公开(公告)号：US20180358541A1

公开(公告)日：2018-12-13

申请号：US16066385

申请日：2016-12-28

Applicant: TEIJIN LIMITED ,  KANSAI UNIVERSITY

Inventor： Yoshiro TAJITSU ,  Shunsuke KANEMATSU ,  Yuhei ONO ,  Suguru OZAWA ,  Tomoyoshi YAMAMOTO ,  Satoko YOSHIZAKI

IPC: H01L41/08 ,  D04C1/02 ,  D04C1/12 ,  D03D1/00 ,  D03D15/00 ,  D04B1/00 ,  D04B21/00 ,  H01L41/04 ,  H01L41/047 ,  H01L41/053 ,  H01L41/113 ,  H01L41/193

CPC classification number: H01L41/082 ,  D03D1/00 ,  D03D1/0088 ,  D03D15/00 ,  D04B1/00 ,  D04B21/00 ,  D04C1/02 ,  D04C1/12 ,  D10B2401/16 ,  G01L1/16 ,  G06F3/041 ,  H01L41/042 ,  H01L41/047 ,  H01L41/0475 ,  H01L41/0533 ,  H01L41/113 ,  H01L41/1132 ,  H01L41/193

Abstract: Provided is a configuration capable of improving the signal strength of a piezoelectric element using piezoelectric fibers. This braided piezoelectric element comprises a core comprising conductive fibers and a sheath comprising braided piezoelectric fibers so as to cover the core, the braided piezoelectric element further comprising a metal terminal connected and fixed to the core in either of the following states A or B. A) A state where a portion of the metal terminal grasps a fiber portion constituting the end of a braided piezoelectric element and the core and the metal terminal are electrically connected to each other and fixed within 1 mm from where the metal terminal grasps the fiber portion. B) A state where: a portion of the metal terminal has a fork or needle shape; the fork-shaped or needle-shaped portion is electrically connected to the core while in contact with the sheath; and the braided piezoelectric element is secured to the metal terminal by another portion of the metal terminal or a component fixed to the metal terminal within 10 mm from the point of the electrical connection.

公开(公告)号：US20240336751A1

公开(公告)日：2024-10-10

申请号：US18681678

申请日：2022-07-27

Applicant: Teijin Limited

Inventor： Kohei OSAKI ,  Suguru OZAWA ,  Toru KANEKO

IPC: C08J5/04 ,  C08G59/24 ,  C08G59/28 ,  C08G59/32 ,  C08G59/38 ,  C08G59/50 ,  C08J5/24

CPC classification number: C08J5/042 ,  C08G59/245 ,  C08G59/28 ,  C08G59/3218 ,  C08G59/3227 ,  C08G59/38 ,  C08G59/5033 ,  C08J5/243 ,  C08J2363/00

Abstract: A fiber-reinforced composite material contains a resin cured product obtained by curing an epoxy resin composition containing a curing agent A, a curing agent B, a curing agent C, an epoxy resin D, an epoxy resin E, and resin particles F, and a stitched reinforcing fiber base material. The fiber-reinforced composite material enables a fiber-reinforced composite material to be provided that achieves high productivity, and exhibits heat resistance and mechanical properties while using an epoxy resin composition that has low viscosity, a long pot life, and fast curability.

公开(公告)号：US20220332939A1

公开(公告)日：2022-10-20

申请号：US17642383

申请日：2019-09-12

Applicant: TEIJIN LIMITED

Inventor： Suguru OZAWA ,  Toru KANEKO ,  Kohei OSAKI

IPC: C08L63/00 ,  C08J5/04 ,  C08G59/32 ,  C08L9/00

Abstract: The present invention provides an epoxy resin composition containing:
an epoxy resin [A] that is a compound represented by Chemical formula (1) shown below: wherein R1 to R4 each independently represent one selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, and a halogen atom, and X represents one selected from —CH2—, —O—, —S—, —CO—, —C(═O)O—, —O—C(═O)—, —NHCO—, —CONH—, and —SO2—;
a bifunctional epoxy resin [B] having an amine type glycidyl group;
a curing agent [C] containing an aromatic polyamine, and having at least one substituent selected from an aliphatic substituent, an aromatic substituent, and a halogen atom at an ortho position with respect to an amino group; and
a particulate rubber component [D].

公开(公告)号：US20210292471A1

公开(公告)日：2021-09-23

申请号：US17266209

申请日：2019-08-07

Applicant: Teijin Limited

Inventor： Suguru OZAWA ,  Akimichi ODA ,  Hideaki TOMINAGA ,  Hiroaki KUWAHARA

IPC: C08G59/32 ,  C08G59/50 ,  C08J5/24 ,  C08J5/04 ,  C07D303/36

Abstract: The present invention provides an epoxy compound indicated by chemical formula (1) (in chemical formula (1), X indicates a C1-10 aliphatic hydrocarbon group, R1 and R2 each independently indicate one selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic group, an alkoxy group, and a halogen atom.)

公开(公告)号：US20170130047A1

公开(公告)日：2017-05-11

申请号：US15322841

申请日：2015-06-30

Applicant: TEIJIN LIMITED

Inventor： Suguru OZAWA ,  Ryuji NONOKAWA ,  Osamu UEMURA ,  Masaya SHIBANO ,  Shinichiro SHOJI

IPC: C08L67/04

CPC classification number: C08L67/04 ,  C08G63/08 ,  C08K3/24 ,  C08K5/0091 ,  C08K5/057 ,  C08K5/098 ,  C08L2201/08 ,  C08L2205/025 ,  C08L2205/24

Abstract: Even when a tin-based polymerization catalyst and a phosphorus-based compound are present in a poly-L-lactic acid (A) and a poly-D-lactic acid (B), by using a specific proportion of an organic acid metal salt or an organic metal salt for stereocomplex crystallization, a stereocomplex polylactic acid composition having a high stereocomplex crystallinity and a high stereocomplex crystal melting point, a small stereocomplex crystal melting point depression even after remelting, a small decrease in the molecular weight, excellent forming processability, and also heat resistance can be provided.

公开(公告)号：US20240141096A1

公开(公告)日：2024-05-02

申请号：US18278138

申请日：2022-02-28

Applicant: TEIJIN LIMITED

Inventor： Suguru OZAWA ,  Akimichi ODA ,  Kohei OSAKI ,  Toru KANEKO

IPC: C08G59/50 ,  C08G59/24 ,  C08G59/28 ,  C08G59/32 ,  C08G59/38 ,  C08J5/04 ,  C08L9/00

CPC classification number: C08G59/5033 ,  C08G59/245 ,  C08G59/28 ,  C08G59/3227 ,  C08G59/38 ,  C08J5/042 ,  C08L9/00 ,  C08J2363/00 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/22

Abstract: An epoxy resin composition contains a curing agent A, a curing agent B, a curing agent C, an epoxy resin D, an epoxy resin E, and resin particles F, wherein the curing agent A is an aromatic polyamine having a substituent selected from an alkyl group, an aromatic group, and a halogen group at each of two ortho positions of an amino group, the curing agent B is an aromatic polyamine that is liquid at 25° C., and the curing agent C is an aromatic polyamine having only one electron donating substituent or no substituent at an ortho position of an amino group, the epoxy resin D is constituted by an epoxy resin which is composed of a monomer containing 4 or more glycidyl groups, and the epoxy resin E is constituted by an epoxy resin which is composed of a monomer containing 2 or 3 glycidyl groups.

公开(公告)号：US20180108826A1

公开(公告)日：2018-04-19

申请号：US15569878

申请日：2016-04-28

Applicant: TEIJIN LIMITED ,  KANSAI UNIVERSITY

Inventor： Yoshiro TAJITSU ,  Yuhei ONO ,  Tomoyoshi YAMAMOTO ,  Shunsuke KANEMATSU ,  Satoko YOSHIZAKI ,  Suguru OZAWA

IPC: H01L41/08 ,  H01L41/09 ,  H01L41/113 ,  H01L41/193 ,  H01L41/29 ,  H01L41/45 ,  G01L1/16 ,  G06F3/041

CPC classification number: H01L41/082 ,  D03D1/0088 ,  G01L1/16 ,  G06F3/0414 ,  H01L41/047 ,  H01L41/0986 ,  H01L41/1132 ,  H01L41/193 ,  H01L41/29 ,  H01L41/45

Abstract: The purpose of the present invention is to provide a fibrous piezoelectric element which enables a large electric signal to be drawn out by stress produced by relatively small deformation. A piezoelectric element includes a braid composed of a conductive fiber and a piezoelectric fiber. In the braid, the conductive fiber is a core, and the piezoelectric fiber is a covering fiber that covers the periphery of the conductive fiber.