公开(公告)号：US20100234543A1

公开(公告)日：2010-09-16

申请号：US12734585

申请日：2008-10-15

申请人： Alain Berardi ,  Andre Frederich ,  Jan Dominique ,  Jean-Jacques Kuhlburger ,  Anthony Sgard ,  Alain Van Daele

发明人： Alain Berardi ,  Andre Frederich ,  Jan Dominique ,  Jean-Jacques Kuhlburger ,  Anthony Sgard ,  Alain Van Daele

IPC分类号： C08F4/50

CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F4/6492 ,  C08F4/6426 ,  C08F2500/12 ,  C08F210/14

摘要： The present invention relates to a process for polymerisation of ethylene, in particular a process which comprises using a catalyst system comprising comprising a catalyst system comprising: i) a solid catalyst comprising Ti, Mg and halogen, ii) a first activator which is at least one trialkylaluminium compound of the formula AIR3, where each R is independently a C2 to C20 alkyl radical, and iii) a second activator which is at least one alkylaluminium chloride of the formula AlR′2Cl, where each R′ is independently a C2 to C20 alkyl radical, characterised in that the second activator is introduced directly in the polymerisation reactor, without precontact with the solid catalyst, continuously or semi-continuously and at a maximum rate of introduction at any time corresponding to less than 10 ppm by weight of chlorine relative to the rate of polyethylene production.

摘要翻译： 本发明涉及一种聚合乙烯的方法，特别是包括使用包括催化剂体系的催化剂体系的方法，所述催化剂体系包含：i）包含Ti，Mg和卤素的固体催化剂，ii）至少第一活化剂 一种式为AIR3的三烷基铝化合物，其中每个R独立地为C 2至C 20烷基，和iii）第二活化剂，其为至少一种式AlR'2Cl的烷基氯化铝，其中每个R'独立地为C 2至C 20 烷基，其特征在于，第二活化剂直接在聚合反应器中引入，不与固体催化剂预接触，连续或半连续并且以最大引入速率在任何时间对应于小于10ppm重量的氯相对 达到聚乙烯生产率。