Mitsubishi Gas Chemical Company, Inc.

Nippon Electric Co., Ltd.

Mitsuo Abe

Tomiya Isshiki

Norio Takeda

Tetsuo Tomita

Mitsuo Miura

Tomoyuki Yui

Takao Kondo

Osamu Aoki

Akihiro Dohya

Kaoru Tsuyuki

Yoshiyuki Aoki

Masahiro Jono

Toshiaki Kozaki

Hideo Uno

Yasuhiko Hino

A process for the production of 2,3,5-trimethylbenzoquinone (TMBQ) from 2,3,6-trimethylphenol (TMP) is described, comprising contacting TMP with oxygen or an oxygen containing gas in a medium of water and an aliphatic alcohol having from 5 to 10 carbon atoms in the presence of catalyst of a copper halogen complex represented by the formula as shown below or a mixture of the copper halogen complex and an alkali metal halide or a mixture of the copper halogen complex, an alkali metal halide and cupric hydroxide and/or cuprous chloride

Process for the production of 2,3,5-trimethylbenzoquinone

A multilayer circuit construction includes a conductive layer formed of an alloy of a noble metal and a small amount of a base metal disposed on a heat resistant insulating substrate. The portion of the substrate not covered with the conductive alloy is covered with an oxide of the base metal constituent of the alloy. The construction may be formed by depositing a base metal layer over the substrate, followed by depositing the noble metal over a part of the base metal layer. By oxidizing at high temperatures, the exposed base metal layer is converted to oxide, while the noble metal and the base metal thereunder diffuse into each other to form the alloy.

Multilayer circuit and process for manufacturing the same

Hydrazine sulfate having a relatively large particle diameter and a high purity is produced by hydrolysis of benzophenoneazines by sulfuric acid having a concentration of 75% by weight or less in an amount of 1.1 times by mole or more the stoichiometric amount in a very high conversion and a high yield with less operational loss.

Process for producing hydrazine sulfate

An imine compound is produced by reacting a benzophenone with ammonia in the presence of 0.01 to 10% by weight of a carboxylic acid as a catalyst at a reaction temperature of 50.degree. to 350.degree. C on the basis of benzophenone. Ammonia is fed to the reaction system continuously under a pressure of 2 to 15 atmospheres. A solvent may be used for the reaction. The catalyst carboxylic acid can be readily recovered and reused without any influence of water formed by the reaction and brings about no problem of corrosion to reactor apparatus.

Process for producing imine compounds

An imine compound is produced in high yield by reacting a benzophenone with ammonia in the presence of 0.01 to 100% by weight of an oxide of at least one of metals selected from the group consisting of metals of the second to fifth periods of Group III to V of the periodic Table, and iron as a catalyst at a reaction temperature of 150.degree. to 250.degree. C on the basis of benzophenone. Ammonia is fed to the reaction system continuously under a pressure of 2 to 15 atmospheres. A solvent may be used for the reaction. The catalyst metal oxide can be readily recovered and reused without any influence of water formed by the reaction.

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Tokyo, Japan

Mitsuo Abe