Patent ID: 6048950
Filing Date: 2000-04-11
Classification: C08F,Y10S

Abstract:
A catalyst comprising the combination of components which comprises:(a) compound of the formula I ##STR7## in which M.sup.1 is a metal of Group IVb of the Periodic Table,R.sup.1 is a halogen atom,R.sup.2 is a halogen atom,R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independent of one another are hydrogen atoms or C.sub.1 -C.sub.10 -alkyl groups and at least one air of adjacent radicals R.sup.3, R.sup.4, R.sup.5 and R.sup.6 on each cyclopentadienyl ring form an aromatic ring with the carbon atoms to which they are bonded,R.sup.7 is --M.sup.2 (R.sup.9)(R.sup.10)--M.sup.2 (R.sup.9)(R.sup.10)--in whichR.sup.9 is a C.sub.1 -C.sub.10 -alkyl group andR.sup.10 is a C.sub.1 -C.sub.10 -alkyl group andM.sup.2 is silicon, germanium or tin; and(b) an aluminoxane.