Metallocene compounds, processes for the preparation thereof, catalyst components for olefin polymerization, and processes for the production of olefin polymers
申请人:Chisso Corporation
公开号:US06326493B1
公开(公告)日:2001-12-04
A metallocene compound is provided wherein to a transition metal compound is bonded a multidentate compound wherein a substituted cycloalkadienyl ring CA1 having therein a heteroaromatic group Ra containing an oxygen, sulfur or nitrogen atom on a cycloalkadienyl ring, preferably the five-membered ring thereof, and an unsubstituted or substituted cycloalkadienyl group CA2 or —(R1)N—, —O—, —S— or —(R1)P—, preferably CA2, more preferably a substituted cycloalkadienyl group identical with CA1 are bonded through a divalent linking group. The metallocene compound is suitable as a principal ingredient of a catalyst for the polymerization of olefins, particularly achieving a very high effect in making the molecular weight of a polypropylene higher.
提供了一种金属茂化合物,其中过渡金属化合物与多配位化合物结合,所述多配位化合物包括一个含有氧、硫或氮原子的杂芳基团Ra的取代环烷二烯基环CA1,优选为其中的五元环,以及一个未取代或取代的环烷二烯基团CA2或-(R1)N-、-O-、-S-或-(R1)P-,优选为CA2,更优选为与CA1相同的取代环烷二烯基团,两者通过一个二价连接基团结合。该金属茂化合物适用于催化烯烃聚合的主要成分,特别是在使聚丙烯的分子量更高方面具有非常高的效果。