Metallocene compounds with two indenyl-type ligands linked in the 4 position by means of a divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. In particular, it is possible to prepare saturated or unsaturated elastomeric copolymers of ethylene characterized by valuable properties, such as low ash content and uniform distribution of the comonomers in the polymer chain. Metallocenes of the following generic structure are disclosed:
具有两个
茚基型
配体,通过二价桥连基在4位连接的
金属茂化合物可作为催化剂组分,适用于烯烃的聚合。特别是,可以制备出饱和或不饱和的
乙烯弹性共聚物,具有有价值的特性,如低灰分含量和共聚单体在聚合物链中的均匀分布。公开了以下通用结构的
金属茂化合物: