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    POLYURETHANE ELASTIC FIBER
    1.
    发明公开
    POLYURETHANE ELASTIC FIBER 审中-公开

    公开(公告)号：US20230383123A1

    公开(公告)日：2023-11-30

    申请号：US18247221

    申请日：2021-09-29

    Applicant: TORAY OPELONTEX CO., LTD

    Inventor： Kazutake MORITA ,  Toshihiro TANAKA

    IPC: C08L75/08 ,  C08G18/76 ,  C08G18/48

    CPC classification number: C08L75/08 ,  C08G18/7671 ,  C08G18/4854 ,  C08L2205/025 ,  C08L2203/12

    Abstract: Problem To provide a polyurethane elastic yarn having good heat setting properties in a wide temperature range and high thermal adhesive strength in a wide temperature range while also maintaining its elastic properties (permanent deformation and elongation). Solution A polyurethane elastic yarn comprising polyurethane polymer [A] and polyurethane polymer [B] below, wherein the ratio of polyurethane polymer [A] to polyurethane polymer [B] in terms of parts by mass is from 1:99 to 30:70 or from 70:30 to 99:1, the exothermic peak (crystallization peak) of the polyurethane elastic yarn as measured by a differential scanning calorimeter (DSC) is in the range from 110° C. to 210° C., and the heat capacity at the exothermic peak is 3.0 J/g or more and 100 J/g or less. Polyurethane polymer [A]: a polyurethane polymer using as starting materials polymer diol A whose main chain repeating unit is an ether or an ester, diisocyanate A whose main skeleton is aromatic or aliphatic, and a single low molecular weight diol A having from 2 to 4 carbon atoms CA serving as a chain extender. Polyurethane polymer [B]: a polyurethane polymer using as starting materials polymer diol A, diisocyanate A, and a single low molecular weight diol B having from 1 to 4 carbon atoms CB more than CA serving as a chain extender.

    Polyurethane Elastic Yarn and Manufacturing Method Thereof
    2.
    发明申请
    Polyurethane Elastic Yarn and Manufacturing Method Thereof 有权

    公开(公告)号：US20220220642A1

    公开(公告)日：2022-07-14

    申请号：US17613348

    申请日：2020-05-27

    Applicant: TORAY OPELONTEX CO., LTD.

    Inventor： Katsuya SUZUKI ,  Toshihiro TANAKA ,  Kazuki NAESHIRO

    IPC: D02G3/32 ,  D02G3/04

    Abstract: To provide a polyurethane elastic yarn that is superior in unwinding properties and adhesive properties in respect to a hot melt adhesive agent, and to provide a manufacturing method thereof. A polyurethane elastic yarn wherein the main structural component of the polyurethane is a polymer diol or diisocyanate; and includes a polymer that includes, as the main structural unit, a structural unit that uses an aromatic olefin and/or an aliphatic diolefin as a monomer, and is partially hydrogenated or completely hydrogenated.

    POLYURETHANE FIBER
    3.
    发明申请
    POLYURETHANE FIBER 有权
    聚氨酯纤维

    公开(公告)号：US20160002827A1

    公开(公告)日：2016-01-07

    申请号：US14760062

    申请日：2014-01-17

    Applicant: TORAY OPELONTEX CO., LTD.

    Inventor： Toshihiro TANAKA ,  Yasushi SASAKI ,  Koji HIRANO ,  Yasushi FUJITA ,  Fumitake MORI

    IPC: D01F6/70

    CPC classification number: D01F6/70 ,  C11D3/50 ,  C11D3/505 ,  D06M13/005 ,  D06M2101/38

    Abstract: Provided is a fragrance-retaining fiber that, after absorption of a fragrance component, retains the fragrance even though a long period of time has passed. In particular, provided is a fragrance-retaining polyurethane-based fiber having, 48 hours after absorption of a fragrance component, a total fragrance component emission of from 0.1 μg/g·h to 1000 μg/g·h.

    Abstract translation: 提供了一种香料保持纤维，其在吸收香料成分后即使经过长时间也保留香料。 特别地，提供了一种香料保持性聚氨酯系纤维，其吸收了香料成分48小时后，总香气成分的排出量为0.1μg/ g·h〜1000μg/ g·h。

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