| 摘要 |
A coupled linear polymer is prepared by reacting a living alkali metal-terminated polymer with a coupling agent. A coupled linear polymer is prepared by reacting a living alkali metal-terminated polymer with a coupling agent. The living alkali metal-terminated polymer has the formula P-M, in which M is an alkali metal, P is a polymeric carbanion of one or more conjugated dienes having 4-12C atoms, and one or more monovinylarenes having 8-18C atoms. The coupling agent has the formula (I). R1 and R3 = aliphatic alkyl and alkenyl, H, and R2 = alkylene, alkenylene, divalent cycloalkylene, divalent arenyl, or 1-17C divalent hydrocarbyl containing ether group.
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