Polymerization Process to Make Low Density Polyethylene
    61.
    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

    Abstract: 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.

    Abstract translation: 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。

    Process for making ethylene interpolymers and interpolymers made thereby; compositions and electrical devices containing such interpolymers
    62.
    发明授权
    Process for making ethylene interpolymers and interpolymers made thereby; compositions and electrical devices containing such interpolymers 有权
    制备乙烯互聚物和互聚物的方法; 组合物和含有这种互聚物的电子装置

    公开(公告)号:US08263722B2

    公开(公告)日:2012-09-11

    申请号:US11086108

    申请日:2005-03-21

    Abstract: The invention relates to a continuous polymerization process for preparing a random ethylene interpolymer with propylene and/or 1-butene which comprises: (A) polymerizing ethylene, and as an α-olefin comonomer propylene and/or 1-butene under continuous random polymerization conditions in the presence of single site catalyst system employing an ionic activator having cyclic ligands shielding a central charge bearing atom, at a temperature of 140° C. to 250° C. at a conversion of ethylene of 80 to 99% and a comonomer conversion of from at least 30% and (B) devolatilizing the polymer to provide an ethylene copolymer having a density of from 0.85 to 0.92 g/cm3, an MI of from 0.01 to 100 g/10 min, preferably from 0.1 to 20, and an I21/I2 of from 30 to 400. The invention also relates to polymers made by such processes containing as α-olefin comonomer propylene and/or 1-butene, having a density of from 0.85 to 0.92 g/cm3, an MI of from 0.01 to 100 g/10 min and an I21/I2 of from 30 to 400 obtained by solution polymerization using a transition metal complex as a catalyst and a non-coordinating anion to provide a level of NCA derived residue, as determined by boron content, less than 0.5 ppm. as determined by ICP, preferably undetectable by ICP. The polymers may be blended with EP rubber elastomers and be used for electrical cable insulation.

    Abstract translation: 本发明涉及一种用丙烯和/或1-丁烯制备无规乙烯互聚物的连续聚合方法,其包括:(A)在连续无规聚合条件下聚合乙烯和作为α-烯烃共聚单体丙烯和/或1-丁烯 在使用具有屏蔽中心带电荷原子的环状配体的离子活化剂的单中心催化剂体系存在下,在140℃至250℃的温度下,乙烯的转化率为80-99%,共聚单体转化率 至少30%,(B)使该聚合物脱挥发分,得到密度为0.85-0.92g / cm3,MI为0.01-100g / 10min,优选为0.1-20的乙烯共聚物,和I21 / I 2为30至400.本发明还涉及通过这样的方法制备的聚合物,其包含密度为0.85至0.92g / cm 3的α-烯烃共聚单体丙烯和/或1-丁烯,MI为0.01至 100g / 10min,I21 / I2为30〜400 通过使用过渡金属络合物作为催化剂的溶液聚合和非配位阴离子获得,以提供由硼含量确定的NCA衍生残基的水平小于0.5ppm。 由ICP测定,优选不能通过ICP检测。 聚合物可与EP橡胶弹性体共混并用于电缆绝缘。

    Fast activating catalyst
    64.
    发明授权
    Fast activating catalyst 有权
    快速活化催化剂

    公开(公告)号:US08183173B2

    公开(公告)日:2012-05-22

    申请号:US11963530

    申请日:2007-12-21

    Abstract: A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value and wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours. A method of preparing a polymer comprising alkaline aging a silica support material, adding chromium to the silica support material prior to the alkaline aging, after the alkaline aging, or both to form a chromium-silica support, rapidly activating the chromium-silica support to produce an activated olefin polymerization catalyst, contacting the activated olefin polymerization catalyst with at least one monomer in a reaction zone under conditions suitable to produce a polymer, and recovering the polymer.

    Abstract translation: 一种制备催化剂的方法,包括在碱性溶液中老化二氧化硅载体以产生碱性老化二氧化硅载体,从碱性老化二氧化硅载体除去至少一部分碱性溶液以产生干燥二氧化硅载体,并活化二氧化硅载体 以产生催化剂组合物,其中碱性老化将二氧化硅载体的表面积降低到小于原始值的约50%,并且其中二氧化硅载体的活化以等于或大于约500lb的批次进行,用于 时间段少于约8小时。 一种制备聚合物的方法,其包括使二氧化硅载体材料碱性老化,在碱性老化之前,碱性老化之后向二氧化硅载体材料中加入铬,或二者形成二氧化硅载体,快速活化铬 - 二氧化硅载体, 产生活化的烯烃聚合催化剂,在适于生产聚合物的条件下,在反应区中使活化的烯烃聚合催化剂与至少一种单体接触,并回收聚合物。

    ETHYLENE-ALPHA-OLEFIN COPOLYMER AND MOLDED ARTICLE
    65.
    发明申请
    ETHYLENE-ALPHA-OLEFIN COPOLYMER AND MOLDED ARTICLE 审中-公开
    乙烯 - 丙烯共聚物和成型品

    公开(公告)号:US20120065351A1

    公开(公告)日:2012-03-15

    申请号:US13322315

    申请日:2010-05-27

    Abstract: An ethylene-α-olefin copolymer comprising monomer units derived from ethylene and monomer units derived from an α-olefin having 3 to 20 carbon atoms, having a density (d) of 850 to 970 kg/m3, having a melt flow rate (MFR) of 0.01 to 100 g/10 min, having a bimodal molecular weight distribution, and having a ratio (Mw/Mn) of the weight average molecular weight (Mw) thereof to the number average molecular weight (Mn) thereof of 31 to 70, wherein the number (NLCB) of branches having 5 or more carbon atoms measured by 13C-NMR is from 0.7 to 1.0 per 1000 carbon atoms. This copolymer is superior in a balance between a melt tension, an extrusion load at extruding, and a mechanical strength.

    Abstract translation: 包含衍生自乙烯的单体单元和衍生自碳原子数3〜20的α-烯烃的单体单元,密度(d)为850〜970kg / m 3的乙烯-α-烯烃共聚物,其熔体流动速率(MFR )为0.01〜100g / 10分钟,具有双峰分子量分布,并且其重均分子量(Mw)与数均分子量(Mn)的比(Mw / Mn)为31〜70 其中,通过13 C-NMR测定的具有5个以上碳原子的分支数(NLCB)为每1000个碳原子0.7〜1.0个。 该共聚物在熔融张力,挤出时的挤出负荷和机械强度之间的平衡方面是优异的。

    Process control for the (co)-polymerisation of olefins
    66.
    发明授权
    Process control for the (co)-polymerisation of olefins 有权
    烯烃(共)聚合的工艺控制

    公开(公告)号:US08114945B2

    公开(公告)日:2012-02-14

    申请号:US10492754

    申请日:2002-10-14

    Abstract: Process for controlling the (co)polymerization of olefins in a continuous polymerization reactor wherein the olefin (co)polymerization is performed in an industrial plant reactor in the presence of a polymerization catalyst characterized in that at least one operating parameter of the plant is controlled by means of a measurement of the chain branching level (CBL) of the produced polymer.

    Abstract translation: 在连续聚合反应器中控制烯烃(共)聚合的方法,其中烯烃(共)聚合在工业工厂反应器中在聚合催化剂存在下进行,其特征在于,工厂的至少一个操作参数由 测定生成的聚合物的链支化水平(CBL)的方法。

    Super-solution homogeneous propylene polymerization
    68.
    发明授权
    Super-solution homogeneous propylene polymerization 有权
    超溶液均相丙烯聚合

    公开(公告)号:US08058371B2

    公开(公告)日:2011-11-15

    申请号:US12098907

    申请日:2008-04-07

    Abstract: Processes for polymerizing propylene. About 40 wt % to about 80 wt % propylene monomer, based on total weight of propylene monomer and diluent, and about 20 wt % to about 60 wt % diluent, based on total weight of propylene monomer and diluent, can be fed into a reactor. The propylene monomer can be polymerized in the presence of a metallocene catalyst and an activator within the reactor at a temperature of about 80° C. or more and a pressure of about 13 MPa or more to produce a polymer product in a homogenous system. About 20 wt % to about 76 wt % (preferably About 28 wt % to about 76 wt %) propylene monomer, based on total weight of the propylene monomer, diluent, and polymer product, can be present at the reactor exit at steady state conditions.

    Abstract translation: 丙烯聚合方法 基于丙烯单体和稀释剂的总重量计,约40重量%至约80重量%的丙烯单体和约20重量%至约60重量%的稀释剂(基于丙烯单体和稀释剂的总重量)可以进料到反应器 。 丙烯单体可在茂金属催化剂和活化剂存在下在约80℃以上的温度和约13MPa或更高的压力下在反应器内聚合,以在均匀体系中生产聚合物产物。 基于丙烯单体,稀释剂和聚合物产物的总重量,约20重量%至约76重量%(优选约28重量%至约76重量%)的丙烯单体可以在稳态条件下在反应器出口处存在 。

    Polymer production at supersolution conditions
    70.
    发明授权
    Polymer production at supersolution conditions 有权
    聚合物在超溶解条件下的生产

    公开(公告)号:US08008412B2

    公开(公告)日:2011-08-30

    申请号:US11954273

    申请日:2007-12-12

    Abstract: This invention relates to a process to polymerize olefins comprising contacting propylene, at a temperature of 65° C. to 150° C. and a pressure of 1.72 to 34.5 MPa, with: 1) a catalyst system comprising one or more activators and one or more nonmetallocene metal-centered, heteroaryl ligand catalyst compounds, where the metal is chosen from the Group 4, 5, 6, the lanthanide series, or the actinide series of the Periodic Table of the Elements, 2) optionally one or more comonomers selected from ethylene and C4 to C12 olefins, 3) diluent or solvent, and 4) optionally scavenger, wherein: a) the olefin monomers and any comonomers are present in the polymerization system at 30 wt % or more, b) the propylene is present in the feed at 80 wt % or more, c) the polymerization occurs at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure greater than 1 MPa below the cloud point pressure of the polymerization system, and d) the polymerization occurs: (1) at a temperature below the critical temperature of the polymerization system, or (preferably and) (2) at a pressure below the critical pressure of the polymerization system.

    Abstract translation: 本发明涉及聚合烯烃的方法,包括使丙烯在65℃至150℃的温度和1.72至34.5MPa的压力下接触,其中:1)包含一种或多种活化剂和一种或多种活化剂的催化剂体系 更多的非金属茂金属中心的杂芳基配位体催化剂化合物,其中金属选自第4,5,6族,镧系元素或元素周期表的锕系列,2)任选的一种或多种共聚单体,其选自 乙烯和C 4至C 12烯烃,3)稀释剂或溶剂,和4)任选的清除剂,其中:a)烯烃单体和任何共聚单体在聚合体系中以30重量%或更多存在,b)丙烯存在于 进料为80重量%以上,c)在高于聚合体系的固体 - 流体相转变温度的温度和低于聚合体系浊点压力1MPa的压力下进行聚合,和d)聚合反应 n发生:(1)在低于聚合体系临界温度的温度下,或(优选和)(2)在低于聚合体系临界压力的压力下。

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