Patent ID: 6207773
Filing Date: 2001-03-27
Classification: C07F,C08F,Y10S

Abstract:
A metallocene complex which is represented by the following formula: ##STR16##wherein:M is a Group IVB transition metal with an oxidation state of +4;Z is a Group IVA element;R.sup.1 is a divalent unsubstituted or substituted C.sub.3-6 alkanediyl group which forms a ring system with Z, wherein the substituent is selected from the group consisting of C.sub.1-20 alkyl, C.sub.1-20 alkenyl, C.sub.6-20 aryl, C.sub.7-20 alkylaryl, and C.sub.7-20 arylalkyl;R.sup.2 can be the same or different and is H, a C.sub.1-20 linear, branched or cyclic hydrocarbyl group, or a silyl group, or two adjacent R.sup.2 groups combine together to form with the carbon atoms to which they are attached a C.sub.4-6 fused ring system;X is independently an anionic ligand with a -1 valence;Y is a Group VA element or a Group VIA element;q is 1 when Y is a Group VA element, and q is 0 when Y is a Group VIA element; andR.sup.3 is H, or a C.sub.1-20 linear, branched or cyclic hydrocarbyl group.