Toray Industries, Inc.

Hiroki Oosedo

Shunsaku Noda

Toshiya Kamae

Shinji Kouchi

Go Tanaka

Nobuyuki Odagiri

Masaya Asano

Ryuji Sawaoka

Kazutaka Tamura

Shigeo Iwasawa

Atsushi Ozaki

Mutsuo Kataoka, Deceased

Shigeyoshi Kanetsuki

Hajime Kishi

Hideo Nagata

Shoji Murai

Mayumi Kataoka, Legal Representative

Ikuo Aoki

Hiroaki Hinomiya

Nobuaki Oki

Hideki Okita

Mutsuko Fujino

Naomi Miyoshi

Mariko Ishikawa

An embodiment of the invention relates to an epoxy resin composition for fiber reinforced composite material having an epoxy resin that is liquid at room temperature (component 1), aromatic polyamine that is liquid at room temperature (component 2) and diaminodiphenylsulfone (component 3). The proportion of component (1) relative to the entire epoxy resin in the composition is 60-100 wt %. The sum of the proportions of components (2) and (3) relative to the entire polyamine in the composition is 70-100 wt %. The proportion of component (3) relative to the entire polyamine in the composition is 25-60 wt %. The stoichiometric ratio of the entire polyamine to the entire epoxy resin in the composition is 0.7-1.3. Additional embodiments of the invention relate to other aspects of the invention.

Epoxy resin composition for fiber reinforced composite material, a production method for fiber reinforced composite material, and a fiber reinforced composite material

An epoxy resin composition comprises (a) an epoxy resin, (b) an anionic polymerization initiator and (c) from 1 to 30 parts by weight per 100 parts by weight of epoxy resin (a) of an aromatic ring-containing proton donor of a polyhydric alcohol and/or a polymercaptan.

Injection molding thermosetting resin composition into reinforcing fiber substrate

Epoxy resin composition, process for producing fiber-reinforced composite materials and fiber-reinforced composite materials

The present invention relates to an epoxy resin composition comprising at least (A) an epoxy resin having a cycloalkane ring or cyclohexene ring but having neither aromatic ring nor aminic nitrogen atom, (B) a carboxylic anhydride having no aromatic ring, and (C) an ultraviolet absorbent, wherein a content of component (A) is from 70 to 100 percents by weight based on the total weight of epoxy resins, and a content of component (B) is from 70 to 100 percents by weight based on the total weight of carboxylic anhydrides. By this constitution, the present invention can provide an epoxy resin composition whose cured product excels in mechanical properties and weatherability, and a fiber reinforced composite material having excellent mechanical properties and weatherability.

Epoxy resin composition excellent in weather resistance and fiber-reinforced composite materials

Composition of epoxy resin, curing agent and reactive compound

Epoxy resin compositions, epoxy resin compositions for fiber-reinforced composite materials, and fiber-reinforced composite materials comprising the same

Prepeg and carbon fiber reinforced composite materials

The invention provides a resin composition for a fiber reinforced composite which can be used to produce a prepreg excellent in tackiness, drapability and windability around a mandrel, and also provides a prepreg in which reinforcing fibers are impregnated with a resin composition, and a fiber reinforced composite obtained from them. The resin composition includes a thermosetting resin and a thermoplastic resin with a weight average molecular weight of 200,000 to 5,000,000.

Resin composition for a fiber reinforced composite, a prepreg and a fiber reinforced composite

Disclosed are epoxy resin compositions for fiber-reinforced composite materials, comprising an epoxy resin containing 70 parts by weight or more, per 100 parts by weight of the epoxy resin, of a bi-functional epoxy resin, fine particles comprising a rubber phase and substantially insoluble in epoxy resins and a curing agent. Also disclosed are prepregs and fiber-reinforced composite materials comprising the composition.

Prepreg of reinforcing fibers, epoxy resins, crosslinked rubber

A composition is useful as a prepreg containing reinforcing fibers comprises an epoxy resin, a thermoplastic elastomer of a polyamide and/or polyester block copolymer, a curing agent such as dicyandiamide, and optionally a thermoplastic resin such as a polyvinyl formal resin.

Composition for prepreg comprising epoxy resin, polyamide block

Prepregs, comprising the following components [A], [B] and [C], with the component [C] distributed near either or both of the surface layers without being regularly arranged.

Prepregs, processes for their production, and composite laminates

Prepreg, and a fiber reinforced composite material

A liquid aliphatic polyamine material, sealed in a container, has an ammonia concentration of at most about 100 ppm, and can be made by removing volatile odor forming components from a liquid comprised of aliphatic polyamine, and enclosing it in an air-tight container, with substantially no oxygen present, whereby the odor of the liquid aliphatic polyamine is reduced to a very low level even after extended storage.

Aliphatic polyamine and method of producing the same

A developer for quinonediazide/novlak positive electron beam resists including alkali metal ions, weak acid ions and a water soluble organic compound subject to the following conditions: 0.05.ltoreq.a.ltoreq.0.5, 0.07.ltoreq.bn.ltoreq.1.5 and a&lt;bn or a&gt;bn, wherein a is the concentration of the alkali metal in mol/kg, b is the concentration of the weak acid in mol/kg and n is the valence of the weak acid ions, and the concentration of the water soluble organic compound is 0.5 to 10 wt %, based on the total weight of the developer.

Quinonediazide/novolak positive electron beam resist developer

Positive electron beam resist composition containing cresolnovolak

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Ehime, Japan

Hiroki Oosedo