| 摘要 |
PURPOSE:To provide a composition having excellent surface gloss, and consisting of a partially crosslinked resin containing a crystalline polyolefin, an amorphous ethylene-alpha-olefin copolymer, and a low-crystalline propylene-alpha-olefin copolymer. CONSTITUTION:The objective composition consists of a partially crosslinked resin composed of (A) a crystalline polyolefin composed mainly of >=3C alpha-olefin, (B) an amorphous ethylene-alpha-olefin copolymer and (C) a low-crystalline copolymer of propylene and a >=4C alpha-olefin. The composition can be prepared by compounding the components A, B and C, adding an organic peroxide and a radically polymerizable monomer having >=2 polymerizable groups to the mixture, and carrying out the dynamic thermal treatment, i.e. kneading the composition in molten state under the condition to decompose the component C. The kneading is preferably carried out in a closed vessel.
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