Ethylene polymer blends and process for forming film
    1.
    发明授权
    Ethylene polymer blends and process for forming film 失效
    乙烯聚合物共混物和成膜工艺

    公开(公告)号:US4547551A

    公开(公告)日:1985-10-15

    申请号:US624315

    申请日:1984-06-25

    IPC分类号: C08L23/04 C08L23/18 C08L23/06

    摘要: Ethylene polymer blends of a high molecular weight ethylene polymer, preferably an ethylene-mono-1-olefin copolymer, and a low molecular weight ethylene polymer preferably an ethylene homopolymer, both preferably with narrow molecular weight distribution and low levels of long chain branching exhibit excellent film properties and good environmental stress crack behavior superior to that expected for polyethylene of comparable density and melt flow. These resins are useful for the manufacture of film or in blow molding techniques, the production of pipes and wire coating.

    摘要翻译: 优选具有窄分子量分布和低水平的长链支化的高分子量乙烯聚合物,优选乙烯 - 单-1-烯烃共聚物和低分子量乙烯聚合物,优选乙烯均聚物的乙烯聚合物共混物显示出优异的 膜性能和良好的环境应力裂纹行为优于可比密度和熔体流动的聚乙烯的预期。 这些树脂可用于制造薄膜或吹塑技术,生产管材和丝线涂层。

    Ethylene polymer blends
    2.
    发明授权
    Ethylene polymer blends 失效
    乙烯聚合物共混物

    公开(公告)号:US4461873A

    公开(公告)日:1984-07-24

    申请号:US391056

    申请日:1982-06-22

    摘要: Ethylene polymer blends of a high molecular weight ethylene polymer, preferably an ethylene-mono-1-olefin copolymer, and a low molecular weight ethylene polymer preferably an ethylene homopolymer, both preferably with narrow molecular weight distribution and low levels of long chain branching exhibit excellent film properties and good environmental stress crack behavior superior to that expected for polyethylene of comparable density and melt flow. These resins are useful for the manufacture of film or in blow molding techniques, the production of pipes and wire coating.

    摘要翻译: 优选具有窄分子量分布和低水平的长链支化的高分子量乙烯聚合物,优选乙烯 - 单-1-烯烃共聚物和低分子量乙烯聚合物,优选乙烯均聚物的乙烯聚合物共混物显示出优异的 膜性能和良好的环境应力裂纹行为优于可比密度和熔体流动的聚乙烯的预期。 这些树脂可用于制造薄膜或吹塑技术,生产管材和丝线涂层。

    Polymer composition and preparation method
    7.
    发明授权
    Polymer composition and preparation method 失效
    聚合物组成及制备方法

    公开(公告)号:US4598128A

    公开(公告)日:1986-07-01

    申请号:US474767

    申请日:1983-03-14

    摘要: An ethylene polymer composition is provided, the composition being a blend of a first ethylene polymer and a second ethylene polymer, the second ethylene polymer characterized by molecules having long chain Y-branches. The blend can be prepared by an extrusion process in which a portion of the polyethylene fed to the process is irradiated and the irradiated and non-irradiated polymers are blended by melt extrusion. The blends exhibit high flow activation energies and good blow-molding properties.

    摘要翻译: 提供乙烯聚合物组合物,该组合物是第一乙烯聚合物和第二乙烯聚合物的共混物,第二乙烯聚合物的特征在于具有长链Y分支的分子。 共混物可以通过挤出方法制备,其中将一部分进料到该方法中的聚乙烯进行照射,并且通过熔融挤出将辐照和未辐射的聚合物共混。 共混物表现出高流动活化能和良好的吹塑性能。