Mitsubishi Gas Chemical Company, Inc.

Yutaka Kanbara

Tomoo Tsujimoto

Masaharu Doya

Takashi Okawa

Genki Nogami

Yasushi Higuchi

Akifumi Iida

Ken-ichi Kimizuka

Emi Nakano

Hiroshi Matsunaga

Takafumi Abe

Norio Fushimi

Hideo Ikarashi

Aoi Yamazoe

Tsuyoshi Hatakeyama

Yuta Ohmori

Kenichi Kimizuka

Takashi Ohkawa

Aksushi Okamoto

Aoi Yokoo Yamazoe

Kazunari Yamamoto

Yoichi Kyuuko

Yuta Oomori

Yutaka Okawa

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

Provided is a method for producing a methyl-adduct compound, the method including methylating, in the presence of potassium carbonate and dimethyl carbonate, a dinitrile compound represented by Formula (1) below to obtain a methyl-adduct compound represented by Formula (2) below: where in Formula (2), R˜Reach independently represent hydrogen or methyl, and from one to three of R˜Rare each methyl.

Compound and method for producing same

A production method for a cyclohexanedicarboxylic acid compound, having a step of obtaining a cyclohexanedicarboxylic acid compound or an aqueous ammonia solution of a cyclohexanedicarboxylic acid compound by bringing a phthalic acid compound in an aqueous ammonia solution into contact with hydrogen in the presence of a fixed bed catalyst in a reactor.

Production method for cyclohexanedicarboxylic acid compound, dicyanocyclohexane compound and bis(aminomethyl)cyclohexane compound

The present invention provides a production method for dicyanocyclohexane, including a step of obtaining dicyanocyclohexane by reacting cyclohexanedicarboxylic acid and/or a salt thereof, or a heated concentrate of an aqueous ammonia solution of cyclohexanedicarboxylic acid with ammonia in a solvent having a boiling point equal to or higher than a reaction temperature.

Production method for dicyanocyclohexane

In order to provide a novel phenyl imidazoline compound having an aminomethyl group, a novel phenyl tetrahydropyrimidine compound having an aminomethyl group, or the like, a compound according to the present invention or a salt thereof is represented by the following formula (1): 

Phenyl imidazoline compound having aminomethyl group or salt thereof, or phenyl tetrahydropyrimidine compound having aminomethyl group or salt thereof, and production method for such compounds or salts 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

A process of production of an aromatic alcohol or a heterocyclic aromatic alcohol, containing a step of reacting an aromatic amine or a heterocyclic aromatic amine having an aromatic ring or a heterocyclic aromatic ring having thereon at least one substituent &#x2014;CHRNRR(wherein R, Rand Reach independently represent hydrogen, an alkyl group having from 1 to 4 carbon atoms, or a benzyl group), with an alcohol, in the presence of a basic catalyst.

Process for production of aromatic alcohol or heterocyclic aromatic alcohol

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

A process for the production of a dialkyl carbonate comprising

Process for the production of dialkyl carbonate

A method for the production of an alkylene carbonate at high yields and high selectivity by a reaction between an alkylene glycol and urea, the method being capable to preventing the deposition of a white crystal in the reflux condenser used in a conventional method for the production of alkylene carbonate and the subsequent decrease in the yield, wherein: a gas washing member and a cooling member are disposed above a reaction portion where alkylene glycol and urea are allowed to react, ammonia-containing steam exhausted from the reaction portion is downwardly introduced into the cooling member through the gas washing member, condensate and ammonia gas exhausted from a bottom of the cooling member are gas-liquid separated, the condensate is introduced into the gas washing member, and the ammonia gas is removed from the reaction system.

Method and apparatus for the production of alkylene carbonate

A process for producing alkylene carbonates which comprises reacting urea and glycols described by the general formula RCH(OH) CH.sub.2 OH; wherein R represents hydrogen or an alkyl group containing 1 to 4 carbons, using a catalyst containing zinc, magnesium, lead or calcium at reduced pressures. The alkylene carbonates are produced with high yield easily using raw materials which are comparatively inexpensive with a mild reaction that does not involve explosive or hazardous materials.

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Niigata, Japan

Yutaka Kanbara