Bimodal polyethylene for blow-moulding applications
    10.
    发明授权
    Bimodal polyethylene for blow-moulding applications 有权
    用于吹塑应用的双峰聚乙烯

    公开(公告)号:US08609792B2

    公开(公告)日:2013-12-17

    申请号:US13522761

    申请日:2011-02-07

    IPC分类号: C08F2/00 C08G85/00

    摘要: The invention relates to A process for the polymerization of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3,wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0,and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3,in the presence of a Ziegler-Natta catalyst system.

    摘要翻译: 本发明涉及一种在至少两个串联连接的淤浆环流反应器中聚合乙烯以生产聚乙烯树脂的方法,该树脂具有双峰分子量分布,至少7.0的分子量分布MWD, HLMI为1至100g / 10分钟,密度为0.935至0.960g / cm3,其中在一个反应​​器中基于聚乙烯树脂的总重量为30至47wt%的高分子量(HMW)聚乙烯 产生HL275为0.05〜1.8g / 10min(相当于HLMI为0.01〜1.56g / 10min),密度为0.925〜0.942g / cm3,MWD为5.0以上的级分,以及 在另一反应器中,在齐格勒 - 纳塔催化剂体系的存在下,制备HLMI为10-1500g / 10min,密度为0.960-0.975g / cm3的低分子量(LMW)聚乙烯级分。