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公开(公告)号：US20230357561A1
公开(公告)日：2023-11-09
申请号：US18206386
申请日：2023-06-06
发明人： Hiroshi Kobayashi , Taiki Maeyama , Hiroaki Sakata
CPC分类号： C08L63/00 , C08J5/243 , C08J2363/00 , C08J2363/02 , C08J2463/00 , C08J2463/02 , C08J2481/06 , C08L2205/025 , C08L2205/03 , C08L2205/035
摘要： A prepreg is provided that has excellent processability and handleability and that can be processed into a cured product with high heat resistance. Also provided is a method to produce such a prepreg in an industrially advantageous way without being restricted by the types and contents of the matrix resin components used. The prepreg includes at least components [A] to [D] as given below and a preliminary reaction product that is a reaction product of the component [B] and the component [C], at least one surface resin in the prepreg having a storage elastic modulus G′ in the range of 1.0×103 to 2.0×108 Pa as measured at a temperature of 40° C. and an angular frequency in the range of 0.06 to 314 rad/s: [A] carbon fiber, [B] epoxy resin comprising a m- or p-aminophenol epoxy resin [b1] and either a glycidyl ether epoxy resin or a glycidyl amine epoxy resin [b2] that has two or more glycidyl groups in a molecule, [C] curing agent, and [D] thermoplastic resin.
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公开(公告)号：US11441027B2
公开(公告)日：2022-09-13
申请号：US16755945
申请日：2018-09-28
发明人： Akihiko Ito , Hiroaki Sakata
IPC分类号： C08G59/50 , C08G59/38 , C08L63/00 , C08J5/24 , C08G59/24 , C08G59/28 , C08G59/32 , C08G59/40 , C08J5/04 , C08K5/5397 , C08L81/06
摘要： The purpose of the present invention is to provide an epoxy resin composition which has excellent viscosity stability, and when cured, can provide a resin cured product which has high flame retardancy and excellent mechanical properties, and a prepreg and fiber-reinforced composite material using the epoxy resin composition. An embodiment of the epoxy resin composition according to the present invention which achieves the purpose contains all components [A]-[C]. [A]: A reactive diluent having a specific structure and a viscosity of 2 Pa·s or less at 25° C. [B]: An epoxy resin having three of more functional groups. [C]: An amine-based curing agent having a specific structure.
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公开(公告)号：US09982086B2
公开(公告)日：2018-05-29
申请号：US14759621
申请日：2014-01-07
发明人： Johnathan C Hughes , Hiroaki Sakata
IPC分类号： B32B27/38 , B32B27/26 , B32B27/04 , C08J5/24 , C08G59/38 , C08G59/40 , C08L63/00 , C08G59/14 , C08G59/32 , C08G59/68
CPC分类号： C08G59/1477 , C08G59/3227 , C08G59/38 , C08G59/4021 , C08G59/686 , C08J5/24 , C08J2363/00 , C08K3/04 , C08K7/02 , C08L63/00
摘要： An embodiment relates to a resin composition containing a tetraglycidyl amine; a bisphenol epoxy; a dicyandiamide; and an aromatic urea; wherein the tetraglycidyl amine has a EEW of 110 g/eq to 140 g/eq and is an amount of 30 to 60 PHR per 100 PHR of total epoxy resin in the resin composition; wherein the resin composition has a Tg of at least 160° C. when cured at 143° C. for 3 min and also maintains a Tg of greater than 160° C. when cured at 177 C for 1 min or longer.
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公开(公告)号：US20180051125A1
公开(公告)日：2018-02-22
申请号：US15558087
申请日：2016-03-16
发明人： Junichi Aoki , Atsuhito Arai , Hiroaki Sakata , Takashi Ochi
CPC分类号： C08G59/245 , C08G59/20 , C08G59/3227 , C08G59/38 , C08G59/5033 , C08G73/026 , C08G73/1071 , C08G75/23 , C08J5/24 , C08K3/046 , C08L63/00 , C08L2205/035 , C08L81/06 , C08L79/08
摘要： Provided is an epoxy resin composition for giving a carbon fiber-reinforced composite material that simultaneously achieves tensile strength and compressive strength. An epoxy resin composition containing at least the following constituent elements [A]-[D] wherein the epoxy resin composition contains 5-50 mass % of constituent element [A] and 20-95 mass % of constituent element [B] relative to 100 mass % of total epoxy resin weight. [A]: at least one epoxy resin selected from 1,2-bis(glycidyloxy)benzene, 1,3-bis(glycidyloxy)benzene, 1,4-bis(glycidyloxy)benzene, derivatives of these, and epoxy resins having a structure represented by general formula [1] (in general formula [1], at least one of R1-R5 and at least one of R6-R10 is a glycidyl ether group, and the other R1-R10 represent any of a hydrogen atom, halogen atom, or aliphatic hydrocarbon group having four or fewer carbon atoms.); [B]: glycidylamine epoxy resin having three or more glycidyl groups per molecule; [C]: thermoplastic resin soluble in epoxy resin; [D]: epoxy resin curing agent.
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5.发明申请公开(公告)号：US20170362427A1
公开(公告)日：2017-12-21
申请号：US15527251
申请日：2015-11-06
发明人： Koji Furukawa , Atsuhito Arai , Hiroaki Sakata
CPC分类号： C08L63/00 , C08G59/4035 , C08G59/5033 , C08G59/56 , C08J5/04 , C08J5/24 , C08J2363/00 , C08J2481/06 , C08L2201/08 , C08L81/06
摘要： A epoxy resin composition includes a given epoxy resin [A], an aromatic amine compound [B], an organic acid hydrazide compound [C] having a structural formula represented by general formula (I) or (II) (X is a structure selected from among monocyclic and polycyclic aromatic ring structures, polycyclic aromatic ring structures, and aromatic heterocyclic structures and optionally has, as a substituent, any of C4 or lower alkyl groups, a hydroxy group, and an amino group), and a thermoplastic resin [D], wherein the amount of the constituent element [C] is 1-25 parts by mass per 100 parts by mass of the constituent element [A], the epoxy resin composition, after having been held at 80° C. for 2 hours, having a viscosity which is up to 2.0 times the initial viscosity at 80° C.
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公开(公告)号：US11034810B2
公开(公告)日：2021-06-15
申请号：US16491050
申请日：2018-03-05
发明人： Junichi Aoki , Koji Furukawa , Atsuhito Arai , Jun Misumi , Hiroaki Sakata , Takashi Ochi
摘要： An object of the present invention is to provide an epoxy resin composition capable of providing a carbon fiber-reinforced composite material that is excellent in moldability, heat resistance, and mechanical properties such as tensile strength and compression strength, and a prepreg. The present invention provides an epoxy resin composition containing at least components [A] to [D] shown below: [A]: an epoxy resin having a xylene group; [B]: a glycidyl amine epoxy resin having three or more glycidyl groups in a molecule; [C]: a thermoplastic resin; and [D]: an aromatic polyamine, the epoxy resin composition containing 10 to 80 parts by mass of the component [A] and 20 to 90 parts by mass of the component [B] based on 100 parts by mass in total of epoxy resins, and also 1 to 25 parts by mass of the component [C] based on 100 parts by mass in total of epoxy resins.
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公开(公告)号：US10344132B2
公开(公告)日：2019-07-09
申请号：US16072361
申请日：2017-01-06
发明人： Jun Misumi , Hiroaki Sakata
摘要： Provided are an epoxy resin composition for manufacturing a fiber reinforced composite material having excellent curability allowing for curing in a short time, and excellent storage stability and heat resistance, and a prepreg and a fiber reinforced composite material using the same. The epoxy resin composition includes at least an epoxy resin [A], a curing agent [B] having an exothermic onset temperature higher than the exothermic onset temperature of a component [C], as measured by a differential scanning calorimeter, and the component [C] contains a compound represented by a particular formula (a), and a prepreg and a fiber reinforced composite material using the same.
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公开(公告)号：US20190031847A1
公开(公告)日：2019-01-31
申请号：US16072361
申请日：2017-01-06
发明人： Jun Misumi , Hiroaki Sakata
CPC分类号： C08J5/24 , B29B11/14 , C08G59/3227 , C08G59/38 , C08G59/5033 , C08G59/504 , C08J5/042 , C08J5/043 , C08J2363/00 , C08J2463/02 , C08J2481/06 , C08L63/00 , C08L81/06
摘要： Provided are an epoxy resin composition for manufacturing a fiber reinforced composite material having excellent curability allowing for curing in a short time, and excellent storage stability and heat resistance, and a prepreg and a fiber reinforced composite material using the same. The epoxy resin composition includes at least an epoxy resin [A], a curing agent [B] having an exothermic onset temperature higher than the exothermic onset temperature of a component [C], as measured by a differential scanning calorimeter, and the compound [C] represented by formula (a), in which the compounding ratio for the components satisfies equations (1) and (2), and a prepreg and a fiber reinforced composite material using the same. Equation (1): 0.5 (moles of active hydrogen included in component [B]+moles of active hydrogen included in component [C])/moles of epoxy groups in component [A]≤1.5; Equation (2) 0.02≤moles of component [C]/moles of component [B]≤5.0. In formula (a), X is chosen from C═O, S═O and O═P—OH, and R1 to R4 are at least one atom or group selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group having 1 to 4 carbon atoms, an alicyclic hydrocarbon group having 4 or fewer carbon atoms, and a halogen atom.
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公开(公告)号：US20180134837A1
公开(公告)日：2018-05-17
申请号：US15577607
申请日：2016-06-15
发明人： Koji Furukawa , Atsuhito Arai , Hiroaki Sakata
CPC分类号： C08G59/10 , C08G59/06 , C08G59/50 , C08G59/504 , C08J5/24 , C08J2363/00 , C08L63/00 , C08L2201/08 , C08L2205/025
摘要： Provided is an epoxy resin composition including the following component [A]: a tri- or more functional binaphthalene epoxy resin represented by the following general formula (A-1) and component [B]: an aromatic amine compound, in which the glass transition temperature of a cured product, which is obtained by curing the epoxy resin composition at 180° C. for 2 hours, after immersing in boiling water at 1 atm for 48 hours is 180° C. or more. An epoxy resin composition and a prepreg which can form a fiber-reinforced composite material excellent in heat resistance under high humidity are provided.
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公开(公告)号：US20240051281A1
公开(公告)日：2024-02-15
申请号：US18269809
申请日：2022-01-13
发明人： Yuki Sado , Hiroaki Sakata
IPC分类号： B32B27/20 , C08G59/28 , C08G59/32 , C08G59/50 , C08G75/23 , C08K3/02 , C08K7/06 , C08J5/24 , B32B27/08 , B32B27/28 , B32B27/38
CPC分类号： B32B27/20 , C08G59/28 , C08G59/3227 , C08G59/5033 , C08G75/23 , C08K3/02 , C08K7/06 , C08J5/243 , C08J5/249 , B32B27/08 , B32B27/286 , B32B27/38 , C08K2003/026 , C08K2201/003 , C08J2363/00 , C08J2381/06 , B32B2260/046 , B32B2305/076 , B32B2305/188 , B32B2307/3065 , B32B2307/732 , B32B2363/00
摘要： A lightweight laminate capable of maintaining mechanical properties while exhibiting excellent flame retardancy, a method for producing the laminate, and a prepreg are described, where the laminate includes fibers; a matrix resin; and a flame-retardant filler and satisfies 0.01
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