| 摘要 |
<p>A shape-memorizing block copolymer composition characterized by comprising a block copolymer component (I) composed of (A) at least two polymer segments (polymer segments A) having a glass transition temperature of 60 DEG C to 250 DEG C and (B) at least one amorphous polymer segment (polymer segment B) having a glass transition temperature which is not lower than -20 DEG C but lower than the lowest glass transition temperature within those of said polymer segments A with a difference not less than 20 DEG C, the proportion of whole of said polymer segments A to whole of said polymer segment B being in the range of (10/90) to (70/30) by weight; and a rubbery polymer component (II) having a glass transition temperature lower than -20 DEG C, the proportion of said component (I) to said component (II) being in the range of (50/50) to (98/2) by weight.</p> |
