This invention relates to novel bridged a hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a C
1
to C
10
alkyl, where the 3 positions are hydrogen (assuming the bridge position is counted as the one position) and the bridging atom is carbon or silicon which is incorporated into a cyclic group comprising 3, 4, 5, or 6 silicon and/or carbon atoms that make up the cyclic ring.
本发明涉及一种新型的桥式
铪过渡
金属茂
金属催化剂化合物,其具有两个4位被C1到C10烷基取代的
茚基
配体,其中3位是氢(假设桥接位置被计为1位),桥接原子是碳或
硅,其被并入一个包括3、4、5或6个
硅和/或碳原子的环状基团中,这些原子组成环状环。