PROCESS FOR THE PREPARATION OF HYDROFLUOROALKANES

Process for the preparation of hydro(halo)fluoroalkanes by direct fluorination in liquid phase with elemental fluorine at low temperature (under 0 DEG C.) of the corresponding hydro(halo)=alkenes

Correlation between yield and operating conditions in the electrochemical fluorination of tripropylamine

Electrochemical fluorination of tripropylamine in anhydrous hydrogen fluoride was studied in order to verify the correlation between the operating conditions and the yield of the corresponding perfluoroamine. The parameters tested were: temperature, voltage, initial concentration of amine in the bath, constant concentration of amine in the bath and stirring effect. Experimental data show that temperature is the parameter exerting the most remarkable influence over perfluoroamine yield and by-products formation

Bianco come il sangue: il sangue artificiale

E' una lontana aspirazione dell'uomo quella di poter sostituire il sangue naturale con prodotti sintetici in grado di esplicare le stesse funzioni. La soluzione \ue8 stata trovata dalla chimica dei prodotti flururati per le loro propriet\ue0 caratteristiche di sciogliere i gas in forti proporzioni, di essere chimicamente inerti e di essere metabolizzati

Determinazione dei calori di formazione e di nitrazione del 3-nitro-4-clorobenzotrifluoruro e del 3,5dinitro4-clorobenzotrifluoruro.

I calori dii nitrazione di mono e dinitrazione del p-clorobenzotrifluoruro sono determinati conducendo le reazioni di nitrazione e confrontati con quelli ottenuti dai calori di combustione in calorimetro di Mahler

Produzione del p-clorotoluene mediante processo in continuo. Studio per il miglioramento del rapporto para/orto nella miscela di reazione

Venezi

Synthesis of some fluoro-hydrocarbons and their performance as surface agents in a non-aqueous medium

Some fluoro-hydrocarbons having the typical structure RF-RH can be prepared by addition of perfluoroalkyl iodides (RFI) to olefins (CH2\ue5fbCH\ue5f8R\u2032H) by the method suggested by N.O. Brace [1] : RFI + CH2\ue5fbCh\ue5f8RH \u2192 RFCH2CHI-R\u2032H \u2192 RFCH2CH2R\u2032H Starting from the linear perfluoroalkyl iodides C6F13I and C8F17I, and prepared: C6F13C17, C6F13C12H25, C6F13C16H33, C8F17C12H25 and C8F17C16H33. These compounds were tested in a liquid as surface agents; measurements of the surface tension were carried out at various concentrations and temperatures (20 \ub0C, 30 \ub0C and 50 \ub0C). Some of the compounds tested i.e., C6F13C16H33) also at the highest temperature shown a poor solubility in the parraffin used. A remarkable drop of the surface tension values was shown by C8F17H33 at 20 \ub0C. Experimental data and surface tension vs concentration diagrams are reported

Process for the preparation of halobenzoic acids

A new process for the preparation of halobenzoic acids and in particular fluorobenzoic acids is based on reaction between the corresponding halobenzyl chlorides and sodium hypochlorite. The new process makes it possible to obtain halobenzoic acids in a single stage reaction using cheap and/or easily obtained reagent