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    LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF
    1.
    发明申请
    LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF 审中-公开

    公开(公告)号：US20190177880A1

    公开(公告)日：2019-06-13

    申请号：US16275399

    申请日：2019-02-14

    Applicant: TORAY INDUSTRIES, INC.

    Inventor： Yoshitsugu FUNATSU ,  Masato MASUDA ,  Chieko KAWAMATA

    IPC: D01F6/62 ,  D01F6/84

    Abstract: Provided is a liquid crystal polyester fiber having high strength, high elastic modulus, high abrasion resistance, excellent processability, and little thermal deformation at high temperature, and also provided is a production method thereof. A liquid crystal polyester fiber, characterized in that the peak half-value width of the endothermic peak (Tm1) observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min is 15° C. or higher, the polystyrene-converted weight-average molecular weight is between 250,000 and 2,000,000 inclusive, the peak temperature of the loss tangent (tan δ) is between 100° C. and 200° C. inclusive, and the peak value of the loss tangent (tan δ) is between 0.060 and 0.090 inclusive. A mesh fabric comprising the liquid crystal polyester fiber. A production method for melt liquid crystal polyester fiber, characterized in that liquid crystal polyester fiber obtained by melt-spinning is subject to solid-phase polymerization, and subsequently heat treated at a stretch ratio of at least 0.1% and under 3.0% at a temperature at least 50° C. higher than the endothermic peak temperature (Tm1) as observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min.

    LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF
    2.
    发明申请
    LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF 审中-公开
    液晶聚酯纤维及其制备方法

    公开(公告)号：US20160340804A1

    公开(公告)日：2016-11-24

    申请号：US15113902

    申请日：2015-01-21

    Applicant: TORAY INDUSTRIES, INC.

    Inventor： Yoshitsugu FUNATSU ,  Masato MASUDA ,  Chieko KAWAMATA

    IPC: D01F6/62 ,  D01F6/84

    CPC classification number: D01F6/62 ,  D01D5/08 ,  D01F6/84 ,  D10B2331/04

    Abstract: Provided is a liquid crystal polyester fiber having high strength, high elastic modulus, high abrasion resistance, excellent processability, and little thermal deformation at high temperature, and also provided is a production method thereof. A liquid crystal polyester fiber, characterized in that the peak half-value width of the endothermic peak (Tm1) observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min is 15° C. or higher, the polystyrene-converted weight-average molecular weight is between 250,000 and 2,000,000 inclusive, the peak temperature of the loss tangent (tan δ) is between 100° C. and 200° C. inclusive, and the peak value of the loss tangent (tan δ) is between 0.060 and 0.090 inclusive. A mesh fabric comprising the liquid crystal polyester fiber. A production method for melt liquid crystal polyester fiber, characterized in that liquid crystal polyester fiber obtained by melt-spinning is subject to solid-phase polymerization, and subsequently heat treated at a stretch ratio of at least 0.1% and under 3.0% at a temperature at least 50° C. higher than the endothermic peak temperature (Tm1) as observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min.

    Abstract translation: 本发明提供高强度，高弹性模量，高耐磨性，优异的加工性，高温下的热变形少的液晶聚酯纤维。 一种液晶聚酯纤维，其特征在于，在从50℃开始并且升高20℃/分钟的升高的温度条件下通过差示量热法测量时观察到的吸热峰（Tm1）的峰值半峰值宽度为15℃ 以上，聚苯乙烯换算的重均分子量为25万以上且2,000,000以下，损耗角正切的峰值温度（tanδ）为100℃以上且200℃以下，峰值为 损耗角正切（tanδ）在0.060和0.090之间。 一种包含液晶聚酯纤维的网状织物。 熔融液晶聚酯纤维的制造方法，其特征在于，将通过熔融纺丝得到的液晶聚酯纤维进行固相聚合，随后在温度为0.1％以上且3.0％以下的拉伸倍率进行热处理 比起在50℃开始升高的温度条件下通过差示量热法测定的吸热峰温度（Tm1）高出至少50℃，并且增加20℃/分钟。

    COMPOSITE SPINNERET, MULTICOMPONENT FIBER, AND METHOD OF PRODUCING MULTICOMPONENT FIBER
    4.
    发明申请
    COMPOSITE SPINNERET, MULTICOMPONENT FIBER, AND METHOD OF PRODUCING MULTICOMPONENT FIBER 审中-公开
    复合纺丝，多纤维纤维和生产多纤维纤维的方法

    公开(公告)号：US20150329991A1

    公开(公告)日：2015-11-19

    申请号：US14443706

    申请日：2013-11-15

    Applicant: TORAY INDUSTRIES, INC.

    Inventor： Masato MASUDA ,  Masaomi MIYASHITA ,  Joji FUNAKOSHI

    IPC: D01D4/02 ,  D01D5/08 ,  D01F8/14

    CPC classification number: D01D4/025 ,  D01D5/082 ,  D01D5/36 ,  D01F8/00 ,  D01F8/14 ,  D10B2331/04 ,  Y10T428/2931

    Abstract: A multicomponent fiber includes a sea component and an island component, wherein in cross-section observation of the multicomponent fiber, the multicomponent fiber includes a sea-island region with the plurality of island components arranged in the sea component; and one or more sea component regions formed only of the sea component between the sea-island region, and a width (H) of the sea component region is larger than a maximum value of a distance (W) between island components existing in the sea-island region and neighboring each other.

    Abstract translation: 多组分纤维包括海组分和岛组分，其中在多组分纤维的横截面观察中，多组分纤维包括海岛部分，其中多个岛组分布置在海组分中; 并且在海岛区域之间仅由海分量形成的一个或多个海分量区域和海分量区域的宽度（H）大于存在于海中的岛成分之间的距离（W）的最大值 - 地区相邻。

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