COMPOSITION FOR FORMING HIGH-TRANSPARENCY POLYPROPYLENE SHEET HAVING RADIATION RESISTANCE, AND PACKAGE COMPRISING THE SAME AND HAVING EXCELLENT RADIATION RESISTANCE AND ELECTRON BEAM STERILIZATION

摘要

PROBLEM TO BE SOLVED: To obtain a radiation-resistant polypropylene composition having proper extrusion moldability, controlling change in properties and hue after irradiation with radiation, having no bad appearance phenomena such as bleed whitening, etc., and a slight smell. SOLUTION: The polypropylene composition is obtained by mixing (A) 100 parts wt. of a polypropylene homopolymer, a propylene-ethylene random copolymer having≤5 wt.% ethylene content or their resin mixture with (B) 0.01-0.125 part wt. of a phosphorus-based antioxidant, (C) 0.01-0.1 part wt. of a hindered amine-based compound and (D) 0.01-0.1 part wt. of a calcium stearate and has 0.5-10g/10 minutes melt flow rate. COPYRIGHT: (C)2007,JPO&INPIT