Ethylene polymers
    4.
    发明公开
    Ethylene polymers 失效
    聚乙烯混合物

    公开(公告)号:EP0533154A1

    公开(公告)日:1993-03-24

    申请号:EP92115909.1

    申请日:1992-09-17

    CPC classification number: C08L23/06 C08L23/0815 C08L2207/20 C08L2666/06

    Abstract: Ethylene polymer blends of a virgin or recycled low molecular weight ethylene polymer produced from a chromium-based catalyst and a high molecular weight ethylene polymer produced from a titanium-based catalyst, exhibit excellent processing characteristics, environmental stress crack resistance and stiffness. These ethylene polymer blends are useful for use in bottle, film, pipe, and/or drum applications.

    Abstract translation: 由铬基催化剂生产的原始或再循环的低分子量乙烯聚合物和由钛基催化剂生产的高分子量乙烯聚合物的乙烯聚合物共混物表现出优异的加工特性,耐环境应力开裂性和刚度。 这些乙烯聚合物共混物可用于瓶,膜,管和/或鼓应用中。

    High-temperature slurry polymerization of ethylene
    7.
    发明公开
    High-temperature slurry polymerization of ethylene 失效
    Hochtemperatur - 分散体聚合。

    公开(公告)号:EP0480377A2

    公开(公告)日:1992-04-15

    申请号:EP91117139.5

    申请日:1991-10-08

    Abstract: This invention relates to a high-temperature slurry polymerization of ethylene where: the hexene is generated in situ; a chromium catalyst system is used; a trialkyl boron or a polyalkyl silane compound is used as a cocatalyst; the temperature of the reaction is above the foul curve temperature for a specific copolymer density; and where the polymerization takes place in a continuous loop reactor which has isobutane as a diluent. Additionally, hexene can be withdrawn, or added, to adjust the density.

    Abstract translation: 本发明涉及乙烯的高温淤浆聚合,其中:原位产生己烯; 使用铬催化剂体系; 三烷基硼或多烷基硅烷化合物用作助催化剂; 对于特定的共聚物密度,反应温度高于恶劣曲线温度; 并且其中聚合在具有异丁烷作为稀释剂的连续回路反应器中进行。 此外,可以取出或加入己烯以调节密度。

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