| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyester resin-based molded article having high crystallinity, good mechanical strength, excellent gas barrier property, superior thermal resistance and high transparency, and also to obtain a polyethyleneterephthalate-based resin composition enabling the easy production of the molded article having various shapes. SOLUTION: The polyethyleneterephthalate-based resin composition comprising 0.005 to 5 pts.wt. of a carboxylic acid group-containing compound and a metal salt thereof or 0.1 to 10 pts.wt. of a polyamide as a crystalline nucleating agent, and 0.05 to 5 pts.wt. of a polycarbodiimide or 1 to 50 pts.wt. of a polyethylenenaphthalate as a polyester reactive compound, based on 100 pts.wt. of the polyethyleneterephthalate-based resin. |
