abstract |
A polypropylene is disclosed which is a linear polypropylene having a ratio of a Z-average molecular weight Mz to a weight-average molecular weight Mw, Mz/Mw, determined by gel permeation chromatography of 4.1 or more, a swell ratio of from 1.4 to 1.8, and an activation energy of flow of from 48 to 105 kJ/(mol·K). |