POLYOLEFIN ELASTOMER BLENDS EXHIBITING IMPROVED PROPERTIES
    5.
    发明授权
    POLYOLEFIN ELASTOMER BLENDS EXHIBITING IMPROVED PROPERTIES 失效
    具有改进性能的聚烯烃弹性体组合物

    公开(公告)号:EP0876427B1

    公开(公告)日:2002-09-25

    申请号:EP97903105.1

    申请日:1997-01-22

    IPC分类号: C08L23/16 C08L23/04 C08L23/08

    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 percent 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 percent 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 cross-linked 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.

    POLYOLEFIN ELASTOMER BLENDS EXHIBITING IMPROVED PROPERTIES
    7.
    发明公开
    POLYOLEFIN ELASTOMER BLENDS EXHIBITING IMPROVED PROPERTIES 失效
    具有改进性能的聚烯烃弹性体组合物

    公开(公告)号:EP0876427A1

    公开(公告)日:1998-11-11

    申请号:EP97903105.0

    申请日:1997-01-22

    IPC分类号: C08L23 C08L91

    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 percent 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 percent 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 cross-linked 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.

    FABRICATED ARTICLES MADE FROM ETHYLENE POLYMER BLENDS
    10.
    发明公开
    FABRICATED ARTICLES MADE FROM ETHYLENE POLYMER BLENDS 失效
    由乙烯聚合物混合物制成的制品

    公开(公告)号:EP0696300A1

    公开(公告)日:1996-02-14

    申请号:EP94914235.0

    申请日:1994-04-19

    IPC分类号: C08L23 C08J5 C08F210

    摘要: The disclosed ethylene polymer compositions have et least one homogeneously branched substantially linear ethylene/α-olefin interpolymer and at least one heterogeneously branched ethylene polymer. The homogeneously branched linear or substantially linear ethylene/α-olefin interpolymer has a density from about 0.88 to about 0.935 g/cm3 and a slope of strain hardening coefficient greater than or equal to about 1.3. Films made from such formulated compositions have surprisingly good impact and tensile properties, and have an especially good combination of modulus and toughness.

    摘要翻译: 所公开的乙烯聚合物组合物具有至少一种均匀支化的基本上线性的乙烯/α-烯烃互聚物和至少一种非均匀支化的乙烯聚合物。 均匀支化的线性或基本上线性的乙烯/α-烯烃共聚体具有约0.88至约0.935g / cm 3的密度和大于或等于约1.3的应变硬化系数的斜率。 由这种配制的组合物制成的薄膜具有令人惊讶的良好的冲击和拉伸性能,并且具有模数和韧性的特别好的组合。