POLYPROPYLENE FOR BIAXIALLY ORIENTED FILM AND BIAXIALLY ORIENTED FILM

摘要

PURPOSE: To obtain a polypropylene which can give a film having good orientability and can give a biaxially oriented film excellent in rigidity and dimensional stability. ;CONSTITUTION: This polypropylene is one satisfying the following requirements: (1) the content of xylene solubles (CXS) at 20°C is 3.5wt.%, (2) the relationship between the CXS and the content (wt.%) of the xylene insolubles (XIS) at 105°C is expressed as follows: XIS≤70.00-3.64 CXS, and (3) the melt flow rate(MFR) at 230°C is 0.5-10.0g/10min.;COPYRIGHT: (C)1995,JPO