| abstract |
The subject of the present invention is to provide a biaxially-stretched polypropylene sheet having excellent transparency, rigidity, heat resistance, uniform extensibility, and low-temperature impact resistance, and further having easy thermoformability, and thermoforming using the same. Secondary molded articles (containers, etc.), and polypropylene compositions suitable for producing the sheet. The solution to the problem is a polypropylene composition characterized by containing: a propylene polymer containing ethylene, having an ethylene content of less than 1% by mass, a molecular weight distribution (Mw / Mn) of 6 to 20, and two at 25 ° C. The toluene-insoluble content exceeds 96.5 mass% and is below 99.5% by mass, and the stereoregularity (mmmm) of the xylene-insoluble content is 97.5 to 99.5%; and a crystallization nucleating agent, which is relative to the aforementioned ethylene-containing propylene polymer 100 Mass part, less than 0.18 mass part. The melt flow rate of the polypropylene composition is 1 to 15 g / 10 minutes. |