| abstract |
(57) [Problem] To provide a propylene-ethylene copolymer fiber having extremely high heat resistance and flexibility, and a fiber molded article using the same. SOLUTION: This is a propylene-ethylene copolymer composed of 0.01 to 15 mol% of ethylene units and 99.99 to 85 mol of propylene units, having a specific chain structure according to a nuclear magnetic resonance spectrum, and having a weight average molecular weight (Mw). Is 50,000 to 1,500,000, and the ratio (Mw / Mn) of the number average molecular weight (Mn) to the weight average molecular weight (Mw) is 1.2 to 3.8. A fiber molded using an ethylene copolymer as at least one raw material, and a fiber molded article using the same. |