Patents Assigned to Teijin Limited
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Publication number: 20210032409Abstract: 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: ApplicationFiled: February 1, 2019Publication date: February 4, 2021Applicant: TEIJIN LIMITEDInventor: Ozora BABA
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Publication number: 20210024713Abstract: The present invention provides a prepreg including a fiber-reinforced substrate composed of a carbon fiber and an epoxy resin composition with which the fiber-reinforced substrate is partially or wholly impregnated, the prepreg being characterized in that the epoxy resin composition includes an epoxy resin, dicyandiamide, and an aromatic amine having a structure of Chemical Formula (1) in which at least one substituent other than a hydrogen atom is included in an ortho position with respect to an amino group.Type: ApplicationFiled: March 12, 2019Publication date: January 28, 2021Applicant: TEIJIN LIMITEDInventors: Mizuki SASAKI, Toru KANEKO
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Publication number: 20210008851Abstract: An object of the present invention is to provide a method for producing a substrate with a hard coat layer that can maintain the properties of the functional fine particles for a long period of time even under a severe use environment and has excellent wear resistance. A method for producing a substrate with a hard coat layer characterized by comprising (1) providing a semi-cured hard coat layer consisting mainly of a resin on the substrate, satisfying the following formula (a): 12?X?600 (a), wherein X indicates time in second required for the (A) haze of the glass with the semi-cured hard coat layer to exceed 5%, when the glass with the semi-cured hard coat layer is obtained by layering a 10 ?m-thick, semi-cured hard coat layer on one side of 3 mm-thick float-processed soda glass; and then thus obtained glass with the semi-cured hard layer is immersed in an N-methylpyrrolidone solvent in an environment of 40° C.Type: ApplicationFiled: February 12, 2019Publication date: January 14, 2021Applicant: TEIJIN LIMITEDInventor: Tatsuya EKINAKA
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Patent number: 10889076Abstract: A method for producing a fiber-reinforced resin shaped product, by clamping and press-molding a molding material containing reinforcing fibers and a thermoplastic resin as a matrix in molds having an upper mold and a lower mold. The method includes: disposing the molding material heated in a plastic state, between the upper mold and the lower mold; initiating the clamping to apply a force in a substantially clamping direction to a certain site of the molding material; starting deformation of the molding material in the substantially clamping direction; applying a force in the substantially clamping direction to a fixing site which is at least a part of a substantially outer peripheral end portion of the molding material but is different from the certain site; pressing and fixing the fixing site, and completing the clamping to obtain a fiber-reinforced resin shaped product having an edge portion.Type: GrantFiled: January 6, 2017Date of Patent: January 12, 2021Assignee: Teijin LimitedInventors: Hodaka Yokomizo, Shuhei Suzuki, Masahiro Kitagawa, Hidenori Aoki
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Patent number: 10889070Abstract: According to one example of the present invention, there is provided a composite material for cold pressing including: carbon fibers that are unidirectional continuous fibers; and a thermoplastic resin, wherein the composite material has a thickness of 0.3 mm or more, when the composite material is observed from a direction perpendicular to a continuous fiber direction, a cross section of the carbon fibers included in the composite material satisfies the following specific Expressions (1), (2) and (3): n1/N?0.1??Expression (1), p<0.01??Expression (2), and 0.001?(1?dc/(dr*(Vr/100)+df*(Vf/100))?0.1??Expression (3).Type: GrantFiled: November 8, 2016Date of Patent: January 12, 2021Assignee: Teijin LimitedInventor: Yutaka Kondou
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Publication number: 20210003538Abstract: The present invention provides a method for inspecting a material to be inspected using ultrasound waves, the method including the following step 201 to step 301, in which step 201 is performed in a condition where: the surface temperature of a material under inspection—atmospheric temperature >2° C., and inspection using ultrasound waves in step 301 satisfies: a refractive attenuation rate ?1.5%. Step 201: blowing a fluid from a blowing port onto the material to be inspected. Step 301: inspecting the material to be inspected using the ultrasound waves after step 201 or at the same time as the step 201.Type: ApplicationFiled: March 6, 2019Publication date: January 7, 2021Applicant: Teijin LimitedInventors: Takashi Toyozumi, Hodaka Yokomizo, Makoto Ootsubo, Shuhei Suzuki, Akihiko Obata
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Publication number: 20210002420Abstract: The purpose of the present invention is to provide a polyester resin or polyester carbonate resin, which has high refractive index, while achieving an excellent balance between heat resistance and low birefringence. A polyester resin or a polyester carbonate resin, which contains repeating units represented by the following formulae (1) and (2), and wherein the ratio of the repeating unit represented by formula (1) to the repeating unit represented by formula (2) is 15:85 to 85:15.Type: ApplicationFiled: March 11, 2019Publication date: January 7, 2021Applicant: TEIJIN LIMITEDInventors: Kyosuke YAMADA, Manabu MATSUI, Takatsune YANAGIDA, Kazuyoshi OGASAWARA, Kazunori NUNOME, Keisuke SATO, Tatsuya OYAMA
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Publication number: 20210002819Abstract: Provided is a fiber material for cement reinforcement, configured such that a resin A containing an isocyanate compound as a constituent component is present inside a fiber bundled body, and a resin B containing an epoxy resin as a constituent component is present on a surface of the fiber bundled body. Further, it is preferable that the resin A contains a polyol or an epoxy compound as a constituent component in addition to the isocyanate compound, the resin B contains an acrylic-modified epoxy resin or a bisphenol-A epoxy resin as a main component, the fiber bundled body has a tensile strength of 7 cN/dtex or more, and the fiber bundled body includes 50 to 3,000 single fibers. The invention is also addressed to a concrete or mortar molded article using the above fiber material for reinforcement.Type: ApplicationFiled: September 17, 2020Publication date: January 7, 2021Applicant: TEIJIN LIMITEDInventors: Shuhei OKAMURA, Shintaro Shimada, Akira Teraoka, Takeya Dei
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Publication number: 20200407548Abstract: The present invention provides an epoxy resin composition including tetraglycidyl-3,4?-diaminodiphenyl ether, and a curing agent composed of an aromatic polyamine having a predetermined substituent in at least one ortho position with respect to an amino group, a predetermined aromatic epoxy resin having a glycidyl ether group, or an epoxy resin having a predetermined epoxy equivalent weight.Type: ApplicationFiled: March 14, 2019Publication date: December 31, 2020Applicant: TEIJIN LIMITEDInventors: Suguru OZAWA, Hironori KAWAMOTO, Takaya SUZUKI, Hiroaki KUWAHARA, Toru KANEKO
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Publication number: 20200411827Abstract: An embodiment according to the invention provides a separator for a non-aqueous secondary battery, containing a porous substrate and an adhesive porous layer that contains resin A and resin B1; (1) resin A: a copolymer containing vinylidene fluoride (VDF) and hexafluoropropylene (HFP), in which a molar content of HFP monomer unit with respect to a total molar quantity of VDF monomer unit and HFP monomer unit is from more than 1.5 mol % to 3.5 mol %, and (2) resin B1: a copolymer containing VDF, HFP, and a monomer of formula (1), in which a molar content of HFP monomer unit with respect to a total molar quantity of VDF monomer unit, HFP monomer unit, and a monomer unit of formula (1) is from more than 3.5 mol % to 15 mol % (R1 to R3: H, a halogen atom, a carboxyl group, etc., or a C1-5 alkyl group; X: a single bond, a C1-5 alkylene group, etc., Y: H, a C1-5 alkyl group, etc.Type: ApplicationFiled: November 29, 2018Publication date: December 31, 2020Applicant: Teijin LimitedInventors: Rika KURATANI, Megumi SATO, Satoshi NISHIKAWA
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Publication number: 20200407498Abstract: The purpose of the present invention is to provide: a novel polymer which has an electro-optical effect; a method for producing such a polymer; and a light control element which uses such a polymer. The present invention relates to a non-crosslinkable polycarbonate which contains a moiety that has electro-optical characteristics. The present invention also relates to a method for producing a polycarbonate, which comprises a step for reacting a bisphenol compound, a diol compound that has electro-optical characteristics, and a phosgene in the presence of an acid binding agent and solvent. The present invention also relates to a light control element which comprises such polycarbonate.Type: ApplicationFiled: March 1, 2019Publication date: December 31, 2020Applicants: TEIJIN LIMITED, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Naoshi TAKAHASHI, Katsuhiro YAMANAKA, Akira OTOMO, Toshiki YAMADA
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Publication number: 20200407866Abstract: Provided is a plating diaphragm used for a plating method including disposing the plating diaphragm between an anode and a substrate that is a cathode, applying a voltage between the anode and the substrate, in a state in which a surface of the substrate is in contact with the plating diaphragm, to reduce metal ions contained in the plating diaphragm, and depositing a metal derived from the metal ions on the surface of the substrate, to form a metal film on the surface of the substrate, the plating diaphragm containing a base made of a polyolefin porous membrane, in a case in which pure water is dropped on a surface of the plating diaphragm, a contact angle ? between a droplet of the pure water and the surface of the plating diaphragm after one second has passed since landing of the droplet of the pure water on the surface is from 0° to 90°, and a tensile breaking strength is from 11 MPa to 300 MPa.Type: ApplicationFiled: June 25, 2020Publication date: December 31, 2020Applicants: TEIJIN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshikazu IKUTA, Yu NAGAO, Hirofumi IISAKA
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Patent number: 10865272Abstract: A thermosetting resin composition which produces no free isocyanate even when a carbodiimide compound is used and provides a cured resin having high heat resistance. The thermosetting resin composition makes it possible to reduce the curing temperature, cures in a short time and provides a cured rein having a high glass transition temperature. The thermosetting resin composition includes: (A) an epoxy resin (component A); and (B) a cyclic carbodiimide compound (component B) including a cyclic structure having one carbodiimide group in which first nitrogen and second nitrogen are bonded together by a bond group and having 8 to 50 atoms forming the cyclic structure and/or (b) a polyvalent amine-based curing agent (component b).Type: GrantFiled: March 5, 2019Date of Patent: December 15, 2020Assignee: TEIJIN LIMITEDInventors: Shinichiro Shoji, Kouhei Endo, Masaya Shibano
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Publication number: 20200385891Abstract: An object of the present invention is to provide a carbon fiber which exhibits excellent strength development rate when used in a composite material. The present invention that solves the problems is a carbon fiber which simultaneously satisfies the following formulae (1) and (2): Lc/d?3??(1) TS×d×Lc>6.0×105??(2) wherein: Lc is an X-ray crystallite size (?), d is a filament diameter (?m), and TS is a strand tensile strength (MPa).Type: ApplicationFiled: November 22, 2018Publication date: December 10, 2020Applicants: TEIJIN LIMITED, TEIJIN CARBON EUROPE GMBHInventors: Shuhei YOSHIDA, Hidekazu YOSHIKAWA, Yosuke NAKAMURA, Hironori KAWAMOTO, Takaya SUZUKI, Toru KANEKO
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Publication number: 20200377682Abstract: The present invention is a polymer substrate with a hard coat layer, which is obtained by directly laminating a polymer substrate, a base cured layer and a silicon oxide layer, wherein the base cured layer has a thickness of 1-20 ?m and contains 10-90 parts by weight of a polyfunctional acrylate and 90-10 parts by weight of inorganic oxide fine particles and/or a hydrolytic condensation product of a silicon compound or contains a hydrolytic condensation product of an organic silicon compound as a primary component, and the silicon oxide layer satisfies requirement (a1) below at a position 0.04 ?m in the thickness direction from the interface between the base cured layer and the silicon oxide layer and satisfies requirement (a3) below at the surface of the silicon oxide layer on the opposite side from the interface, Requirement (a1): when the chemical composition is represented by SiOxCyHz, x falls within the range 1.93-1.98, y falls within the range 0.04-0.15 and z falls within the range 0.10-0.50.Type: ApplicationFiled: March 28, 2018Publication date: December 3, 2020Applicants: TEIJIN LIMITED, TSUKISHIMA KIKAI CO., LTD.Inventors: Tatsuya EKINAKA, Tatsuichirou KON, Hiroshi KISHIMOTO, Yume TAKEDA, Takehiro SUGA, Satoshi OGATA, Masato NAKAGOMI
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Publication number: 20200381138Abstract: A transparent conductive laminate 100 includes a laminated substrate 50 and a transparent conductive layer 10 laminated on the laminated substrate 50. The laminated substrate 50 includes a transparent substrate 30 and a cured resin layer 20 laminated on the transparent substrate. The transparent conductive layer 10 includes a fibrous conductive material. The laminated substrate has a top peak of a transmission spectrum and a bottom peak of a reflection spectrum in a range of 385 nm to 485 nm, and the laminated substrate does not have a bottom peak of a transmission spectrum and a top peak of a reflection spectrum in a range of 385 nm to 485 nm. The refractive index of the cured resin layer is less than the refractive index of the transparent substrate.Type: ApplicationFiled: February 19, 2019Publication date: December 3, 2020Applicant: TEIJIN LIMITEDInventors: Haruhiko ITOH, Koichi IMAMURA
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Patent number: 10850431Abstract: A conveyance device includes a plurality of holding mechanisms and one or more pressing mechanisms, the holding mechanisms each include a holder that holds a molding material and a holder movement mechanism that moves the holder, and the pressing mechanisms each include a pusher that comes into contact with and pushes the molding material and a pusher movement mechanism that moves the pusher.Type: GrantFiled: December 4, 2017Date of Patent: December 1, 2020Assignees: SHIBAURA MACHINE CO., LTD., TEIJIN LIMITEDInventors: Kazuhito Sato, Chiaki Shigematsu, Hodaka Yokomizo, Tetsuya Yoneda, Akihiko Obata
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Publication number: 20200369843Abstract: 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: ApplicationFiled: November 21, 2018Publication date: November 26, 2020Applicant: Teijin LimitedInventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi
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Publication number: 20200367758Abstract: A temperature sensor (210) measures a temperature inside clothes being a temperature inside the clothes worn by a user. The acceleration sensor (220) detects acceleration applied to the user. A processing device (100) estimates a deep body temperature that is a temperature inside the body of the user based on the temperature inside the clothes measured by the temperature sensor (210) and an acceleration detected by the acceleration sensor (220).Type: ApplicationFiled: June 15, 2018Publication date: November 26, 2020Applicant: TEIJIN LIMITEDInventors: Tasuku KIMURA, Hirokazu HAYASHI, Ryo YASUMITSU, Hiroshi NOSE, Yu OGAWA
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Patent number: 10843387Abstract: To provide a method of manufacturing a press molding by molding a molding material comprising reinforced fibers and a thermoplastic resin by a cold press method. The method of manufacturing a press molding comprising reinforced fibers and a thermoplastic resin, includes the steps of: holding the molding material heated at a temperature not lower than the softening temperature with a plurality of grippers installed on a carrier; carrying the molding material between the upper mold and the lower mold of a mold for molding; pushing the molding material with pushers to preform it at a predetermined preforming rate; and press molding the preformed molding by closing the upper mold and the lower mold and applying pressure.Type: GrantFiled: December 16, 2016Date of Patent: November 24, 2020Assignees: TEIJIN LIMITED, SHIBAURA MACHINE CO., LTD.Inventors: Hodaka Yokomizo, Tetsuya Yoneda, Akihiko Obata, Kazuhito Sato, Chiaki Shigematsu