Phase separator and monomer recycle for supercritical polymerization process
    3.
    发明授权
    Phase separator and monomer recycle for supercritical polymerization process 有权
    用于超临界聚合过程的相分离器和单体循环

    公开(公告)号:US08242237B2

    公开(公告)日:2012-08-14

    申请号:US11854936

    申请日:2007-09-13

    IPC分类号: C08F6/26 C08F10/06

    摘要: A process for polymerizing olefins, comprising the steps of: (a) contacting in a dense-fluid-homogeneous-polymerization system (“PS”), >30 wt % C3+ olefins with: catalyst, activator, 0-50 mol % comonomer, and 0-40 wt % diluent/solvent, at a temperature > PS Tc and a pressure no lower than 1 MPa below the PS cloud point pressure and the polymer or above 80° C., whichever is higher; (f) separating the monomer-rich phase from the polymer-rich phase; (g) recycling the separated monomer-rich phase and recovering polymer from the polymer-rich phase.

    摘要翻译: 一种聚合烯烃的方法,包括以下步骤:(a)在稠密 - 液体均相聚合体系(“PS”)中,> 30wt%的C 3+烯烃与催化剂,活化剂,0-50mol%共聚单体, 和0-40重量%稀释剂/溶剂,温度> PS Tc和低于PS浊点压力和<200MPa的不低于1MPa的压力; (b)形成包含聚合物 - 单体混合物的反应器流出物; (c)任选地加热混合物(b); (d)在分离容器中收集混合物(b); (e)降低压力以形成两相混合物,其中反应器中的压力高于分离容器中的压力为7-100MPa,分离容器中的温度>聚合物或高于80℃, 以较高者为准; (f)从富含聚合物的相分离富单体相; (g)循环分离的富含单体的相并从富含聚合物的相回收聚合物。

    In-line process to produce pellet-stable polyolefins
    5.
    发明授权
    In-line process to produce pellet-stable polyolefins 有权
    生产颗粒稳定的聚烯烃的在线工艺

    公开(公告)号:US07994237B2

    公开(公告)日:2011-08-09

    申请号:US12317062

    申请日:2008-12-18

    IPC分类号: B29C47/10

    摘要: An in-line fluid phase process for blending low crystallinity polymer components (LCPCs) and high crystallinity polymer components (HCPCs) to form pellet-stable polyolefin pellets is provided. The in-line process for producing the blend includes providing two or more parallel reactor trains and one or more separators for product blending and product-feed separation; wherein the two or more reactor trains producting the LCPC and HCPC blend components operate under fluid phase bulk homogeneous conditions, and at least one of the reactor trains operates under supercritical conditions. The HCPC blend component is a high crystallinity polypropylene-based polymer. The LCPC blend component is a low crystallinity ethylene-based or propylene-based polymer. The resultant blend pellets exhibit a reduced tendency or an eliminated tendency to agglomerate during shipping, handling and storage.

    摘要翻译: 提供了用于混合低结晶度聚合物组分(LCPC)和高结晶度聚合物组分(HCPC)以形成颗粒稳定的聚烯烃颗粒的在线流相方法。 用于生产混合物的在线方法包括提供两个或更多个平行的反应器列和用于产物共混和产物进料分离的一个或多个分离器; 其中产生LCPC和HCPC共混物组分的两个或多个反应器列在流体相体积均匀条件下操作,并且反应器列中的至少一个在超临界条件下操作。 HCPC共混组分是高结晶度聚丙烯基聚合物。 LCPC共混组分是低结晶度乙烯基或丙烯类聚合物。 所得到的混合颗粒在运输,处理和储存期间呈现降低的倾向或排除的结块趋势。

    In-line process for producing plasticized polymers and plasticized polymer blends
    6.
    发明授权
    In-line process for producing plasticized polymers and plasticized polymer blends 有权
    用于生产增塑聚合物和增塑聚合物共混物的在线方法

    公开(公告)号:US07928162B2

    公开(公告)日:2011-04-19

    申请号:US12283045

    申请日:2008-09-09

    IPC分类号: C08F2/12 C08F6/00 C08L23/02

    摘要: A process for fluid phase in-line blending of plasticized polymers is provided. The process includes providing two or more reactor trains configured in parallel and a separator for product blending and product-feed separation, wherein one or more of the reactor trains produces one or more polymers and one or more of the reactor trains produces one or more plasticizers; contacting in at least one of the parallel reactor trains olefin monomers, catalyst systems, optional comonomers, optional scavengers, and optional diluents or solvents, at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa; forming a reactor effluent including a homogeneous fluid phase polymer-monomer mixture and plasticizer-monomer mixture in each parallel reactor train; passing the reactor effluents through the separator; maintaining the temperature and pressure within the separator above the solid-fluid phase transition point but below the cloud point pressure and temperature to form a fluid-fluid two-phase system including a plasticized polymer-rich blend phase and a monomer-rich phase; and separating the monomer-rich phase from the plasticized polymer-rich blend phase. The polymer-rich blend phase is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a plasticized polymer product blend. Suitable plasticizers for in-line production and blending include polyalphaolefin oligomers, polybutenes, low glass transition temperature polymers and combinations thereof.

    摘要翻译: 提供了一种用于增塑聚合物的流体相在线共混的方法。 该方法包括提供并联配置的两个或多个反应器列和用于产物共混和产物 - 进料分离的分离器,其中一个或多个反应器列产生一种或多种聚合物,并且一个或多个反应器列产生一种或多种增塑剂 ; 在高于聚合体系的固体 - 流体相转变温度的温度下,在至少一个平行反应器系列烯烃单体,催化剂体系,任选的共聚单体,任选的清除剂和任选的稀释剂或溶剂中接触,并且压力不低于10 MPa低于聚合体系的浊点压力,小于1500MPa; 在每个平行的反应器列中形成包含均相流体相聚合物 - 单体混合物和增塑剂 - 单体混合物的反应器流出物; 使反应器流出物通过分离器; 将分离器内的温度和压力保持在固体 - 流体相转变点之上但低于浊点压力和温度,以形成包括增塑的富含聚合物的共混相和富单体相的流体 - 流体两相系统; 并将富单体相与增塑的富聚合物相分离。 富含聚合物的共混相被输送到下游整理阶段以用于进一步的单体汽提,干燥和/或造粒以形成增塑的聚合物产物混合物。 用于在线生产和共混的合适的增塑剂包括聚α-烯烃低聚物,聚丁烯,低玻璃化转变温度聚合物及其组合。

    Fouling prevention in polymerization reactors
    7.
    发明授权
    Fouling prevention in polymerization reactors 有权
    聚合反应堆防污

    公开(公告)号:US07745552B2

    公开(公告)日:2010-06-29

    申请号:US12157972

    申请日:2008-06-13

    IPC分类号: C08F2/00 B01J19/18

    摘要: Reactor designs and processes for operating such reactor designs to minimize or eliminate fouling in homogeneous polymerization processes (solution and supercritical). The process includes providing a reactor with one or more feed entry ports, wherein the reactor feed components are fed through each of the one or more feed entry ports at a linear velocity of greater than or equal to 0.3 m/min. The one or more feed entry ports may also be optionally extended beyond the interior reactor wall by greater than or equal to 2% of the internal radius of the reactor to further decrease the propensity for fouling. A stirred reactor may also include a stirrer feed port for purging the stirrer with a stirrer purge stream at a linear velocity of greater than or equal to 0.3 m/min to decrease stirrer fouling.

    摘要翻译: 用于操作这种反应器设计的反应器设计和方法以在均匀聚合过程(溶液和超临界)中最小化或消除结垢。 该方法包括向反应器提供一个或多个进料口,其中反应器进料组分以大于或等于0.3m / min的线速度通过一个或多个进料口中的每一个进料。 一个或多个进料口也可以任选地延伸超过内部反应器壁大于或等于反应器内半径的2%,以进一步降低结垢倾向。 搅拌反应器还可以包括用于以大于或等于0.3m / min的线速度用搅拌器吹扫流吹扫搅拌器的搅拌器进料口,以减少搅拌器结垢。

    Scalable and dynamic quality of service control
    8.
    发明授权
    Scalable and dynamic quality of service control 有权
    可扩展和动态的服务质量控制

    公开(公告)号:US07698457B2

    公开(公告)日:2010-04-13

    申请号:US10706796

    申请日:2003-11-12

    IPC分类号: G06F15/173

    摘要: Applications and users dynamically make QoS provisioning requests for individual traffic flows traversing client and server hosts. A traffic flow provisioning request is conveyed to a services manager, which determines a set of traffic attributes for the flow and determines the networks the flow traverses between the client and server hosts. The services manger then oversees the admission of the flow to appropriate traffic classes in each determined network and the obtaining of a DSCP value for each network. Lastly, the services manger conveys the DSCP value of the first network traversed back to the client or server host, depending on the direction of the flow, which host is then configured to appropriately mark the DSCP field of the traffic flow packets. In a further embodiment, the services manager also instructs the client or server host to perform packet policing and shaping for the flow.

    摘要翻译: 应用程序和用户动态地为穿过客户端和服务器主机的各个流量动态地提供QoS配置请求。 业务流量配置请求被传送到服务管理器,服务管理器确定流的一组业务属性,并确定流在客户端和服务器主机之间的网络。 然后,服务管理员将流量接纳到每个确定的网络中的适当流量类别并获得每个网络的DSCP值。 最后,服务管理器将第一个网络的DSCP值传送回客户端或服务器主机,具体取决于流的方向,然后将哪个主机配置为适当地标记业务流分组的DSCP字段。 在另一实施例中,服务管理器还指示客户端或服务器主机对流进行分组管理和整形。

    Bulk homogeneous polymerization process for ethylene propylene copolymers
    9.
    发明申请
    Bulk homogeneous polymerization process for ethylene propylene copolymers 有权
    乙烯丙烯共聚物的均匀聚合方法

    公开(公告)号:US20090163678A1

    公开(公告)日:2009-06-25

    申请号:US12291898

    申请日:2008-11-14

    IPC分类号: C08F2/01 C08F4/06 C08F210/02

    摘要: Provided are bulk homogeneous polymerization processes for producing ethylene propylene random copolymers. The process includes contacting in a reactor or in a series of reactors propylene monomer, ethylene comonomer with one or more catalyst systems and optional solvent (present at less than 40 wt %), wherein the reactor train is at a temperature of between 65° C. and 180° C. and at a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa, and wherein the polymerization system for the reactor train is in its dense fluid state to form a polymer reactor effluent including a homogeneous fluid phase polymer-monomer mixture in the reactor train; and wherein the resultant copolymer product comprises between 10 wt % and 20 wt % randomly distributed ethylene and the concentration of total region defects in the continuous propylene segments of the random EP copolymer is between 40 and 150% greater than in a copolymer of equivalent melt flow rate and wt % ethylene polymerized by a solution polymerization process.

    摘要翻译: 提供用于生产乙烯丙烯无规共聚物的本体均相聚合方法。 该方法包括使反应器或一系列反应器中的丙烯单体,乙烯共聚单体与一种或多种催化剂体系和任选的溶剂(以小于40wt%存在)接触,其中反应器系在65℃ 并且在低于聚合体系的浊点压力不低于10MPa的压力下低于1500MPa,并且其中反应器系列的聚合系统处于其致密的流体状态以形成聚合物反应器 流出物包括在反应器系列中的均相流体相聚合物 - 单体混合物; 并且其中所得共聚物产物包含10重量%至20重量%的随机分布的乙烯,并且随机EP共聚物的连续丙烯链段中总区域缺陷的浓度比当量熔体流动的共聚物中的区域间缺陷的浓度高40至150% 速率和wt%乙烯通过溶液聚合方法聚合。

    FET-BASED SENSOR FOR DETECTING REDUCING GASES OR ALCOHOL, AND ASSOCIATED PRODUCTION AND OPERATIONG METHOD
    10.
    发明申请
    FET-BASED SENSOR FOR DETECTING REDUCING GASES OR ALCOHOL, AND ASSOCIATED PRODUCTION AND OPERATIONG METHOD 审中-公开
    用于检测降低气体或酒精的基于FET的传感器,以及相关的生产和操作方法

    公开(公告)号:US20090127100A1

    公开(公告)日:2009-05-21

    申请号:US12330955

    申请日:2008-12-09

    IPC分类号: C23C14/16

    CPC分类号: G08B17/117 G01N27/4141

    摘要: An FET-based gas sensor includes at least one field-effect transistor and at least one gas-sensitive layer and a reference layer. Any changes in work function occurring when materials of the layers are exposed to a gas are used to trigger the field-effect structures. The gas-sensitive layer includes a metal oxide having an oxidation catalyst on its surface and accessible to the measured gas.

    摘要翻译: 基于FET的气体传感器包括至少一个场效应晶体管和至少一个气体敏感层和参考层。 用于暴露于气体的层的材料发生的作用函数的任何变化被用于触发场效应结构。 气敏层包括其表面上具有氧化催化剂的金属氧化物,并且可被测量的气体接近。