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公开(公告)号：US20190044118A1
公开(公告)日：2019-02-07
申请号：US16044585
申请日：2018-07-25
Applicant: TEIJIN LIMITED
Inventor： Hiroshi SAKURAI , Satoshi NISHIKAWA , Tetsuya AKAMATSU
IPC: H01M2/16 , H01M2/14 , H01M4/62 , H01M10/0525 , H01M4/13
Abstract: A separator for a non-aqueous secondary battery that is composed of a composite membrane containing a porous substrate, and a heat-resistant adhesive porous layer provided on one side or both sides of the porous substrate, in which the heat-resistant adhesive porous layer contains an acrylic type resin, and a heat-resistant resin that has a glass transition temperature of 200° C. or more and that has an amide-structure.
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公开(公告)号：US20230139781A1
公开(公告)日：2023-05-04
申请号：US17798791
申请日：2021-02-22
Applicant: Teijin Limited
Inventor： Tetsuya AKAMATSU , Kohei OSAKI , Toru KANEKO
Abstract: An object of the present invention is to provide a stitched fiber-reinforced substrate material capable of suppressing the formation of microcracks in a fiber reinforced composite material. The stitched fiber-reinforced substrate material of the present invention is a fiber-reinforced substrate material formed by stitching reinforcement fiber sheets made of reinforcement fibers using stitching yarns, and the stitching yarn has a linear expansion coefficient in the fiber axial direction of −1×10−6 to 70×10−6/K after being heated at 180° C. for 2 hours and then cooled. The stitching yarn is preferably a stitching yarn to which an organic compound having a polar group is adhered.
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公开(公告)号：US20230124757A1
公开(公告)日：2023-04-20
申请号：US17914630
申请日：2021-02-22
Applicant: TEIJIN LIMITED
Inventor： Tetsuya AKAMATSU , Kohei OSAKI , Toru KANEKO
Abstract: An object of the present invention is to provide a stitched fiber-reinforced substrate material capable of suppressing the formation of microcracks in a fiber reinforced composite material. The stitched fiber-reinforced substrate material of the present invention is a stitched fiber-reinforced substrate material formed by stitching reinforcement fiber sheets made of reinforcement fibers using stitching yarns that exhibit an in-plane shear strength transition rate of 5% or more. The stitching yarn is preferably adhered by an organic compound having a polar group.
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Patent Agency Ranking
公开(公告)号：US20230151165A1
公开(公告)日：2023-05-18
申请号：US17984328
申请日：2022-11-10
Applicant: Teijin Limited
Inventor： Tetsuya AKAMATSU
IPC: C08J5/18 , C08K3/36 , H01M10/0525 , H01M50/423 , H01M50/443
CPC classification number: C08J5/18 , C08K3/36 , H01M10/0525 , H01M50/423 , H01M50/443 , C08J2377/10 , H01G9/02
Abstract: A high-concentration particle-containing film that contains a large amount of particles while having excellent flexibility is provided. The high-concentration particle-containing film of the invention includes a para-copolymerized aromatic polyamide obtained by copolymerization of para-phenylenediamine, a copolymerizing diamine and para-terephthaloyl dichloride, and particles, wherein the weight proportion of the copolymerizing diamine is in the range of 25 to 75 wt % of the entire diamine component and the particles are present at 55 vol % or greater, and the copolymerizing diamine is 3,3′-oxydiphenylenediamine, 3,4′-oxydiphenylenediamine or 4,4′-oxydiphenylenediamine.
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公开(公告)号：US20200247964A1
公开(公告)日：2020-08-06
申请号：US16626720
申请日：2018-06-27
Applicant: TEIJIN LIMITED
Inventor： Tetsuya AKAMATSU
IPC: C08J5/18 , C08K3/36 , H01M10/0525 , H01M2/16
Abstract: A high-concentration particle-containing film that contains a large amount of particles while having excellent flexibility is provided. The high-concentration particle-containing film of the invention includes a para-copolymerized aromatic polyamide obtained by copolymerization of para-phenylenediamine, a copolymerizing diamine and para-terephthaloyl dichloride, and particles, wherein the weight proportion of the copolymerizing diamine is in the range of 25 to 75 wt % of the entire diamine component and the particles are present at 55 vol % or greater, and the copolymerizing diamine is 3,3′-oxydiphenylenediamine, 3,4′-oxydiphenylenediamine or 4,4′-oxydiphenylenediamine.
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公开(公告)号：US20230349083A1
公开(公告)日：2023-11-02
申请号：US17800658
申请日：2021-02-22
Applicant: TEIJIN LIMITED
Inventor： Tetsuya AKAMATSU , Kohei OSAKI , Toru KANEKO
Abstract: An object of the present invention is to provide a stitched fiber-reinforced substrate material capable of suppressing the formation of microcracks in a fiber reinforced composite material. The stitched fiber-reinforced substrate material of the present invention is a stitched fiber-reinforced substrate material formed by stitching reinforcement fiber sheets made of reinforcement fibers using stitching yarns, to which an organic compound having a polar group is adhered. The organic compound having a polar group is preferably a compound having a polyoxyalkylene structure, and also preferably a compound having an epoxy group. The organic compound having a polar group is preferably adhered in an amount of 0.1 to 10 wt % with respect to the mass of the stitching yarn.
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公开(公告)号：US20210194006A1
公开(公告)日：2021-06-24
申请号：US16973664
申请日：2019-06-28
Applicant: TEIJIN LIMITED
Inventor： Tetsuya AKAMATSU
IPC: H01M4/62 , H01M10/0525 , H01M50/449 , H01M50/423 , H01M50/446
Abstract: Provided is a binder for use in an electrode layer or separator for a lithium-ion secondary battery, wherein the binder is unlikely to cause powder removal and does not completely cover the surface of the active material particles when used in an electrode layer as a binder. The binder of the present invention is a binder for a non-aqueous secondary battery, the binder comprising a fibrid of an aromatic polyamide, wherein the fibrid swells and is not dissolved in an N-methyl-2-pyrrolidone solvent in which an alkali metal salt and/or an alkaline earth metal salt is present at a concentration of 1,000 ppm or less, and is completely dissolved in an N-methyl-2-pyrrolidone solvent in which an alkali metal salt and/or an alkaline earth metal salt is present at a concentration of 10,000 ppm or more.
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公开(公告)号：US20190062511A1
公开(公告)日：2019-02-28
申请号：US16093367
申请日：2017-04-13
Applicant: TEIJIN LIMITED
Inventor： Kazuma KUROKAWA , Tetsuya AKAMATSU , Hiroaki KUWAHARA
Abstract: The present invention provides a prepreg which is composed of at least a matrix resin and reinforcing fibers, and which is characterized in that: conductive parts are formed on one surface or both surfaces of a fiber layer that is formed of the reinforcing fibers; and the volume resistivity ρ (Ωcm) of the fiber layer in the thickness direction, the thickness t (cm) of the fiber layer and the average interval L (cm) between the conductive parts arranged on the prepreg surface satisfy formula (1). t/ρ×1/L×100≥0.5 Formula (1):
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