Showa Denko K.k.

Etsuko Kadowaki

Hiroshi Uchida

Tadashi Iino

Wataru Oguchi

Terutoshi Kumaki

Kentaro Seki

Tetsuo Nakajo

Tomoyoshi Higashi

Meiko Saihata

Yasuhiro Iwama

Takashige Miyanari

Ayumu Fujita

An allyl acetate production catalyst comprising at least (a) palladium, (b) gold, (c) a compound containing at least one element selected from copper, nickel, zinc and cobalt, (d) an alkali metal salt compound and (e) a carrier, is produced by a process comprising step 1 in which a homogeneous solution of a palladium-containing compound and a gold-containing compound is supported on a carrier by contact therewith, step 2 in which the carrier obtained in step 1 is contacted with an alkali solution for impregnation, step 3 in which the carrier obtained in step 2 is subjected to reduction treatment, and step 4 in which a compound containing at least one element selected from copper, nickel, zinc and cobalt and an alkali metal salt compound are supported onto the carrier obtained in step 3. The obtained allyl acetate production catalyst has minimal reduction in activity and improved selectivity, when used for production of allyl acetate from propylene, oxygen and acetic acid.

Process for production of allyl acetate production catalyst

A curable composition comprising: (A) a hydrocarbon compound having a plurality of carbon-carbon double bonds, and (B) a carbonaceous material. The hydrocarbon compound may preferably be 1,2-polybutadiene. The curable composition may be used for a fuel cell separator.

Curable composition, cured product thereof, molded product thereof and use as fuel cell separator

A process for producing an ester comprising reacting a carboxylic acid and ethylene in the presence of an acid catalyst in a vapor phase, wherein the concentration of olefin having 3 or more carbon atoms in the starting materials is controlled to 10,000 ppm or less in terms of the molar ratio to the total of the olefin and ethylene. The deterioration of the catalyst can be remarkably prevented from proceeding and a continuous and stable operation can be performed for a long time.

Process for producing esters

A process for producing a lower aliphatic carboxylic acid ester by a gas phase esterification reaction starting from a lower aliphatic carboxylic acid and a lower olefin, comprising adding a lower alcohol corresponding to a hydrate of a lower olefin to the gas phase reaction product, condensing a lower aliphatic carboxylic acid and the lower alcohol and while allowing the conversion into a lower aliphatic carboxylic acid ester to proceed, separating the lower aliphatic carboxylic acid ester. Productivity is increased due to the improvement of the conversion of a lower aliphatic carboxylic acid.

Process for producing lower aliphatic carboxylic acid ester

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Oita, Japan

Etsuko Kadowaki