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Quantitation, additives Coupling agents

Substituted farans have been shown to be effective end-quenchers in both the TiCU- and BCls-initiated polymerization of PIBs resulting in quantitative functionalization as determined by NMR. In addition, the allylic cation formed upon functionalization was found to be an effective initiating species for the polymerization of methyl vinyl ether to form the corresponding PIB-I7-PVE by sequential monomer addition, and the concept was extended to the preparation of three-armed star block polymers. Other bis-furanyl derivatives have also been used as coupling agents for the preparation of telechelic PIBs. °... [Pg.406]

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See also in sourсe #XX -- [ Pg.644 ]



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Coupling agents

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