| 摘要 |
<p>A catalyst having a high polymerization activity and capable of providing olefin polymers having a wide molecular weight distribution, which comprises (a) a metallocene compound (a-1) or a titanium catalyst component (a-2) comprising magnesium, titanium, and a halogen as indispensable components, (b) a group 8-10 transition metal compound represented by general formula (I'), and a cocatalyst, wherein M represents Pd, Ni, or Pt; X?1 and X2¿ represent N or P; R?1 and R2¿ represent H or a hydrocarbon radical; R?4 and R5¿ represent a halogen or a hydrocarbon radical; and R?6 and R7¿ represent H or a hydrocarbon radical. An olefin polymer composition which has excellent rigidity and impact resistance is prepared by using a catalyst containing the above transition metal compound (b), and comprises a noncrystalline olefin polymer having an intrinsic viscosity, a glass transition temperature, and a density in respective particular ranges and a conventional olefin polymer other than the above olefin polymer. Another olefin polymer composition which has excellent mechanical properties and heat resistance is prepared by using a catalyst containing the above transition metal compound (b), and comprises a crystalline olefin polymer having an intrinsic viscosity, a melting point, and a density in respective particular ranges and a conventional olefin polymer other than the above olefin polymer.</p> |
