| 摘要 |
PURPOSE:To obtain a compsn. which neither emits any odor nor causes bleeding during molding and has excellent transparency by incorporating a crystalline allyltoluene or a crystalline allylxylene polymer to polypropylene. CONSTITUTION:Polypropylene is mixed with a crystalline allyltoluene polymer and/or a crystalline allylxylene polymer obtd. by polymerizing allyltoluene and/or allylxylene with a catalyst consisting of a titanium catalyst component, an org. aluminum compd. and, if necessary, an electron donor to prepare a polypropylene compsn. containing 0.1wt.ppm-2wt.% crystalline allyltoluene polymer and/or crystalline allylxylene polymer. Said electron donor is especially pref. an arom. polybasic carboxylate. |
