| 摘要 |
PROBLEM TO BE SOLVED: To provide a visually transparent injection-molded product with improved toughness and stress cracking resistance, obtained from a molding composition with improved moldability. SOLUTION: The injection-molded product is manufactured from a copolyester comprising a repeating unit of 90-40 mol% of terephthalic acid as an acid component and 10-60 mol% of one or more additional dibasic acids selected from a group consisting of isophthalic acid and naphthalenedicarboxylic acid, and also comprising 70-100 mol% of a repeating unit of 1,4-cyclohexane dimethanol as a glycol component and having a 0.4-1.1 dL/g inherent viscosity measured in a 60/40 phenol/tetrachloroethane solution containing 0.5 g of the polymer in 100 mL of the solution, and have a diffusion transmittance value of less than 60% measured according to the ASTM D1003 method. COPYRIGHT: (C)2010,JPO&INPIT |
