公开(公告)号：US20210371613A1

公开(公告)日：2021-12-02

申请号：US16980988

申请日：2019-02-27

Applicant: Toray Industries, Inc.

Inventor： Koji Furukawa ,  Junko Kawasaki ,  Soichi Yoshizaki ,  Kentaro Sano ,  Toshiya Kamae

IPC: C08J5/24 ,  C08G59/40 ,  C08G59/32 ,  C08K5/06 ,  C08L63/00

Abstract: A prepreg having excellent tackiness as well as excellent resin strength after curing and strength in the non-fiber direction is described; and a fiber-reinforced composite material using the prepreg, where the prepreg is composed of reinforcing fibers and a resin composition which includes [A] an epoxy resin, [B] a dicyanamide and [C] a compound having a melting point of 130° C. or lower and a solubility parameter whose difference from the solubility parameter of [B] is 8 or less.

公开(公告)号：US20210189078A1

公开(公告)日：2021-06-24

申请号：US16757839

申请日：2018-11-27

Applicant: Toray Industries, Inc.

Inventor： Kentaro Sano ,  Taiki Kuroda ,  Hiroyuki Uchida ,  Toshiya Kamae

IPC: C08J5/24 ,  C08J5/04 ,  C08G59/40

Abstract: Disclosed is a prepreg comprising an epoxy resin composition containing [A] an epoxy resin and [B] a curing agent, and a reinforcing fiber, wherein the epoxy resin composition satisfies: (a) [A1] an epoxy resin represented by the general formula (I) is contained as the epoxy resin [A], and [A1′] an epoxy resin satisfying: n≥2 among the component [A1]; wherein, R1, R2 and R3 each independently represent a hydrogen atom or a methyl group, and n represents an integer of 1 or more; (b) the entire epoxy resin has an average epoxy equivalent of 165 to 265 g/eq; (c) a water absorption coefficient at 85° C. and 95% RH for 2 hours is 3.0% by mass or less based on 100% by mass of the epoxy resin composition; (d) [B1] an aromatic urea as [B] a curing agent; and (e) the content of [B2] dicyandiamide is 0.5 part by mass or less based on 100 parts by mass of the entire epoxy resin.

公开(公告)号：US20200165378A1

公开(公告)日：2020-05-28

申请号：US16611351

申请日：2018-04-05

Applicant: Toray Industries, Inc.

Inventor： Kentaro Sano ,  Taiki Kuroda ,  Ayumi Mori ,  Toshiya Kamae

IPC: C08G59/50 ,  C08G59/24 ,  C08L63/00 ,  C08G59/32 ,  C08J5/24

Abstract: Provided is a fiber-reinforced composite material exhibiting high heat resistance and excellent appearance quality. is the composite material is based on an epoxy resin composition which contains constituents [A], [B], and [C] and satisfies conditions (i) and (ii): [A] a tri- or higher functional epoxy resin; [B] an aromatic amine; [C] an imidazole compound; 0.20≤b/a≤0.60; and  (i) 0.002≤c/a≤0.014;  (ii) wherein a (mol) denotes the number of epoxy groups in 100 g of the epoxy resin composition, b (mol) denotes the number of active hydrogens contained in the constituent [B], and c (mol) denotes the number of imidazole rings contained in the constituent [C]).

公开(公告)号：US20190211201A1

公开(公告)日：2019-07-11

申请号：US16310562

申请日：2017-06-23

Applicant: Toray Industries, Inc.

Inventor： Kentaro Sano ,  Taiki Kuroda ,  Reo Takaiwa ,  Noriyuki Hirano

IPC: C08L63/00 ,  C08J5/24

CPC classification number: C08L63/00 ,  C08G59/38 ,  C08J5/24 ,  C08J2363/02 ,  C08J2463/00 ,  C08J2463/06 ,  C08K5/16 ,  C08K5/3445 ,  C08K5/55 ,  C08L63/04 ,  C08L2205/025 ,  C08L2205/03

Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. The epoxy resin composition includes an epoxy resin as component [A], an aromatic urea [B1] and/or an imidazole compound [B2] as component [B], and a borate ester compound as component [C], containing dicyandiamide in the amount of 0.5 part by mass or less relative to the total quantity of epoxy resins which accounts for 100 parts by mass, wherein the epoxy resin composition meets certain sets of further requirements with respect to its composition.

公开(公告)号：US20190177470A1

公开(公告)日：2019-06-13

申请号：US16310852

申请日：2017-06-23

Applicant: Toray Industries, Inc.

Inventor： Kentaro Sano ,  Taiki Kuroda ,  Reo Takaiwa ,  Noriyuki Hirano

IPC: C08G59/38 ,  C08G59/50 ,  C08G59/40 ,  C08J5/24 ,  C08K5/09 ,  C08K5/3445 ,  C08L63/00

Abstract: The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. It provides an epoxy resin composition that includes an epoxy resin as component [A] and an imidazole compound as component [B] and meets the undermentioned conditions (a) to (d): (a) it contains an isocyanurate type epoxy resin [A1] as component [A] in an amount of 10 to 40 parts by mass relative to the total quantity of epoxy resins which represents 100 parts by mass, (b) it contains a bisphenol type epoxy resin [A2] as a component [A] in an amount of 40 to 90 parts by mass relative to the total quantity of epoxy resins which represents 100 parts by mass, (c) resin [A2] has an average epoxy equivalent weight of 220 to 500 g/eq, and (d) the content of component [B] is such that the ratio of the number of imidazole groups to the total number of epoxy groups in the epoxy resins is 0.01 to 0.06.

公开(公告)号：US20180251617A1

公开(公告)日：2018-09-06

申请号：US15760485

申请日：2016-07-20

Applicant: TORAY INDUSTRIES, INC.

Inventor： Reo Takaiwa ,  Junko Kawasaki ,  Kentaro Sano ,  Noriyuki Hirano

IPC: C08J5/24 ,  C08L63/00 ,  C08L81/06 ,  C08K5/21 ,  C08K5/31 ,  C08K5/41 ,  B32B5/24 ,  B32B27/38

CPC classification number: C08J5/24 ,  B32B5/24 ,  B32B27/38 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2262/106 ,  C08G59/3227 ,  C08G59/3245 ,  C08G59/4021 ,  C08G59/50 ,  C08G59/5033 ,  C08G59/60 ,  C08J2363/00 ,  C08K5/21 ,  C08K5/31 ,  C08K5/41 ,  C08L63/00 ,  C08L63/06 ,  C08L81/06 ,  C08L2205/02

Abstract: An epoxy resin composition includes: an [A] epoxy resin at least comprising an [A1] isocyanurate epoxy resin and an [A2] glycidyl amine epoxy resin; [B] dicyandiamide; and [C] diaminodiphenyl sulfone, wherein (1) an average epoxy equivalent of the [A] epoxy resin is 115 g/eq to 150 g/eq, and (2) an amount of the component [C] added is an amount of 0.05 equivalent to 0.3 equivalent relative to epoxy groups in the [A] epoxy resin in terms of active hydrogen groups.

公开(公告)号：US10017613B2

公开(公告)日：2018-07-10

申请号：US15032145

申请日：2014-10-24

Applicant: Toray Industries, Inc.

Inventor： Naokichi Imai ,  Kentaro Sano ,  Keisuke Inose

IPC: B29C70/48 ,  C08J5/04 ,  C08J5/06 ,  B29B7/48 ,  B29B7/82 ,  B29B7/86 ,  B29B7/90 ,  B29B9/02 ,  B29C43/22 ,  B29C45/00 ,  C08K7/06 ,  B29K81/00 ,  B29K105/08

CPC classification number: C08J5/042 ,  B29B7/002 ,  B29B7/482 ,  B29B7/489 ,  B29B7/82 ,  B29B7/86 ,  B29B7/90 ,  B29B9/02 ,  B29C43/22 ,  B29C45/0005 ,  B29K2081/04 ,  B29K2105/08 ,  C08J5/06 ,  C08J2381/02 ,  C08J2381/04 ,  C08J2479/00 ,  C08K7/06 ,  C08K5/29 ,  C08L81/02

Abstract: A carbon fiber-reinforced polyarylene sulfide has both dynamic characteristics and molding cycle characteristics and can be produced with high productivity by preparing a polycarbodiimide-modified polyarylene sulfide using a polyarylene sulfide and a polycarbodiimide as raw materials, then melting the resulting polycarbodiimide-modified polyarylene sulfide, and combining the polycarbodiimide-modified polyarylene sulfide with carbon fibers at a specific ratio to produce a composite.

公开(公告)号：US20180142083A1

公开(公告)日：2018-05-24

申请号：US15873031

申请日：2018-01-17

Applicant: Toray Industries, Inc.

Inventor： Naokichi Imai ,  Kentaro Sano ,  Keisuke Inose

IPC: C08K9/04 ,  B29C70/14 ,  C08K7/06 ,  C08L81/00 ,  B29C45/00

CPC classification number: C08K9/04 ,  B29C45/0001 ,  B29C70/14 ,  C08K7/06 ,  C08K2201/004 ,  C08L81/00 ,  C08L81/04

Abstract: A molded article includes 10 to 40% by mass of reinforcing fibers (A); and 60 to 90% by mass of a matrix resin (B) mainly including a polyarylene sulfide, the molded article satisfying conditions (I) to (IV) and having a tensile strength of 240 MPa or more in a main orientation direction of the reinforcing fibers (A) in the molded article: (I) strand tensile strength of the reinforcing fibers (A) is 1.5 to 5.5 OPa; (II) number average fiber length of the reinforcing fibers (A) in the molded article is 0.4 mm or more and less than 0.6 mm; (III) tensile elongation of the matrix resin (B) is 1.5 to 10%; and (IV) interfacial shear strength between the reinforcing fibers (A) and the matrix resin (B) is 20 MPa or more.

公开(公告)号：US20170291985A1

公开(公告)日：2017-10-12

申请号：US15507929

申请日：2015-07-16

Applicant: TORAY INDUSTRIES, INC.

Inventor： Reo Takaiwa ,  Kentaro Sano ,  Noriyuki Hirano

IPC: C08G59/40 ,  C08J5/04 ,  C08G59/50 ,  C08G59/22 ,  C08G59/24 ,  C08J5/24 ,  C08G59/38

CPC classification number: C08G59/4021 ,  C08G59/226 ,  C08G59/245 ,  C08G59/38 ,  C08G59/46 ,  C08G59/5073 ,  C08J5/042 ,  C08J5/24 ,  C08K3/38 ,  C08K5/315 ,  C08K5/3445 ,  C08L63/00

Abstract: Provided are: an epoxy resin composition for fiber-reinforced composite materials, which has a good balance between storage stability and fast curing properties at high levels; a prepreg; and an epoxy resin composition which exhibits excellent mechanical characteristics as a fiber-reinforced composite material. A resin composition which contains an epoxy resin, dicyandiamide, an imidazole compound and an acidic compound, while satisfying the following conditions (a)-(c): (d) The time until the heat flow rate reaches the peak top after the epoxy resin composition reaches 100° C. is 25 minutes or less as measured by a differential scanning calorimeter at an isothermal temperature of 100° C. in a nitrogen gas stream. (e) The time until the heat flow rate reaches the peak top after the epoxy resin composition reaches 60° C. is 15 hours or more as measured by a differential scanning calorimeter at an isothermal temperature of 60° C. in a nitrogen gas stream. (f) The ratio of the number of epoxy groups to the number of imidazole rings in the epoxy resin composition is from 25 to 90 (inclusive).

公开(公告)号：US20160264740A1

公开(公告)日：2016-09-15

申请号：US15032713

申请日：2014-10-24

Applicant: TORAY INDUSTRIES INC.

Inventor： Naokichi Imai ,  Keisuke Inose ,  Kentaro Sano ,  Atsuki Tsuchiya

IPC: C08J5/06

CPC classification number: C08J5/06 ,  C08J2381/02 ,  C08J2381/04 ,  C08K5/29 ,  C08K7/06 ,  C08K9/04 ,  C08L81/02

Abstract: A fiber-reinforced resin composition includes a polyarylene sulfide (A), a carbodiimide compound (B) and carbon fibers (C) in specific blending amounts and in which the carbon fibers (C) are surface-treated with a sizing agent (D), the carbodiimide compound (B) is an aliphatic carbodiimide compound, and the sizing agent (D) is a compound having three or more specific functional groups in one molecule; and a fiber-reinforced composite material includes a thermoplastic resin (A′), an adhesive compound (B′) and reinforcing fibers (C′) and in which the adhesive compound (B′) is a compound having two or more specific structures in one molecule, the thermoplastic resin (A′) is a thermoplastic resin containing an element other than carbon in a repeating unit structure of a main chain, and an abundance ratio Rb of the adhesive compound (B′) is 1.2 or more.

Abstract translation: 纤维增强树脂组合物包括特定配合量的聚芳硫醚（A），碳二亚胺化合物（B）和碳纤维（C），其中碳纤维（C）用施胶剂（D）进行表面处理， ，碳二亚胺化合物（B）为脂肪族碳二亚胺化合物，上浆剂（D）为1分子中具有3个以上特定官能团的化合物; 纤维增强复合材料包括热塑性树脂（A'），粘合剂化合物（B'）和增强纤维（C'），并且其中粘合剂化合物（B'）是具有两个或多个特定结构的化合物 一个分子，热塑性树脂（A'）是在主链的重复单元结构中含有碳以外的元素的热塑性树脂，粘合剂（B'）的丰度比Rb为1.2以上。