| 摘要 |
A sealant containing a block copolymer that contains a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound and a polymer block (b) that contains 1-100 mass% of a structural block (b1) derived from farnesene and 99-0 mass% of a structural block (b2) derived from a conjugated diene other than farnesene, the block copolymer having a mass ratio [(a)/(b)] of polymer block (a) and polymer block (b) of 5/95-45/55, has excellent moldability, flexibility, and adhesiveness as well as excellent sound insulation and damping (vibration damping characteristics) in the high-frequency range near 4000 Hz even at high temperature. |
