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1.发明申请Preparation of LLDPE having controlled xylene solubles or hexane extractables 审中-公开制备具有受控二甲苯可溶物或己烷可萃取物的LLDPE公开(公告)号：US20120053305A1
公开(公告)日：2012-03-01
申请号：US12806894
申请日：2010-08-24
IPC分类号： C08F10/02
CPC分类号： C08F210/16 , C08J5/18 , C08J2323/06 , C08F210/08 , C08F2500/12 , C08F2500/26 , C08F210/14 , C08F4/6494 , C08F4/6543 , C08F4/651
摘要： Disclosed is a method for making LLDPE grades having different xylene solubles or hexane extractables with the same Ziegler-Natta catalyst by varying the amount of alkylaluminum used for polymerization. The method comprises copolymerizing ethylene with a C3-10 α-olefin in the presence of a Ziegler-Natta catalyst, an alkylaluminum, and an electron donor; determining the dependency of the xylene solubles or hexane extractables on the alkylaluminum/electron donor ratio; and adjusting the alkylaluminum/electron donor ratio to achieve a desired xylene solubles or hexane extractables.
摘要翻译： 公开了通过改变用于聚合的烷基铝的量，通过相同的齐格勒 - 纳塔催化剂制备具有不同的二甲苯可溶物或己烷可萃取物的LLDPE级别的方法。 该方法包括在齐格勒 - 纳塔催化剂，烷基铝和电子给体存在下使乙烯与C3-10α-烯烃共聚合; 确定二甲苯可溶物或己烷可萃取物对烷基铝/电子给体比的依赖性; 并调节烷基铝/电子给体比以获得所需的二甲苯可溶物或己烷可萃取物。
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公开(公告)号：US20120053307A1
公开(公告)日：2012-03-01
申请号：US12806893
申请日：2010-08-24
IPC分类号： C08F4/50 , C08F210/00
CPC分类号： C08F210/16 , C08F210/08 , C08F2500/12 , C08F2500/26 , C08F4/651 , C08F4/6543 , C08F4/6545
摘要： Disclosed is a process for making a linear low density polyethylene (LLDPE) having low gels. The process comprises copolymerizing ethylene with one or more C3-10 α-olefins to produce an LLDPE resin which has a gel defect area less than 25 ppm. The copolymerization is performed in the presence of a Ziegler-Natta catalyst which comprises an MgCl2 support, a Ti(IV) complex, and a cyclic ether as an internal electron donor. The Ziegler-Natta catalyst has an Mg/Ti molar ratio greater than or equal to 7.
摘要翻译： 公开了制备具有低凝胶的线性低密度聚乙烯（LLDPE）的方法。 该方法包括使乙烯与一种或多种C 3-10α-烯烃共聚以制备凝胶缺陷面积小于25ppm的LLDPE树脂。 共聚合在齐格勒 - 纳塔催化剂存在下进行，该催化剂包含MgCl 2载体，Ti（IV）络合物和环醚作为内电子给体。 齐格勒 - 纳塔催化剂的Mg / Ti摩尔比大于或等于7。
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公开(公告)号：US10138310B2
公开(公告)日：2018-11-27
申请号：US12806893
申请日：2010-08-24
申请人： Harilaos Mavridis , Debra L. Beran , Jeffrey R. Golden , Joachim T. M. Pater , Giampiero Morini
发明人： Harilaos Mavridis , Debra L. Beran , Jeffrey R. Golden , Joachim T. M. Pater , Giampiero Morini
IPC分类号： C08F210/16 , C08F4/654 , C08F2/34 , C08F2/38
摘要： Disclosed is a process for making a linear low density polyethylene (LLDPE) having low gels. The process comprises copolymerizing ethylene with one or more C3-10 α-olefins to produce an LLDPE resin which has a gel defect area less than 25 ppm. The copolymerization is performed in the presence of a Ziegler-Natta catalyst which comprises an MgCl2 support, a Ti(IV) complex, and a cyclic ether as an internal electron donor. The Ziegler-Natta catalyst has an Mg/Ti molar ratio greater than or equal to 7.
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公开(公告)号：US20080132640A1
公开(公告)日：2008-06-05
申请号：US11606752
申请日：2006-11-30
IPC分类号： C08F297/08
CPC分类号： C08F10/02 , C08F210/16 , Y10S526/905 , Y10S526/943 , C08F2/001 , C08F2/14 , C08F210/08 , C08F2500/05 , C08F2500/17 , C08F2500/11
摘要： A process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a Ziegler-Natta catalyst system in two slurry reaction zones. Most of the polyethylene (70-95 wt. %) is produced in one of the zones, while a smaller fraction is produced in the other zone. The ratio of the weight average molecular weight of the smaller fraction to that of the larger fraction is greater than 8:1. The resulting polyethylene blend, which should have both high melt strength and high extrudate swell, will be useful for blow-molding applications.
摘要翻译： 公开了一种聚合乙烯的方法。 聚合在齐格勒 - 纳塔催化剂体系存在下在两个浆料反应区中进行。 大部分聚乙烯（70-95重量％）是在其中一个区域中生产的，而另一个区域则产生较小的部分。 较小部分的重均分子量与较大部分的重均分子量之比大于8:1。 所得到的聚乙烯共混物，其应具有高熔体强度和高挤出物膨胀性，可用于吹塑应用。
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公开(公告)号：US20050288443A1
公开(公告)日：2005-12-29
申请号：US10880263
申请日：2004-06-29
申请人： Harilaos Mavridis , Sameer Mehta , Mark Mack , Philip Garrison , Michael Lynch
发明人： Harilaos Mavridis , Sameer Mehta , Mark Mack , Philip Garrison , Michael Lynch
IPC分类号： C08F10/02 , C08F110/02 , C08F210/16 , C08F220/02 , C08L23/04 , C08L23/06 , C08L23/08 , 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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公开(公告)号：US06727331B2
公开(公告)日：2004-04-27
申请号：US10041002
申请日：2001-12-28
IPC分类号： C08F452
CPC分类号： C08F10/02 , C08F4/65912 , C08F10/00 , C08F110/02 , C08F4/6592 , C08F2500/03 , C08F2500/12 , C08F2500/11
摘要： A polyethylene having improved rheological properties is disclosed. The polyethylene has a melt index (MI2) from about 0.01 dg/min to about 50 dg/min and a melt strength (&eegr;) that satisfies MI2×&eegr;≧3.5. A process for making the polyethylene is also disclosed. The process uses an azaborolinyl-containing single-site catalyst in the presence of hydrogen, where the hydrogen consumption is controlled to be less than 30%.
摘要翻译： 公开了具有改善的流变特性的聚乙烯。 聚乙烯具有约0.01dg / min至约50dg / min的熔体指数（MI2）和满足MI2xeta = 3.5的熔体强度（η）。 还公开了制备聚乙烯的方法。 该方法在氢气存在下使用含有氮杂硼烷的单中心催化剂，其中氢消耗被控制在小于30％。
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7.发明授权公开(公告)号：US07238754B1
公开(公告)日：2007-07-03
申请号：US11299438
申请日：2005-12-12
CPC分类号： C08K5/14 , C08F8/00 , C08F2810/10 , C08L23/0815 , C08F210/16 , C08F210/14 , C08F2500/12 , C08F2500/04
摘要： A process for improving the melt characteristics of polyethylene resins is provided. The process involves contacting a polyethylene resin powder with a low level of free radical initiator at a temperature below the melting point of the resin.
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公开(公告)号：US20050228156A1
公开(公告)日：2005-10-13
申请号：US10819605
申请日：2004-04-07
申请人： Charles Holland , Harilaos Mavridis , Joel Mutchler , Sandor Nagy
发明人： Charles Holland , Harilaos Mavridis , Joel Mutchler , Sandor Nagy
IPC分类号： B32B27/32 , C08F4/6592 , C08F210/02 , C08F210/16 , F16B4/00
CPC分类号： B32B27/32 , B32B27/08 , B32B27/327 , B32B2307/31 , B32B2323/046 , B32B2439/70 , C08F210/16 , Y10T428/31938 , C08F210/14 , C08F2500/12 , C08F2500/03 , C08F2500/08 , C08F2500/26 , C08F210/08
摘要： A very low density polyethylene (VLDPE) film is disclosed. The film has a high average heat seal strength and physical strength. The VLDPE has a density within the range of about 0.880 to 0.914 g/cm3. The film has a seal initiation temperature lower than or equal to 95° C. and an average heat seal strength greater than or equal to 1.75 lb/in. The film has a machine-direction (MD) modulus greater than or equal to 12,000 psi. The film can be used as a monolayer film or as a layer of a multilayer film. It is suitable for heat sealable bags and many other applications.
摘要翻译： 公开了一种非常低密度的聚乙烯（VLDPE）膜。 该膜具有高的平均热封强度和体力。 VLDPE的密度在约0.880-0.914g / cm 3的范围内。 该膜具有低于或等于95℃的密封起始温度和大于或等于1.75磅/英寸的平均热密封强度。 该膜具有大于或等于12,000psi的机器方向（MD）模量。 该膜可以用作单层膜或多层膜的层。 适用于热封袋和许多其他应用。
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公开(公告)号：US06583209B2
公开(公告)日：2003-06-24
申请号：US09947836
申请日：2001-09-06
IPC分类号： C08L334
CPC分类号： C08L23/10 , C08K9/04 , C08L23/12 , C08L23/16 , C08L51/06 , C08L2205/08 , C08L2666/04
摘要： Propylene polymer composites containing modified clays and compatibilizing agents, more specifically hydrogenated tallow modified montmorillonite and maleic anhydride grafted propylene polymers, are provided. Concentrates or masterbatches used to prepare the composites are also described. The improved composites of the invention exhibit increased melt strength compared to the base resin and to composites similarly formulated using other types of modified clays. Moreover, the improved results are achievable at lower compatibilizer levels and lower ratios of compatibilizer to clay than has heretofore been considered practical.
摘要翻译： 提供了含有改性粘土和增容剂的丙烯聚合物复合材料，更具体地说是氢化牛脂改性蒙脱石和马来酸酐接枝丙烯聚合物。 还描述了用于制备复合材料的浓缩物或母料。 与基础树脂相比，本发明的改进的复合材料显示增加的熔体强度，并且与使用其它类型的改性粘土类似地配制的复合材料显示出增加的熔体强度。 此外，改善的结果可以在相对于较低的增容剂水平和相对于粘土的比例比以前被认为是实用的情况下是可实现的。
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公开(公告)号：US09029478B2
公开(公告)日：2015-05-12
申请号：US13022268
申请日：2011-02-07
申请人： Harilaos Mavridis
发明人： Harilaos Mavridis
CPC分类号： C08L23/0815 , C08J5/18 , C08J2323/08 , C08J2423/06 , C08L23/06 , C08L2314/06
摘要： A film comprising a polymer blend of: (a) 0.15 to 0.8 wt % of an LDPE having an MI of 0.1 to 0.6 dg/min; and (b) 99.2 to 99.85 wt % of an LLDPE produced with a single-site catalyst comprising a metallocene and having a haze (HZlldpe), dart impact (DIlldpe), MD-Tear (MDTlldpe), and a slice long chain branching index of at least 0.90 for any portion of the composition having a molecular weight of 100,000 or above, wherein the film has a haze (HZblend), a dart impact (DIblend), and an MD-Tear (MDTblend), and HZblend=a*HZlldpe, where a is 0.20 to 0.70; DIblend=b*DIlldpe, where b is 0.9 to 1.3; and MDTblend=c*MDTlldpe, where c is 0.8 to 1.1.
摘要翻译： 一种膜，其包含：（a）0.15至0.8重量％的MI为0.1至0.6dg / min的LDPE的聚合物共混物; 和（b）99.2〜99.85重量％的由包含茂金属并具有雾度（HZlldpe），飞镖撞击（DIlldpe），MD-撕裂（MDTlldpe））和切片长链支化指数的单中心催化剂制备的LLDPE 对于具有100,000或更高分子量的组合物的任何部分，至少为0.90，其中该膜具有雾度（HZblend），飞镖冲击（DIblend）和MD-撕裂（MDTblend），HZblend = a * HZlldpe，其中a为0.20至0.70; DIblend = b * DIlldpe，其中b为0.9至1.3; 和MDTblend = c * MDTlldpe，其中c为0.8至1.1。
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