POLYPROPYLENE-BASED RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a polypropylene-based resin composition having both softness and heat resistance, excellent in thermal moldability and to provide a gasket using the composition. SOLUTION: This composition comprises (A) 100 pts.wt. of a propylene based copolymer and/or a propylene-based copolymer containing <=4wt.% of another olefin unit having 20-60% pendant fraction rrrr/(1mmmm)×100 by isotropic carbon nuclear magnetic resonance (<13> -NMR), >=150 deg.C melt peak temperature by scanning differential thermal analyzer and <=100J/g melt enthalpy by the same analyzer, (B) 10-700 pts.wt. of an elastomer copolymer and (C) 10-700 pts.wt. of a process oil. The objective gasket is obtained by using the a polypropylene-based resin composition.