Patent ID: 6255416
Filing Date: 2001-07-03
Classification: C08F

Abstract:
A method of producing a conjugated diene polymer which comprises polymerizing at least one conjugated diene compound with a catalyst consisting essentially of the following components (a) to (d):Component (a): a compound containing a rare earth element of atomic number 57-71 in the Periodic Table or a compound obtained by reacting a compound containing a rare element of atomic number 57-71 with a Lewis base;Component (b): an aluminoxane;Component (c): an organoaluminum compound represented by general formula (1):AlR.sup.1 R.sup.2 R.sup.3 (1)wherein R.sup.1 and R.sup.2 are the same or different and are a hydrocarbon group having a carbon number of 1-10 or a hydrogen atom, and R.sup.3 is a hydrocarbon group having a carbon number of 1-10 provided that R.sup.3 is the same as or different from R.sup.1 or R.sup.2 ; andComponent (d): a reaction product of a metal halide and a Lewis base.