| 摘要 |
<p>PURPOSE:To efficiently block visible light or ultraviolet rays without damaging a gas barrier property, chemical stability and transparency, by respectively specifying the ratio of the adding amount of a colorant and that of an ultraviolet absorber to an acrylonitrile resin, the wall thickness of a blow molded bottle body and the ratio of the adding amount of the colorant and that of the ultraviolet absorber to the wall thickness. CONSTITUTION:An acrylonitrile resin composition contains a polymer component based on an acrylonitrile polymer, a colorant component consisting of specific three kinds of dyes other than a perinone red dye respectively showing specific pts.wt. ranges per 100pts.wt. of said polymer and a specific pts.wt. of a benzotriazole ultraviolet absorber and, in the colorant component, the other dyes are mixed in ratios of specific pts.wts. per 1pt.wt. of the perinone dye. This composition is used as a molding raw material. In the stretched blow molded bottle body using said raw material, the min., max. and average wall thicknesses are respectively set to specific ranges and, further, the product of the average wall thickness (mm) and the pts.wt. of the colorant component and the product of the average wall thickness and the pts.wt. of the benzotriazole ultraviolet absorber are respectively set to specific ranges.</p> |
