PROPYLENE BASED RESIN COMPOSITION AND USE THEREOF

摘要

Means for solving the problems;The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below:
1 to 90 wt % of an isotactic polypropylene (A1);9 to 98 wt % of a propylene/ethylene/α-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 α-olefin-derived structural units (a1);1 to 80 wt % of a styrene-based elastomer (C1); and0 to 70 wt % of an ethylene/α-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.

主权项

1. A thermoplastic resin composition (X2) comprising (A2), (B2), (C2), (D2), and (E2) below:
5 to 95 wt % of a propylene/α-olefin copolymer (B2) whose melting point is not higher than 100° C. or not observed when measured with a differential scanning calorimeter (DSC); 5 to 95 wt % of a styrene-based elastomer (C2); 0 to 90 wt % of an isotactic polypropylene (A2); 0 to 70 wt % of an ethylene/α-olefin copolymer (D2) whose density is in the range of 0.850 to 0.910 g/cm3, wherein the total of (A2), (B2), (C2), and (D2) is 100 wt %; and a softener (E2) in an amount of 0 to 400 parts by weight relative to 100 parts by weight of the total of (A2), (B2), (C2), and (D2).