| 摘要 |
The invention relates to an organolithium initiator for anionic polymerisations, the initiator having one carbon-lithium bond and at least one heteroatom-lithium bond and secondary nitrogen or oxygen being suitable as the heteroatom, a process for the preparation of the initiator in which an organolithium compound of the general formula R<1>-Li is reacted with a ring- or side chain-substituted, vinylaromatic compound, R<1> being an alkyl or aryl radical, the substituent of the vinylaromatic compound carrying at least one hydrogen atom bonded to a heteroatom and secondary nitrogen or oxygen atoms being possible as heteroatoms, and the use of the initiator for the preparation of polymers of vinylaromatic compounds, 1,3-dienes or mixtures of vinylaromatic compounds and 1,3-dienes by anionic polymerisation.
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