Polymerization Process to Make Low Density Polyethylene
    1.
    发明申请
    Polymerization Process to Make Low Density Polyethylene 有权
    制备低密度聚乙烯的聚合方法

    公开(公告)号:US20130197168A1

    公开(公告)日:2013-08-01

    申请号:US13876292

    申请日:2011-09-21

    IPC分类号: C08F10/02

    摘要: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1.

    摘要翻译: 形成乙烯基聚合物的高压聚合方法包括以下步骤:A.将包含链转移剂体系(CTA体系)和乙烯的第一种进料注入到在聚合条件下操作的第一高压釜反应器区域中以产生第一区 反应产物,具有转移活性Z1的第一反应器区域的CTA体系; (1)将至少部分第一区反应产物转移到选自第二高压釜反应器区或管式反应器区并在聚合条件下操作的第二反应器区,以及任选地(2)新鲜地注入, 第二进料到第二反应器区以产生第二区反应产物,条件是第一反应器区产物和新注入的进料中的至少一个包含具有Z 2的转移活性的CTA体系; 并且条件是Z1:Z2的比率大于1。

    Polymerization process to make low density polyethylene
    3.
    发明授权
    Polymerization process to make low density polyethylene 有权
    聚合过程制备低密度聚乙烯

    公开(公告)号:US09234055B2

    公开(公告)日:2016-01-12

    申请号:US13876292

    申请日:2011-09-21

    摘要: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1.

    摘要翻译: 形成乙烯基聚合物的高压聚合方法包括以下步骤:A.将包含链转移剂体系(CTA体系)和乙烯的第一种进料注入到在聚合条件下操作的第一高压釜反应器区域中以产生第一区 反应产物,具有转移活性Z1的第一反应器区域的CTA体系; (1)将至少部分第一区反应产物转移到选自第二高压釜反应器区或管式反应器区并在聚合条件下操作的第二反应器区,以及任选地(2)新鲜地注入, 第二进料到第二反应器区以产生第二区反应产物,条件是第一反应器区产物和新注入的进料中的至少一个包含具有Z 2的转移活性的CTA体系; 并且条件是Z1:Z2的比率大于1。

    Polymerization Process to Make Low Density Polyethylene
    4.
    发明申请
    Polymerization Process to Make Low Density Polyethylene 有权
    制备低密度聚乙烯的聚合方法

    公开(公告)号:US20120252990A1

    公开(公告)日:2012-10-04

    申请号:US13515028

    申请日:2010-12-14

    IPC分类号: C08F10/02 C08F2/01

    摘要: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that the second reactor zone contains a CTA system having a transfer activity Z2; and with the proviso that the ratio of Z1/Z2 is less than 1.

    摘要翻译: 形成乙烯基聚合物的高压聚合方法包括以下步骤:A.将包含乙烯和任选的链转移剂体系(CTA体系)的第一种进料注入到在聚合条件下操作的第一高压釜反应器区中,以产生第一 区域反应产物,具有转移活性Z1的第一反应器区域的CTA体系; (1)将至少部分第一区反应产物转移到选自第二高压釜反应器区或管状反应器区并在聚合条件下操作的第二反应器区,以及任选地,(2)新鲜地注入第二个 进料到第二反应器区以产生第二区反应产物,条件是第二反应器区含有具有转移活性Z 2的CTA体系; 并且条件是Z1 / Z2的比率小于1。

    LDPE TUBULAR REACTOR PEROXIDE MIXER
    5.
    发明申请
    LDPE TUBULAR REACTOR PEROXIDE MIXER 审中-公开
    低密度聚乙烯管状反应器过氧化物混合器

    公开(公告)号:US20110278379A1

    公开(公告)日:2011-11-17

    申请号:US13143571

    申请日:2010-02-04

    IPC分类号: A62C31/02

    摘要: An initiator injection nozzle for mixing an initiator with a process fluid, comprising: a body comprising an inlet port to receive the process fluid, an outlet port, and an injector inlet to receive initiator; a process fluid flow passage through which the process fluid traverses between the inlet port and outlet port along a central process flow axis, further comprising a constricting portion, a throat, and an expanding portion in that order, —an initiator fluid flow passage through which the initiator traverses between the injector inlet and injector outlet along an injector central vertical axis, where the initiator fluid flow passage intersects the process fluid flow passage in the constricting portion; a stylus at least partially containing the initiator fluid flow passage and further comprising a shaped injector tip forming the injector outlet of the initiator fluid flow passage; where the injector outlet is located in the constricting portion of the process fluid flow passage and upstream of the throat by a horizontal offset as determined along the central process flow axis; and where the injector outlet is located off the central process flow axis by a vertical offset as determined along the injector central vertical axis

    摘要翻译: 一种用于将引发剂与过程流体混合的引发剂喷嘴,包括:主体,其包括用于接收过程流体的入口端口,出口端口和用于接收引发器的注射器入口; 工艺流体流动通道,工艺流体沿着中心工艺流动轴线在入口端口和出口端口之间穿过该过程流体流道,还包括收缩部分,喉部和膨胀部分,该顺序为:起始物流体流动通道, 引发器沿注射器中心垂直轴在注射器入口和注射器出口之间穿过,其中引发剂流体流动通道与收缩部分中的过程流体流动通道相交; 至少部分地包含所述引发剂流体流动通道的触针,并且还包括形成所述引发剂流体流动通道的喷射器出口的成形喷射器尖端; 其中喷射器出口位于过程流体流动通道的收缩部分中并且沿着中心过程流动轴线确定的水平偏移位于喉部的上游; 并且其中喷射器出口沿着喷射器中心垂直轴线确定的垂直偏移位于中心过程流动轴线之外

    FREE RADICAL INITIATOR SYSTEM AND A HIGH PRESSURE, FREERADICAL POLYMERIZATION PROCESS FOR PRODUCING A LOW DENSITY POLYETHYLENE POLYMER
    6.
    发明申请
    FREE RADICAL INITIATOR SYSTEM AND A HIGH PRESSURE, FREERADICAL POLYMERIZATION PROCESS FOR PRODUCING A LOW DENSITY POLYETHYLENE POLYMER 审中-公开
    自由射线发射器系统和用于生产低密度聚乙烯聚合物的高压,自由基聚合方法

    公开(公告)号:US20100093961A1

    公开(公告)日:2010-04-15

    申请号:US12529787

    申请日:2008-02-12

    IPC分类号: C08F4/28 C08F110/02

    摘要: The instant invention is a free radical initiator system, and a high pressure, free radical polymerization process for producing a low density polyethylene polymer. The free radical initiator system according to instant invention includes at least one peroxide initiator, at least one hydrocarbon solvent, and at least one polar co-solvent. The high pressure, free radical polymerization process for producing a low density polyethylene polymer includes the steps of polymerizing ethylene and optionally at least one comonomer under high pressure conditions using a free radical initiator system comprising at least one peroxide initiator, at least one hydrocarbon solvent, and at least polar co-solvent.

    摘要翻译: 本发明是用于生产低密度聚乙烯聚合物的自由基引发剂体系和高压自由基聚合方法。 根据本发明的自由基引发剂体系包括至少一种过氧化物引发剂,至少一种烃溶剂和至少一种极性助溶剂。 用于生产低密度聚乙烯聚合物的高压自由基聚合方法包括在高压条件下使用包含至少一种过氧化物引发剂,至少一种烃溶剂的自由基引发剂体系聚合乙烯和任选的至少一种共聚单体的步骤, 和至少极性助溶剂。

    Polymerization process to make low density polyethylene
    9.
    发明授权
    Polymerization process to make low density polyethylene 有权
    聚合过程制备低密度聚乙烯

    公开(公告)号:US08729186B2

    公开(公告)日:2014-05-20

    申请号:US13515028

    申请日:2010-12-14

    IPC分类号: C08J3/00 C08L23/00

    摘要: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that the second reactor zone contains a CTA system having a transfer activity Z2; and with the proviso that the ratio of Z1/Z2 is less than 1.

    摘要翻译: 形成乙烯基聚合物的高压聚合方法包括以下步骤:A.将包含乙烯和任选的链转移剂体系(CTA体系)的第一种进料注入到在聚合条件下操作的第一高压釜反应器区中,以产生第一 区域反应产物,具有转移活性Z1的第一反应器区域的CTA体系; (1)将至少部分第一区反应产物转移到选自第二高压釜反应器区或管状反应器区并在聚合条件下操作的第二反应器区,以及任选地,(2)新鲜地注入第二个 进料到第二反应器区以产生第二区反应产物,条件是第二反应器区含有具有转移活性Z 2的CTA体系; 并且条件是Z1 / Z2的比率小于1。