To provide a polypropylene-based resin composition which can provide foam moldings excellent in balance of foamability and productivity and also excellent in drawdown properties during thermoforming.
The polypropylene-based resin composition comprises (A), (B) and (C). (A): 10-50 wt% of a polyolefin component having branched structure and 5-30 g of melt tension at 230°C; (B): 20-70 wt% of a polypropylene-based resin satisfying (B-1) to (B-4): (B-1) melt tension at 190°C being 0.5-5 g, (B-2) a melt flow rate being 1-10 g/min, (B-3) the ratio of weight average molecular weight to number average molecular weight being 2-4.5, and (B-4) relaxation time (τ) at angular frequency ω=0.1 rad/s being 0.5-2.0 s in the melt viscoelasticity behavior; and (C) 20-70 wt% of a random copolymer polypropylene satisfying (C-1) and (C-2): (C-1) a melt flow rate being 1-8 g/10 min, and (C-2) ethylene unit content being 1-5 wt%.
| JPWO2019004162 | Methacrylic copolymer and solution containing it |
| JPS588741 | ELECTROCONDUCTIVE THERMOPLASTIC ELASTOMER |
KONO TAKAYUKI
KATO KOJI
TANAKA YOSHIKATSU
KISHIDA TOYOJI
