Ausimont

Montefluos S.p.a.

Alberto Fontana

Giovanni Moggi

Silvana Modena

Gianangelo Bargigia

Gianna Cirillo

Raffaele Ferro

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

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

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Milan, Italy

Alberto Fontana