Takiron Co., Ltd.

Hirofumi Takase

Yoichiro Makimura

An additive-containing resin molded article which suffers from little exudation or vaporization of an additive and sustains the effect of the additive for a long period of time and in which reductions in various physical properties due to molecular weight reduction of a polyester resin are suppressed, and a process for producing the same are provided. When a polyester resin is heat-melted and molded into a prescribed shape by means of an extruder etc., a bi- or multi-functional additive having at least one of a functional hydroxyl group, carboxyl group, amino group, and ester bond is added and allowed to react with the polymer molecules of the molten polyester resin to obtain an additive-containing resin molded article in which the additive is bonded to the polymer molecules through an ester linkage or an amide linkage.

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Osaka, Japan

Hirofumi Takase