POLYPROPYLENE RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition having excellent processability and a good balance between mechanical strength and conductivity. SOLUTION: The polypropylene resin composition comprises (a) 30-65 wt.% crystalline propylene/ethylene block copolymer (a-1) or polymer mixture (a-3) comprising the crystalline propylene/ethylene block copolymer (a-1) and a crystalline propylene homopolymer (a-2), (b-1) 8-25 wt.% ethylene/α-olefin copolymer rubber, (b-2) 1-10 wt.% hydrogenation product of a block copolymer comprising monovinyl-substituted aromatic hydrocarbon compound polymer blocks and conjugated diene polymer blocks, (c)15-25 wt. % (c) inorganic filler, and (d) 1-10 wt. % conductive carbon black having a DBP absorption of 300 to 500 ml/100 g. COPYRIGHT: (C)2005,JPO&NCIPI