| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyester resin composition which does not cause the problem of drawdown and crystallization when being performed with a direct blow molding, and also excels in thermal stability, and can obtain a direct blow-molded article excellent in color tone and transparency in a favorable productivity. <P>SOLUTION: The polyester resin composition is characterized as follows. The polyester resin composition includes: an acid component in which 50-95 mol% thereof is terephthalic acid, and 2-20 mol% thereof is isophthalic acid; and a glycol component in which at least 80 mol% thereof is ethylene glycol, includes 0.1-1.0 pt.mass of tetrakis [methylene 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane, and includes 5×10<SP POS="POST">-5</SP>mole-3.0×10<SP POS="POST">-4</SP>mole of a germanium compound based on 1 mole of the acid component of the polyester resin, wherein the intrinsic viscosity (IV) is 0.8-1.5, and the swell ratio (SW) is 1.2-1.4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
