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    • 4. 发明公开
    • 방향족 폴리에스테르 및 그 제조법
    • 芳香族聚酯及其制造方法
    • KR1020090029807A
    • 2009-03-23
    • KR1020097000799
    • 2007-07-19
    • 데이진 가부시키가이샤
    • 고노가즈테루기노시타에이지기시노도모유키
    • C08G63/197C08G63/189C08G63/78C08G63/66
    • C08J5/18C08G63/189C08G63/672C08G63/78C08J2367/02
    • Disclosed is an aromatic polyester which enables to obtain a film excellent in heat resistance, hue, mechanical characteristics, dimensional stability and gas barrier properties. Specifically disclosed is an aromatic polyester containing a dicarboxylic acid component and a diol component, wherein (i) the dicarboxylic acid component contains 50-100% by mole of a repeating unit represented by the following formula (A): (A) (wherein R represents an alkylene group having 2-10 carbon atoms); (ii) the intrinsic viscosity measured at 35°C by using a mixed solvent of P-chlorophenol/1,1,2,2-tetrachloroethane (having a weight ratio of 40/60) is 0.4-3.0; (iii) the content of a repeating unit represented by the general formula (D) below is less than 10% by mole; (D) (iv) the concentration of terminal carboxyl groups is not more than 200 eq/ton; and (v) the alkali metal content is not more than 300 ppm. Also specifically disclosed is a method for producing such an aromatic polyester.
    • 公开了一种芳族聚酯,其能够获得耐热性,色调,机械特性,尺寸稳定性和阻气性优异的膜。 具体公开了含有二羧酸成分和二醇成分的芳香族聚酯,其中(i)二羧酸成分含有50〜100摩尔%的下述式(A)表示的重复单元:(A)(其中R 表示具有2-10个碳原子的亚烷基); (ii)通过使用对氯苯酚/ 1,1,2,2-四氯乙烷(重量比为40/60)的混合溶剂在35℃下测定的特性粘度为0.4〜3.0; (ⅲ)由下述通式(D)表示的重复单元的含量小于10摩尔% (D)(iv)末端羧基的浓度不超过200当量/吨; 和(v)碱金属含量不大于300ppm。 还具体公开了这种芳族聚酯的制造方法。