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    • 7. 发明申请
    • PHYSICAL BLEND OF POLYETHYLENES
    • 聚乙烯的物理混合物
    • WO03051937A8
    • 2003-09-12
    • PCT/EP0214171
    • 2002-12-12
    • ATOFINA RESMAZIERS ERIC
    • MAZIERS ERIC
    • B65D1/02B65D1/00B65D1/12C08F10/02C08F297/08C08L23/04C08L23/06C08L23/08
    • C08L23/06C08L23/0815C08L2314/06C08L2666/06
    • This invention discloses a process for the preparation of polyethylene resins having a multimodal molecular weight distribution that comprises the steps of: (i) providing a first high molecular weight metallocene-produced linear low density polyethylene (mLLDPE) resin having a density of from 0.920 to 0.940 g/cm and a HLMI of from 0.05 to 2 g/10 min; (ii) providing a second high density polyethylene (HDPE) prepared either with a Ziegler-Natta or with a chromium based catalyst, said polyethylene having a density ranging from 0.950 to 0.970 g/cm and a HLMI of from 5 to 100 g/10 min; (iii) physically blending together the first and second polyethylenes to form a polyethylene resin having a semi-high molecular weight, a broad or multimodal molecular weight disribution, a density ranging from 0.948 to 0.958 g/cm and a HLMI of from 2 to 20 g/10 min.
    • 本发明公开了一种制备具有多峰分子量分布的聚乙烯树脂的方法,其包括以下步骤:(i)提供第一高分子量金属茂生产的线性低密度聚乙烯(mLLDPE)树脂,其密度为0.920至 0.940g / cm 3,HLMI为0.05〜2g / 10min; (ii)提供用齐格勒 - 纳塔或铬基催化剂制备的第二高密度聚乙烯(HDPE),所述聚乙烯的密度范围为0.950-0.970g / cm 3,HLMI为5-100 g / 10分钟; (iii)将第一和第二聚乙烯物理混合在一起以形成具有半高分子量,宽或多峰分子量分布的聚乙烯树脂,密度范围为0.948至0.958g / cm 3,HLMI为 2〜20g / 10min。