Patent ID: 6084043
Filing Date: 2000-07-04
Classification: C08F,Y10S

Abstract:
A catalyst component for the polymerization of alpha-olefins, comprising a compound represented by the following general formula: ##STR8## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represent hydrogen, a halogen, a hydrocarbon radical having 1 to 10 carbon atoms, or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, provided that R.sup.1 is an aryl radical of 6 to 10 carbon atoms;n is an integer of 4 to 7;Q is a divalent group which combines the two 5-membered rings, and represents a hydrocarbon radical having 1 to 20 carbon atoms, a silylene or oligosilylene group, a silylene or oligosilylene group containing a hydrocarbon radical having 1 to 20 carbon atoms, a germylene group, or a germylene group containing a hydrocarbon radical having 1 to 20 carbon atoms;X and Y each independently represent hydrogen, a halogen, a hydrocarbon radical having 1 to 20 carbon atoms, or an oxygen- or nitrogen-containing hydrocarbon radical having 1 to 20 carbon atoms; andM represents a tetravalent transition metal selected from the group IVB in the Periodic Table.