| 摘要 |
<p>The invention relates to mixtures containing linear block copolymers consisting of vinyl aromatic monomers and dienes, of structure (I) S1-B1-S2 and (II) S3-B2-S4, wherein S1 represents a block of vinyl aromatic monomers having a number average molar mass Mn of between 40,000 and 100,000 g/mol; S2, S3 and S4 respectively represent blocks of vinyl aromatic monomers having a number average molar mass Mn of between 5,000 and 20,000 g/mol; and B1 and B2 respectively represent blocks of dienes or copolymer blocks of dienes and vinyl aromatic monomers having a number average molar mass Mn of between 15,000 and 40,000 g/mol. The ratio of the block copolymers (I)/(II) is between 0.6 and 2.</p> |
