| 摘要 |
PROBLEM TO BE SOLVED: To provide a decorative sheet which does not evolve toxic, corrosive hydrogen chloride gas during combustion and possesses excellent brushing resistance, impact resistance, transparency, and printing properties. SOLUTION: This decorative sheet is prepd. using a propylene block copolymer comprising: (A) a propylene/α-olefin random copolymer component having a propylene content of not less than 90 wt.%; and (B) a propylene/α-olefin random copolymer component having a propylene content of 55 to 90 wt.%, wherein the intrinsic viscosity of the propylene/α-olefin random copolymer component (B) is 1.3 to 3.5 dl/g, the intrinsic viscosity ratio of this intrinsic viscosity to that of the propylene/α-olefin random copolymer component (A) is 0.5 to 1.3, and the product of the wt. ratio., of the propylene/α-olefin copolymer segment (A) to the wt. of the propylene/α-olefin copolymer segment (B), by the intrinsic viscosity ratio is in the range of 1.0 to 4.5. |
