Patent ID: 6255508
Filing Date: 2001-07-03
Classification: B01J,C07C,C07F,C08F,Y10S

Abstract:
A catalyst comprising a) at least one bisindenyl compound and b) at least one cocatalyst wherein said bisindenyl compound is of the formula methylenebis(1-Ind)M.sup.1 R.sup.11 R.sup.12, where Ind is an indenyl substituted by at least one C.sub.1 -C.sub.20 -hydrocarbon radical selected from the group consisting of a C.sub.1 -C.sub.20 -alkyl, C.sub.6 -C.sub.20 -aryl, C.sub.6 -C.sub.20 -alkylaryl, C.sub.6 -C.sub.20 -arylalkyl and C.sub.2 -C.sub.20 -alkenyl,M.sup.1 is an element of group IIIb, IVb, Vb or VIb of the Periodic Table of the Elements,R.sup.11 and R.sup.12 are identical or different and are each a hydrogen atom, a halogen atom or a C.sub.1 -C.sub.40 -radical.