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    MELTBLOWN NONWOVEN FABRIC
    56.
    发明申请
    MELTBLOWN NONWOVEN FABRIC 有权

    公开(公告)号：US20210102321A1

    公开(公告)日：2021-04-08

    申请号：US16782082

    申请日：2020-02-05

    申请人： Taiwan Textile Research Institute

    发明人： Shang-Chih Chou ,  Shao-Yen Chang ,  Chun-Hung Lin ,  Yuan-Pei Liao ,  Yi-Cang Lai

    IPC分类号： D04H1/56 ,  D04H3/16 ,  D04H1/4326 ,  D01F6/66 ,  D01F6/74

    摘要： A meltblown nonwoven fabric is provided. The meltblown nonwoven fabric includes a plurality of meltblown fibers adhered to each other. The material of each of the meltblown fibers includes a polyetherimide and a polyimide, or the material of each of the meltblown fibers includes a polyphenylene sulfide and a polyimide, wherein the glass transition temperature of the polyimide is between 128° C. and 169° C., the 10% thermogravimetric loss temperature of the polyimide is between 490° C. and 534° C., and when the polyimide is dissolved in N-methyl-2-pyrrolidone and the solid content of the polyimide is 30 wt %, the viscosity of the polyimide is between 100 cP and 250 cP.

    Polyetherimide-based fiber, method for manufacturing same, and fiber structure containing same
    58.
    发明授权
    Polyetherimide-based fiber, method for manufacturing same, and fiber structure containing same 有权

    公开(公告)号：US10683589B2

    公开(公告)日：2020-06-16

    申请号：US15468151

    申请日：2017-03-24

    申请人： KURARAY CO., LTD.

    发明人： Tetsuya Okamoto ,  Akihiro Uehata ,  Satoshi Katsuya

    IPC分类号： D01F6/78 ,  D04H1/4326 ,  D04H1/46 ,  D01F1/04 ,  D01F6/74 ,  D01D1/02 ,  D01D5/08

    摘要： Provided is a polyetherimide-based fiber containing a polyetherimide resin and carbon black dispersed in the resin, wherein the content of the carbon black is 0.03 wt % or greater; the carbon black has a primary particle number-mean particle size of from 30 nm to 500 nm; and the fiber has a weight reduction rate of less than 0.5% around the glass transition point (Tg) of the polyetherimide resin, where the weight reduction rate is defined by a following formula (1). Weight reduction rate (%)={[(fiber weight at temperature T1)−(fiber weight at temperature T2)]/(fiber weight at temperature T1)}×100  (1) Where T1 denotes a temperature (Tg−15° C.) that is 15° C. lower than the glass transition point (glass transition temperature) of the polyetherimide resin, and T2 denotes a temperature (Tg+25° C.) that is 25° C. higher than the glass transition point.