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    • 3. 发明申请
    • NOVEL POLYMERS
    • 新型聚合物
    • WO2011089112A1
    • 2011-07-28
    • PCT/EP2011/050604
    • 2011-01-18
    • INEOS MANUFACTURING BELGIUM NVCHAI, Choon KooiDHEUR, Luc, Marie, GhislainKOCH, BenoitSPITZMESSER, Stefan Klaus
    • CHAI, Choon KooiDHEUR, Luc, Marie, GhislainKOCH, BenoitSPITZMESSER, Stefan Klaus
    • C08F210/16
    • C08F210/16C08F210/14C08F4/6592C08F2500/12C08F2500/17
    • Copolymers of ethylene and α-olefins are provided having (a) a density (D) in the range 0.900 - 0.940 g/cm3, (b) a melt index MI 2 (2.16 kg, 190°C) in the range of 0.01 - 50 g/10 min, (c) a melt index MI 2 (2.16 kg, 190°C) and Dow Rheology Index (DRI) satisfying the equation [DRI/MI 2 ] > 2.65, and (d) a Dart Drop Impact (DDI) in g of a blown film having a thickness of 25 μm produced from the copolymer satisfying the equation DDI ≥ 19000 x {1 - Exp [-750(D - 0.908) 2 ] } x {Exp [(0.919 - D)/0.0045] } The copolymers may suitably be prepared by use of metallocene catalysts and are preferably prepared in multistage processes earned out in loop reactors in the slurry phase. The copolymers exhibit long chain branching as defined by Dow Rheology Index (DRI) and exhibit unexpected improvements in mechanical properties, in particular dart drop impact, when extruded into blown films.
    • 提供了乙烯和α-烯烃的共聚物,其具有(a)密度(D)在0.900-0.940克/厘米3的范围内,(b)熔体指数MI2(2.16千克,190℃)在0.01-50范围内 g / 10分钟,(c)满足方程[DRI / MI2]> 2.65的熔体指数MI2(2.16kg,190℃)和Dow流变指数(DRI),和(d)Dart Drop Impact g满足方程DDI = 19000×{1-Exp [-750(D-0.908)2]} x {Exp [(0.919-D)/0.0045]}的共聚物制成的厚度为25μm的吹塑薄膜 共聚物可以适当地通过使用茂金属催化剂制备,并且优选以在淤浆相中的环管反应器中获得的多阶段方法制备。 共聚物表现出由Dow Rheology Index(DRI)定义的长链支化,并且当挤出成吹塑薄膜时,其机械性能特别是飞镖降落冲击表现出意想不到的改进。