Patents Assigned to Teijin Limited
  • Patent number: 11820858
    Abstract: According to the present invention, there is provided a prepreg characterized by including a reinforcing fiber substrate composed of a reinforcing fiber, and an epoxy resin composition with which the reinforcing fiber substrate is partially or wholly impregnated, in which the epoxy resin composition includes, as an essential component, an epoxy resin, an amine-based curing agent, and a polyamide particle, the epoxy resin composition includes, as an optional component, an epoxy resin-soluble thermoplastic resin; and an epoxy group is introduced to the surface of the polyamide particle, and/or at least one of the epoxy resin, the amine-based curing agent, and the epoxy resin-soluble thermoplastic resin, included in the epoxy resin composition, partially permeates into the polyamide particle.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 21, 2023
    Assignee: TEIJIN LIMITED
    Inventors: Akimichi Oda, Hiroaki Kuwahara, Hironori Kawamoto
  • Publication number: 20230365748
    Abstract: The present invention provides: catalyst particles for use in producing a polyester which has a satisfactory color tone and, after having been molded, has satisfactory transparency (low haze); and a method for producing a polyester using the catalyst particles. The catalyst particles for polyester production according to the present invention comprise a product of reaction between the following titanium compound ingredient (A) and the following phosphorus compound ingredient (B) and have a particle diameter D50 of 10.0 or smaller and a particle diameter D90 of 20.0 ?m or smaller. Ingredient (A): A titanium compound ingredient comprising at least one compound selected from among titanium compounds (1) represented by formula (I) and titanium compounds (2) each obtained by reacting any of the titanium compounds of general formula (I) with either an aromatic polycarboxylic acid represented by general formula (II) or an anhydride thereof.
    Type: Application
    Filed: September 27, 2021
    Publication date: November 16, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Shuto ISHII, Fuminori TAKENAGA
  • Publication number: 20230347636
    Abstract: A composite of polymer member and inorganic substrate, a method of manufacturing the same, and a polymer member therefor are provided. A method for manufacturing a composite 210, 220 of polymer member and inorganic substrate includes: providing a composite 110, 120 of thermally modified polymer layer and inorganic substrate in which one or more thermally modified polymer layers 20, 21, 22 are adhered onto an inorganic substrate 10, and bonding a polymer member 30, 31, 32 to the inorganic substrate via the one or more thermally modified polymer layers 20, 21, 22.
    Type: Application
    Filed: July 11, 2023
    Publication date: November 2, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Junshi SOEDA, Yoshinori IKEDA
  • Publication number: 20230349083
    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.
    Type: Application
    Filed: February 22, 2021
    Publication date: November 2, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Tetsuya AKAMATSU, Kohei OSAKI, Toru KANEKO
  • Patent number: 11800902
    Abstract: A cooling fabric including a moisture-permeable inner surface layer, a spacer fabric and an outer surface layer, wherein the outer surface layer has an air permeability of at most 250 l/dm2/min at 500 Pa measured according to ISO 9237 and wherein the spacer fabric comprises monofilaments extending across the spacer fabric, wherein the monofilaments have a linear density of at least 250 dtex and wherein the monofilaments are present at a density of at most 800 monofilaments per square-inch.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 31, 2023
    Assignee: TEIJIN LIMITED
    Inventors: Hans Gorissen, Peter Gerard Akker, Alex Van Norel, Marijke Timmermans, Mukund Tiwari, Marc-Jan De Haas
  • Patent number: 11795279
    Abstract: A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) satisfies 6.7×101 to 3.3×103, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of LwA1/(NA1ave×DA12) of 1.0×102 to 3.3×103, the carbon fiber bundles A1 having an average bundle width WA1 less than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material is also provided.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: October 24, 2023
    Assignee: Teijin Limited
    Inventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi
  • Publication number: 20230333538
    Abstract: A process for forming an intermediate or final resin sheet by virtually segmenting a strip-like, extrusion-molded resin sheet into a plurality of individual areas corresponding to intermediate resin sheets. Each individual area is further virtually segmented into segmented areas. Shrinkage rate related information related to shrinkage rate of each segmented area is acquired for each segmented area. When implementing an intermediate processing, processing conditions are corrected for each individual area based on the shrinkage rate related information for each individual area and for each segmented area. The intermediate resin sheet may be heat press processed using heat press processing condition information.
    Type: Application
    Filed: August 5, 2021
    Publication date: October 19, 2023
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TEIJIN LIMITED
    Inventors: Kazumasa OKUMURA, Toshiaki HOTAKA
  • Publication number: 20230331906
    Abstract: According to the present invention, there is provided a prepreg characterized by including a reinforcing fiber substrate composed of a reinforcing fiber, and an epoxy resin composition with which the reinforcing fiber substrate is partially or wholly impregnated, in which the epoxy resin composition includes, as an essential component, an epoxy resin, an amine-based curing agent, and a polyamide particle, the epoxy resin composition includes, as an optional component, an epoxy resin-soluble thermoplastic resin; and an epoxy group is introduced to the surface of the polyamide particle, and/or at least one of the epoxy resin, the amine-based curing agent, and the epoxy resin-soluble thermoplastic resin, included in the epoxy resin composition, partially permeates into the polyamide particle.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Akimichi ODA, Hiroaki KUWAHARA, Hironori KAWAMOTO
  • Patent number: 11787126
    Abstract: A bonding system includes a supporting jig having a mounting surface on bonding substrates which are mounted, a bonding device that sandwiches and welds the bonding substrates between itself and the mounting surface, an articulated robot to which the bonding device is attached, and a control unit that controls the articulated robot and the bonding device.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 17, 2023
    Assignees: TOYOTA CUSTOMIZING & DEVELOPMENT CO., LTD., AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, TORAY INDUSTRIES, INC., TEIJIN LIMITED, KOMATSU LTD., SUBARU CORPORATION
    Inventors: Kenji Furuyashiki, Hiroshi Yuchi, Satoshi Hirawaki, Yoshinori Yamamori, Takayuki Mori, Yoshihiro Iwano, Kazuaki Amaoka
  • Patent number: 11787129
    Abstract: The present invention provides: a surface-coated film which is for being integrally formed with a fiber impregnation resin; a surface-coated fiber-reinforced resin molded product; and a manufacturing method thereof. The surface-coated film has a base film B and an easily adhesive layer A provided on the base film B, wherein the base film B has a flat layer b2 and an easily molded layer b1 adjacent to the easily adhesive layer A, the thickness of the easily adhesive layer A is 30-250 nm, the thickness of the base film B is 50-500 ?m, the easily molded layer b1 and the flat layer b2 satisfy both expression 1 of 3?ratio (EHb2/EHb1) of storage elastic modulus EHb2 of flat layer b2 at 150° C. to storage elastic modulus EHb1 of easily molded layer b1 at 150° C., and expression 2 of 1,000 MPa?storage elastic modulus ELb1 of easily molded layer b1 at 23° C.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: October 17, 2023
    Assignee: Teijin Limited
    Inventors: Yoshitaka Tanaka, Koji Kubo
  • Publication number: 20230327124
    Abstract: The present invention provides a resin-attached fiber characterized by: including conductive fibers having an average fiber diameter of 10-5000 nm and an average aspect ratio of 30 or greater, and a thermoplastic resin that is integrated with the conductive fibers contacting the surface of at least a portion of the conductive fibers; and the powder volume resistivity of the resin-attached fiber being 10 ?·cm or less when the density is 0.8 g/cm3.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 12, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Kazuki YACHI, Takahiro DAIDO
  • Publication number: 20230321886
    Abstract: A process management system virtually segments an extruded resin sheet into individual areas associated with several resin sheets. The individual areas are further virtually segmented into segmented areas. Curvature related information related to a curvature after completion of a heat press processing is acquired for each segmented area for each individual area. In a coating condition per area setting process, coating conditions are set for each segmented area for each individual area in accordance with a curvature based on curvature related information of each segmented area for each individual area. In a coating implementing process, a coating is applied to each segmented area for each individual area based on the coating condition.
    Type: Application
    Filed: August 5, 2021
    Publication date: October 12, 2023
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TEIJIN LIMITED
    Inventors: Kazumasa OKUMURA, Toshiaki HOTAKA
  • Publication number: 20230323071
    Abstract: The present disclosure relates to a method for decomposing a plastic-containing material which makes it possible to stably and efficiently decompose a plastic-containing material, and a method for recovering an inorganic material, as well as a regenerated carbon fiber and a method for producing the regenerated carbon fiber. The present disclosure also relates to a blended spun yarn comprising a regenerated carbon fiber, a carbon-fiber-reinforced thermoplastic resin pellet comprising the blended spun yarn, and a method for producing them, a carbon-fiber-reinforced thermoplastic resin strand and a method for producing the same, and a carbon-fiber-reinforced thermoplastic pellet.
    Type: Application
    Filed: August 31, 2021
    Publication date: October 12, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Shingo NYUI, Terutaka TOYOSADA, Tomoyoshi YAMAMOTO, Ryuji NONOKAWA, Guofei HUA, Takuya MURAKAMI
  • Publication number: 20230321894
    Abstract: Provided are a method of producing a curved member, the method containing preparing a polycarbonate resin laminate with a hard coat layer for heat bending that includes a permeation layer (B layer) and a hard coat layer (C layer) sequentially layered on at least one surface of a polycarbonate resin base material layer (A layer) having a thickness of from 0.1 mm to 20 mm, and satisfying the requirements (a) to (d), pre-heating the polycarbonate resin laminate at from a temperature higher than Tg by 5° C. to a temperature higher than Tg by 70° C., in which Tg (° C.) is a glass transition temperature of a polycarbonate resin of the prepared polycarbonate resin laminate, and curving the polycarbonate resin laminate obtained by the pre-heating by applying pressure to the polycarbonate resin laminate, and a polycarbonate resin laminate with a hard coat layer for heat bending.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 12, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Tatsuya EKINAKA, Takashi YODA, Hiroshi KISHIMOTO, Tomoaki AKAOKA
  • Patent number: 11780124
    Abstract: An apparatus for manufacturing a thermoplastic resin material, including: a mold for molding a base material containing a thermoplastic resin into a predetermined shape; and a transfer mechanism that places the base material in the mold, wherein the transfer mechanism includes a detection mechanism that detects a state of the base material, and a controlling unit that controls operation of the mold and the transfer mechanism.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: October 10, 2023
    Assignees: HONDA MOTOR CO., LTD., KADO CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, TORAY INDUSTRIES, INC., TEIJIN LIMITED, SUBARU CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOWA INDUSTRIAL CO., LTD.
    Inventors: Satoshi Hirawaki, Yoshiaki Matsumoto, Shunya Hatanaka, Takashi Kusaka, Yasunari Kuratani
  • Patent number: 11777175
    Abstract: A separator includes a porous substrate, and a porous layer formed on one or both surfaces of the substrate and containing a polyvinylidene fluoride type resin and a filler, in which the filler content in the porous layer is from 30 to 80% by mass with respect to the total mass of the polyvinylidene fluoride type resin and the filler, and the polyvinylidene fluoride type resin is at least one resin selected from the following resin A and B: resin A: a copolymer having a weight average molecular weight of from 100,000 to 350,000, and a content of HFP is more than 5% by mass but not more than 11% by mass; and resin B: a copolymer having a weight average molecular weight of from 100,000 to 1,000,000, in which a content of HFP is more than 11% by mass but not more than 15% by mass.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 3, 2023
    Assignee: TEIJIN LIMITED
    Inventors: Susumu Honda, Satoshi Nishikawa, Takashi Yoshitomi, Tomoya Hamada, Yoshimitsu Takano
  • Patent number: 11772370
    Abstract: A laminated body in which a thermoplastic resin layer, a thermosetting resin layer, and a protective film are layered one on another in this order, in which the thermosetting resin layer contains a thermosetting resin composition containing two or more kinds of organometallic complex, a surface of the protective film at an opposite side of the thermosetting resin layer has a surface roughness Ra of 30 nm or less, and an amount of nitrogen atoms present at the surface of the protective film at the side of the thermosetting resin layer is less than 1 atm %.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: October 3, 2023
    Assignee: TEIJIN LIMITED
    Inventors: Yoshitaka Tanaka, Koji Kubo
  • Patent number: 11773258
    Abstract: An object of the present invention is to provide a polycarbonate resin composition which satisfies mechanical properties, flame retardancy, and appearance of molded articles at a higher level. The flame-retardant polycarbonate resin composition of the present disclosure contains, based on 100 parts by weight of a resin component consisting of (A) 40 to 100 parts by weight of a polycarbonate resin (component A) and (B) 60 to 0 parts by weight of a polyester resin (component B), (CI) 0 to 30 parts by weight of a polymer obtained by polymerizing at least one selected from the group consisting of an aromatic vinyl monomer, a vinyl cyanide monomer, and an alkyl (meth) acrylate monomer (component CI), (CII) 1 to 10 parts by weight of an impact modifier other than the component CI (component CII), (D) 1 to 20 parts by weight of phosphazene having 98.5 mol % or more of phosphazene cyclic trimer (component D), and (E) 0.05 to 2 parts by weight of dripping inhibitor (component E).
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: October 3, 2023
    Assignee: TEIJIN LIMITED
    Inventor: Kento Masumura
  • Patent number: 11760840
    Abstract: The present invention provides a resin composition which is excellent in moisture and heat resistance, thermal stability, rigidity, surface impact properties and chemical resistance. The resin composition includes, based on a total of 100 parts by weight consisting of (A) 30 to 99 parts by weight of a resin (component A), which is composed of 10 to 100 wt % of a polycarbonate-polydiorganosiloxane copolymer resin (component A1) and 0 to 90 wt % of an aromatic polycarbonate resin (component A2), and (B) 1 to 70 parts by weight of a polyester resin (component B), (C) 10 to 50 parts by weight of a filler (component C) which is surface-treated with a silane coupling agent having an alkyl group, wherein the content of rubber-like polymer is 3 parts by weight or less.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 19, 2023
    Assignee: TEIJIN LIMITED
    Inventor: Ozora Baba
  • Publication number: 20230280311
    Abstract: An inspection device includes a storage unit for storing a mechanical property inference model generated by machine learning based on mechanical property information and nondestructive inspection information of a fiber-reinforced first molded article region for which the mechanical property information and the nondestructive inspection information are known, the mechanical property inference model being configured to be input nondestructive inspection information of a second molded article region which is reinforced with reinforcing fibers for predicting unknown mechanical property information of the second molded article region.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 7, 2023
    Applicant: TEIJIN LIMITED
    Inventors: Kaori TANIGAMI, Chio MINEO, Chihiro IMANAKA, Shota NAGATA