| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polypropylene resin composition having excellent calendering processability and excellent moldability of a calender sheet made by calender processing by combining polypropylenes having specific shapes. SOLUTION: This polypropylene resin composition is obtained melting and mixing at least two or more kinds of polypropylenes having 3-40 deg.C difference in melting point measured by a differential scanning calorimeter in polypropylenes comprising <=5 wt.% based on the total of a low molecular component having <=10,000 molecular weight. Preferably a combination of a homopolymer obtained by homopolymerizing propylene with a random copolymer, etc., is used as the polypropylenes. The melting point of a polypropylene having the highest melting point is >=150 deg.C and the content of the polypropylene having the highest melting point in the polypropylenes by the combination is 95-50 wt.%.
|
