P C U K Produits Chimiques Ugine Kuhlmann

Caffaro, S.p.a., Societa Per L'industria Chimica Ed Elettrochimica

Achille Pontoglio

Raymond Commandeur

Henri Mathais

Massimo Morbidelli

Giuseppe Storti

Sergio Carra'

Sergio Nebel

Guido Niederjaufner

The invention relates to a process for separating mixed monochlorotoluene isomers, which comprises a first stage of adsorption carried out by passing said mixture through at least one column filled with a zeolite, and a second stage of deadsorption from said zeolite carried out by passing two deadsorbents in succession in the vapor phase through the column.

Process for separating mixed monochlorotoluene isomers, a plant for

New compounds of the formula: ##STR1## where n, x, y and z have value 1 or 2, their process of preparation and their use as dielectrics such as insulating fluids for transformers alone or in mixture with one or more products of general formula: ##STR2## where a varies from 2 to 4, b varies from 0 to 2 and R is an aliphatic hydrocarbon radical containing from 1 to 3 carbon atoms.

Chlorinated alkylaromatic based compounds and new liquid dielectrics

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Brescia, Italy

Achille Pontoglio