| 摘要 |
PURPOSE: Provided is a syndiotactic polypropylene, which has high syndiotactic index, crystallinity and the racemic dyad(r) ratio. CONSTITUTION: The syndiotactic polypropylene has a syndiotactic index of 0.83 or more. Preferably, the syndiotactic index is greater than or equal to 0.89. More preferably, the syndiotactic index is a value of about 0.75 to 0.95, more particularly a value of 0.757 to 0.88. The syndiotactic polypropylene is prepared by using stereorigid metallocene catalysts.
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