Patent ID: 9546227
Date: 2017-01-17
CPC Classifications: C08F

Claim:
1. A process for preparing a polydiene, the process comprising the steps of: (i.) providing conjugated diene monomer; (ii.) charging a nickel-based catalyst system to the conjugated diene monomer; and (iii.) charging a modulating Lewis base to the conjugated diene monomer, to thereby polymerize the conjugated diene monomer in the presence of the modulating Lewis base, where said step of charging a modulating Lewis base is separate from said step of charging a nickel-based catalyst, and where said steps of providing conjugated diene monomer, charging a nickel-based catalyst system and charging a Lewis base form a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture,