| 摘要 |
PURPOSE: A polyester resin is provided to ensure excellent color, chemical resistance, shrink resistance and tear resistance, low injection temperature, and low generation rate of acetaldehyde, thereby being useful in the manufacture of a sheet or bottle. CONSTITUTION: A polyester resin comprises an acid component including a terephthalic acid component of at least 80 mol%/acid; and a diol component including ethylene glycol of 70-99.9 mol%/acid and propylene glycol of 0.1-30 mol%/acid. The diol component comprises ethylene glycol of 80-96 mol%/acid and diol component 1-5 mol%/acid selected from the group consisting of diethylene glycol, triethylene glycol, 1,3-propanediol, butanediol, pentanediol, hexanediol, cyclohexanedimethanol, and cyclobutanediol.
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