| abstract |
A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a) a lanthanide compound, (b) an alkylating agent, and (c) a halogen-containing compound, and maintaining a non-ideal flow pattern within the continuous reactor so that 10% of the reagents entering the reactor at a reference time t 0 are still present within the continuous reactor at a time t 0 +xt rt , where t rt is the residence time corresponding to ideal flow within the continuous reactor and x is a numeral greater than 1.5. |