Mitsubishi Gas Chemical Company, Inc.

Tomoo Tsujimoto

Yutaka Kanbara

Taketo Ikeno

Masayuki Katagiri

Makoto Tsubuku

Takashi Okawa

Hideyuki Sato

Umi Yokobori

Genki Nogami

Yasushi Higuchi

Takashi Kobayashi

Hiroshi Matsunaga

Masanobu Sogame

Masaharu Doya

Yoshinori Mabuchi

Akifumi Iida

Sotaro Hiramatsu

Hideo Ikarashi

Keita Tokuzumi

Kenji Arii

Tsuyoshi Hatakeyama

Ryoko Watanabe

Yutaka Okawa

Kazunari Yamamoto

Yoichi Kyuuko

Yuta Oomori

The present invention can provide a method for producing an aromatic nitrile in which a fixed-bed reactor including a plurality of reaction tubes is used to subject a gaseous mixture comprising an aromatic hydrocarbon, ammonia, and oxygen by contact catalytic reaction on a catalyst to thereby produce the corresponding aromatic nitrile, wherein the catalyst is composed of an oxide containing vanadium, chromium, and boron and one or more supports selected from among alumina, silica-alumina, zirconia, and titania. One of the reaction tubes is filled with the catalyst of one kind and examined as to where a hot spot lies therein. An inert substance is filled into that portion of each of the plurality of reaction tubes which corresponds at least to the hot spot, and the catalyst is filled into the remaining portions.

Method for producing aromatic nitrile by ammoxidation reaction

The present invention relates to a diacrylate compound represented by general formula (1), a composition thereof, and a cured product of the compound/composition.  In the formula, R denotes a hydrogen atom or a methyl group; R, R, R, and Reach independently denote a Clinear or branched alkyl group, with the proviso that R, R, R, and Rare not all methyl groups. The present invention provides: a novel diacrylate compound which can provide a cured product having an excellent balance of physical properties such as low curing shrinkage, flexibility, resistance to bending, and low curling properties, and which can be used as a photo- or thermal-radical polymerizable monomer; a composition of the compound; and a cured product of the compound/composition.

Diacrylate compound, composition thereof, and cured product thereof

The present invention relates to a limited composition containing a diacrylate compound represented by general formula (1).  In the formula, R denotes a hydrogen atom or a methyl group. The present invention provides a diacrylate-compound-containing composition which provides a cured product having excellent physical properties such as low curing shrinkage, flexibility, resistance to bending, and low curling properties, and which can be used as a photo- or thermal-radical polymerizable composition and a cured product of the composition.

Diacrylate-compound-containing composition and cured product thereof

The present invention is a cyanate ester compound represented by the following formula (1): 

Cyanate ester compound, curable resin composition containing the same, and hardened product thereof

A curable resin composition which can achieve a cured product in which the generation of cracks upon curing is suppressed and which has both a low thermal expansion rate and a low water absorbability is provided. The curable resin composition comprises: at least a cyanate ester compound (A) represented by the following formula (I); a metal complex catalyst (B); and an additive (C), wherein the additive (C) contains any one or more selected from the group consisting of a compound represented by the following general formula (II), a compound represented by the following general formula (III), and a tertiary amine. 

Curable resin composition and cured product thereof

A benzoguanamine compound having an amino methyl group is represented by the following Formula (1), or a salt thereof: 

Benzoguanamine compound having aminomethyl group, or salt thereof, and method for manufacturing the same

There is provided a novel dicyanatophenyl-based difunctional cyanate ester which is in a liquid form at ordinary temperature and can obtain a cured product having an excellent low thermal expansion rate. There is disclosed a cyanate ester compound represented by the following formula (I): (wherein Rrepresents a hydrocarbon group having 2 to 20 carbon atoms).

Cyanate ester compound, curable resin composition containing cyanate ester compound, and cured product thereof

Provided is a method for producing an alicyclic carboxylic acid by hydrogenating an aromatic ring of an aromatic carboxylic acid, which comprises using a catalyst containing ruthenium and palladium as a catalyst, and also provided is a co-supported ruthenium-palladium catalyst in which ruthenium and palladium are present in a form of particles containing both the ruthenium and palladium on a surface of a support. A catalyst has been developed which uses a relatively inexpensive noble metal, ruthenium, which has an activity equivalent to that of a rhodium catalyst, and which does not undergo decrease in activity as observed in a rhodium catalyst, and thereby an industrially simple method for producing an alicyclic carboxylic acid has been established.

Method for producing alicyclic carboxylic acid and catalyst used in same

There is provided a novel cyanate ester compound that can provide a cured product possessing excellent heat resistance. The cyanate ester compound is represented by general formula (1): wherein R1 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms; Rx1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; Ry1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; m is an integer of 0 to 4; and n is an integer of 0 to 4.

Cyanate ester compounds and cured products thereof

A quaternary ammonium hydroxycarboxylate is produced by quaternizing a tertiary amine with a hydroxycarboxylic ester represented by the following Formula 1:wherein Rto Rare as defined in the disclosure. By using only one tertiary amine having at least one substituent different from Rof the ester moiety of the hydroxycarboxylic ester and by controlling the reaction conditions, a mixture of quaternary ammonium hydroxycarboxylates having different quaternary ammonium ions is produced. By reacting an inorganic acid with the quaternary ammonium hydroxycarboxylate or its mixture, a quaternary ammonium salt of inorganic acid or its mixture is produced.

Production of quaternary ammonium salt of hydroxycarboxylic acid and quaternary ammonium salt of inorganic acid

Production of quaternary ammonium salt of hydroxycarboxylic acid and quarternary ammonium salt of inorganic acid

1,5-naphthylenediisocyanate is industrially advantageously produced at high yields by pyrolyzing methyl 1,5-naphthylenecarbamate synthesized by providing 1,5-naphthylenedinitrile as a raw material and carrying out amidation, chlorination and Hofmann rearrangement.

Process for the production of 1,5-naphtylenediisocyanate

Provided a process for producing higher content of trans 1,4-bis(aminomethyl)cyclohexane which is used as the raw material for producing polyamides or polyurethanes having physically and chemically excellent properties from 1,4-bis(aminomethyl)cyclohexane which is generally produced by hydrogenation of p-xylylenediamine. That is, a mixture of cis and trans 1,4-bis(aminomethyl)cyclohexane is isomerized by heating at 120 to 250.degree. C. in the presence of a platinum group catalyst to change to trans isomer. 1,4-bis(aminomethyl)cyclohexane containing more than 80% trans isomer is produced by combining this isomerization technique and crystallization technique.

Process for producing trans 1,4-bis(aminomethyl)cyclohexane

An urethane compound is produced in high yield under mild conditions by reacting a formamide compound with dimethyl carbonate in the presence of basic anion exchange resin as a catalyst or by reacting an amine compound with dimethyl carbonate in the presence of basic anion exchange resin as a catalyst and methyl formate. Separation and recovery of the catalyst and purification of the urethane compound can be carried out very readily, and since control of water content is not particularly required in this invention, an amine compound and dimethyl carbonate of poor quality can be used.

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Niigata, Japan

Tomoo Tsujimoto