| 摘要 |
PROBLEM TO BE SOLVED: To improve thermal aging resistance of a resin molding which is molded from a thermoplastic resin composition obtained by comprising a thermoplastic resin, a filler and a dibasic acid-glycerin ester, and specifying a content of the ester material and a degree of an esterification, thereby decreasing the content of the ester material. SOLUTION: A thermoplastic resin is selected among a polyolefin resin, a polystyrene resin, a polyester resin, a polyamide resin and an engineering plastic. A thermoplastic resin composition comprises adding to 100 pts.wt. of the thermoplastic resin, a dibasic acid-glycerin ester of 0.002-0.8 pts.wt. and a filler of 0.1-300 pts.wt. A degree of esterification of an ester material is to be not more than 50%. As the glycerins which constitute the ester material, a compound represented by the formula (wherein (n) is 0-20) is preferably used. As the dibasic acid which constitutes the ester material is used e.g. adipic acid. A temperature in the esterification is 90-250 deg.C. As the filler is preferable talc.
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