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

IPC: C08G59/50 ,  C08L63/00 ,  C08J5/24

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：US20250092211A1

公开(公告)日：2025-03-20

申请号：US18728312

申请日：2023-01-10

Applicant: TORAY INDUSTRIES, INC.

Inventor： Yasuyuki OMMURA ,  Masanori HIRANO ,  Kentaro SANO

IPC: C08J5/24 ,  A01K87/00 ,  A63B53/10 ,  C08L63/04

Abstract: An object of the present invention is to provide a prepreg which has both excellent mechanical properties such as strength and elastic modulus and excellent appearance such as low-coloring property, transparency and weather resistance, and which also has an excellent tacking property, as well as to provide a fiber-reinforced composite material, a tubular fiber-reinforced composite material, a golf club shaft and a fishing rod, using the prepreg. The gist of the present invention is a prepreg including reinforcing fibers and a resin composition, wherein the resin composition contains the following component [A] to component [D]: component [A]: epoxy resins; component [B]: dicyandiamide; component [C]: a compound which has a boiling point of 130° C. or higher and a molecular weight m of 50 or more and 250 or less, which does not contain an epoxy group within the molecular structure, and which substantially does not have an epoxy resin curing ability; and component [D]: a phenoxy resin; and wherein the resin composition satisfies the following requirements (1) to (3): (1): the resin composition contains from 10 to 40 parts by mass of an isocyanurate type epoxy resin [A1], as the component [A], with respect to 100 parts by mass of the total epoxy resin: (2): the resin composition contains from 10 to 50 parts by mass of a novolac type epoxy resin [A2], as the component [A], with respect to 100 parts by mass of the total epoxy resin; and (3): the resin composition contains 10 parts by mass or less of a glycidylamine type epoxy resin [A3], as the component [A], with respect to 100 parts by mass of the total epoxy resin.

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

IPC: C08L63/00 ,  C08G59/50 ,  C08J5/24 ,  C08K5/521

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：US20160340485A1

公开(公告)日：2016-11-24

申请号：US15110168

申请日：2015-02-17

Applicant: TORAY INDUSTRIES, INC.

Inventor： Keiichiro NOMURA ,  Nobuhiro MORIOKA ,  Kentaro SANO ,  Noriyuki HIRANO ,  Sadayuki KOBAYASHI

IPC: C08J5/24 ,  C08J5/04 ,  C08L63/00

CPC classification number: C08J5/24 ,  C08G83/007 ,  C08J5/042 ,  C08J2363/00 ,  C08J2400/21 ,  C08J2405/16 ,  C08L63/00 ,  C08L2205/03 ,  C08L5/16

Abstract: There is provided a cured product of an epoxy resin composition, in which the compounding composition and the phase-separated structure of the epoxy resin composition are controlled so that the balance between rigidity and toughness of the cured product is superior compared with those of cured products of conventional epoxy resin compositions. A cured product of an epoxy resin composition, which has both superior rigidity and superior toughness compared with conventional materials can be produced by curing an epoxy resin composition comprising an epoxy resin, a polyrotaxane having graft-chain-modified cyclic molecules and a curing agent for the epoxy resin.

Abstract translation: 提供环氧树脂组合物的固化产物，其中控制环氧树脂组合物的配混组合物和相分离结构，使得固化产物的刚性与韧性之间的平衡比固化产物的平衡 的常规环氧树脂组合物。 通过将包含环氧树脂，具有接枝链改性环状分子的聚轮烷和固化剂的环氧树脂组合物固化，可以制备环氧树脂组合物与常规材料相比具有优异的刚性和优异的韧性的固化产物 环氧树脂。

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

IPC: C08L63/00 ,  C08G59/50 ,  C08J5/24 ,  C08J5/04

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.

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

IPC: C08G59/24 ,  C08G59/50 ,  C08K5/053 ,  C08K5/07 ,  C08K5/20 ,  C08J5/24 ,  C08J5/04

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

IPC: C08J5/24 ,  C08G59/50

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.