| 摘要 |
Provided is a vinyl ether-based star polymer that has arms containing a copolymer of a vinyl ether-based polymer and a oxystyrene-based polymer, and a process for production of the star polymer that is capable of being carried out continuously in a series of steps. The process includes a vinyl ether-based star polymer having arms containing a copolymer of a vinyl ether-based polymer and an oxystyrene-based polymer, and a process for production of the vinyl ether-based star polymer, containing: subjecting a vinyl ether-based monomer to living cationic polymerization in the presence of an initiating species, a Lewis acid that is suitable for cationic polymerization of the vinyl ether-based monomer, and a solvent; then subjecting an oxystyrene-based monomer to living cationic polymerization with a Lewis acid that is suitable for cationic polymerization of the oxystyrene-based monomer added thereto; adding a divinyl compound to introduce a vinyl group to a side chain; and forming a core through intermolecular crosslinking with the vinyl group.
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