Mitsubishi Gas Chemical Company, Inc.

Tomotaka Wada

Yuiga Asai

Hisayuki Kuwahara

Saeko Sato

Mitsuharu Kitamura

Kazuki Kouno

Yutaka Matsuura

Takuma Hanaoka

Provided are an amine compound represented by the following formula (1), which has a low active hydrogen equivalent weight and thus is capable of providing a cured product having good properties because the amine compound has sufficient curability even though the amount of amine compound blended in an epoxy resin composition is small when the amine compound is used as an epoxy resin curing agent, and an amine composition and an epoxy resin curing agent, which contain the compound:  wherein A is a 1,2-phenylene group, a 1,3-phenylene group, or a 1,4-phenylene group.

Amine compound, amine composition, and epoxy resin curing agent

Provided are: an epoxy resin curing agent containing an amine compound (A) represented by the following general formula (1) and a phenol compound (B), wherein the content of the component (B) is 8 to 35 parts by mass relative to 100 parts by mass of the component (A), an epoxy resin composition containing it, and a carbon fiber-reinforced composite material containing a cured product of the epoxy resin composition and carbon fibers. RHN&#x2014;HC-A-CH&#x2014;NHR(1) wherein Rand Reach independently represent a hydrogen atom, or an aminoalkyl group having 1 to 6 carbon atoms, and A represents a cyclohexylene group or a phenylene group.

Epoxy resin curing agent, epoxy resin composition, and carbon fiber-reinforced composite material

A coating film formed by curing of an epoxy resin composition containing at least an epoxy resin, an epoxy resin curing agent and a solvent, wherein the coating film contains the solvent in a ratio of 1% by mass or more and 20% by mass or less, and the epoxy resin curing agent is a reaction product of the following (A) and (B). (A) At least one selected from the group consisting of metaxylylenediamine and paraxylylenediamine. (B) At least one selected from the group consisting of an unsaturated carboxylic acid represented by the following formula (1) and a derivative thereof: wherein Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aralkyl group having 1 to 8 carbon atoms, or an aryl group.

Coating film having chemical resistance

A fiber-reinforced composite material of the present invention is a fiber-reinforced composite material comprising: an epoxy resin cured product obtained by curing an epoxy resin composition and a reinforcing fiber, wherein the epoxy resin composition comprises an epoxy resin (A) and a curing agent (B); 10 to 80% by mass of the curing agent (B) is 1,2,4-cyclohexanetricarboxylic acid-1,2-anhydride; and the reinforcing fiber comprises one or more selected from the group consisting of a carbon fiber, an aramid fiber, and a boron fiber.

Fiber-reinforced composite material

There are provided a novel aromatic aldehyde compound capable of providing an epoxy resin coating film and an epoxy resin cured material satisfying all of the excellent surface property (smoothness, gloss), drying property, water resistance, transparency and adhesion, and an epoxy resin curing agent and an epoxy resin composition containing the aromatic aldehyde compound. The aromatic aldehyde has a branched alkyl group having 10 to 14 carbon atoms.

Aromatic aldehyde, and epoxy resin curing agent and epoxy resin composition comprising the aromatic aldehyde

The present invention relates to a process for producing an amino compound by subjecting a polyamine and an alkenyl compound to addition reaction in the presence of an alkali metal hydride compound which is capable of supplying the amino compound in a stable manner without occurrence of odor.

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Kanagawa, Japan

Tomotaka Wada