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    • 3. 发明公开
    • UV light stabilized polyester molding composition
    • UV-Licht稳定剂Polyester-Formzusammensetzung
    • EP0953595A1
    • 1999-11-03
    • EP98303247.5
    • 1998-04-27
    • HOECHST CELANESE CORPORATION
    • Mulholland, Bruce M.
    • C08K5/00C08L67/02
    • C08K5/005C08L67/02
    • A UV stabilized thermoplastic polyester molding composition characterized as containing a polyester and a UV light stabilizing system characterized as an effective amount of a hindered amine, a benzotriazole or benzophenone compound, and an antioxidant to achieve acceptable UV exposure results when the composition is exposed in a Xenon arc weatherometer operated according to SAE J1885. The composition and molded parts therefrom exhibit improved color difference, as calculated in CIELab units under illumination "D-65" according to ASTM Standard D-2244, of less than about 2.20 when exposed to 601.6 kJ/m 2 irradiation, and improved surface gloss retention characteristics after exposure.
    • 一种紫外线稳定的热塑性聚酯模塑组合物,其特征在于含有聚酯和UV光稳定体系,其特征在于有效量的受阻胺,苯并三唑或二苯甲酮化合物和抗氧化剂,以在组合物暴露于 氙气弧测试仪按照SAE J1885进行操作。 根据ASTM标准D-2244的照明“D-65”的CIELab装置,当其暴露于601.6kJ / m 2照射时,其组成和模制部件显示出改进的色差,并且改进了 曝光后的表面光泽保留特性。