CATALYST COMPOSITION
    1.
    发明申请
    CATALYST COMPOSITION 审中-公开
    催化剂组合物

    公开(公告)号:WO1995017434A1

    公开(公告)日:1995-06-29

    申请号:PCT/US1994014473

    申请日:1994-12-16

    CPC classification number: C08F10/00 C08F210/02 C08F4/6425 C08F2/34

    Abstract: A catalyst composition for copolymerizing ethylene with alpha-olefins is prepared by supporting a magnesium compound and a titanium compound on a solid, inert porous carrier, and activating the precursor with a mixture of dimethylaluminum chloride and a trialkylaluminum compound. Products with a bimodal molecular weight distribution are produced which are free of alpha-olefin oligomers.

    Abstract translation: 通过将镁化合物和钛化合物负载在固体惰性多孔载体上并用氯化二甲基铝和三烷基铝化合物的混合物活化前体来制备乙烯与α-烯烃共聚的催化剂组合物。 产生具有双峰分子量分布的产物,其不含α-烯烃低聚物。

    HIGH IMPACT LLDPE FILMS
    3.
    发明申请
    HIGH IMPACT LLDPE FILMS 审中-公开
    高强度LLDPE膜

    公开(公告)号:WO1997039035A1

    公开(公告)日:1997-10-23

    申请号:PCT/US1997005657

    申请日:1997-04-04

    Abstract: Blown films of linear low density polyethylene are produced by a high stalk process comprising extruding the linear low density polyethylene through an annular die to form an extruded tube of molten material, cooling the extruded tube while drawing the tube so cooled, to maintain the tube diameter identical to that of the annular die and expanding the tube or bubble to attenuate the walls thereof by introducing a gas to the interior of the tube or bubble. The resulting films are characterized by superior impact strength and MD tear resistance.

    Abstract translation: 线性低密度聚乙烯的吹塑薄膜是通过高秸秆方法生产的,包括通过环形模头挤出线性低密度聚乙烯,形成挤出的熔融材料管,冷却挤压管,同时拉制冷却管,以保持管直径 与环形模具相同,并且通过将气体引导到管或气泡的内部而膨胀管或气泡以减弱其壁。 所得膜的特征在于优异的冲击强度和MD抗撕裂性。

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