| 摘要 |
A composition excellent in transparency, flexibility, rubber elasticity, heat resistance, impact resistance, wearing resistance, etc.; a composition excellent in rigidity and impact resistance and having an excellent balance among blushing resistance, wearing resistance, and heat sealability; and a composition excellent in rubbery properties, heat resistance, wearing resistance, and flexibility. The compositions contain a specific propylene/alpha-olefin copolymer which, when analyzed by 13C-NMR spectroscopy, gives a signal chart in which when the position of the peak present on the highest-magnetic-field side among the signals attributable to the constituent unit CH (methine) derived from a C4-22 alpha-olefin is taken as 34.4 ppm, then the intensity (A) of absorption at about 22.0-20.9 ppm, the intensity (B) of absorption at about 19.0-20.6 ppm, and the intensity (C) of absorption at about 19.0-22. 0 ppm, which is attributable to propylene methyl, satisfy the following relationships (i) and (ii). (A/C)x100= 60 (ii) Also provided are: molded objects made from the compositions; and the alpha-olefin copolymer. ® KIPO & WIPO 2007
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