Snamprogetti S.p.a.

Anic S.p.a.

Morello Morelli

Carlo Piccinini

Pierluigi Rebora

Edoardo Platone

Domenico Sanfilippo

Aldo Prevedello

Renato De Simone

Fortunato De Marco

2,5-Dimethyl-2,4-hexadiene is prepared by dehydrating 2,5-dimethyl-2,5-hexanediol in liquid phase. The reaction takes place by contacting 2,5-dimethyl-2,5-hexanediol, melted or dissolved in an appropriate solvent, with acids, heating the mixture at a temperature of 100.degree. C.-160.degree. C. and distilling off water from the reaction environment as it is being formed. The pressure can range between 1 and 10 bars.

Process for preparing 2,5-dimethyl-2,4-hexadiene

The invention relates to acetylenic glycols having the formula : ##STR1## wherein R is hydrogen or an alkenyl group, and to their derivatives obtained through hydrogenation or ethoxylation reactions, these compounds showing outstanding surface active properties. The invention relates also to the process for the preparation of the subject compounds starting from 6-methyl-5-hepten-2-one.

Acetylenic alcohols, their derivatives and process for their production

In a process for the selective hydrogenation of polyunsaturated compounds, by means of a catalyst system, the hydrogenation is carried out in gaseous phase in the presence of a catalyst of a metal of the eight group of the Periodical Table, partially deactivated by a deactivating system.

Selective hydrogenation in gaseous phase of cyclopentadiene or a mixture

The present invention provides a novel catalyst for use in the manufacture of ethylene oxide from ethylene. The catalyst comprises silver, calcium and barium in gram atomic ratio of 15/2.5/1.

Catalyst for the production of ethylene oxide

The preparation of propylene oxide by means of direct oxidation of propylene with oxygen or air in the presence of silver based catalysts is characterized by carrying out the reaction in the presence of water vapor in a quantity between 2 and 25%.

Procedure for propylene oxide synthesis

Ethylene oxide is prepared by oxidizing an ethylene containing feed with oxygen in the presence of a catalyst which comprises an element or a compound of silver, calcium and barium in atomic ratios of 15:2.5:1.

Process for the production of ethylene oxide

A process is described whereby a linear hydrocarbon diolefin is selectively hydrogenated to a linear hydrocarbon olefin in the presence of a palladium base catalyst by adding to the reaction mixture an aqueous solution of a zinc salt such as zinc acetate wherein the ratio of water/zinc is at least 1/1 by weight.

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San Donato Milanese, Italy

Morello Morelli