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公开(公告)号：US20230037333A1
公开(公告)日：2023-02-09
申请号：US17772574
申请日：2020-11-05
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Kentaro SANO , Junko KAWASAKI
Abstract: An object of the present invention is to provide an epoxy resin composition that can be preferably used for prepreg and fiber reinforced composite material applications and is excellent in elastic modulus, strength, and pot life. The present invention is the epoxy resin composition including the following components [A] to [C] and satisfying the following conditions (1) to (4):
[A]: epoxy resin [B]: aromatic diamine [C]: a compound having a boiling point of 130° C. or more and a molecular weight m of 50 or more and 250 or less, the compound having no epoxy group in the molecule and having substantially no curing ability of an epoxy resin (1): the ratio H/E between the amount by mole, E, of the epoxy group in the component [A] and the amount by mole, H, of active hydrogen in the component [B] is 0.50 or more and 1.30 or less. (2): at least a part of the component [C] satisfies 0.10 or more and 0.60 or less in a ratio m/M of a molecular weight m thereof to a theoretical molecular weight between crosslinking points, M, of a cured product of the epoxy resin composition. (3): the ratio C/E of the amount by mole, E, for epoxy groups of the component [A] to the amount by mole, C, of the component [C] satisfying the condition (2) is 0.01 or more and 0.20 or less; and (4): the viscosity at 70° C. for 2 hours is 5.0 times or less the initial viscosity at 70° C.-
公开(公告)号：US20220380561A1
公开(公告)日：2022-12-01
申请号：US17773706
申请日：2020-11-05
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Kentaro SANO , Junko KAWASAKI
Abstract: An object of the present invention is to provide an epoxy resin composition that can be preferably used for prepreg and fiber reinforced composite material applications, has high Tg, and is excellent in elastic modulus and strength. The present invention is the epoxy resin composition including the following components [A] to [C] and satisfying the following conditions (1) to (2): [A]: epoxy resin [B]: polyamine curing agent, and [C]: a compound having a boiling point of 130° C. or more and a molecular weight m of 50 or more and 250 or less, the compound having no epoxy group in the molecule and having substantially no curing ability of an epoxy resin, (1): at least a part of the component [C] satisfies that the sum of the polar component and the hydrogen bond component in the Hansen solubility parameters is 10.0 or less, (2): the ratio C/E of the amount by mole, E, for epoxy groups of the component [A] to the amount by mole, C, of the component [C] satisfying the condition (1) is 0.01 or more and 0.20 or less.
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公开(公告)号：US20220411626A1
公开(公告)日：2022-12-29
申请号：US17772581
申请日：2020-11-05
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Kentaro SANO , Junko KAWASAKI
Abstract: An object of the present invention is to provide an epoxy resin composition that can be preferably used for prepreg and fiber reinforced composite material applications and is excellent in elastic modulus, strength, and pot life.
The present invention is the epoxy resin composition including the following components [A] to [C] and satisfying the following conditions (1) to (3): [A]: epoxy resin [B]: polyamine curing agent, and [C]: a compound having a boiling point of 130° C. or more and a molecular weight m of 50 or more and 250 or less, the compound having no epoxy group in the molecule and having substantially no curing ability of an epoxy resin, and (1): at least a part of the component [C] has two or more alcoholic hydroxyl groups in the molecule. (2): the ratio C/E of the amount by mole, E, for epoxy groups of the component [A] to the amount by mole, C, of the component [C] satisfying the condition (1) is 0.01 or more and 0.20 or less. (3): the viscosity at 70° C. for 2 hours is 5.0 times or less the initial viscosity at 70° C.-
Patent Agency Ranking
公开(公告)号：US20200010633A1
公开(公告)日：2020-01-09
申请号：US16491050
申请日：2018-03-05
Applicant: TORAY INDUSTRIES, INC.
Inventor： Junichi AOKI , Koji FURUKAWA , Atsuhito ARAI , Jun MISUMI , Hiroaki SAKATA , Takashi OCHI
Abstract: 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：US20220411572A1
公开(公告)日：2022-12-29
申请号：US17773694
申请日：2020-11-05
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Kentaro SANO , Junko KAWASAKI
Abstract: An object of the present invention is to provide an epoxy resin composition excellent in elastic modulus and strength, and a prepreg and a fiber reinforced composite material with the epoxy resin composition. The present invention is the epoxy resin composition including the following components [A] to [C] and satisfying the following conditions (1) to (3): [A]: epoxy resin [B]: aromatic diamine [C]: a compound having a boiling point of 130° C. or more and a molecular weight m of 50 or more and 250 or less, the compound having no epoxy group in the molecule and having substantially no curing ability of an epoxy resin (1): at least a part of the component [C] satisfies that the sum of the polar component and the hydrogen bond component in the Hansen solubility parameters is 10.0 or more.
(2): at least a part of the component [C] satisfies that the Hansen solubility parameter distance L to the component [A] is 20.0 or less.
(3): the ratio H/E between the amount by mole, E, of the epoxy group of the component [A] and the amount by mole, C, of the component [C] satisfying both the condition (1) and the condition (2) is 0.01 or more and 0.20 or less.
(4): the viscosity at 70° C. for 2 hours is 5.0 times or less the initial viscosity at 70° C.-
公开(公告)号：US20200056005A1
公开(公告)日：2020-02-20
申请号：US16496219
申请日：2018-03-16
Applicant: TORAY INDUSTRIES, INC.
Inventor： Atsuhito ARAI , Koji FURUKAWA , Atsuki SUGIMOTO , Masahiro MINO , Mayumi MIHARA
Abstract: A prepreg containing the following constituent elements [A] to [C], wherein a resin composition containing the constituent elements [B] and [C] has a higher-order structure derived from a diffraction angle 20 between 1.0° and 6.0° observed with X-ray diffraction after curing: [A]: carbon fibers [B]: epoxy resin [C]: curing agent of [B].
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公开(公告)号：US20240309200A1
公开(公告)日：2024-09-19
申请号：US18280059
申请日：2022-02-03
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Kentaro SANO , Junko KAWASAKI
CPC classification number: C08L63/00 , C08G59/504 , C08J5/24 , C08K5/521 , C08J2363/00 , C08J2463/00 , C08L2205/025
Abstract: An object of the present invention is to provide an epoxy resin composition which can be suitably used in prepreg and fiber-reinforced composite material applications, and which has an excellent strength, elastic modulus, elastic modulus under hot wet conditions and heat resistance after moisture absorption. The gist of the present invention is an epoxy resin composition including the following components [A], [B] and [C]:
[A]: an epoxy resin,
[B]: an amine curing agent, and
[C]: a phosphate ester compound having a molecular weight of 250 or less; wherein the epoxy resin composition satisfies the following requirements (1) and (2):
(1): the epoxy resin composition includes 1 part by mass or more and 15 parts by mass or less of the component [C] with respect to 100 parts by mass of the component [A]; and
(2): the component [A] has an average epoxy equivalent of 160 g/eq or less.-
公开(公告)号：US20210087362A1
公开(公告)日：2021-03-25
申请号：US16633904
申请日：2018-05-28
Applicant: TORAY INDUSTRIES, INC.
Inventor： Koji FURUKAWA , Atsuhito ARAI , Atsuki SUGIMOTO , Masahiro MINO , Mayumi MIHARA
IPC: C08K9/04 , C08K7/06 , C08K5/1515 , C08K3/04
Abstract: A prepreg includes following constituents [A] to [C] and satisfies following conditions (I) and (II): [A]: a carbon fiber; [B]: an epoxy resin; and [C]: a hardener for [B], and (I) a surface oxygen concentration O/C of [A] measured by X-ray photoelectron spectroscopy is 0.10 or more; and (II) a cured product obtained by curing [B] and [C] includes a resin region having molecular anisotropy exhibiting interference fringes in polarizing microscope observation in a crossed Nicol state.
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