| 摘要 |
PROBLEM TO BE SOLVED: To obtain a propylene polymer excellent in moldability and capable of being obtained with a single tank reactor in a high yield. SOLUTION: This polypropylene polymer has the following physical properties: (1) a melt flow rate(MFR) of 0.1-1000g/10min measured under a load of 2.16kg at 230 deg.C; (2) a dissolution amount of <=5.0wt.% in hexane at 23 deg.C; (3) an isotactic pentad fraction (mmmm) of >=92.0% measured with<13> C-NMR; and (4) a melt flow rate (MFR: g/10min) measured under a load of 2.16kg at 230 deg.C and an ME measured with an orifice diameter of 1.0mm at 190 deg.C satisfy the inequality: (ME) >=-0.26×log(MFR)+1.55.
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