Mitsui Chemicals, Inc.

Naritoshi Yoshimura

Tetsuya Hamada

Shinji Kiyono

Tadahito Nobori

Shuji Ozawa

Hiroshi Kouno

Hideo Kitagawa

Saiko Sawada

Isao Hara

Kazumi Mizutani

Takaomi Hayashi

Eiji Watanabe

Tsuneji Suzuki

Takashi Nakano

Atsushi Shibahara

Yuichi Ito

Hiroaki Tamatani

Naoto Matsukawa

Yasushi Nakayama

Seiichi Ishii

Yugo Yamamoto

Yasuhiko Suzuki

Aya Nakagawa

Shinsuke Kinoshita

Kou Tsurugi

Kazumori Kawamura

Susumu Murata

Mitsuaki Chida

Susumu Saito

Yasunori Saito

Junya Kiyosu

A method for producing bis(aminomethyl)cyclohexanes includes a nuclear hydrogenation step of producing hydrogenated phthalic acids or phthalic acid derivatives by nuclear hydrogenation of phthalic acids or phthalic acid derivatives of at least one selected from the group consisting of phthalic acids, phthalic acid esters, and phthalic acid amides; a cyanation step of treating the hydrogenated phthalic acids or phthalic acid derivatives obtained in the nuclear hydrogenation step with ammonia, thereby producing dicyanocyclohexanes; and an aminomethylation step of treating the dicyanocyclohexanes obtained in the cyanation step with hydrogen, thereby producing bis(aminomethyl)cyclohexanes. In the cyanation step, metal oxide is used as a catalyst, and the obtained dicyanocyclohexanes have a metal content of 3000 ppm or less.

Method for producing bis(aminomethyl)cyclohexanes

A method for producing trans-1,4-bis(aminomethyl)cyclohexane includes a nuclear hydrogenation step of producing a hydrogenated terephthalic acid or terephthalic acid derivative by nuclear hydrogenation of a terephthalic acid or terephthalic acid derivative, the terephthalic acid or terephthalic acid derivative being at least one selected from the group consisting of terephthalic acid, terephthalic acid ester, and terephthalic acid amide; a cyanation step of treating the hydrogenated terephthalic acid or terephthalic acid derivative with ammonia, thereby producing 1,4-dicyanocyclohexane, and producing trans-1,4-dicyanocyclohexane from the obtained 1,4-dicyanocyclohexane; and an aminomethylation step of treating the trans-1,4-dicyanocyclohexane with hydrogen, thereby producing trans-1,4-bis(aminomethyl)cyclohexane. Metal oxide is used as a catalyst in the cyanation step, and the obtained trans-1,4-dicyanocyclohexane has a metal content of 3000 ppm or less.

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

The present invention is a method for producing a polyhydric phenol, including the following steps (a) to (d): (a) a first step of producing (4S,5R,6S)-4,5,6-trihydroxy-2-cyclohexcene-1-one from 2-deoxy-scyllo-inosose by a dehydration reaction; (b) a second step of producing 1,2,4-trihydroxybenzene from the (4S,5R,6S)-4,5,6-trihydroxy-2-cyclohexene-1-one obtained in the first step by a dehydration reaction; (c) a third step of producing 4-hydroxycyclohexane-1,3-dione from the 1,2,4-trihydroxybenzene by a catalytic hydrogenation reaction with the use of a metal catalyst; and (d) a fourth step of producing hydroquinone by heating the 4-hydroxycyclohexane-1,3-dione.

Method for producing polyhydric phenol

The invention aims to provide latent curing agents which exert high low-temperature curing properties when used together with ionically polymerizable compounds and which exhibit high storage stability at room temperature. Latent curing agents for ionically polymerizable compounds which agents each contain a hydroxyl-free amine imide compound having an N&#x2014;N bond energy of 100 to 210 kJ/mol as determined by B3LYP functional theory method.

Latent curing agents, epoxy resin compositions containing the same, sealing materials, and organic EL displays

Provided is a method for producing catechol in a one-pot by reacting (4S,5R,6S)-4,5,6-trihydroxy-2-cyclohexene-1-one under hydrogen-reducing conditions while heating.

Method for producing catechol

Propylene glycol is produced by a method of producing propylene glycol, the method including: obtaining propylene glycol by performing catalytic hydrogenation of glycerol in the presence of a catalyst, the catalyst containing zinc oxide and at least one of copper and copper oxide, and the catalyst, after being reduced at 180&#xb0; C. to 230&#xb0; C. in the presence of hydrogen, showing a half width of from 0.4 to 1.1 of a peak having a peak top at a position at which a diffraction angle (2&#x3b8;&#xb1;0.2&#xb0;) is 43.1&#xb0; in an X-ray diffraction pattern obtained using CuK&#x3b1; as a radiation source.

Method of producing propylene glycol

The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I') below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst. 

Transition metal complex compounds, olefin oligomerization catalysts including the compounds, and processes for producing olefin oligomers using the catalysts

It is an object of the present invention to provide a process for producing propylene glycol from glycerol as a raw material without the necessity for a step of gasifying glycerol. The process for producing propylene glycol of the present invention comprises a step of subjecting glycerol to catalytic hydrogenation in the presence of a catalyst A containing zinc oxide, silica, and at least one of copper and copper oxide.

Process for producing propylene glycol

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Funabashi, Japan

Naritoshi Yoshimura