申请人:——
公开号:US20040242408A1
公开(公告)日:2004-12-02
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R
1
and R
1′
independently of one another represent branched or unbranched C
1
-C
7
alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; R
2
represents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); R
3
and R
4
independently of one another represent CH
2
, CF
2
oder C(R
1
)
2
; m stands for 0, 1 or 2; n stands for 0, 1 or 2; o stands for 0 or 1, all independently of one another. Said systems exhibit improved characteristics in terms of activity and stereoselectivity in comparison to conventional co-catalysts such as AlEt
3
and can act simultaneously as co-catalysts and stereoselectivity promoters.
1
本发明涉及使用一般式(I)的含氮铝有机配合物作为丙烯的异相聚合反应的协同催化剂。在该式中,R、R'、R1和R1'独立地表示支链或直链C1-C7烷基,环烷基,烯基,环烯基,芳基或炔基;R2表示来自II组的未取代、单烷基化或多烷基化和/或单氟化或多氟化芳香烃;R3和R4独立地表示CH2,CF2或C(R1)2;m表示0、1或2;n表示0、1或2;o表示0或1,所有这些都是独立的。与传统的协同催化剂如AlEt3相比,该系统在活性和立体选择性方面表现出改进的特性,并可以同时作为协同催化剂和立体选择性促进剂。