| abstract |
An improved catalyst system and process of producing polyolefins having a controllable broadened molecular weight distribution utilizing transition metal metallocene catalyst systems, wherein at least one of the metallocenes has at least one cyclopentadienyl ring being substituted by at least one optionally substituent having a 2 DEG or 3 DEG carbon atom with which it is covalently bonded to the cyclopentadienyl ring. The method for forming the catalyst system of this present invention can be either by a physical or a chemical mixing process. |