CONCAVO-CONVEX PLATE FOR ELECTRIC SPINNING METHOD

    公开(公告)号:US20230044658A1

    公开(公告)日:2023-02-09

    申请号:US17787908

    申请日:2020-12-22

    申请人: KAO CORPORATION

    发明人: Teruyuki FUKUDA

    IPC分类号: D01D5/00 D01D5/04

    摘要: The present invention relates to [1] a concavo-convex plate for an electrospinning method, in which a surface resistivity of the concavo-convex plate is not more than 1×10−2Ω/□, and the concavo-convex plate has an uneven structure on at least a part of a surface thereof, and [2] a process for producing a nonwoven fabric containing nanofibers by an electrospinning method using the concavo-convex plate for an electrospinning method according to the aforementioned [1] as a collector, which includes the step of depositing the nanofibers on a surface of the concavo-convex plate on which the uneven structure is formed.

    Spandex from poly(tetramethylene-co- ethyleneether)glycols blended with polymeric glycols

    公开(公告)号:US11421070B2

    公开(公告)日:2022-08-23

    申请号:US13799004

    申请日:2013-03-13

    摘要: A polyurethaneurea composition comprises a reaction product of at least one diisocyanate compound, a polymeric glycol, a poly(tetramethylene-co-ethyleneether) glycol comprising constituent units derived by copolymerizing tetrahydrofuran and ethylene oxide (EO) wherein the portion of the constituent units derived from ethylene oxide is present in the poly(tetramethylene-co-ethyleneether) glycol from greater than about 37 to about 70 mole percent, at least one diamine chain extender, and at least one chain terminator. The invention further relates to the use of blends of polymeric glycols and poly(tetramethylene-co-ethyleneether) glycols as the soft segment base in spandex compositions. The invention also relates to new polyurethane compositions comprising polymeric glycols and poly(tetramethylene-co-ethyleneether) glycols, and their use in spandex.

    CLEANING MEMBER, AND METHOD FOR MANUFACTURING THE SAME

    公开(公告)号:US20220134386A1

    公开(公告)日:2022-05-05

    申请号:US17433843

    申请日:2020-02-25

    申请人: Kao Corporation

    摘要: A cleaning member includes a nonwoven structure whose shape is retained by entanglement between single fibers having a median fiber diameter of from 100 to 2000 nm. The nonwoven structure has an apparent density of from 0.05 to 0.60 g/cm3. Preferably, the cleaning member may further include a support, and the support and the nonwoven structure may be arranged in contact with one another. Preferably, the single fiber may be an electrospun fiber. A method for manufacturing a cleaning member includes: a step of performing spinning by electrospinning, and thereby forming a deposit of a single fiber; and a step of pressing the deposit, and thereby forming a nonwoven structure having an apparent density of from 0.05 to 0.60 g/cm3.