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    • 4. 发明申请
    • POLYETHYLENE COMPOSITION
    • 聚乙烯组合物
    • WO2016172099A1
    • 2016-10-27
    • PCT/US2016/028271
    • 2016-04-19
    • EXXONMOBIL CHEMICAL PATENTS INC.
    • DOUFAS, AntoniosSANDERS, David F.HOLTCAMP, Matthew W.YE, XuanNORMAN, AlexanderHULE, Rohan A.RANGWALL, Hasain
    • C08F110/02C08F210/16C08F4/6592
    • C08F210/16B01J31/2295C08F4/6592C08F110/02C08F2500/04C08F2800/10
    • This invention relates to ethylene polymers obtained using a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds (a bridged monocyclopentadienyl group 4 transition metal compound and a biscyclopentadientyl group 4 transition metal compound), where the fluorided support has not been calcined at a temperature of 400°C or more, and is preferably produced using a wet mixing method, such as an aqueous method. The ethylene polymers have: 1) at least 50 mol% ethylene; 2) a reversed comonomer index, mol%, (RCI,m) of 85 or more; 3) a Comonomer Distribution Ratio-2 (CDR-2,m) of the percent comonomer at the z average molecular weight divided by the percent comonomer at the weight average molecular weight plus the number average molecular weight divided by 2 ([% comonomer at Mz] / [% comonomer at ((Mw+Mn)/2)] as determined by GPC of 2.3 or more; and 4) a density of 0.91 g/cc or more.
    • 本发明涉及使用包括氟化二氧化硅,烷基铝氧烷激活剂和至少两种茂金属催化剂化合物(桥连单环戊二烯基4过渡金属化合物和双环戊二烯基4过渡金属化合物)的催化剂体系获得的乙烯聚合物,其中氟化载体未被 在400℃以上的温度下煅烧,优选使用湿式混合法,例如水性法制造。 乙烯聚合物具有:1)至少50mol%的乙烯; 2)反相共聚单体指数mol%,(RCI,m)为85以上; 3)平均分子量百分比的共聚单体分布比-2(CDR-2,m)除以重均分子量加上数均分子量除以2的共聚单体百分比([%共聚单体在 Mz] / [通过GPC测定的((Mw + Mn)/ 2)]下的[%共聚单体]];以及4)密度为0.91g / cc以上。