Atlantic Richfield Company

John J McCoy

John G Zajacek

Karl E Fuger

Samuel J Falcone

John J Leonard

Mary T Arnold

An improved process for the preparation of N-alkyl-monosubstituted carbamates by reacting an aliphatic primary amine, urea and a monohydric aliphatic alcohol in the presence of a strongly basic tertiary amine catalyst and optionally an inert solvent.

Preparation of N-alkyl-monosubstituted carbamates

An improved process for the preparation of N-monosubstituted carbamates by reacting an aromatic primary amine, urea and a monohydric aliphatic alcohol in the presence of a strongly basic tertiary amine catalyst and optionally an inert solvent.

Preparation of N-monosubstituted carbamates

A process for the preparation of N-monosubstituted carbamic acid esters by reacting an unsubstituted carbamic acid ester and an aromatic primary amine at a suitable pressure and reaction temperature in the presence of a monohydric aliphatic alcohol and preferably in the presence of a strongly basic tertiary amine as catalyst. Optionally an inert co-solvent in addition to the alcohol may be employed.

Process for the preparation of N-monosubstituted carbamic acid esters

A process for the preparation of N-alkyl-monosubstituted carbamic acid esters by reacting an unsubstituted carbamic acid ester and an aliphatic primary amine at a suitable pressure and reaction temperature in the presence of a monohydric aliphatic alcohol and preferably in the presence of a strongly basic tertiary amine as catalyst. Optionally an inert co-solvent in addition to the alcohol may be employed.

Process for the preparation of N-alkyl-monosubstituted carbamic acid

Separating carbon monoxide from mixed gases containing the same with an adsorbent which is the product of heating a mixture of ferrous acetate and polyacrylonitrile in a ratio of ferrous acetate to polyacrylonitrile of 0.5:1.0 to 2.0:1.0 at a temperature of about 200.degree.-400.degree. C. in an oxygen-containing atmosphere for from about 2 to 10 hours.

Thermally condensed mixture of polyacrylonitrile and ferrous acetate as

A process for the recovery of selenium from a urethane solution containing selenium compounds which may be in the form of metallic selenium, inorganic selenium and/or organoselenium compounds which comprises contacting the selenium-containing urethane solution at suitable temperatures with a supported metal or a mixture of metals and/or metal oxide compounds, said metal selectively chosen from Group B metals, i.e., Group IB through VIIIB, metals of the Periodic Table and particularly supported copper and mixtures of copper and other metal oxide compounds of said group.

Process for the recovery of selenium from urethanes containing selenium

A process for the production of ureas by contacting at elevated temperatures and pressures in a basic solution a nitrogenous organic compound containing at least one non-cyclic group, in which a nitrogen atom is directly attached to a single carbon atom and is also attached through a double bond to an oxygen or another nitrogen atom, with carbon monoxide and with water or another nitrogenous organic compound in which the nitrogen atom is directly attached to at least one hydrogen atom, in the presence of an active amount of a catalyst selected from the group consisting of selenium, sulfur, compounds containing selenium, sulfur compounds and mixtures thereof.

Process for the manufacture of ureas

A method for the production of a urethane by reacting an organic hydroxyl group-containing compound, carbon monoxide and an organic nitro-compound at a suitable pressure and reaction temperature in the presence of a catalyst system consisting of a mixture of a tertiary amine and a platinum group metal or platinum group metal compound.

Process for the production of urethanes

Production of oximes (and ketones) by contacting at elevated temperatures and pressures, a primary or secondary saturated aliphatic nitrocompound with carbon monoxide in the presence of a catalyst comprising metallic selenium or inorganic selenium compounds and a base.

Production of oximes by the reaction of carbon monoxide with

A process for the manufacture of urethanes and the optional co-production of amines by reacting at elevated temperatures and pressures an organic compound containing at least one hydroxyl group with carbon monoxide and a nitrogenous organic compound containing at least one non-cyclic group, in which a nitrogen atom is directly attached to a single carbon atom and is also attached through a double bond to an oxygen or another nitrogen atom, in the presence of an active amount of a catalyst selected from the group consisting of selenium, sulfur, selenium compounds, tellurium compounds, sulfur compounds and mixtures thereof and a base and/or water.

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Media, PA, United States of America

John J McCoy