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公开(公告)号：US11492446B2
公开(公告)日：2022-11-08
申请号：US16498227
申请日：2018-03-22
Applicant: KANEKA CORPORATION , JAPAN AEROSPACE EXPLORATION AGENCY
Inventor： Yoshio Furukawa , Takefumi Furuta , Takeshi Chiba , Rikio Yokota , Yuichi Ishida
Abstract: An object of the present invention is to reduce or eliminate a defect (e.g., a void) by achieving (i) a semipreg and a prepreg each of which allows a reduction in residual volatile component and (ii) methods for producing the semipreg and the prepreg, respectively, and consequently to achieve (iii) a fiber-reinforced composite material which has high heat resistance and superior mechanical strength and a (iv) a method for producing the fiber-reinforced composite material. The present invention attains the above object by providing, for example, a semipreg containing: powders of an imide oligomer; and reinforcement fibers, the imide oligomer being represented by a specific general formula (1).
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公开(公告)号：US20210221113A1
公开(公告)日：2021-07-22
申请号：US17221592
申请日：2021-04-02
Applicant: KANEKA CORPORATION
Inventor： Yoshio Furukawa , Yutaka Kaneda
Abstract: A layered body which allows a reduction in residual volatile component and a method for producing the layered body. A reinforcing fiber composite material which has high heat resistance and superior mechanical strength and a method for producing the reinforcing fiber composite material. A method includes fusing together a plurality of layers each of which contains: a powder of an imide oligomer represented by a specific general formula; and reinforcement fibers.
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公开(公告)号：US20140371350A1
公开(公告)日：2014-12-18
申请号：US14375662
申请日：2013-02-05
Applicant: KANEKA CORPORATION
Inventor： Shuji Taketani , Yoshio Furukawa
CPC classification number: C08L9/10 , C08F2/26 , C08F279/02 , C08G59/02 , C08G59/3218 , C08G59/3227 , C08G59/504 , C08L51/04 , C08L63/00 , C08F212/08 , C08F220/44 , C08F220/18 , C08F220/32 , C08F2220/325 , C08L81/06 , C08F218/08 , C08F220/14
Abstract: Provided are a toughness modifier for a curable resin which has good dispersibility in a curable resin containing a thermoplastic resin as well as in a cured product formed from a curable resin composition, and also has an excellent toughness-improving effect; and a curable resin composition containing the toughness modifier. The toughness modifier for a curable resin (D) is obtained by emulsion-polymerizing 5 to 50% by mass of a vinyl monomer (B) in the presence of 50 to 95% by mass of a rubber polymer (A) latex (calculated as the rubber polymer component) using 0.5 to 15 parts by mass of a nonionic reactive surfactant (C) (relative to 100 parts by mass of a total of (A) and (B)).
Abstract translation: 提供一种在含有热塑性树脂的固化性树脂以及由固化性树脂组合物形成的固化物中具有良好的分散性的固化性树脂的韧性改性剂，还具有优异的韧性提高效果; 和含有韧性改性剂的固化性树脂组合物。 可固化树脂（D）的韧性改性剂通过在50〜95质量％的橡胶聚合物（A）胶乳的存在下，以5〜50质量％的乙烯基单体（B）进行乳液聚合而得到（计算为 橡胶聚合物成分），使用0.5〜15质量份非离子型反应性表面活性剂（C）（相对于（A）和（B）的总计100质量份）。
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4.发明申请公开(公告)号：US20230042415A1
公开(公告)日：2023-02-09
申请号：US17955914
申请日：2022-09-29
Applicant: KANEKA CORPORATION , JAPAN AEROSPACE EXPLORATION AGENCY
Inventor： Takefumi Furuta , Yoshio Furukawa , Rikio Yokota , Yuichi Ishida
IPC: C08G73/10 , C08J5/24 , C09D179/08
Abstract: The present invention provides an amide acid oligomer which has specific composition and which is capable of providing a cured product having excellent physical properties, in particular, an excellent glass transition temperature, etc.
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公开(公告)号：US12049545B2
公开(公告)日：2024-07-30
申请号：US17221592
申请日：2021-04-02
Applicant: KANEKA CORPORATION
Inventor： Yoshio Furukawa , Yutaka Kaneda
CPC classification number: C08J5/041 , B32B5/024 , B32B5/10 , B32B5/263 , B32B27/281 , C08J5/042 , C08J5/243 , B32B2250/05 , B32B2260/023 , B32B2260/046 , B32B2262/106 , B32B2307/306 , B32B2605/00 , B32B2605/18 , C08J2379/08
Abstract: A layered body which allows a reduction in residual volatile component and a method for producing the layered body. A reinforcing fiber composite material which has high heat resistance and superior mechanical strength and a method for producing the reinforcing fiber composite material. A method includes fusing together a plurality of layers each of which contains: a powder of an imide oligomer represented by a specific general formula; and reinforcement fibers.
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Patent Agency Ranking
公开(公告)号：US20250092169A1
公开(公告)日：2025-03-20
申请号：US18968866
申请日：2024-12-04
Applicant: KANEKA CORPORATION
Inventor： Takefumi Furuta , Yoshio Furukawa
IPC: C08F20/14
Abstract: A methacrylic resin includes a structural unit derived from methyl methacrylate in a proportion of 98% by mass or more. The methacrylic resin has a weight average molecular weight (Mw) as measured by gel permeation chromatography (GPC) of 400,000 or more, a triad syndiotacticity of 55% to 70% inclusive, a 5% weight loss temperature of 300° C. or higher, and a proportion of terminal double bonds to a structural unit derived from methyl methacrylate of less than 0.015 mol %. A method for producing the methacrylic resin is provided. A resin composition and a dope including the methacrylic resin, a resin film including the methacrylic resin, and a polarizing plate and a display device in which the resin film is used, are provided.
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公开(公告)号：US20240384031A1
公开(公告)日：2024-11-21
申请号：US18689992
申请日：2022-09-07
Applicant: KANEKA CORPORATION
Inventor： Takefumi Furuta , Mari Yoshitake , Yoshio Furukawa
Abstract: An object of the present invention is to provide a benzoxazine composition the cured product of which has excellent self-repairability. A benzoxazine composition in accordance with an embodiment of the present invention includes: a product of reaction between a benzoxazine compound and a compound (ii) which contains at least two phenolic hydroxyl groups, and/or a mixture of the compounds (i) and (ii); and a specific crosslinking agent, so that the above problem is solved.
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8.发明公开公开(公告)号：US20230193075A1
公开(公告)日：2023-06-22
申请号：US17916496
申请日：2021-03-05
Applicant: KANEKA CORPORATION , JAPAN AEROSPACE EXPLORATION AGENCY
Inventor： Takefumi Furuta , Yoshio Furukawa , Rikio Yokota , Yuichi Ishida
IPC: C09D177/00 , C09D7/20 , C08J5/24 , C08J5/04
CPC classification number: C09D177/00 , C08J5/04 , C08J5/24 , C09D7/20
Abstract: The present invention provides an amide acid oligomer which has specific composition and which is capable of providing a cured product having excellent physical properties, in particular, an excellent glass transition temperature, etc.
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公开(公告)号：US20250092172A1
公开(公告)日：2025-03-20
申请号：US18966567
申请日：2024-12-03
Applicant: KANEKA CORPORATION
Inventor： Takefumi Furuta , Yoshio Furukawa
IPC: C08F120/14 , C08J5/18 , G02B1/14 , G02B5/30
Abstract: A methacrylic resin includes structural units derived from methyl methacrylate at a ratio of 98% by mass or more, has a triad syndiotacticity of 55% or more, and contains a terminal structure that is derived from a polymerization initiator and is represented by formula (1). The ratio of terminal double bonds to the structural units derived from methyl methacrylate is less than 0.020 mol %. A method for producing the methacrylic resin is provided. In formula (1), each of R1, R2 and R3 independently represents an alkyl group, a substituted alkyl group, an ester group or an amide group, provided that at least one of R1, R2 and R3 represents an ester group or an amide group.
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公开(公告)号：US20210340327A1
公开(公告)日：2021-11-04
申请号：US17375685
申请日：2021-07-14
Applicant: KANEKA CORPORATION
Inventor： Takefumi Furuta , Yoshio Furukawa , Rikio Yokota , Yuki Kubota , Yuichi Ishida
IPC: C08G73/12 , C08J5/24 , C09D179/08
Abstract: In order to provide an imide oligomer or the like which can give a cured product exhibiting excellent thermal oxidative stability, an imide oligomer is obtained by reacting together an aromatic tetracarboxylic acid component, an aromatic diamine component, and a terminal capping agent. The imide oligomer contains, in a specified proportion: a compound containing a phenylethynyl group; and a compound containing no carbon-carbon unsaturated bond capable of an addition reaction. One or each of the aromatic tetracarboxylic acid component and the aromatic diamine component contains a component having an asymmetrical and non-planar structure.
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