POLYPROPYLENE RESIN COMPOSITION, SPIN-DYEING MATERIAL USING THE SAME AS RAW MATERIAL, AND MOLDED BODY USING THE SAME AS RAW MATERIAL

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition good in moldability and excellent in rigidity (flexure elastic modulus), impact resistance and transparency, a spin-dyeing material using the same as a raw material and a molded body using the same as a raw material.SOLUTION: A polypropylene resin composition contains a component A satisfying conditions a1 to a3 of 55 to 85 wt.% and a component B satisfying a condition b of 15 to 45 wt.%, where total A and B is 100 wt.%. a1: the component A contains a propylene homopolymer (A1) of 40 to 90 wt.% and a propylene-α-olefin random copolymer (A2) of 10 to 60 wt.%, where total of (A1) and (A2) is 100 wt.%. a2: MFR (230°C, 2.16 kg load) of whole of the component A is 0.5 to 200 g/10 min. a3: the component A has melting peak temperature (Tm) in a range of 110 to 170°C (DSC method). b: the component B is at least one kind of elastomer.SELECTED DRAWING: None 【課題】成形性が良好で、剛性（曲げ弾性率）、衝撃性及び透明性に優れたポリプロピレン系樹脂組成物、それを原料とする原着材料及びそれを原料とする成形体の提供。【解決手段】条件ａ１〜ａ３を満足する成分Ａ５５〜８５重量％と、条件ｂを満足する成分Ｂ１５〜４５重量％を含有するポリプロピレン系樹脂組成物。（ＡとＢの合計１００重量％）ａ１：成分Ａは、プロピレン単独重合体（Ａ１）４０〜９０重量％と、プロピレン−α−オレフィンランダム共重合体（Ａ２）１０〜６０重量％を含有（（Ａ１）と（Ａ２）の合計を１００重量％とする）、ａ２：成分Ａ全体のＭＦＲ（２３０℃、２．１６ｋｇ荷重）が０．５〜２００ｇ／１０分、ａ３：成分Ａは、１１０〜１７０℃の範囲に融解ピーク温度（Ｔｍ）（ＤＳＣ法）ｂ:成分Ｂは、少なくとも一種のエラストマー。【選択図】なし