| 摘要 |
PURPOSE:To obtain an injection molded article excellent in transparency by injection molding a composition which comprises a mixture of PP with a specified uniform dense composition containing 3-methyl-1-butene polymer units and which has a content of the units in a specified range. CONSTITUTION:A uniform dense composition containing 3-methyl-1-butene polymer units, which consists of 3-methyl-1-butene polymer units and 2-5C straight- chain alpha-olefin polymer units and in which the content of the former units is 10-90wt.%, is mixed with PP so as to provide a content of the 3-methyl-1-butene polymer units of 10-10,000ppm by weight. The PP composition thus obtained is injection molded to give a molded article excellent in transparency. |
