COMPONENT SEPARATIONS IN POLYMERIZATION
    1.
    发明申请
    COMPONENT SEPARATIONS IN POLYMERIZATION 审中-公开
    聚合中的组分分离

    公开(公告)号:WO2013154907A3

    公开(公告)日:2014-01-03

    申请号:PCT/US2013035274

    申请日:2013-04-04

    Abstract: A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.

    Abstract translation: 一种聚合物生产系统中组分分离的方法,包括将聚合产物流分离成气流和聚合物流,其中气流包括乙烷和未反应的乙烯,将气流蒸馏成轻质烃流,其中轻烃 流包含乙烷和未反应的乙烯,使轻质烃流与吸收溶剂体系接触,其中至少一部分来自轻烃流的未反应乙烯被吸收溶剂体系吸收,并从吸收溶剂中回收废气流 系统,其中废气流包括乙烷,氢气或其组合。

    MONOVINYLARENE/CONJUGATED DIENE COPOLYMERS
    2.
    发明申请
    MONOVINYLARENE/CONJUGATED DIENE COPOLYMERS 审中-公开
    单乙烯/共聚二烯共聚物

    公开(公告)号:WO2005047355A3

    公开(公告)日:2005-09-09

    申请号:PCT/US2004037279

    申请日:2004-11-05

    CPC classification number: C08L53/02 C08F297/04 C08F297/046 C08L53/00

    Abstract: We disclose a monovinylarene/conjugated diene block copolymer, comprising: (i) a random (conjugated dieneX/monovinylareney)m block, wherein x is about 2.5 wt% to about 10 wt%, y is from about 90 wt% to about 97.5 wt%, and x + y is about 97.5 wt% to 100 wt%; and (ii) a (conjugated dime)n block; wherein n is from about 20 wt% to about 30 wt%, m is from about 70 wt% to about 80 wt%, and m + n is from about 90 wt% to 100 wt%. We also disclose a method of forming the block copolymer and a method for fabricating an article from the block copolymer. The block copolymer typically exhibits a Tg at least about 10°C less than the Tg of a reference polymer differing only in that x is about 0 wt% and y is about 100 wt%.

    Abstract translation: 我们公开了单乙烯基芳烃/共轭二烯嵌段共聚物,其包含:(i)无规(共轭二烯X /单乙烯基芳烃)m嵌段,其中x为约2.5重量%至约10重量%,y为约90重量%至约97.5重量% %,x + y为约97.5wt%至100wt%; 和(ii)(共轭角质)n嵌段; 其中n为约20重量%至约30重量%,m为约70重量%至约80重量%,m + n为约90重量%至100重量%。 我们还公开了形成嵌段共聚物的方法和由嵌段共聚物制造制品的方法。 嵌段共聚物通常表现出比参考聚合物的Tg低至少约10℃的Tg,其仅在x为约0重量%且y为约100重量%时不同。

    ETHYLENE RECOVERY BY ABSORPTION
    3.
    发明申请
    ETHYLENE RECOVERY BY ABSORPTION 审中-公开
    乙烯通过吸收回收

    公开(公告)号:WO2013154882A1

    公开(公告)日:2013-10-17

    申请号:PCT/US2013/035103

    申请日:2013-04-03

    Abstract: A process for recovery of ethylene from a polymerization product stream of a polyethylene production system, comprising separating a light gas stream from the polymerization product stream, wherein the light gas stream comprises ethane and unreacted ethylene, contacting the light gas stream with an absorption solvent system, wherein the contacting the light gas stream with the absorption solvent system occurs at a temperature in a range of from about 40° F to about 110° F, wherein at least a portion of the unreacted ethylene from the light gas stream is absorbed by the absorption solvent system, and recovering unreacted ethylene from the absorption solvent system to yield recovered ethylene.

    Abstract translation: 一种从聚乙烯生产系统的聚合产物流中回收乙烯的方法,包括从聚合产物流中分离轻质气体流,其中轻质气体流包含乙烷和未反应的乙烯,使轻质气体物流与吸收溶剂体系接触 其中轻质气体流与吸收溶剂体系的接触在约40°F至约110°F的温度范围内发生,其中至少一部分来自轻质气体流的未反应的乙烯被 吸收溶剂体系,并从吸收溶剂系统回收未反应的乙烯以产生回收的乙烯。

    CONTINUOUS TAKE OFF TECHNIQUE AND PRESSURE CONTROL OF POLYMERIZATION REACTORS
    4.
    发明申请
    CONTINUOUS TAKE OFF TECHNIQUE AND PRESSURE CONTROL OF POLYMERIZATION REACTORS 审中-公开
    连续采用聚合反应器的技术和压力控制

    公开(公告)号:WO2011146334A1

    公开(公告)日:2011-11-24

    申请号:PCT/US2011/036434

    申请日:2011-05-13

    Abstract: Techniques and systems for producing a polyolefin using reactors in series are described. Described embodiments include techniques and systems for polymerizing a monomer in a first polymerization reactor to form a first polyolefin, discharging a first slurry continuously from the first polymerization reactor to a second polymerization reactor, and discharging a second slurry continuously from the second polymerization reactor. Using continuous take-off devices disposed on either or both reactors, pressure control may be attained such that the rate of transfer between and withdrawal from both reactors are within a desired range.

    Abstract translation: 描述了使用串联反应器生产聚烯烃的技术和系统。 描述的实施方案包括用于在第一聚合反应器中聚合单体以形成第一聚烯烃的技术和系统,将第一浆料从第一聚合反应器连续排出到第二聚合反应器,并从第二聚合反应器连续排出第二浆料。 使用设置在任一个或两个反应器上的连续取出装置,可以实现压力控制,使得两个反应器之间的转移速率和从两个反应器中回收的速率在期望的范围内。

    COMPRESSIBLE LIQUID DILUENT IN POLYOLEFIN POLYMERIZATION
    5.
    发明申请
    COMPRESSIBLE LIQUID DILUENT IN POLYOLEFIN POLYMERIZATION 审中-公开
    聚烯烃聚合中的可压缩液体稀释

    公开(公告)号:WO2011097119A1

    公开(公告)日:2011-08-11

    申请号:PCT/US2011/022812

    申请日:2011-01-28

    Abstract: Embodiments of the present application provide a method for manufacturing a polyolefin and a system for implementing the method. The method comprises combining a catalyst with a diluent mixture containing a diluent and an olefin monomer in a polymerization reactor. The diluent may comprise propane, butane, or isobutane, or a combination thereof. The polymerization reactor is operated at a pressure above a critical pressure of the diluent, but below the critical temperature of the diluent.

    Abstract translation: 本发明的实施方案提供了制造聚烯烃的方法和用于实施该方法的系统。 该方法包括在聚合反应器中将催化剂与含有稀释剂和烯烃单体的稀释剂混合物组合。 稀释剂可以包括丙烷,丁烷或异丁烷,或其组合。 聚合反应器在高于稀释剂的临界压力但低于稀释剂的临界温度的压力下操作。

    PRESSURE MANAGEMENT FOR SLURRY POLYMERIZATION
    9.
    发明申请
    PRESSURE MANAGEMENT FOR SLURRY POLYMERIZATION 审中-公开
    浆料聚合的压力管理

    公开(公告)号:WO2014070608A1

    公开(公告)日:2014-05-08

    申请号:PCT/US2013/066842

    申请日:2013-10-25

    Abstract: Processes and systems for the production for pressure management of a polymerization product flowing from a loop polymerization reactor to a separation vessel in a slurry polymerization system are disclosed herein. For example, a process comprises withdrawing the polymerization product from a loop polymerization reactor, and conveying the withdrawn polymerization product to a separation vessel via a first pressure differential and a second pressure differential. The withdrawn polymerization product may flow through the first pressure differential before flowing through the second pressure differential, and the first pressure differential may be less than the second pressure differential.

    Abstract translation: 在本文中公开了用于从淤浆聚合系统中的环状聚合反应器流到分离容器的聚合产物的压力管理生产的方法和系统。 例如,一种方法包括从环路聚合反应器中取出聚合产物,并通过第一压力差和第二压差将抽出的聚合产物输送到分离容器。 撤回的聚合产物可能在流过第二压力差之前流过第一压力差,并且第一压力差可小于第二压力差。

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