Patents by Inventor Kyohei KANO
Kyohei KANO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240182122Abstract: A composite consisting of a metal member and a vibration damping material, wherein the occurrence of poor appearance when the temperature rises is suppressed. The composite of the present disclosure includes a first metal member, a second metal member, and a vibration damping material excluding fiber-reinforced plastics. The vibration damping material is arranged in at least a part of a portion where the first metal member and the second metal member overlap and is sandwiched between the first metal member and the second metal member, and there is no bonding between at least one of the first metal member and the second metal member and the vibration damping material.Type: ApplicationFiled: April 4, 2022Publication date: June 6, 2024Applicant: NIPPON STEEL CORPORATIONInventors: Kyohei KANO, Masaharu IBARAGI, Noriyuki NEGI
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Patent number: 11597829Abstract: Provided is a resin composition that exhibits satisfactory impregnability into reinforcing fibers, while having rapid curability, and that is suitable for fiber-reinforced composite materials producing molded articles having high heat resistance. A two-pack resin composition for fiber-reinforced composite materials is configured of a base material including an epoxy resin (A) and a (meth)acrylate compound (B) having three or more (meth)acryloyl groups in a molecule, and a curing agent including an amine compound (C) represented by the following general formula (1), a mass ratio of the base material to the curing agent being within the range of from 85:15 to 65:35, Wherein the epoxy resin (A) includes 75% by mass to 100% by mass of a bisphenol A epoxy resin; the base material has a viscosity of 10,000 mPa·s or less; and the curing agent has a viscosity of 800 mPa·s or less. X—(CH2NH2)n (1) (In the formula, X represents an n-valent organic group having 1 to 16 carbon atom; and n represents 2 or 3).Type: GrantFiled: October 12, 2017Date of Patent: March 7, 2023Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Yuichi Taniguchi, Kyohei Kano
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Patent number: 11390708Abstract: The present invention has an object to provide a resin composition for fiber-reinforced composite materials that excels in rapid curability without impairing low viscosity and heat resistance. A two-component curable resin for fiber-reinforced composite materials is provided, which is configured of a base material including an epoxy resin (A) and a curing agent including an amine compound (B) selected from either norbornane diamine or triethylenetetramine and a phenol compound (C), and in which a mass ratio of the base material to the curing agent is within the range of from 90:10 to 70:30, and the phenol compound (C) includes a phenol compound including two or more phenolic hydroxyl groups and is contained at 5% by weight to 35% by weight in the curing agent. A fiber-reinforced composite material is obtained by mixing reinforcing fibers in the resin composition for fiber-reinforced composite materials.Type: GrantFiled: February 25, 2019Date of Patent: July 19, 2022Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Kyohei Kano, Yuichi Taniguchi
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Publication number: 20220025140Abstract: To provide a resin composition that is suitable for use as a matrix resin for a fiber-reinforced composite material, the resin composition exhibiting excellent impregnation properties into reinforcing fibers and rapid curing properties, giving a molded product having high heat resistance when cured, and exhibiting excellent productivity in a short time. A two-pack curable resin composition for a fiber-reinforced composite material, including a main agent that includes an epoxy resin (A) and an ester compound (B) represented by general formula (1) below, and a curing agent that includes an amine compound (C): (R1 and R2 each denote an alkyl group or an aryl group, and R1 and R2 may bond together to form a cyclic structure; or R1 may be an ester-containing group).Type: ApplicationFiled: September 17, 2019Publication date: January 27, 2022Applicant: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventor: Kyohei Kano
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Patent number: 11142610Abstract: Provided is a resin composition that has satisfactory impregnability into reinforcing fibers due to low viscosity and small viscosity increase even in an impregnation process performed for a long time. The resin composition being suitable as a matrix resin for a fiber-reinforced composite material for producing a cured molded article that has toughness and fatigue resistance. The resin composition for a fiber-reinforced composite material includes an epoxy resin, an acid anhydride-based curing agent, an imidazole-based curing accelerator, a radically polymerizable monomer, and a radical polymerization initiator as essential components, has a viscosity at 25° C. that falls within a range of 50 mPa·s to 800 mPa·s as measured by an E-type viscometer, and exhibits a viscosity increase ratio of 200% or less after 8 h at 25° C., wherein 50% by mass or more of the acid anhydride-based curing agent is an alicyclic acid anhydride having no olefinic unsaturated bond.Type: GrantFiled: December 1, 2017Date of Patent: October 12, 2021Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Kyohei Kano, Yuichi Taniguchi
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Publication number: 20210054137Abstract: The present invention has an object to provide a resin composition for fiber-reinforced composite materials that excels in rapid curability without impairing low viscosity and heat resistance. A two-component curable resin for fiber-reinforced composite materials is provided, which is configured of a base material including an epoxy resin (A) and a curing agent including an amine compound (B) selected from either norbornane diamine or triethylenetetramine and a phenol compound (C), and in which a mass ratio of the base material to the curing agent is within the range of from 90:10 to 70:30, and the phenol compound (C) includes a phenol compound including two or more phenolic hydroxyl groups and is contained at 5% by weight to 35% by weight in the curing agent. A fiber-reinforced composite material is obtained by mixing reinforcing fibers in the resin composition for fiber-reinforced composite materials.Type: ApplicationFiled: February 25, 2019Publication date: February 25, 2021Applicant: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Kyohei Kano, Yuichi Taniguchi
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Publication number: 20200239625Abstract: The resin composition is a resin composition for a fiber-reinforced composite material including: a main agent containing an epoxy resin (A) and an acrylate compound (B) having 4 or more acryloyl groups in a molecule thereof; and a curing agent containing an amine compound (C) represented by the following general formula (1), the resin composition being a two-component curable resin composition including the main agent and the curing agent at a mass ratio in the range of from 90:10 to 65:35, wherein the main agent has a viscosity at 25° C. measured with an E-type viscometer of 20,000 mPa·s or less, and wherein the curing agent has a viscosity at 25° C. measured with the E-type viscometer of 800 mPa·s or less: X—(CH2NH2)n ??(1) where X represents an n-valent organic group having 1 to 16 carbon atoms, and “n” represents 2 or 3.Type: ApplicationFiled: September 12, 2018Publication date: July 30, 2020Inventors: Kyohei Kano, Yuichi Taniguchi
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Patent number: 10647826Abstract: Provided is a resin composition to be suitably used as the matrix resin of a fiber-reinforced composite material excellent in fatigue resistance. In the resin composition for a fiber-reinforced composite material, 50 mass % or more of an epoxy resin (A) includes a phenol novolac-type epoxy resin containing a compound represented by the following general formula (1) and a compound represented by the following general formula (2), and in gel permeation chromatography measurement, the phenol novolac-type epoxy resin contains a body corresponding to m=0 at a ratio of 75% by area or more and a body corresponding to m=1 at a ratio of 6% by area or less.Type: GrantFiled: September 30, 2016Date of Patent: May 12, 2020Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Yuichi Taniguchi, Kyohei Kano, Naoki Yokoyama
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Publication number: 20200109233Abstract: Provided is a resin composition that has satisfactory impregnability into reinforcing fibers due to low viscosity and small viscosity increase even in an impregnation process performed for a long time. The resin composition being suitable as a matrix resin for a fiber-reinforced composite material for producing a cured molded article that has toughness and fatigue resistance. The resin composition for a fiber-reinforced composite material includes an epoxy resin, an acid anhydride-based curing agent, an imidazole-based curing accelerator, a radically polymerizable monomer, and a radical polymerization initiator as essential components, has a viscosity at 25° C. that falls within a range of 50 mPa·s to 800 mPa·s as measured by an E-type viscometer, and exhibits a viscosity increase ratio of 200% or less after 8 h at 25° C., wherein 50% by mass or more of the acid anhydride-based curing agent is an alicyclic acid anhydride having no olefinic unsaturated bond.Type: ApplicationFiled: December 1, 2017Publication date: April 9, 2020Inventors: Kyohei Kano, Yuichi Taniguchi
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Publication number: 20190233633Abstract: Provided is a resin composition that exhibits satisfactory impregnability into reinforcing fibers, while having rapid curability, and that is suitable for fiber-reinforced composite materials producing molded articles having high heat resistance. A two-pack resin composition for fiber-reinforced composite materials is configured of a base material including an epoxy resin (A) and a (meth)acrylate compound (B) having three or more (meth) acryloyl groups in a molecule, and a curing agent including an amine compound (C) represented by the following general formula (1), a mass ratio of the base material to the curing agent being within the range of from 35:15 to 65:35, Wherein the epoxy resin (A) includes 75% by mass to 100% by mass of a bisphenol A epoxy resin; the base material has a viscosity of 10,000 mPa·s or less; and the curing agent has a viscosity of 800 mPa·s or less. X—(CH2NH2)n (1) (In the formula, X represents an n-valent organic group having 1 to 16 carbon atom; and n represents 2 or 3).Type: ApplicationFiled: October 12, 2017Publication date: August 1, 2019Applicant: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.Inventors: Yuichi TANIGUCHI, Kyohei KANO
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Publication number: 20190055369Abstract: Provided is a resin composition to be suitably used as the matrix resin of a fiber-reinforced composite material excellent in fatigue resistance. In the resin composition for a fiber-reinforced composite material, 50 mass % or more of an epoxy resin (A) includes a phenol novolac-type epoxy resin containing a compound represented by the following general formula (1) and a compound represented by the following general formula (2), and in gel permeation chromatography measurement, the phenol novolac-type epoxy resin contains a body corresponding to m=0 at a ratio of 75% by area or more and a body corresponding to m=1 at a ratio of 6% by area or less.Type: ApplicationFiled: September 30, 2016Publication date: February 21, 2019Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.Inventors: Yuichi TANIGUCHI, Kyohei KANO, Naoki YOKOYAMA