| 摘要 |
PURPOSE: A coupling polymer useful as shoe soles having a good transparent property and durability is prepared by using a coupling agent having less than three of coupling number. CONSTITUTION: A polymeric carboanion(formula of P-M; M is alkali metal; P is one or more conjugated diene having 4-12 carbon atom or one or more conjugated diene having C4-C12 carbon atom and a living alkali metal terminated polymer of one or more monovinylarene polymeric carboanion having C8-C18 carbon atom) are reacted with a coupling agent(formula 1; R and R3 are a group independently selected from aliphatic alkyl, alkenyl and halogen; R2 is alkylene, alkenylene, 2 valent of cycloalkylene, 2 valent of arenyl, C1-C17 2 valent of hydrocarbyl having ether or ketone group) to give the coupling polymer.
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