Thermoplastic resin composition, agent for improving thermal aging resistance of thermoplastic resin, and resin molded article obtained therefrom
申请人:Ajinomoto Co., Inc.
公开号:EP0908491A2
公开(公告)日:1999-04-14
A thermoplastic resin composition comprising a thermoplastic resin and at least one of a polyglycerin derivative in which at least one hydroxyl group of a polyglycerin molecule is esterified with a fatty acid, an N-acyl basic amino acid and a dibasic acid erythritol ester, and :
i) in using said polyglycerin derivative, further comprising an antioxidant, or further comprising an antioxidant and a filler;
ii) in using said N-acyl basic amino acid, further comprising a filler and wherein said thermoplastic resin contains at least one type selected from the group consisting of a polyolefin resin, a polystyrene resin, a polyester resin, a polyamide resin and an engineering plastic; and
iii) in using said dibasic acid erythritol ester, further comprising a filler, and wherein said thermoplastic resin contains at least one type selected from the group consisting of a polyolefin resin, a polystyrene resin, a polyester resin, a polyamide resin and an engineering plastic, and the amount of said dibasic acid erythritol ester is less than 1 part by weight per 100 parts by weight of the thermoplastic resin, and said ester includes an ester having a degree of esterification of not more than 50% is provided.
Thus obtained thermoplastic resin composition is excellent in improving a thermal aging resistance for the resin when a thermoplastic resin is molded, and the additives for the thermoplastic resin composition are also provided.
一种热塑性树脂组合物,包括热塑性树脂和聚甘油衍生物中的至少一种,其中聚甘油分子的至少一个羟基与脂肪酸、N-酰基碱性氨基酸和二元酸赤藓醇酯酯化,以及:
i) 在使用所述聚甘油衍生物时,进一步包含抗氧化剂,或进一步包含抗氧化剂和填充剂;
ii) 在使用所述 N-酰基碱性氨基酸时,进一步包含一种填料,其中所述热塑性树脂包含至少一种选自聚烯烃树脂、聚苯乙烯树脂、聚酯树脂、聚酰胺树脂和工程塑料的类型;以及
iii) 在使用所述二盐基酸赤藓糖醇酯时,进一步包括填料,其中所述热塑性树脂包含至少一种选自聚烯烃树脂、聚苯乙烯树脂、聚酯树脂、聚酰胺树脂和工程塑料组成的组的类型,且所述二盐基酸赤藓糖醇酯的用量少于每 100 份热塑性树脂重量的 1 份,且所述酯包括酯化度不超过 50%的酯。
由此获得的热塑性树脂组合物在热塑性树脂模塑时能很好地改善树脂的耐热老化性,同时还提供了热塑性树脂组合物的添加剂。