Hoechst Aktiengesellschaft

Wacker-chemie Gmbh

Karl-Heinz Schmidt

Gunter Roscher

Dominik Dempf

Horst Langner

Reinhard Gradl

Ludwig Schmidhammer

Rudolf Strasser

Gerhard Dummer

Klaus Eichler

Peter Horstermann

Klaus H Kaiser

Hermann Neu

Aladar Lienerth

Ernst Selbertinger

The invention relates to a process for the isolation of vinyl acetate which involves not combining the bottom product of the recylced gas washings with the water-saturated vinyl acetate but rather introducing it to further multiple distillation columns from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen over catalysts containing palladium or palladium compounds in the gas phase.

Process for the isolation of vinyl acetate by distillation

The invention relates to a process for the manufacture of unsaturated carboxylic acid esters by the reaction of olefins or cyclo-olefins with oxygen and carboxylic acids in the gaseous phase, in the presence of a catalyst which contains elements of the subsidiary group VIII of the periodic system and/or compounds thereof, and an alkali metal acetate, at temperatures of from 100.degree. to 250.degree. C. and pressures of from 0.5 to 21 bar absolute, wherein from 1 to 8000 parts per million (by weight), calculated on the carboxylic acid used, of organic chlorine compounds are added to the reaction mixture.

Process for the manufacture of unsaturated carboxylic acid esters

Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase said gas mixture consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein

Process for separating water from mixtures thereof with vinyl acetate

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Idstein, Germany

Karl-Heinz Schmidt