申请人:JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
公开号:US11142850B2
公开(公告)日:2021-10-12
A type of easy-to-dye porous modified polyester fibers and preparing method thereof are disclosed. The preparing method is using the modified polyester melt through a porous spinneret with FDY process; wherein the modified polyester is a product of an esterification and successive polycondensation reactions of an evenly mixed terephthalic acid, ethylene glycol, main chain silicated diol, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, and metal oxide doped Sb2O3 powder; wherein the main chain silicated diol is selected from the group consisting of dimethylsiloxane diol, dimethyldiphenyldisiloxane glycol and tetramethyldisiloxane diol. The structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows:
The dye uptake and the K/S value of the prepared easy-to-dye porous modified polyester fiber are high. This invention features a method with ease of application and a product with good dyeing performance and good quality.
本发明公开了一种易于染色的多孔改性聚酯纤维及其制备方法。所述制备方法是使用改性聚酯熔体通过具有FDY工艺的多孔纺丝器;其中,所述改性聚酯是均匀混合的对苯二甲酸、乙二醇、主链硅化二元醇、2,2,3,4,5,5-六甲基-3,4-己二醇和掺杂金属氧化物Sb2O3粉末的酯化和连续聚合反应的产物;其中,所述主链硅化二元醇选自二甲基硅氧烷二醇、二甲基二苯基二硅氧烷甘醇和四甲基二硅氧烷二醇等组中的一种。2,2,3,4,5,5-六甲基-3,4-己二醇的结构式如下所示:所述易于染色的多孔改性聚酯纤维的染料吸收和K/S值均较高。本发明具有易于应用的方法和具有良好染色性能和良好质量的产品的特点。