Propylene polymer composites having improved melt strength
    1.
    发明授权
    Propylene polymer composites having improved melt strength 失效
    具有改善熔体强度的丙烯聚合物复合材料

    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

    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。

    Ethylene polymerization process
    2.
    发明申请
    Ethylene polymerization process 有权
    乙烯聚合工艺

    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

    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。

    Method for producing doubly oriented polymers
    4.
    发明授权
    Method for producing doubly oriented polymers 失效
    双取向聚合物的制备方法

    公开(公告)号:US5171815A

    公开(公告)日:1992-12-15

    申请号:US705330

    申请日:1991-05-24

    IPC分类号: B29C55/18 B29C55/28 B29C67/00

    摘要: A process is disclosed for the solid phase preparation of doubly oriented synthetic polymeric material from an orientable amorphous but crystallizable or a semicrystalline thermoplastic polymeric workpiece comprising: (a) presenting the conditioned workpiece, at the entry mode of an opposing pair of solid rollers that are spaced apart a distance substantially less than the thickness of the workpiece; and (b) deforming the workpiece by compressive passage through the paired rollers at a nominal deformation ratios of at least 2 to 1. The deformation drawing is carried out between the glass transition temperature and the melting point of the polymeric material, by applying a draw tension insufficient to cause tensile failure of the workpiece.

    摘要翻译: 公开了一种从可取向的非晶态但可结晶的或半结晶的热塑性聚合物工件制备双取向合成聚合物材料的方法,包括:(a)在相对的一对实心辊的进入模式下呈现经调节的工件, 间隔开远小于工件厚度的距离; 和(b)以至少为2:1的标称变形率的压缩通过成对的辊子使工件变形。变形拉伸在玻璃化转变温度和聚合物材料的熔点之间通过施加拉伸 张力不足造成工件拉伸破坏。

    Soft touch polyolefin compositions
    5.
    发明授权
    Soft touch polyolefin compositions 失效
    软接触聚烯烃组合物

    公开(公告)号:US06949605B2

    公开(公告)日:2005-09-27

    申请号:US10457753

    申请日:2003-06-09

    摘要: The present invention provides a soft touch soft touch thermoplastic olefin composition. The soft touch thermoplastic olefin composition comprises a polypropylene-ethylene copolymer and a cross-linked or uncross-linked ethylene-propylene thermoplastic elastomer. The thermoplastic elastomer is present in a sufficient amount that the soft touch thermoplastic olefin composition has a 1% flexural secant modulus from about from about 10,000 psi to about 80,000 psi.

    摘要翻译: 本发明提供一种软触摸软触摸热塑性烯烃组合物。 软触摸热塑性烯烃组合物包含聚丙烯 - 乙烯共聚物和交联或未交联的乙烯 - 丙烯热塑性弹性体。 热塑性弹性体以足够的量存在,使得软接触热塑性烯烃组合物具有约10,000psi至约80,000psi的1%弯曲割线模量。

    Peroxide modified PP/PE blends with superior melt strength
    6.
    发明授权
    Peroxide modified PP/PE blends with superior melt strength 失效
    具有优异熔体强度的过氧化物改性PP / PE共混物

    公开(公告)号:US5639818A

    公开(公告)日:1997-06-17

    申请号:US212630

    申请日:1994-03-11

    摘要: The instant invention is directed to a process for preparing peroxide modified polypropylene/polyethylene blends that have superior extrusion coating properties. More specifically, the peroxide modified PP/PE blends produced by the instant invention exhibit a pronounced viscosity upturn at low frequencies (about

    摘要翻译: 本发明涉及一种制备具有优异的挤出涂布性能的过氧化物改性聚丙烯/聚乙烯共混物的方法。 更具体地说,本发明生产的过氧化物改性的PP / PE共混物在动态流变学数据中在低频(约<1.0rad / sec)下表现出显着的粘度上升。 具体地说,共混物在低于约1.0rad / sec的频率下显示其动态复数粘度ηa和动态储能模量G'值的增加。 本发明还涉及由本发明的方法生产的过氧化物改性的PP / PE共混物。 与现有技术的混合物相比,由本发明方法制备的这种聚合物共混物表现出优异的动态神学性质,特别是熔体强度。 此外,本发明的过氧化物改性的PP / PE共混物显示出显着降低的拉伸共振行为。 因此,具有上述特征的本发明的PP / PE共混物将适用于各种各样的应用,例如热成型,吹塑和优选的挤出涂层。

    Linear low density polyethylene compositions and films
    8.
    发明授权
    Linear low density polyethylene compositions and films 失效
    线性低密度聚乙烯组合物和薄膜

    公开(公告)号:US07439290B2

    公开(公告)日:2008-10-21

    申请号:US11033793

    申请日:2005-01-12

    IPC分类号: C07C67/08

    摘要: Linear low density polyethylene compositions suitable for the production of films having improved breathability are provided. The compositions which are comprised of a linear low density polyethylene base resin, a functionalized polyolefin and a polyester polyol are melt blended under conditions of mixing and shear to increase their melt elasticity.

    摘要翻译: 提供适用于生产具有改善的透气性的膜的线性低密度聚乙烯组合物。 由线性低密度聚乙烯基础树脂,官能化聚烯烃和聚酯多元醇组成的组合物在混合和剪切条件下熔融共混以增加其熔体弹性。

    Method for producing doubly oriented polymers
    9.
    发明授权
    Method for producing doubly oriented polymers 失效
    双取向聚合物的制备方法

    公开(公告)号:US5049347A

    公开(公告)日:1991-09-17

    申请号:US593343

    申请日:1990-10-01

    IPC分类号: B29C55/18 B29C55/28 B29C67/00

    摘要: A process for the solid phase preparation of doubly oriented synthetic polymeric material from an orientable amorphous but crystallizable or a semicrystalline thermoplastic polymeric workpiece comprising: (a) presenting the conditioned workpiece, at the entry mode of an opposing pair of solid rollers that are spaced apart a distance substantially less than the thickness of the workpiece; and (b) deforming the workpiece by compressive passage through the paired rollers at a nominal deformation ratios of at least 2 to 1. The deformation drawing is carried out between the glass transition temperature and the melting point of the polymeric material, by applying a draw tension insufficient to cause tensile failure of the workpiece.

    摘要翻译: 从可取向的非晶态但可结晶的或半结晶的热塑性聚合物工件固相制备双取向的合成聚合材料的方法,包括:(a)在相对的间隔开的一对实心辊的进入模式下呈现经调节的工件 远远大于工件的厚度; 和(b)以至少为2:1的标称变形率的压缩通过成对的辊子使工件变形。变形拉伸在玻璃化转变温度和聚合物材料的熔点之间通过施加拉伸 张力不足造成工件拉伸破坏。