| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-molecular polymer which has prescribed properties including thermoplastic elastomeric properties and which has a small molecular weight distribution. <P>SOLUTION: Alpha-olefin polymer formed by alpha-olefin polymer catalyst systems includes an isotactic-atactic stereoblock polymer which has isotactic stereosequences or the like having a wide range of structures and having different lengths to provide a prescribed range of properties, for example, high thermoplastic elastomeric properties. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
