| 摘要 |
PROBLEM TO BE SOLVED: To obtain a formed article excellent in rigidity, shock resistance, appearance, degree of forming shrinkage and whitening resistance on bending and having extremely excellent application properties as a coating material. SOLUTION: A formed article prepared using a propylene block copolymer composition. The propylene block copolymer composition has the product of the ratio of a copolymer component to a homopolymer component in viscosities and the ratio of the homopolymer component to the copolymer component in weights (([η]RC/[η]PP)×(WPP/WRC)) of 0.2-2.0, wherein [η]PP and [η]RC are the intrinsic viscosities of the homopolymer component and the copolymer component, respectively, and WPP and WRC are the weights of the homopolymer component and the copolymer component, respectively. The propylene block copolymer composition also has the ratio of the melt flow of the homopolymer component to that of the copolymer component of 0.3-4 and the intrinsic viscosity of the copolymer component [η]RC of <=6.5.
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