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    • 3. 发明公开
    • POLYTRIMETHYLENE TEREPHTHALATE COMPOSITION, POLYESTER FIBERS, AND METHOD FOR PRODUCING SAME
    • 聚对苯二甲酸乙二醇酯组合物,聚酯纤维及其制造方法
    • EP3249012A1
    • 2017-11-29
    • EP16740035.7
    • 2016-01-13
    • Teijin Limited
    • TSUKAMOTO, Ryoji
    • C08L67/02C08G63/183C08K3/22D01F6/62
    • C08K3/22C08G63/183C08J3/2053C08J2367/02C08K3/02C08K5/521C08K2003/026C08K2003/2241C08K2201/005C08L67/02D01D1/02D01D5/08D01F1/04D01F6/62D01F8/14D10B2331/04D10B2501/04
    • A polytrimethylene terephthalate composition including a polyester having a trimethylene terephthalate unit as a main repeating unit, which satisfies all the following requirements : (a) the intrinsic viscosity is 0.50 to 1.60 dL/g; (b) titanium dioxide whose weight distribution of particles having a particle size of more than 1.0 µm is 5.0% by weight or less is contained in an amount of 0.05 to 3.0% by weight; (c) the crystallization exothermic peak top temperature is 165°C or more; and (d) the half-width of the crystallization exothermic peak is 20°C or less. In addition, the invention further encompasses a method for producing a polytrimethylene terephthalate composition using titanium dioxide that has been subjected to a wet-grinding treatment, and also a fiber obtained from the composition. The invention provides a polytrimethylene terephthalate composition, which stabilizes the process in the production of a fiber having small single-fiber fineness by melt-spinning, and is suitable for obtaining a fiber with reduced fluffing.
    • 一种聚对苯二甲酸丙二醇酯组合物,其特征在于,含有具有对苯二甲酸丙二醇酯单元作为主要重复单元的聚酯,其满足以下所有条件:(a)特性粘度为0.50-1.60dL / g; (b)含有0.05〜3.0重量%的粒径超过1.0μm的粒子的重量分布为5.0重量%以下的二氧化钛; (c)结晶放热峰顶温度为165℃或更高; (d)结晶放热峰的半值宽度为20℃以下。 另外,本发明还包括使用经过湿磨处理的二氧化钛制造聚对苯二甲酸丙二醇酯组合物的方法,以及由该组合物得到的纤维。 本发明提供一种聚对苯二甲酸丙二醇酯组合物,其通过熔融纺丝使单纤维纤度小的纤维的制造工序稳定化,适​​于得到起毛少的纤维。