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50 条记录 (耗时 0.075 秒)

    Sheets, films, fibers foams or latices prepared from blends of substantially random interpolymers
    16.
    发明授权
    Sheets, films, fibers foams or latices prepared from blends of substantially random interpolymers 有权
    片材，薄膜，纤维泡沫或由基本上无规共聚体的共混物制成的胶乳

    公开(公告)号：US06319577B1

    公开(公告)日：2001-11-20

    申请号：US09715565

    申请日：2000-11-17

    申请人： Martin J. Guest ,  John J. Gathers ,  Yunwa W. Cheung ,  Pak-Wing S. Chum

    发明人： Martin J. Guest ,  John J. Gathers ,  Yunwa W. Cheung ,  Pak-Wing S. Chum

    IPC分类号： C08L2302

    CPC分类号： C08L23/04 ,  C08L23/0815 ,  C08L23/0838 ,  C08L25/02 ,  C08L2205/02 ,  Y10T428/1397 ,  Y10T428/2913 ,  C08L2666/04

    摘要： A sheet, film, fiber, foam or latex prepared from a blend of polymeric materials comprising a plurality of substantially random interpolymers comprising vinyl aromatic and ethylene and/or alpha olefin monomers and wherein: a) the amount of polymer units derived from said vinyl aromatic monomer in any interpolymer component differs from that amount in another interpolymer component by at least 0.5 mole percent; b) the amount of polymer units derived from said vinyl aromatic monomer in the blend is greater than about 19 mole percent; and wherein c) the observed stress relaxation of the resulting blend is greater than the additive stress relaxation of the of the individual blend components.

    摘要翻译： 由包含乙烯基芳族和乙烯和/或α-烯烃单体的多个基本上无规的互聚物的聚合材料的共混物制备的片材，膜，纤维，泡沫或胶乳，其中：a）衍生自所述乙烯基芳族化合物的聚合物单元的量 任何互聚物组分中的单体与另一互聚物组分中的量不同至少为0.5摩尔％; b）衍生自共混物中所述乙烯基芳族单体的聚合物单元的量大于约19摩尔％ 并且其中c）所得共混物的观察到的应力松弛大于各个共混组分的添加应力松弛。

    Polyolefin elastomer blends exhibiting improved properties
    17.
    发明授权
    Polyolefin elastomer blends exhibiting improved properties 失效
    表现出改进性能的聚烯烃弹性体共混物

    公开(公告)号：US6005053A

    公开(公告)日：1999-12-21

    申请号：US784681

    申请日：1997-01-22

    申请人： Deepak R. Parikh ,  Pak-Wing S. Chum ,  Rajen M. Patel ,  Klye G. Kummer ,  Pradeep Jain ,  Thomas J. McKeand, Jr. ,  Ronald P. Markovich ,  Timothy E. Clayfield ,  Wasif Ahmed Khan

    发明人： Deepak R. Parikh ,  Pak-Wing S. Chum ,  Rajen M. Patel ,  Klye G. Kummer ,  Pradeep Jain ,  Thomas J. McKeand, Jr. ,  Ronald P. Markovich ,  Timothy E. Clayfield ,  Wasif Ahmed Khan

    IPC分类号： C08L23/04 ,  C08L23/08 ,  C08L91/00 ,  C08L33/02

    CPC分类号： C08L23/0815 ,  C08L2205/02 ,  C08L91/00

    摘要： Polymer mixtures are disclosed which comprise at least one homogeneously branched ethylene polymer (A) and at least one ethylene polymer (B) having a crystallinity which is at least 7% greater than the crystallinity of polymer (A) with certain provisos. A process for making a molded article using the disclosed polymer mixtures is disclosed as well as films, film layers, coatings and molded articles formed from those mixtures. These mixtures have several advantages over polymer compositions of the prior art, including improved properties at elevated temperatures such as improved softening point under load, improved hardness, improved toughness, improved 100% modulus of elasticity, improved compression set, improved ability to prevent oil bleed out at lower temperatures when the mixture contains oil and reduced injection molding cycle time. The mixtures retain their performance advantages even when substantial amounts of additives such as oil and filler are incorporated into the mixture. The mixtures may also be crosslinked after they are formed into the shape of an article to form vulcanized elastomeric products. The polymer mixtures have utility in a variety of applications.

    摘要翻译： 公开了包含至少一种均匀支化的乙烯聚合物（A）和至少一种乙烯聚合物（B）的聚合物混合物，其结晶度比聚合物（A）的结晶度大至少7％，具有某些条件。 公开了使用所公开的聚合物混合物制备模塑制品的方法以及由这些混合物形成的薄膜，薄膜层，涂层和模塑制品。 这些混合物具有优于现有技术的聚合物组合物的几个优点，包括在升高的温度下改进的性能，例如负载下改进的软化点，改进的硬度，改进的韧性，改进的100％弹性模量，改进的压缩永久变形，改进的防止油渗出的能力 当混合物含有油和降低注塑周期时，在较低的温度下出来。 即使将大量的添加剂如油和填料加入到混合物中，混合物也保持其性能优势。 在混合物形成制品的形状以形成硫化的弹性体产品之后，它们也可以交联。 聚合物混合物可用于各种应用。

    Performance super high flow ethylene polymer compositions
    18.
    发明授权
    Performance super high flow ethylene polymer compositions 失效
    性能超高流量乙烯聚合物组合物

    公开(公告)号：US5346732A

    公开(公告)日：1994-09-13

    申请号：US924775

    申请日：1992-08-04

    申请人： Shih-Yaw Lai ,  Lonnie G. Hazlitt ,  Pak-Wing S. Chum

    发明人： Shih-Yaw Lai ,  Lonnie G. Hazlitt ,  Pak-Wing S. Chum

    IPC分类号： C08L23/06 ,  C08L23/08 ,  B29D22/00

    CPC分类号： C08L23/06 ,  C08L23/0815 ,  C08L2207/20 ,  Y10T428/1352 ,  Y10T428/139

    摘要： Super high flow ethylene polymer compositions comprising at least one linear ethylene polymer are disclosed which have improved processability for use in making thermally formed articles (e.g., thin-walled lids, cups and containers). The compositions have a processing index from about 0.005 KPoise to about 1 KPoise and are particularly useful in thermal forming processes having shear rates of at least 2,000 sec.sup.-1 (e.g., injection molding processes). The compositions can be used to make thin-walled lids and cups and have good environmental stress crack resistance and Gullwing Tear properties.

    摘要翻译： 公开了包含至少一种直链乙烯聚合物的超高流动乙烯聚合物组合物，其具有改进的加工性，用于制造热成型制品（例如，薄壁盖，杯和容器）。 组合物具有约0.005KPise至约1KPoise的加工指数，并且特别适用于剪切速率为至少2,000秒-1（例如注射成型工艺）的热成型工艺。 组合物可用于制备薄壁盖和杯，并具有良好的耐环境应力开裂性和鸥鸥撕裂性能。