Process for the preparation of polymers of conjugated dienes and optionally monoalkenyl aromatic hydrocarbons.

摘要

Process for the preparation of polymers of conjugated dienes and optionally monoalkenyl aromatic hydrocarbons by polymerization of conjugated diene and optionally monoalkenyl aromatic hydrocarbon monomers in the presence of a hydrocarbon diluent, a hydrocarbyl alkali metal compound and a Lewis base having the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="25" wi="40" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein
<UnorderedLists id="ula01" listStyle="none"><ListItem>R. is an alkyl group having 2-18 carbon atoms;</ListItem><ListItem>R<Sub>2</Sub> and R<Sub>3</Sub> are hyorogen or an alkyl group having 1-4 carbon atoms;</ListItem><ListItem>R. is hydrogen or an alkyl group having 1-6 carbon atoms and</ListItem><ListItem>R<Sub>5</Sub> is an alkyl group having 1-18 carbon atoms.</ListItem></UnorderedLists>