper or wiper (36) is provided within the reactor housing (16); the scraper or wiper (36) has at least one scraper or wiper blade (42) to run along an interior side (44) of the reactor housing (16). The rotational movement of the scraper or wiper (36) results in radial mixing of a stream within the reactor housing (16) which dominates gravity effects and, by virtue of shaping of the scrapers or wipers, optionally makes plug flow or backflow within the reactor (10) possible. This allows the reaction conditions in the axial direction of the reactor housing (16) to be predicted and individually suitable reaction conditions to be set and controlled along the reactor housing, so that, in particular, a desired molecular weight distribution can be set.

    摘要翻译: 本发明涉及反应器(10)和连续聚合方法,其中反应器(10)具有基本上管状的反应器壳体(16)。 反应器壳体(16)具有在流动方向(22)上沿几何中心轴线(12)延伸并被构造为中心轴的驱动器(38)。 在反应器壳体(16)内设置有可旋转地布置的刮刀(36)。 刮刀或擦拭器(36)具有至少一个沿着反应器壳体(16)的内侧(44)延伸的刮刀或刮片(42)。 刮刀或擦拭器(36)的旋转运动导致反应器壳体(16)内的流的径向混合,其支配重力作用,并且借助于刮板或刮水器的成形,可任选地使反应器内的塞流或回流 (10)可能。 这允许预测反应器壳体(16)的轴向方向的反应条件,并且可以沿着反应器壳体设置和控制各自适当的反应条件,使得特别地可以设定所需的分子量分布。