Abstract: 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.

Abstract: A process for preparing vinylidene fluoride homopolymers having low molecular weight and its copolymers by carrying out the polymerization in the presence of a radical initiator at a temperature ranging from 20.degree. to 160.degree. C. in a solvent of general formula R--COO--R.sub.1, wherein R is hydrogen or an alkyl radical having up to 4 carbon atoms and R.sub.1 is an alkyl radical with up to 5 carbon atoms.

Abstract: Compositions suitable to be used for washing of industrial materials, comprising, by weight:63-99% of 1,1,2-trichloro-1,2,2-trifluoroethane0.5-25% of water0.5-12% of a mixture consisting of 80-97% by weight of a compound of formula (I) and of 20-3% by weight of a compound of formula (II)R--C.sub.6 H.sub.5 --SO.sub.3 H.A (I)wherein:R=an alkyl group C.sub.9 -C.sub.15A=an aliphatic or cyclic amineX--(CO).sub.n --OH (II)wherein:n=0 or 1X=an alkyl or an alkenyl group, C.sub.6 -C.sub.25.

Abstract: There is proposed a process for the purification of fluorinated lubricants, free from hydrogen, such as perfluorinated ethers or chlorofluorocarbons, whose elimination can be dangerous for the environment owing to the fluorine release, such a process consisting in dissolving the lubricant in a fluorochlorinated hydrocarbon, then in precipitating by means of a grease solvent, in separating, in degasing and finally in filtering in order to remove the mechanical impurities.

Abstract: There are described a new class of organic dyes containing silane groups, the composite pigments obtainable therefrom by associating them with a substrate (SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3), and the processes for preparing same.The silane organic dyes have the formula (I): ##STR1## wherein all substituents are defined later. The silane dyes (I) are utilized per se for dyeing natural fibres, such as wool, and man-made fibres, such as the polyamide, polyester, polyacrylic fibres and the like, while the composite pigments prepared from said dyes by association with an inorganic substrate are employed in paints, air enamels and stoving enamels, in the pigmentation of plastics, in the inks, in the printing of textiles etc.