Rhone-Progil

Rhone-Poulenc Industries

Jean Berthoux

Ghislain Schwachhofer

Jacques-Pierre Martinaud

Yvonick Chevallier

Francois Meiller

Yolande Bourgau

Solid catalyst, insoluble in organic and aqueous solvents and having the general formula:

Insoluble metallic complexes and catalysts therefrom

Substituted amines are prepared with high selectivity by reacting olefin, hydrogen, CO and secondary amine in the presence of a coordination complex catalyst of a Group VIII metal and a ligand, the donor atom of which is oxygen, nitrogen or sulfur.

Process for manufacture of tertiary amines

A catalyst for hydrogenation, hydroformylation, olefin oxidation and similar reactions is prepared by treating activated carbon first with a volatile acid and then with a basic substance to provide a suitable support for the catalyst, and then adsorbing onto such support a coordination complex of a transition metal. The adsorption of the catalyst onto the support may be effected in situ during the hydrogenation, hydroformylation, oxidation, etc. reaction.

Acid extracted-alkalized/carbon catalyst support with coordination

A method of making alkyl esters of polycarboxylic acids by reacting an alkaline salt of the acid and at least one halo-alkane so that the rate of conversion is limited to 35- 85% whereby no partial esters are formed.

Manufacture of alkyl esters of polycarboxylic acids

Carbon disulfide is made by contacting hydrocarbons with sulfur vapor and sulfur dioxide at temperatures between 500.degree. - 1000.degree.C. for 0.3 - 10 seconds in the absence of a catalyst. The total sulfur introduced as sulfur vapor and sulfur dioxide is between 2.1 and 3.5 atoms per hydrocarbon carbon atom.

Process of manufacturing carbon bisulfide

Carboxylic acid alkyl esters are prepared by reacting an halo-alkane with an aqueous solution of an alkali metal salt of a carboxylic acid, using ammonia, a primary amine, a secondary amine, a heavy tertiary amine or a heavy quaternary ammonium salt as the catalyst.

Growing community of inventors

Decines, France

Jean Berthoux