Ausimont S.p.a.

Ausimont S.r.l.

Montefluos S.p.a.

Silvana Modena

Giovanni Moggi

Alberto Fontana

Walter Navarrini

Gianangelo Bargigia

Vito Tortelli

Claudio Tonelli

Ezio Strepparola

Mario Visca

Antonio Marraccini

Simonetta Antonella Fontana

Pierangelo Calini

Giorgio Bornengo

Gianna Cirillo

Raffaele Ferro

Michele Pontevivo

Giovanni Gavazzi

Surface treatments with bifunctional perfluoropolyether derivatives

Fluoroelastomeric compositions peroxy-curable, endowed with improved characteristics of processability and compatibility, and with enhanced low-temperature properties, comprising, as additives, vinylidene fluoride cotelomers having the general formula:

Curable compositions based on fluoroelastomers vulcanizable with

A continuous process for preparing perfluoroalkenyl sulfonyl fluorides (I)

Process for preparing perfluoroalkenyl-sulfonil fluorides

Process for preparing perfluoroalkenyl-sulfonyl fluorides

Perfluorobutadiene and higher alkandienes, with terminal double bonds, are obtained from .alpha.,.omega.-dibromo, .alpha., .omega.,bromo, iodo perfluoroalkanes by dehalofluorination carried out with the aid of an organometallic compounds, in the presence of aprotic solvent belonging to the class of hydrocarbons or polar aprotic solvent belonging to the class of ethers, with limited reaction times.

Process for the synthesis of perfluoroalkandienes

A process for preparing bromodifluoroacetylfluoride characterized in that a gaseous stream of oxygen-diluted ozone is reacted, at temperatures ranging from -100.degree. C. to +80.degree. C., with 1,4-dibromohexafluorobutene-2 optionally dissolved in a solvent which is inert under the reaction conditions, with consequent obtainment of the corresponding ozonide and, subsequently, the ozonide is subjected to a heat treatment at temperatures ranging from 100.degree. to 300.degree. C., with consequent obtainment of bromodifluoroacetylfluoride.

Process for preparing bromodifluoroacetylfluoride

A process for fluorinating hydrogenated ethereal compounds by direct reaction with elemental F.sub.2 diluted with an inert gas, wherein the starting compound is in the liquid phase, said fluorination being carried out in the presence of a per fluoropolyetheral compound and of an alkaline metal fluoride.

Process for preparing perfluoroethers by fluorination with elemental

There are prepared compounds of general formula: ##STR1## wherein: R.sub.1 =H, or alkyl or acyl containing from 1 to 10 carbon atoms, R.sub.2, R.sub.3, like or unlike each other, may be H, or an alkyl containing from 1 to 10 carbon atoms and where R.sub.1 and R.sub.2 may form, together, an alkylene group containing from 2 to 10 carbon atoms, and optionally including up to 2 oxygen atoms in the chain, by means of addition reaction induced by radicalic starters of 1,2-dichlorodifluoroethylene to alcohols, ethers or esters of general formula: ##STR2## wherein: R.sub.1, R.sub.2, R.sub.3 are defined as above.

Process for preparing adducts of alcohols, ethers and esters with

Cotelomers of vinylidene fluoride with one or more fluoro olefins, having the general formula

Cotelomers of vinilydene fluoride with fluorinated olefins and process

A process for the preparation of fluoroalkyl ethers of the formula: ##STR1## wherein: Y is Br or F;

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Monza, Italy

Silvana Modena