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    POLYETHERIMIDE-BASED FIBER, METHOD FOR MANUFACTURING SAME, AND FIBER STRUCTURE CONTAINING SAME
    1.
    发明申请
    POLYETHERIMIDE-BASED FIBER, METHOD FOR MANUFACTURING SAME, AND FIBER STRUCTURE CONTAINING SAME 审中-公开

    公开(公告)号：US20170191191A1

    公开(公告)日：2017-07-06

    申请号：US15468151

    申请日：2017-03-24

    Applicant: KURARAY CO., LTD.

    Inventor： Tetsuya OKAMOTO ,  Akihiro UEHATA ,  Satoshi KATSUYA

    IPC: D01F6/78 ,  D04H1/46 ,  D04H1/4326 ,  D01D1/02 ,  D01D5/08

    Abstract: 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.

    LIQUID PERMEABLE BODY
    5.
    发明申请
    LIQUID PERMEABLE BODY 审中-公开

    公开(公告)号：US20200224345A1

    公开(公告)日：2020-07-16

    申请号：US16823471

    申请日：2020-03-19

    Applicant: Kuraray Co., Ltd

    Inventor： Satoshi KATSUYA ,  Yosuke WASHITAKE ,  Ryokei ENDO

    IPC: D04H1/551 ,  D04H1/593

    Abstract: The purpose of the present invention is to provide a liquid permeable body comprising a porous composite that has different liquid permeabilities between in the in-plane direction and in the out-of-plane direction as well as excellent mechanical properties. The liquid permeable body comprises a porous composite having a structure in which discontinuous reinforcing fibers are dispersed; the dispersed discontinuous reinforcing fibers are bonded with a thermoplastic resin at at least an intersection thereof; voids of continuous openings form a void content of from 30 to 90%; an average value α of fiber orientation angles is from 0 to 40° in an in-plane direction of the discontinuous reinforcing fibers; and an average value β of fiber orientation angles is from 0 to 25° in an out-of-plane direction of the discontinuous reinforcing fibers.

    SPACE FILLING MATERIAL AND SPACE FILLING STRUCTURE, AND METHODS FOR USING THOSE
    7.
    发明申请
    SPACE FILLING MATERIAL AND SPACE FILLING STRUCTURE, AND METHODS FOR USING THOSE 有权

    公开(公告)号：US20210394406A1

    公开(公告)日：2021-12-23

    申请号：US17464744

    申请日：2021-09-02

    Applicant: KURARAY CO., LTD.

    Inventor： Satoshi KATSUYA ,  Ryokei ENDO ,  Yosuke WASHITAKE ,  Shunsuke SUIKO

    IPC: B29C44/34 ,  D04H1/488

    Abstract: Provided are a space filling material and a space filling structure capable of filling a predetermined space for various purposes, and method for using those. A space filling material (11) includes reinforcing fibers as an expansion material and a resin. The reinforcing fibers form a plurality of intersections and are bonded with the resin at at least one of the intersections. Heating of the space filling material causes an expansion stress in at least a thickness direction (X) such that the space filling material fills a predetermined space (13). For example, the space filling material may contain the resin at a volume ratio of 15 to 95 vol % based on a total volume of the reinforcing fibers and the resin.

    REFRACTORY MATERIAL
    8.
    发明申请
    REFRACTORY MATERIAL 审中-公开

    公开(公告)号：US20200277456A1

    公开(公告)日：2020-09-03

    申请号：US16877716

    申请日：2020-05-19

    Applicant: KURARAY CO., LTD.

    Inventor： Satoshi KATSUYA ,  Yosuke Washitake ,  Ryokei Endo ,  Shunsuke Suiko

    IPC: C08J5/04

    Abstract: Provided is an expansive refractory material that not only has excellent fire resistance but also can provide a heat insulating function for protecting a content by expanding to form a heat insulating layer when the refractory material is brought close to a heat source or comes into contact with flame. The refractory material at least includes: discontinuous reinforcing fibers having a thermal conductivity of 4 W/(m·K) or higher; and a flame-retardant thermoplastic resin, wherein the discontinuous reinforcing fibers are dispersed in the refractory material. The refractory material has a post-expansion porosity of 30% or higher.

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