| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymer additive to be added to a molding material comprising a polyethylene terephthalate and its copolyester for reducing an amount of acetaldehyde formed during processing of the molding material.SOLUTION: A polyester compatible coloring agent, a hindered phenol antioxidant, and a phosphorous acid antioxidant are added as additives to a thermoplastic resin comprising polyethylene terephthalates or their copolyesters of an aliphatic hydroxyl compound including at least two hydroxy groups and an aliphatic-cyclic aliphatic compound. |
