PROPYLENE-BASED POLYMER AND FILM USING THE SAME

摘要

PURPOSE: To provide a propylene-based polymer producing a stretched film excellent in rigidity, heat resistance and stretchability when used for a film, and also provide a stretched film obtained by using of the same. CONSTITUTION: The propylene-based polymer having melt flow rate of 0.1-20 g/10 minutes (g/10 minutes) and a melting point Tm(°C) of 147-159°C measured by the differential scanning calorimeter(DSC) and also having a half width HW(°C) of a melting peak and the melting point Tm(°C) which are measured by the differential scanning calorimeter(DSC) and also satisfy the following relationship: HW< =(188-Tm)/5, and the stretched film using the propylene-based polymer.