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    Modified polyethylene compositions
    1.
    发明申请
    Modified polyethylene compositions 有权
    改性聚乙烯组合物

    公开(公告)号：US20060173123A1

    公开(公告)日：2006-08-03

    申请号：US11333421

    申请日：2006-01-17

    申请人： Henry Yang ,  Bryan Chapman ,  David Lohse ,  Bruce Lundmark ,  Anthony Poloso ,  Sandra Schregenberger ,  Manika Varma-Nair ,  Wen Li

    发明人： Henry Yang ,  Bryan Chapman ,  David Lohse ,  Bruce Lundmark ,  Anthony Poloso ,  Sandra Schregenberger ,  Manika Varma-Nair ,  Wen Li

    IPC分类号： A61K9/16

    CPC分类号： C08L23/04 ,  C08K5/01 ,  C08L23/06 ,  C08L23/10 ,  C08L2205/02 ,  C08L2666/06

    摘要： The present invention relates to a composition comprising more than 25 weight % (based on the weight of the composition) of one or more ethylene polymers having an Mw of 20,000 g/mole or more and at least 0.1 weight % of a liquid hydrocarbon modifier where the modifier has: 1) a viscosity index of 120 or more, and 2) an kinematic viscosity of 3 to 3000 cSt at 100° C., and 3) a pour point of −10° C. or less, and 4) a flash point of 200° C. or more; and wherein the modifier contains less than 5 weight % of functional groups selected from hydroxide, aryls, substituted aryls, halogens, alkoxys, carboxylates, esters, acrylates, oxygen, nitrogen, and carboxyl, based upon the weight of the modifier.

    摘要翻译： 本发明涉及一种组合物，该组合物包含大于25重量％（基于组合物的重量）的一种或多种乙烯聚合物，其具有20,000g / mol或更高的摩尔和至少0.1wt 液体烃改性剂的重量％，其中改性剂具有：1）粘度指数为120以上，2）100℃下的运动粘度为3〜3000cSt，3）倾点为-10℃ 或更低，4）闪点为200℃以上; 并且其中所述改性剂基于改性剂的重量包含小于5重量％的选自氢氧化物，芳基，取代的芳基，卤素，烷氧基，羧酸酯，酯，丙烯酸酯，氧，氮和羧基的官能团。

    Polyethylene compositions for rotational molding
    5.
    发明申请
    Polyethylene compositions for rotational molding 有权
    用于旋转成型的聚乙烯组合物

    公开(公告)号：US20050215719A1

    公开(公告)日：2005-09-29

    申请号：US11078320

    申请日：2005-03-14

    申请人： Arnold Lustiger ,  David Lohse ,  Blair Graham

    发明人： Arnold Lustiger ,  David Lohse ,  Blair Graham

    IPC分类号： C08L23/08 ,  C08L23/00

    CPC分类号： C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2314/06 ,  Y10T428/1352 ,  Y10T428/1386 ,  Y10T428/31938 ,  C08L2666/06

    摘要： Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.

    摘要翻译： 提供适合于滚塑的聚乙烯共混组合物，滚塑制品和滚塑制品的方法。 聚乙烯组合物包括熔体指数为0.4-3.0g / 10min，密度为0.910-0.930g / cm 3的第一聚乙烯; 和熔体指数为10〜30g / 10min，密度为0.945〜0.975g / cm 3的第二聚乙烯。 该组合物的密度为0.930至0.955g / cm 3，熔体指数为1.5至12g / 10min，第一和第二聚乙烯的密度在0.030至0.048g / cm 3。 这些组合物表现出改善的物理性能，例如环境应力开裂抗力和艾佐德冲击强度。

    Polyethylene compositions for rotational molding
    7.
    发明申请
    Polyethylene compositions for rotational molding 有权
    用于旋转成型的聚乙烯组合物

    公开(公告)号：US20050256266A1

    公开(公告)日：2005-11-17

    申请号：US11186443

    申请日：2005-07-21

    申请人： Arnold Lustiger ,  David Lohse ,  Blair Graham ,  Ronald Cooke

    发明人： Arnold Lustiger ,  David Lohse ,  Blair Graham ,  Ronald Cooke

    IPC分类号： C08F8/00 ,  C08L23/06 ,  C08L23/08

    CPC分类号： B29C41/04 ,  B29C41/003 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2314/02 ,  C08L2666/06

    摘要： Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.

    摘要翻译： 提供适合于滚塑的聚乙烯共混组合物，滚塑制品和滚塑制品的方法。 聚乙烯组合物包括熔体指数为0.4-3.0g / 10min，密度为0.910-0.930g / cm 3的第一聚乙烯; 和熔体指数为10〜30g / 10min，密度为0.945〜0.975g / cm 3的第二聚乙烯。 该组合物的密度为0.930至0.955g / cm 3，熔体指数为1.5至12g / 10min，第一和第二聚乙烯的密度在0.030至0.048g / cm 3。 这些组合物表现出改善的物理性能，例如环境应力开裂抗力和艾佐德冲击强度。 由组合物制备的制品也可以表现出改进的抗冲击性能，增强的延性断裂性能和改进的抗挠曲性，其代表蠕变和抗疲劳性的组合。

    Disentangled chain telechelic polymers
    8.
    发明授权
    Disentangled chain telechelic polymers 失效
    断开链式遥爪聚合物

    公开(公告)号：US5238634A

    公开(公告)日：1993-08-24

    申请号：US817573

    申请日：1992-01-07

    申请人： Lewis J. Fetters ,  Edward N. Kresge ,  David Lohse

    发明人： Lewis J. Fetters ,  Edward N. Kresge ,  David Lohse

    IPC分类号： B29C55/00 ,  B29D7/01 ,  C08J5/18 ,  D01F6/30

    CPC分类号： C08J5/18 ,  B29C55/005 ,  B29D7/01 ,  D01F6/30 ,  B29K2096/04 ,  B29K2105/0061 ,  C08J2323/16

    摘要： The present invention provides a process for producing high elongation elastomers and highly oriented films and fibers from polymers having specific associative groups, such that the end groups on each macromolecule tend to associate with one another after the macromolecules are in a disentangled state, i.e., in the form of a semi-dilute solution. This association is of a force strong enough to prevent the macromolecular chains from slipping past one another and reentangling when the polymer is moderately heated or further concentrated in solution. The association may be manipulated, i.e., is reversible, under a change in parameter such as temperature, pH, polarity of the solvent medium and like parameters. The associated polymer macromolecules can be drawn as a gel from a semi-dilute solution into a highly aligned disentangled polymer to yield shaped articles.

    摘要翻译： 本发明提供了一种用于由具有特定缔合基团的聚合物制备高伸长弹性体和高取向膜和纤维的方法，使得每个高分子上的端基在大分子处于解缠状态之后倾向于相互结合，即，在 半稀释溶液的形式。 该缔合是具有足够强度的力，以防止大分子链彼此滑动并且当聚合物适度加热或进一步在溶液中浓缩时重新连接。 可以在诸如温度，pH，溶剂介质的极性等参数的变化等操作，即可逆的关联。 相关联的聚合物大分子可以作为凝胶从半稀释溶液中拉伸成高度对准的解缠结聚合物以产生成型制品。

    Synthesis and use of well-defined, highly-branched saturated hydrocarbon polymers
    10.
    发明申请
    Synthesis and use of well-defined, highly-branched saturated hydrocarbon polymers 有权
    明确定义的高度支化的饱和烃聚合物的合成和使用

    公开(公告)号：US20070135583A1

    公开(公告)日：2007-06-14

    申请号：US11296999

    申请日：2005-12-08

    申请人： David Lohse ,  Cesar Garcia-Franco ,  Nikos Hadjichristidis

    发明人： David Lohse ,  Cesar Garcia-Franco ,  Nikos Hadjichristidis

    IPC分类号： C08F236/00

    CPC分类号： C08C19/44 ,  C08C19/02 ,  C08F36/04 ,  C08F110/02 ,  C08F236/10 ,  C08F255/02 ,  C08G83/003 ,  C08L9/00 ,  C08L23/0815 ,  C08L51/06 ,  C08L101/005 ,  C08L2205/14 ,  C08L2205/16 ,  C08L2666/06 ,  C08L2666/02 ,  C08L2666/04 ,  C08F4/48 ,  C08F2500/09

    摘要： The present invention relates to a method to produce highly branched polymers with a polyolefin backbone structure of ethylene and precise control of the nature of the branching. In particular, the distribution of branch length and number of branches can be more precisely controlled via the polymerization method of the present invention. The method comprises using anionic chemistry to make unsaturated polydienes with a well-defined, highly-branched structure, and then hydrogenating these polydienes to form highly branched or dendritic saturated hydrocarbon polymers. Highly branched or dendritic polyethylene, ethylene-propylene copolymer and atactic polypropylene are among the saturated hydrocarbon polymers that can be anionically synthesized via the proper selection of diene monomer type, coupling agent, and hydrogenation conditions. The highly branched or dendritic saturated hydrocarbon polymers of the present invention find application in injection molding and extrusion processes as a minor additive for improving processability of linear polyolefins by delaying the onset of melt fracture, and correspondingly increasing melt throughput rates. An additional benefit is that the mechanical properties of the polyolefinic film, sheet, pipe or fiber produced with minor amounts of highly branched or dendritic saturated hydrocarbon polymers of the present disclosure are not negatively impacted.

    摘要翻译： 本发明涉及一种生产具有乙烯聚烯烃骨架结构的高度支化聚合物的方法，并且精确控制了支化性质。 特别地，可以通过本发明的聚合方法更精确地控制分支长度和分支数的分布。 该方法包括使用阴离子化学制备具有明确定义的高支化结构的不饱和聚二烯，然后将这些聚二烯氢化形成高度支化或树枝状饱和烃聚合物。 高分支或树枝状聚乙烯，乙烯 - 丙烯共聚物和无规立构聚丙烯是通过二烯单体类型，偶联剂和氢化条件的适当选择可阴离子合成的饱和烃聚合物之一。 本发明的高度支化或树枝状饱和烃聚合物可用于注射成型和挤出方法，作为通过延迟熔体破裂开始并改善熔体通过速率来改善线性聚烯烃的加工性的次要添加剂。 另外的好处是，用本发明的少量高支化或树枝状饱和烃聚合物生产的聚烯烃膜，片，管或纤维的机械性能不会受到负面影响。