| 摘要 |
<p>It is to provide a narrowly dispersible star polymer having a controlled molecular structure and a method for easily producing such star polymer. The method comprises step (A) wherein arm (I) is formed by binding the anionic end of a polymer having an anionic end to a core and step (B) wherein arm (II) is extended from the core by a living radical polymerization. Examples of the star polymer is specifically exemplified by star polymers characterized by having a structure represented by formula (I-1) or (I-2) (In formula (I-1) or (I-2), B, C 1 and C 2 each independently represents a group composed of a polymer; and m 1 and m 2 each independently represents an integer of 1 or 2, wherein when m 1 or m 2 is 2, both C 1 or both C 2 represent the same group or different groups).</p> |
