Patent ID: 6218485
Filing Date: 2001-04-17
Classification: C08F

Abstract:
A process for producing a monodisperse polymer which has a number-average molecular weight from 1,000 to 100,000 and a molecular weight distribution Mw (weight-average molecular weight)/Mn (number-average molecular weight)=1.00 through 1.50, comprising homopolymerizing or random copolymerizing an anionic polymerizable compound by living anionic polymerization using an organic alkali metal and/or an alkali metal as a polymerization initiator, wherein a target molecular weight is obtained by adding the compound divided into multiple steps, and wherein in a first step the polymerization is allowed to continue to completion without adding additional amounts of the compound subsequent to an initial addition of the compound at a beginning of the polymerization in the first step.