Suntech, Inc.

Sun Ventures, Inc.

William J Murtaugh

Walter A Butte, Jr

Howard P Angstadt

Richard E Mitchell

In the process of hydrogenating aliphatic nitriles to primary amines whereby the nitrile is hydrogenated in a solvent system containing added ammonia using a cobalt or ruthenium catalyst, the improvement of employing an ether as solvent and carrying out the hydrogenation in the presence of water in an amount of from about 5% to about 15% by volume of the ether solvent whereby the rate of reaction is increased, and selectivity to primary amine products is increased.

Hydrogenation of aliphatic nitriles to primary amines

A process for the hydrogenation of aromatic dinitriles to the corresponding cycloaliphatic aminomethyl compounds by

Process for hydrogenating aromatic dinitriles

In the process of hydrogenating aromatic nitriles to primary amines whereby the nitrile is hydrogenated in a solvent system containing added ammonia using a cobalt or nickel catalyst, the improvement of employing an ether as solvent and carrying out the hydrogenation in the presence of water in an amount of from about 10% to about 20% by volume of the ether solvent whereby the rate of reaction is increased, secondary amine by-products are reduced and catalyst may be recycled without adverse effects.

Hydrogenation of aromatic nitriles to primary amines

A process for the preparation of 1,3 or 1,4-bis (aminomethyl)cyclohexane by hydrogenating a solvent solution of iso- or terephthalonitrile at a temperature between about 50.degree. and about 150.degree. C., at a pressure of between about 500 and about 1500 psig., and in the presence of a supported rhodium catalyst.

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Eddystone, PA, United States of America

William J Murtaugh