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1.发明授权Polyethlene film composition having broad molecular weight distribution and improved bubble stability 失效具有宽分子量分布和改善的气泡稳定性的聚乙烯薄膜组合物
公开(公告)号：US5962598A
公开(公告)日：1999-10-05
申请号：US688021
申请日：1996-07-26
IPC分类号： C08F8/06 , C08F8/50 , C08F110/02 , C08F210/02
CPC分类号： C08J5/18 , C08F8/50 , C08F110/02 , C08F2810/10 , C08J2323/08
摘要： A polyethylene film composition characterized as having a broad molecular weight distribution, Mw/Mm 15, a density of 0.920 to 0.970 g/cc, a melt flow index (190.degree. C./2.16 kg) of 0.01 to 0.2 g/10 min., the polyethylene film composition being produced by melt extruding a linear copolymer at a temperature of at least 180.degree. C. in the presence of an amount of a free radical initiator sufficient to improve bubble stability without any significant reduction in the tear strength of film produced from the composition as compared with film produced from the linear copolymer that has not been treated with the free radical initiator.
摘要翻译： 特征在于具有宽分子量分布，Mw / Mm 15，密度为0.920至0.970g / cc，熔体流动指数（190℃/ 2.16kg）为0.01至0.2g / 10min的聚乙烯薄膜组合物。 ，所述聚乙烯薄膜组合物通过在至少180℃的温度下在一定量的自由基引发剂的存在下熔融挤出制备，所述自由基引发剂足以改善气泡稳定性，而不会显着降低所产生的膜的撕裂强度 与由未用自由基引发剂处理的线性共聚物制得的膜相比，
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2.发明授权Process for producing polyethylene film composition having broad molecular weight distribution and improved bubble stability 有权制备具有宽分子量分布和改善气泡稳定性的聚乙烯薄膜组合物的方法
公开(公告)号：US6147167A
公开(公告)日：2000-11-14
申请号：US337460
申请日：1999-06-21
IPC分类号： C08F8/06 , C08F8/50 , C08F110/02 , C08F210/02
CPC分类号： C08J5/18 , C08F8/50 , C08F110/02 , C08F2810/10 , C08J2323/08
摘要： A process for producing a polyethylene film composition, comprising melt extruding a linear copolymer of ethylene and at least one other olefin having from 3 to 8 carbon atoms, said linear copolymer having a bimodal distribution comprising a high molecular weight fraction having a weight average molecular weight of at least 600,000 and a low molecular weight fraction having a weight average molecular weight of less than 20,000 at a temperature of from 195 to 285.degree. C. in the presence of oxygen in an amount of from about 0.5 to about 6% by volume to improve bubble stability without any significant reduction in tear strength of film produced from said melt extruded linear copolymer.
摘要翻译： 一种生产聚乙烯薄膜组合物的方法，包括熔融挤出乙烯和至少一种具有3至8个碳原子的其它烯烃的线性共聚物，所述线性共聚物具有双峰分布，其包含具有重均分子量的高分子量分数 至少为600,000，在氧存在下，在195-285℃的温度下，重均分子量小于20,000的低分子量级分，其量为约0.5至约6体积％ 改善泡沫稳定性，而不会显着降低由所述熔融挤出的线性共聚物制备的膜的撕裂强度。
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公开(公告)号：US07423098B2
公开(公告)日：2008-09-09
申请号：US11333576
申请日：2006-01-17
申请人： Philip J. Garrison , Charles S. Holland , Mark P. Mack , Linda N. Winslow , Everett O. Lewis , James R. Clark , Leonard V. Cribbs , Bradley P. Etherton , Jean A. Merrick-Mack , Paula L. Nygard
发明人： Philip J. Garrison , Charles S. Holland , Mark P. Mack , Linda N. Winslow , Everett O. Lewis , James R. Clark , Leonard V. Cribbs , Bradley P. Etherton , Jean A. Merrick-Mack , Paula L. Nygard
IPC分类号： C08F4/6192 , C08F4/6592 , C08F210/14 , C08F210/16
CPC分类号： C08F210/16 , Y10S526/905 , C08F2/001 , C08F2/14 , C08F210/08 , C08F2500/12 , C08F2500/26 , C08F210/14
摘要： An ethylene polymerization process is disclosed. Ethylene is polymerized in two slurry reaction zones with a C6-C10 alpha-olefin in the presence of a single-site catalyst capable of making a high molecular weight polyolefin. The process yields medium density and linear low density polyethylene having a bimodal molecular weight distribution and a melt index from about 0.10 to about 0.80. Films from the polyethylene have superior impact properties.
摘要翻译： 公开了一种乙烯聚合方法。 在能够制备高分子量聚烯烃的单中心催化剂的存在下，乙烯在两个浆料反应区中与C 6 -C 10α-烯烃聚合。 该方法产生具有双峰分子量分布和约0.10至约0.80的熔体指数的中密度和线性低密度聚乙烯。 聚乙烯薄膜具有优异的冲击性能。
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公开(公告)号：US6127484A
公开(公告)日：2000-10-03
申请号：US302059
申请日：1999-04-29
CPC分类号： C08L23/04 , C08L2205/02 , C08L2314/02 , C08L2314/06
摘要： A multiple stage or multiple zone process for making olefin polymers is disclosed. A single-site catalyst, preferably one that contains a heteroatomic ligand, is used in the first stage or zone, and a Ziegler-Natta catalyst is used at a higher temperature in later stages or zones. A parallel multiple zone process is also described. The processes, which can be performed adiabatically, give polymers with improved thermal processing ability.
摘要翻译： 公开了制备烯烃聚合物的多级或多区域方法。 在第一阶段或区域中使用单中心催化剂，优选含有杂原子配体的单中心催化剂，并且在后期阶段或区域中以更高的温度使用齐格勒 - 纳塔催化剂。 还描述了并行多区域过程。 可以绝热地进行的方法给具有改进的热处理能力的聚合物。
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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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公开(公告)号：US07005489B2
公开(公告)日：2006-02-28
申请号：US10673896
申请日：2003-09-29
申请人： Sandor Nagy , Mark P. Mack
发明人： Sandor Nagy , Mark P. Mack
IPC分类号： C08F4/76
CPC分类号： C07F15/04 , C08F110/02 , C08F4/7006
摘要： A new class of zwitterionic metallocycles is disclosed. A positively charged Group 4-10 transition metal is chelated to two heteroatoms and one of the heteroatoms has a substituent bearing a negative charge. We have found that substitution in this position stabilizes the zwitterion form of the metallocycle. The zwitterionic metallocycle is useful for olefin polymerizations.
摘要翻译： 公开了一类新的两性离子金属摩尔。 带正电的4-10族过渡金属螯合成两个杂原子，其中一个杂原子具有负电荷的取代基。 我们发现在这个位置上的取代稳定了金属摩尔的两性离子形式。 两性离子金属摩尔可用于烯烃聚合。
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公开(公告)号：US4478952A
公开(公告)日：1984-10-23
申请号：US476906
申请日：1983-03-18
申请人： Mark P. Mack , Charles T. Berge
发明人： Mark P. Mack , Charles T. Berge
CPC分类号： C08F10/00 , Y10S526/943
摘要： A method for the preparation of supported Ziegler-Natta catalysts comprising contacting a transition metal alkoxide and/or siloxide compound with a magnesium-containing reagent. The magnesium reagent is prepared in the presence of a magnesium chloride support utilizing an anhydrous and oxygen-free mixture of magnesium halide and magnesium metal, slurried in a hydrocarbon solvent. A halogenated hydrocarbon is added to produce the magnesium-containing reagent. Thereafter the transition metal alkoxide and/or siloxide compound is mixed with the slurry. An alkylating agent is added to form an active supported olefin polymerization catalyst.
摘要翻译： 一种制备负载齐格勒 - 纳塔催化剂的方法，包括使过渡金属醇盐和/或硅氧化物化合物与含镁试剂接触。 镁试剂在氯化镁载体的存在下，使用卤化镁和镁金属的无水和无氧混合物，在烃溶剂中浆化制备。 加入卤代烃以制备含镁试剂。 然后将过渡金属醇盐和/或硅氧烷化合物与浆料混合。 加入烷基化剂以形成活性负载型烯烃聚合催化剂。
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公开(公告)号：US4412065A
公开(公告)日：1983-10-25
申请号：US383389
申请日：1982-06-01
申请人： Charles T. Berge , Mark P. Mack
发明人： Charles T. Berge , Mark P. Mack
IPC分类号： C08G63/695 , C08G77/60
CPC分类号： C08G77/60 , C08G63/6956
摘要： The present invention describes novel hydrocarbon-insoluble poly-silyl esters and a method for forming these compounds utilizing carboxylic acid salts with silicon reagents in the presence of phase transfer catalysts.
摘要翻译： 本发明描述了新型烃不溶性聚甲硅烷基酯和在相转移催化剂存在下用硅试剂形成这些化合物的方法。
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公开(公告)号：US4187158A
公开(公告)日：1980-02-05
申请号：US893855
申请日：1978-04-06
申请人： Mark P. Mack
发明人： Mark P. Mack
CPC分类号： C08J7/02 , C08L23/20 , C08J2323/20
摘要： Polybutene-1 in type II form can be accelerated in a phase transformation to the stable polybutene-1 type I form by applying a volatile solvent such as n-hexane and allowing the solvent to evaporate. The phase transformation can be accelerated by additional treatment with heat below the melt temperature of about 90.degree. C. and/or ultrasonic sound.
摘要翻译： 通过施加正己烷等挥发性溶剂并使溶剂蒸发，可以加速II型形式的聚丁烯-1的相转变成稳定的聚丁烯-1型。 可以通过在低于约90℃的熔体温度和/或超声波的温度下进行额外处理来加速相变。
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公开(公告)号：US08034461B2
公开(公告)日：2011-10-11
申请号：US11054202
申请日：2005-02-09
CPC分类号： B32B27/08 , B29C55/023 , B29C55/06 , B29K2023/0625 , B29K2023/0641 , B29K2023/065 , B29K2023/083 , B32B7/005 , B32B7/02 , B32B27/18 , B32B27/32 , B32B2250/242 , B32B2264/0214 , B32B2307/54 , B32B2307/558 , B32B2307/5825 , B32B2553/00 , Y10S428/91 , Y10T428/31913
摘要： A method for making multilayer thin films is disclosed. The method of comprises orienting a thick multilayer film in the machine direction at a drawdown ratio effective to produce a multilayer thin film. The thick multilayer film has a thickness within the range of 1 mil to 5 mils and comprises at least one layer of a linear low density polyethylene (LLDPE) and at least one layer of a high density polyethylene (HDPE) or a medium density polyethylene (MDPE).
摘要翻译： 公开了制备多层薄膜的方法。 该方法包括以有效产生多层薄膜的拉伸比在机器方向上定向厚多层膜。 厚多层膜的厚度在1密耳至5密耳的范围内，并且包括至少一层线性低密度聚乙烯（LLDPE）和至少一层高密度聚乙烯（HDPE）或中密度聚乙烯（ MDPE）。
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