申请人:Polimeri Europa S.p.A.
公开号:EP1408054A1
公开(公告)日:2004-04-14
Catalytic composition for the (co) polymerization of ethylene and other α-olefins, including a metallocene complex of a metal M of group 4 of the periodic table or the product obtainable from the same combined with a suitable activator, wherein said metallocene complex includes at least one cyclopentadienyl group and at least one unsaturated hydrocarbyl organic group bonded to the metal M, having the following formula (I):
-(Ax Dy Uz) RI (I)
wherein:
A represents any monomeric unit deriving from a vinylaromatic group polymerizable by means of anionic polymerization, having from 6 to 20 carbon atoms;
D represents any monomeric unit deriving from a conjugated diolefin polymerizable by means of anionic polymerization, having from 4 to 20 carbon atoms;
U represents any generic optional monomeric unit deriving from an unsaturated compound co-polymerizable with any of the above conjugated diolefins D or vinylaromatic compounds A;
RI represents hydrogen or a hydrocarbyl group having from 1 to 20 carbon atoms,
each index "x" and "y" can be independently zero or an integer, provided the sum (x+y) is equal to or higher than 2, preferably between 2 and 50, more preferably between 2 and 25;
"z" can be zero or an integer ranging from 1 to 20.
用于乙烯和其他α-烯烃(共)聚合的催化组合物,包括元素周期表第 4 族金属 M 的茂金属络合物或由其与合适的活化剂结合得到的产物,其中所述茂金属络合物包括至少一个环戊二烯基团和至少一个与金属 M 结合的不饱和烃基有机基团,具有下式(I):
-(Ax Dy Uz) RI (I)
其中
A 代表来自可通过阴离子聚合方式聚合的乙烯芳香族基团的任何单体单元,具有 6 至 20 个碳原子;
D 代表源自可通过阴离子聚合方式聚合的共轭二烯烃的任何单体单元,具有 4 至 20 个碳原子;
U 代表从可与上述任何共轭二烯烃 D 或乙烯基芳香族化合物 A 共聚合的不饱和化合物衍生出的任何通用任选单体单元;
RI 代表氢或具有 1 至 20 个碳原子的烃基、
每个指数 "x "和 "y "可以独立地为零或整数,条件是总和(x+y)等于或大于 2,最好在 2 至 50 之间,更优选在 2 至 25 之间;
z "可以是零,也可以是 1 到 20 之间的整数。