Halcon Research and Development Corp.

The Halcon Sd Group, Inc.

David Moy

Acetaldehyde is produced by reacting acetic anhydride with hydrogen in the presence of a supported Group VIII noble metal catalyst wherein the reaction is carried out in the liquid phase.

Process for the preparation of acetaldehyde

Acetaldehyde is produced by reacting acetic anhydride with hydrogen in the presence of a Group VIII noble metal catalyst wherein the reaction is carried out in the liquid phase but the reaction is maintained under boiling conditions and the entire reaction effluent is in vapor form.

Process for preparing acetaldehyde

A process for the production of urethanes is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide and an organic compound containing at least one hydroxyl group in the presence of a catalyst comprising a member selected from the group consisting of carbonyls of Co, Mo, Ti, Rh, Fe, Ni and mixtures thereof. Urethane yields and selectivities are further improved by conducting the reaction in the additional presence of an organic compound containing at least one C.dbd.N or C.dbd.C group. When such unsaturated organic compounds are employed, the catalyst can additionally comprise iridium carbonyl.

Catalytic process for the manufacture of urethanes

A process for the production of carbamates is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide, an organic compound containing at least one hydroxyl group and a source of sulfur, selenium or tellurium, in the presence of an effective amount of a catalyst selected from the group consisting of non-halide compounds and complexes of metals of Groups IVB, VB, VIB, VIIB, VIII, IB and IIIA of the Periodic Table. Further improved results are obtained by employing in the reaction zone at least one promoter selected from the group consisting of metals of Group IA and IIA of the Periodic Table.

Process for the manufacture of carbamates

A process for the production of carbamates is provided which comprises contacting an organic primary or secondary amine with a source of carbon monoxide, an organic compound containing at least one hydroxyl group and a source of sulfur, selenium or tellurium, in the presence of a catalyst for the reaction and in the presence of at least one member selected from the group consisting of disulfides of the formula

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Ridgewood, NJ, United States of America

David Moy