申请人:——
公开号:US20040102591A1
公开(公告)日:2004-05-27
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear &agr;-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected &agr;-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected &agr;-diimine nickel complexes with ethylene.
本文披露了一种聚合乙烯、无环烯烃和/或选定的环状烯烃,以及可选的选定的烯酸酯或羧酸和其他单体的过程。这些聚合物由选定的过渡金属化合物催化,有时也由其他协同催化剂催化。由于其中一些聚合物表现出一些活性聚合物的特征,因此可以轻松制备嵌段共聚物。许多生产的聚合物通常是新颖的,特别是在其微结构方面,这使得其中一些聚合物具有不寻常的性质。披露了许多新颖的催化剂,以及制备它们的一些新颖过程。制造的聚合物可用作弹性体、模塑树脂、粘合剂等。本文还描述了通过使用镍化合物具有选定的α-二亚胺配体和选定的Lewis或Bronsted酸的催化剂体系,或通过将选定的α-二亚胺镍配合物与乙烯接触,合成线性α-烯烃的方法。