| 摘要 |
<p>Block copolymer composition containing » 30 % by weight of an aromatic vinyl compound-conjugated diene block copolymer having an aromatic vinyl compound content of 10-90 % by weight and of formula (A-B)nX, in which "A" is the aromatic vinyl compound block, "B" the conjugated diene block, n an integer » 5 and X a coupling agent residue, which block copolymer yields a 25 % by weight solution thereof in toluene having a viscosity at 25°C of 50-1000 cP.</p> |
