| 摘要 |
PROBLEM TO BE SOLVED: To provide a block polymer that has a high plasticization efficiency, a rich low-temperature formability, and that has an excellent heat resistance. ! SOLUTION: Provided is a block polymer comprising vinyl polymer segment and polyester segment and in which characterized in that the melting point (Tm) of the block polymer is 50°C or more and 100°C or less and the polyester segment comprises a particular unit and the solubility parameter (SP) value of the polyester segment is 9.40 or more and 9.85 or less, and the weight average molecular weight (Mw) of the vinyl polymer segment is 3000 or more and 30000 or less. ! COPYRIGHT: (C)2015,JPO&INPIT |
