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    High density polyethylene barrier grade resins and films, methods for making same
    71.
    发明申请
    High density polyethylene barrier grade resins and films, methods for making same 失效
    高密度聚乙烯屏障级树脂和薄膜，制备方法

    公开(公告)号：US20020042490A1

    公开(公告)日：2002-04-11

    申请号：US09896916

    申请日：2001-06-29

    发明人： Michael McLeod ,  Nguong van Nguyen

    IPC分类号： C08F110/00

    CPC分类号： C08J5/18 ,  C08J2323/06 ,  Y10T428/31909

    摘要： High density polyethylene barrier grade films comprising at least one layer of polymer wherein the polymer comprises a density greater than about 0.955 g/cc and a rheological breadth parameter of greater than about 0.22 are disclosed. Methods for producing such films on a film line with a neck height configuration of greater than about 15 inches are disclosed.

    摘要翻译： 公开了包含至少一层聚合物的高密度聚乙烯屏障级膜，其中聚合物包含大于约0.955g / cc的密度和大于约0.22的流变宽度参数。 公开了在颈部高度构型大于约15英寸的膜线上制造这种膜的方法。

    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using a halohydrocarbon
    72.
    发明授权
    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using a halohydrocarbon 有权
    使用卤代烃形成无定形超高分子量聚α-烯烃减阻剂的方法

    公开(公告)号：US6162773A

    公开(公告)日：2000-12-19

    申请号：US396247

    申请日：1999-09-15

    申请人： Gerald B. Eaton ,  Michael J. Monahan ,  Robert J. Tipton

    发明人： Gerald B. Eaton ,  Michael J. Monahan ,  Robert J. Tipton

    IPC分类号： C08F210/14 ,  C08F2/00 ,  C08F2/08 ,  C08F2/42 ,  C08F2/44 ,  C08F4/44 ,  C08F4/642 ,  C08F4/649 ,  C08F10/00 ,  C08F110/00 ,  C08F210/00 ,  C08F210/16 ,  C08L23/00 ,  C09K3/00 ,  C10L1/16 ,  C10M107/10 ,  C10M143/08 ,  F17D1/16 ,  C10M143/00

    CPC分类号： C10M143/08 ,  C08F10/00 ,  C08F110/00 ,  C08F210/00 ,  C09K3/00 ,  C10L1/1641 ,  C10L1/165 ,  C10L1/1658 ,  C10M107/10 ,  F17D1/16 ,  C08F2/42 ,  C08F4/6493 ,  C08F2/002 ,  C08F4/6428 ,  C08F2/08 ,  C08F2/005 ,  C08F2500/12

    摘要： A composition including polyalphaolefins that function as drag reducing agents and a process for the preparation of polyalphaolefins that function as drag reducing agents are disclosed. The process includes contacting alpha olefin monomers with a catalyst system, which includes a catalyst and an activator (co-catalyst) in a reactant mixture. The catalyst is a transition metal catalyst, preferably titanium trichloride, and the co-catalyst may include an alkylaluminoxane, alone or in combination, with a dialkylaluminum halide or a halohydrocarbon. The polymerization of the alpha olefin monomers produces a non-crystalline, ultra-high molecular weight polyalphaolefin having an inherent viscosity of at least 10 dL/g. The addition of the alkylaluminoxane during the polymerization process provides for a non-crystalline, ultra-high molecular weight polyalphaolefin and a more uniform molecular weight distribution of the resulting polyalphaolefin, thereby creating a drag reducing agent superior to known drag reducing agents. A process for forming a drag reducing agent comprising a non-crystalline, ultra-high molecular weight polyalphaolefin having an inherent viscosity of about at least 10 dL/g and a process for reducing drag in a conduit are also disclosed.

    摘要翻译： 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与催化剂体系接触，催化剂体系包括反应物混合物中的催化剂和活化剂（助催化剂）。 催化剂是过渡金属催化剂，优选三氯化钛，并且助催化剂可以单独或与二烷基卤化铝或卤代烃单独或组合地使用烷基铝氧烷。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的非结晶超高分子量聚α-烯烃。 在聚合过程中加入烷基铝氧烷提供非结晶，超高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布，从而产生优于已知减阻剂的减阻剂。 还公开了一种形成减阻剂的方法，其包含特性粘度为约10dL / g的非结晶，超高分子量聚α-烯烃和减少管道中的阻力的方法。

    Process for producing low molecular-weight poly-1-olefins
    76.
    发明授权
    Process for producing low molecular-weight poly-1-olefins 失效
    低分子量聚-1-烯烃的制备方法

    公开(公告)号：US5917100A

    公开(公告)日：1999-06-29

    申请号：US864211

    申请日：1997-05-28

    申请人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

    发明人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

    IPC分类号： C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00 ,  C10L1/16 ,  C07C2/24

    CPC分类号： C08F10/00 ,  Y10S526/905

    摘要： A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.

    摘要翻译： 由粒径为100〜3000nm的烷氧基镁分散体与选自钛，锆，钒，铬的金属化合物反应形成的催化剂，然后与含氯有机铝化合物反应形成的催化剂具有 甚至在分子量调节剂如氢气的存在下也具有非常好的氢响应性和高活性。 因此，催化剂非常适合于生产低分子量聚烯烃。 该催化剂使得生产具有减少的残余灰分含量的蜡成为可能。 通过与该催化剂的悬浮聚合制备的聚合物粉末的大粒径和低细粉含量可以容易地除去悬浮介质并干燥。 此外，催化剂有利地用于溶液聚合，并且由于粒径大，用于制备低分子量聚-1-烯烃的气相聚合。

    Composition of and process for forming polyalphaolefin drag reducing agents
    77.
    发明授权
    Composition of and process for forming polyalphaolefin drag reducing agents 失效
    形成聚α-烯烃减阻剂的组成和工艺

    公开(公告)号：US5869570A

    公开(公告)日：1999-02-09

    申请号：US619840

    申请日：1996-03-19

    申请人： Gerald B. Eaton ,  Michael J. Monahan

    发明人： Gerald B. Eaton ,  Michael J. Monahan

    IPC分类号： C08F2/08 ,  C08F2/44 ,  C08F4/642 ,  C08F10/00 ,  C08F110/00 ,  C08F210/00 ,  C08F210/16 ,  C08L23/00 ,  C09K3/00 ,  C10L1/16 ,  C10M143/08 ,  F17D1/16

    CPC分类号： F17D1/16 ,  C08F10/00 ,  C09K3/00 ,  C10L1/1641 ,  C10L1/165 ,  C10L1/1658 ,  C10M143/08 ,  C08F110/00 ,  C08F210/00

    摘要： A composition including polyalphaolefins that function as drag reducing agents and a process for the preparation of polyalphaolefins that function as drag reducing agents are disclosed. The process includes contacting alphaolefin monomers with catalyst particles in a polymerization mixture that includes a hydrocarbon solvent. The polymerization of the alphaolefin monomers produces polyalphaolefin drag reducing agents having an inherent viscosity of at least 10 dL/g. During polymerization of the polyalphaolcfin monomers, localized micelles compromising high molecular weight polyalphaolefin polymer are formed in micellar zones around the catalyst particles. The polymerization is conducted in the presence of a viscosity reducing agent that includes a substantially hydrophobic dispersant. The viscosity reducing agent is present in an amount sufficient to reduce the viscosity of the reaction mixture and disperse the localized micelles. The addition of the dispersant during the polymerization process provides for high molecular weight polyalphaolefin and a more uniform molecular weight distribution of the resulting polyalphaolefin. A process of forming a polyalphaolefin drag reducing agent in one or more polymerization reactors and a process for reducing drag in a conduit are also disclosed.

    摘要翻译： 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与包含烃溶剂的聚合混合物中的催化剂颗粒接触。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的聚α烯烃减阻剂。 在聚α烯烃单体聚合期间，在催化剂颗粒周围的胶束区域中形成了损害高分子量聚α-烯烃聚合物的局域化胶束。 聚合反应在包含基本上疏水性分散剂的粘度降低剂的存在下进行。 降粘剂的存在量足以降低反应混合物的粘度并分散局部胶束。 在聚合过程中加入分散剂提供了高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布。 还公开了在一个或多个聚合反应器中形成聚α-烯烃减阻剂的方法和减少管道中的阻力的方法。