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1.发明授权Preparation of multimodal, high density, ethylene homopolymer barrier resins and films 有权制备多峰，高密度，乙烯均聚物阻隔树脂和薄膜公开(公告)号：US07951883B1
公开(公告)日：2011-05-31
申请号：US12592900
申请日：2009-12-04
IPC分类号： C08F4/44
CPC分类号： C08J5/18 , B32B27/08 , B32B27/32 , C08F110/02 , C08J2323/06 , C08F4/6465 , C08F2500/05 , C08F2500/07 , C08F2500/12 , C08F2500/26
摘要： Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties.
摘要翻译： 公开了一种多峰，高密度均聚乙烯阻挡树脂。 树脂优选通过多级方法制成。 该方法包括在齐格勒 - 纳塔催化剂，有机铝助催化剂，烷氧基硅烷改性剂和氢气存在下乙烯均聚的第一阶段。 来自第一阶段的反应混合物脱挥发分以除去所有或基本上全部的氢。 聚合在第二阶段继续，其中将乙烯加入到脱挥发分的反应混合物中以产生阻挡树脂。 阻隔树脂提供具有改进的阻挡性能的膜。
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公开(公告)号：US20090304966A1
公开(公告)日：2009-12-10
申请号：US12156844
申请日：2008-06-05
申请人： Sameer D. Mehta , Mark K. Reinking , Sebastian Joseph , Philip J. Garrison , Everett O. Lewis , Thomas J. Schwab , Wallace W. Yau
发明人： Sameer D. Mehta , Mark K. Reinking , Sebastian Joseph , Philip J. Garrison , Everett O. Lewis , Thomas J. Schwab , Wallace W. Yau
CPC分类号： C08F210/16 , C08F110/02 , Y10T428/139 , C08F2/001 , C08F2500/02 , C08F2500/07 , C08F2500/05 , C08F2500/12 , C08F2500/09 , C08F210/08 , C08F2500/01 , C08F2500/08 , C08F210/14
摘要： Bimodal polyethylene resins having reduced long-chain branching and suitable for use in pipe resin applications as a result of their improved SCG and RCP resistance are provided. The improved resins of the invention are produced in a two-reactor cascade slurry polymerization process using a Ziegler-Natta catalyst system and wherein an alkoxysilane modifier is present in both reactors.
摘要翻译： 提供了由于其改进的SCG和RCP电阻而具有减少的长链支化并适合用于管道树脂应用的双峰聚乙烯树脂。 本发明的改进的树脂在使用齐格勒 - 纳塔催化剂体系的双反应器级联淤浆聚合方法中制备，并且其中烷氧基硅烷改性剂存在于两个反应器中。
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3.发明授权Polyethylene having faster crystallization rate and improved environmental stress cracking resistance 有权聚乙烯具有更快的结晶速率和改善的耐环境应力开裂性公开(公告)号：US09187627B2
公开(公告)日：2015-11-17
申请号：US12288826
申请日：2008-10-23
申请人： Sameer D. Mehta
发明人： Sameer D. Mehta
CPC分类号： C08L23/0815 , C08L23/06 , C08L2205/03 , C08L2205/24 , C08L2666/02
摘要： Disclosed is a polyethylene composition having faster crystallization rate and improved environmental stress cracking resistance. The polyethylene composition comprises a multimodal polyethylene and a nucleating agent. The multimodal polyethylene comprises from 25 to 50 wt % of a low molecular weight ethylene homopolymer component, from 25 to 50 wt % of a medium molecular weight ethylene copolymer component and from 25 to 50 wt % of a high molecular weight ethylene copolymer component. The polyethylene composition has an environmental stress cracking resistance (ASTM D1693, Condition B in 100% Igepal) greater than or equal to 40 days and a crystallization half time less than or equal to 70% of the crystallization half time of the multimodal polyethylene without nucleating agent.
摘要翻译： 公开了具有更快的结晶速率和改进的耐环境应力开裂性的聚乙烯组合物。 聚乙烯组合物包含多峰聚乙烯和成核剂。 多峰聚乙烯包含25至50重量％的低分子量乙烯均聚物组分，25至50重量％的中分子量乙烯共聚物组分和25至50重量％的高分子量乙烯共聚物组分。 聚乙烯组合物具有大于或等于40天的环境应力开裂性（ASTM D1693，条件B在100％Igepal中），并且结晶半衰期小于或等于多晶聚乙烯的无结晶半时间的70％ 代理商
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公开(公告)号：US08546504B2
公开(公告)日：2013-10-01
申请号：US13024113
申请日：2011-02-09
申请人： Chun Lee , Dinshong Dong , Charles S. Holland , James R. Beren , Anthony J. De Nicola, Jr. , Sameer D. Mehta , Vu A. Dang , Richard J. Fezza
发明人： Chun Lee , Dinshong Dong , Charles S. Holland , James R. Beren , Anthony J. De Nicola, Jr. , Sameer D. Mehta , Vu A. Dang , Richard J. Fezza
CPC分类号： C08L23/10 , C08K5/005 , C08K5/098 , C08K5/34926 , C08L2205/02 , C08L2207/02
摘要： The present invention relates to a process comprising extruding a blend of an first propylene polymer comprising a non-phenolic stabilizer and a non-irradiated second propylene polymer, wherein the irradiation of the first propylene polymer was conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer were blended at a temperature below the melting point of the first and second propylene polymers.
摘要翻译： 本发明涉及包括挤出包含非酚类稳定剂的第一丙烯聚合物和未经辐照的第二丙烯聚合物的共混物的方法，其中第一丙烯聚合物的照射在还原氧环境中进行， 第一丙烯聚合物和未经照射的第二丙烯聚合物在低于第一和第二丙烯聚合物的熔点的温度下共混。
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公开(公告)号：US20120123067A1
公开(公告)日：2012-05-17
申请号：US13358799
申请日：2012-01-26
申请人： Sameer D. MEHTA , Mark K. Reinking , Sebastian Joseph , Philip J. Garrison , Everett O. Lewis , Thomas J. Schwab , Wallace W. Yau
发明人： Sameer D. MEHTA , Mark K. Reinking , Sebastian Joseph , Philip J. Garrison , Everett O. Lewis , Thomas J. Schwab , Wallace W. Yau
IPC分类号： C08F4/58
CPC分类号： C08F210/16 , C08F110/02 , Y10T428/139 , C08F2/001 , C08F2500/02 , C08F2500/07 , C08F2500/05 , C08F2500/12 , C08F2500/09 , C08F210/08 , C08F2500/01 , C08F2500/08 , C08F210/14
摘要： Bimodal polyethylene resins having reduced long-chain branching and suitable for use in pipe resin applications as a result of their improved SCG and RCP resistance are provided. The improved resins of the invention are produced in a two-reactor cascade slurry polymerization process using a Ziegler-Natta catalyst system and wherein an alkoxysilane modifier is present in both reactors.
摘要翻译： 提供了由于其改进的SCG和RCP电阻而具有减少的长链支化并适合用于管道树脂应用的双峰聚乙烯树脂。 本发明的改进的树脂在使用齐格勒 - 纳塔催化剂体系的双反应器级联淤浆聚合方法中制备，并且其中烷氧基硅烷改性剂存在于两个反应器中。
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公开(公告)号：US07375162B2
公开(公告)日：2008-05-20
申请号：US11290060
申请日：2005-11-30
CPC分类号： C08L23/10 , C08F8/00 , C08K3/34 , C08L23/0815 , C08L23/12 , C08L23/16 , C08L51/06 , C08L2666/02 , C08L83/00
摘要： Filled propylene polymer compositions having significantly improved melt strength are provided. The compositions are blends of propylene polymer, mineral filler with an ethylene polymer component consisting of an ethylene plastomer and a silane-containing ethylene polymer.
摘要翻译： 提供了具有显着改善的熔体强度的填充丙烯聚合物组合物。 组合物是丙烯聚合物，矿物填料与由乙烯塑性体和含硅烷的乙烯聚合物组成的乙烯聚合物组分的共混物。
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公开(公告)号：US07230054B2
公开(公告)日：2007-06-12
申请号：US10880263
申请日：2004-06-29
IPC分类号： C08L23/00
CPC分类号： C08F210/16 , C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2205/025 , C08L2666/06 , C08F210/08 , C08F2500/12 , C08F2500/03 , C08F2500/13
摘要： Resins comprising a relatively high-density, low-molecular-weight polyethylene component and a relatively low-density, high-molecular-weight ethylene copolymer component and methods of making the resins are disclosed. The rheological polydispersity of the high-density component exceeds that of either the resin or the low-density component. The resins are valuable for making films, sheets, coatings, pipes, fibers, and molded articles having a favorable balance of good stiffness and excellent environmental stress crack resistance.
摘要翻译： 公开了包含相对高密度，低分子量聚乙烯组分和相对低密度，高分子量乙烯共聚物组分的树脂和制备树脂的方法。 高密度组分的流变多分散性超过树脂或低密度组分的多分散性。 这些树脂对于制造具有良好的刚度和优异的耐环境应力开裂性的良好平衡的膜，片，涂料，管，纤维和模制品是有价值的。
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8.发明授权Process for producing olefin polymer composites having improved melt strength 失效具有改进的熔体强度的生产烯烃聚合物复合材料的方法公开(公告)号：US06656995B2
公开(公告)日：2003-12-02
申请号：US10096640
申请日：2002-03-12
IPC分类号： C08L334
CPC分类号： C08K9/04 , C08J3/215 , C08J2323/02 , C08K3/346 , C08K9/08 , C08K2201/011 , C08L23/02 , C08L23/0815 , C08L23/10
摘要： A process for producing olefin polymer composites having improved melt strength and other improved physical characteristics is provided. The process is a solution process wherein an organically modified clay is intimately incorporated, at low levels and without the use of compatibilizing agents, into an olefin polymer base resin.
摘要翻译： 提供了具有改进的熔体强度和其它改进的物理特性的生产烯烃聚合物复合材料的方法。 该方法是一种溶液方法，其中有机改性的粘土以低水平和不使用相容剂紧密掺入烯烃聚合物基础树脂中。
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公开(公告)号：US06649698B1
公开(公告)日：2003-11-18
申请号：US10147843
申请日：2002-05-17
申请人： Sameer D. Mehta
发明人： Sameer D. Mehta
IPC分类号： C08L2300
CPC分类号： C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2666/04
摘要： A blend comprising a high molecular weight, high density polyethylene (HMW HDPE) and a linear low density polyethylene (LLDPE) is disclosed. The blend comprises from about 50 wt. % to about 80 wt. % of HMW HDPE. The HMW HDPE has a density greater than about 0.94 g/cc and a melt index MI2 less than about 0.1 dg/min. The blend also comprises about 20 wt. % to about 50. wt % of LLDPE. The LLDPE has a density within the range of about 0.90 to about 0.93 g/cc and an MI2 within the range of about 0.5 to about 5 dg/min. The LLDPE is a copolymer of ethylene with 1-hexene that has a dart drop impact strength of greater than about 500 grams as measured by ASTM D1709/A. The blend shows increased resistance to environmental stress cracking.
摘要翻译： 公开了包含高分子量，高密度聚乙烯（HMW HDPE）和线性低密度聚乙烯（LLDPE）的共混物。 共混物包含约50wt。 ％至约80wt。 ％HMW HDPE。 HMW HDPE的密度大于约0.94g / cc，熔体指数MI2小于约0.1dg / min。 共混物还包含约20wt。 ％至约50.wt％的LLDPE。 LLDPE的密度在约0.90至约0.93g / cc的范围内，MI2在约0.5至约5dg / min的范围内。 LLDPE是乙烯与1-己烯的共聚物，其具有通过ASTM D1709 / A测量的大于约500克的落镖冲击强度。 混合物显示增加的耐环境应力开裂性。
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10.发明申请PREPARATION OF MULTIMODAL, HIGH DENSITY, ETHYLENE HOMOPOLYMER BARRIER RESINS AND FILMS 有权多模，高密度，乙烯共聚物阻挡树脂和膜的制备公开(公告)号：US20110136997A1
公开(公告)日：2011-06-09
申请号：US12592900
申请日：2009-12-04
IPC分类号： C08F110/02
CPC分类号： C08J5/18 , B32B27/08 , B32B27/32 , C08F110/02 , C08J2323/06 , C08F4/6465 , C08F2500/05 , C08F2500/07 , C08F2500/12 , C08F2500/26
摘要： Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties.
摘要翻译： 公开了一种多峰，高密度均聚乙烯阻挡树脂。 树脂优选通过多级方法制成。 该方法包括在齐格勒 - 纳塔催化剂，有机铝助催化剂，烷氧基硅烷改性剂和氢气存在下乙烯均聚的第一阶段。 来自第一阶段的反应混合物脱挥发分以除去所有或基本上全部的氢。 聚合在第二阶段继续，其中将乙烯加入到脱挥发分的反应混合物中以产生阻挡树脂。 阻隔树脂提供具有改进的阻挡性能的膜。
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