Polymer Design in the Anionic Polymerisation of Butadiene and Styrene

Abstract

As a result of the improved understanding of the relation between styrenejbutadiene copolymer architecture and the relevant tyre properties there is an increasing demand for tailor-made 'mu1tip1e-Tg' SBR copolymers. In this paper it is shown how the 'semi-steady-state batch process' in combination with a simple kinetic model of the SIB copo1ymerisation can be used to prepare various random SBR block copolymers in which the blocks may differ substantially in styrene and vinyl content.