Process for preparing polyethylene
    3.
    发明授权
    Process for preparing polyethylene 失效
    制备聚乙烯的方法

    公开(公告)号:US5684097A

    公开(公告)日:1997-11-04

    申请号:US475842

    申请日:1995-06-07

    摘要: A process for producing polyethylene compositions in the presence of a catalytic system of ethylene polymerizing catalyst and cocatalyst in a multistage continuous reaction sequence consisting of successive liquid phase and gas phase polymerizations is disclosed. In the first step of the process, ethylene and optionally hydrogen and comonomer are polymerized in a first loop reactor in a low boiling hydrocarbon medium in the presence of ethylene polymerizing catalyst and cocatalyst. The reaction mixture is then removed and then transferred to a second loop reactor where polymerization is continued by addiing ethylene, hydrogen and optionally inert hydrocarbon, comonomers and cocatalysts. Thereafter, the reaction mixture is removed from the second loop reactor along with an essential part of the reaction medium and transferred to a gas phase reactor where polymerizing is continued in the presence of added ethylene and optionally hydrogen, comonomers and cocatalysts to form an end product. The residence time and reaction temperature being such that the proportion of the ethylene polymer produced in the first loop reactor to the end product of the process is between 1-20%.

    摘要翻译: 在由连续液相和气相聚合组成的多级连续反应序列中,在乙烯聚合催化剂和助催化剂催化体系存在下生产聚乙烯组合物的方法。 在该方法的第一步中,在乙烯聚合催化剂和助催化剂存在下,乙烯和任选的氢和共聚单体在第一回路反应器中在低沸点烃介质中聚合。 然后除去反应混合物,然后转移到第二环管反应器中,其中通过加入乙烯,氢气和任选的惰性烃,共聚单体和助催化剂继续聚合。 此后,将反应混合物与反应介质的主要部分一起从第二环管反应器中除去,并转移到气相反应器中,在气相反应器中,在加入的乙烯和任选的氢,共聚单体和助催化剂的存在下,继续聚合以形成最终产物 。 停留时间和反应温度使得在第一回路反应器中产生的乙烯聚合物与该方法的最终产物的比例为1-20%。

    METHOD FOR MAKING SPECIFIC PRODUCTS FROM POLYSACCHARIDE MOLECULE
    4.
    发明申请
    METHOD FOR MAKING SPECIFIC PRODUCTS FROM POLYSACCHARIDE MOLECULE 审中-公开
    从多糖分子制备特定产品的方法

    公开(公告)号:US20140088252A1

    公开(公告)日:2014-03-27

    申请号:US14006797

    申请日:2012-03-22

    IPC分类号: C08F8/00 C08B15/00 C08B37/00

    摘要: A method for preparing a specific product from a polysaccharide in which at least one hydroxyl of a saccharide unit is substituted with an ether or ester moiety. The ether or ester moiety is provided with ethenyl and/or epoxy functionality for preparing an activatable polysaccharide polymer and the activatable polysaccharide polymer with ethenyl and/or epoxy functionality is optionally reacted with an additional coupling reagent, having at least two coupling functionality for preparing polysaccharide polymer with additional activatable crosslinker. Thereafter, the activatable polysaccharide polymer or the polysaccharide polymer with an additional activatable crosslinker, is activated for crosslinking the polysaccharide polymer with another polysaccharide polymer by reacting the activatable polysaccharide polymer or polysaccharide polymer with an additional activatable crosslinker with a crosslinking initiator for crosslinking the polysaccharide polymer chains with each other, for preparing a product such as hydrogel, film, coating or membrane with polysaccharide backbone.

    摘要翻译: 一种由糖单元的至少一个羟基被醚或酯部分取代的多糖制备特定产品的方法。 醚或酯部分具有用于制备可活化多糖聚合物的乙烯基和/或环氧官能团,并且具有乙烯基和/或环氧官能团的可活化多糖聚合物任选与另外的偶联试剂反应,其具有至少两个用于制备多糖的偶联官能团 聚合物与另外的活化交联剂。 此后,活化的多糖聚合物或具有另外的可活化交联剂的多糖聚合物被活化,以通过使可活化的多糖聚合物或多糖聚合物与另外的可活化的交联剂与交联引发剂反应来交联多糖聚合物与多糖聚合物,以交联多糖聚合物 链条,用于制备具有多糖骨架的产品如水凝胶,膜,涂层或膜。

    METHOD FOR PRODUCING OLEFINIC MONOMERS FROM BIO OIL
    5.
    发明申请
    METHOD FOR PRODUCING OLEFINIC MONOMERS FROM BIO OIL 有权
    从生物油生产烯烃单体的方法

    公开(公告)号:US20120053379A1

    公开(公告)日:2012-03-01

    申请号:US13146857

    申请日:2010-01-29

    IPC分类号: C07C1/20

    摘要: The invention relates to a method of producing olefinic monomers for the production of a polymer. The invention particularly relates to the production of tall oil-based biopolymers, such as polyolefins. In the stages of the method bio oil, with a content of over 50% of fatty acids of tall oil and no more than 25% of resin acids of tall oil, and hydrogen gas are fed into a catalyst bed (7); the oil is catalytically deoxygenated in the bed by hydrogen; the flow exiting the bed is cooled down and divided into a hydrocarbon-bearing liquid phase (10) and a gas phase; and the hydrocarbon-bearing liquid (13) is subjected to steam cracking (4) to provide a product containing polymerizing olefins. The deoxygenation in the bed can be followed by a catalytic cracking or, with a suitable catalyst, the deoxygenation and cracking can be simultaneous. The separated hydrogen-bearing gas phase can be circulated in the process.

    摘要翻译: 本发明涉及生产用于生产聚合物的烯烃单体的方法。 本发明特别涉及妥尔油基生物聚合物如聚烯烃的生产。 在方法生物油的阶段,含量超过50%的妥尔油的脂肪酸和不超过25%的妥尔油的树脂酸,并将氢气进料到催化剂床(7)中; 油通过氢气在床中催化脱氧; 离开床的流被冷却并分成含烃液相(10)和气相; 并对含烃液体(13)进行蒸汽裂化(4)以提供含有聚合烯烃的产物。 床中的脱氧可能是催化裂化,或者使用合适的催化剂,脱氧和裂解可以同时进行。 分离的含氢气相可以在该过程中循环。

    Arrangement in connection with clamping tools
    7.
    发明授权
    Arrangement in connection with clamping tools 失效
    与夹具相关的安排

    公开(公告)号:US06827568B2

    公开(公告)日:2004-12-07

    申请号:US10220569

    申请日:2002-11-29

    IPC分类号: B29C4706

    摘要: An arrangement in connection with clamping tools, which comprises a nozzle structure which consists of coaxially arranged nozzle elements and is arranged to form one or more layers which cover a flexible elongated element on the surface of the flexible elongated element, which passes through the innermost nozzle element, in which arrangement at least the head of the nozzle element, which controls the flexible elongated element, is a separate unit which is arranged to be pushed into its position in the direction of the flexible elongated element and provided with gripping means, which grip the innermost nozzle element of the nozzle structure as the unit arrives at the nozzle element. The joint between the separate unit and the nozzle element of the nozzle structure is arranged to be loosened by repulsive force acting on the separate unit in the direction of the flexible elongated element and the separate unit is arranged to exit from the nozzle structure in the direction of the flexible elongated element.

    摘要翻译: 与夹紧工具相关的装置,其包括由同轴布置的喷嘴元件组成的喷嘴结构,并且布置成形成一个或多个层,其覆盖柔性细长元件的表面上的柔性细长元件,其穿过最内部喷嘴 元件,其中至少控制柔性细长元件的喷嘴元件的头部的布置是分离的单元,其被布置成沿着柔性细长元件的方向被推入其位置并且设置有夹持装置,该夹持装置 作为单元的喷嘴结构的最内部喷嘴元件到达喷嘴元件。 分离单元和喷嘴结构的喷嘴元件之间的接头被布置成通过沿着柔性细长元件的方向作用在单独单元上的排斥力而松开,并且分离单元被布置成沿喷嘴结构的方向 的柔性细长元件。

    Method and apparatus for preparing polymers
    8.
    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 for preparing polypropylene alloys
    9.
    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。