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    Impact-modified thermoplastic polyolefins and articles fabricated therefrom
    1.
    发明授权
    Impact-modified thermoplastic polyolefins and articles fabricated therefrom 有权
    冲击改性的热塑性聚烯烃及其制造的制品

    公开(公告)号：US6140420A

    公开(公告)日：2000-10-31

    申请号：US204008

    申请日：1998-12-01

    申请人： Kalyan Sehanobish ,  Larry A. Meiske ,  Shaofu Wu ,  Pak-Wing Steve Chum

    发明人： Kalyan Sehanobish ,  Larry A. Meiske ,  Shaofu Wu ,  Pak-Wing Steve Chum

    IPC分类号： C08J3/20 ,  C08F10/02 ,  C08L23/00 ,  C08L23/08 ,  C08L23/12 ,  C08L23/16 ,  C08L51/00 ,  C08L101/00 ,  C08F8/30

    CPC分类号： C08L23/12 ,  C08L101/00 ,  C08L23/16 ,  C08L23/0815 ,  C08L2314/06 ,  Y10T428/1352

    摘要： Melt processible thermoplastic compositions and method for making them are described, these compositions comprising a thermoplastic polymer resin matrix selected from the group consisting of thermoplastic polyurethanes, polyvinyl chlorides, styrenics, engineering thermoplastics, and polyolefins, at least about 25 percent (by weight based on the total composition) of an elastomeric impact modifier dispersed as discrete particles in the thermoplastic matrix (a); and at least about 10 percent (by weight based on the total composition) of at least one homogeneous linear or substantially linear ethylene polymer dispersed as discrete particles in at least the impact modifier (b), the ethylene polymer having a molecular weight distribution less than 3.5 and a density of at least 0.04 g/cm.sup.3 higher than the density of the impact modifier component (b), wherein the elastic modulus of the thermoplastic component (a) is at least 200 times greater than the elastic modulus of the impact modifier component (b). These thermoplastic compositions have improved processability. Processes for fabricating articles from them are described. The articles made with these compositions have improved properties such as low temperature impact strength, improved percent elongation to break, greater stiffness, and improved weld line strength, making them useful for applications requiring both strength and flexibility in low temperature environments, such as automotive components and facia.

    摘要翻译： 描述了可熔融加工的热塑性组合物及其制备方法，这些组合物包含选自热塑性聚氨酯，聚氯乙烯，苯乙烯，工程热塑性塑料和聚烯烃的热塑性聚合物树脂基体，至少约25％（以 分散在热塑性基体（a）中的离散颗粒的弹性体抗冲改性剂的总组成）; 至少约10％（基于总组合物的重量计）至少一种均匀的直链或基本上线性的乙烯聚合物，其至少在至少抗冲改性剂（b）中分散成分散的颗粒，乙烯聚合物的分子量分布小于 3.5，并且比冲击改性剂组分（b）的密度高至少0.04g / cm 3的密度，其中热塑性组分（a）的弹性模量是冲击改性剂组分（a）的弹性模量的至少200倍 （b）。 这些热塑性组合物具有改善的加工性能。 描述从它们制造制品的方法。 用这些组合物制成的制品具有改进的性能，例如低温冲击强度，改善的断裂延伸百分比，更大的刚度和更好的焊接线强度，使得它们可用于在低温环境中要求强度和柔性的应用，例如汽车部件 和面。

    Impact-modified thermoplastic polyolefins and articles fabricated therefrom
    2.
    发明授权
    Impact-modified thermoplastic polyolefins and articles fabricated therefrom 失效
    冲击改性的热塑性聚烯烃及其制造的制品

    公开(公告)号：US5861463A

    公开(公告)日：1999-01-19

    申请号：US741648

    申请日：1996-10-31

    申请人： Kalyan Sehanobish ,  Shaofu Wu ,  Larry A. Meiske ,  Pak-Wing Steve Chum

    发明人： Kalyan Sehanobish ,  Shaofu Wu ,  Larry A. Meiske ,  Pak-Wing Steve Chum

    IPC分类号： C08J3/20 ,  C08F10/02 ,  C08L23/00 ,  C08L23/08 ,  C08L23/12 ,  C08L23/16 ,  C08L51/00 ,  C08L101/00 ,  C08F30/00

    CPC分类号： C08L23/12 ,  C08L101/00 ,  C08L23/16 ,  C08L23/0815 ,  C08L2314/06 ,  Y10T428/1352

    摘要： Melt processible thermoplastic compositions and method for making them are described, these compositions comprising a) a polypropylene matrix, b) at least about 25 percent (by weight based on the total composition) of an elastomeric impact modifier dispersed as discrete particles in the polypropylene matrix (a); and c) at least about 10 percent (by weight based on the total composition) of at least one homogeneous linear or substantially linear ethylene polymer dispersed as discrete particles in at least the impact modifier (b), the ethylene polymer having a molecular weight distribution less than 3.5 and a density of at least 0.04 g/cm.sup.3 higher than the density of the impact modifier component (b), wherein the elastic modulus of the polypropylene (a) is at least 200 times greater than the elastic modulus of the impact modifier component (b).These thermoplastic compositions have improved processability. Processes for fabricating articles from them are described. The articles made with these compositions have improved properties such as low temperature impact strength, improved percent elongation to break, greater stiffness, and improved weld line strength, making them useful for applications requiring both strength and flexibility in low temperature environments, such as automotive components and facia.

    摘要翻译： 描述了可熔融加工的热塑性组合物及其制备方法，这些组合物包含a）聚丙烯基体，b）至少约25重量％（基于总组合物的重量）作为分散颗粒分散在聚丙烯基体中的弹性体抗冲改性剂 （一个）; 和至少一种在至少一种抗冲改性剂（b）中作为离散颗粒分散的均匀线性或基本上线性的乙烯聚合物的至少约10重量％（基于总组合物计）），乙烯聚合物具有分子量分布 小于3.5，并且比冲击改性剂组分（b）的密度高至少0.04g / cm 3的密度，其中聚丙烯（a）的弹性模量比冲击改性剂的弹性模量大至少200倍 组分（b）。 这些热塑性组合物具有改善的加工性 描述从它们制造制品的方法。 用这些组合物制成的制品具有改进的性能，例如低温冲击强度，改善的断裂延伸百分比，更大的刚度和更好的焊接线强度，使得它们可用于在低温环境中要求强度和柔性的应用，例如汽车部件 和面。