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    • 1. 发明申请
    • Flame-Retardant Polyester and Process for Producing the Same
    • 阻燃聚酯及其制备方法
    • US20080300349A1
    • 2008-12-04
    • US11720157
    • 2005-11-22
    • Masaki FuchikamiShoji KoketsuTetsumori AtsuchiMaki Sato
    • Masaki FuchikamiShoji KoketsuTetsumori AtsuchiMaki Sato
    • C08K5/5313
    • C08G63/863C08G63/6926C08K5/5313C08L67/02
    • To easily obtain a polyester having excellent mechanical properties, a satisfactory hue, and a high degree of flame retardancy. [MEANS FOR SOLVING PROBLEMS] The flame-retardant polyester is a polyester comprising ethylene terephthalate units as the main structural units and a phosphorus compound copolymerized or incorporated therein or is a resin composition comprising polyesters including that polyester. The flame-retardant polyester is characterized in that a polycarboxylic acid and/or polyol having three or more functional groups capable of forming an ester bond is contained in the polyester in a total amount of 0.05-2.00 mol (per 200 mol of the sum of the dicarboxylic acid ingredient and the diol ingredient), that a specific phosphorus compound having a functional group capable of forming an ester bond is contained in the polyester in an amount of 5,000-50,000 ppm of the polyester in terms of phosphorus amount, and that the polyester pellet obtained has a b value of −5 to 20, an L value of 35 or larger, and a melt viscosity at 280° C. of 1,000-20,000 dPa·s.
    • 为了容易地获得具有优异的机械性能,令人满意的色调和高阻燃性的聚酯。 作为解决问题的手段阻燃性聚酯是以对苯二甲酸乙二醇酯单元作为主要结构单元的聚酯和共聚或并入其中的磷化合物,或包含该聚酯的聚酯的树脂组合物。 阻燃聚酯的特征在于,聚酯中含有三个或更多个能形成酯键的官能团的多元羧酸和/或多元醇,其总量为0.05-2.00mol(相对于 二羧酸成分和二醇成分),聚酯中含有能够形成酯键的官能团的特定磷化合物以磷量计为5,000〜5000ppm的聚酯, 获得的聚酯粒料的ab值为-5〜20,L值为35以上,280℃下的熔融粘度为1000〜20,000dPa.s。