Ausimont S.p.a.

Montedison S.p.a.

Ausimont S.r.l.

Montedipe S.p.a.

Guglielmo Gregorio

Giorgio Guglielmo

Pierangelo Calini

Mario Padovan

Julio A Abusleme

Giuseppe Marchionni

Ezio Strepparola

Giuseppe Paparatto

Ugo De Patto

Giuseppe Braca

Glauco Sbrana

Lamberto Roberti

Arsenio Castellan

Giorgio Montrasi

A process for preparing the novel compound 2-bromo, 1', 2'-dichloroperfluoro diethyl ether of formula:

2-bromo,1',2'-dichloroperfluoro diethyl ether and process for preparing

Branched aliphatic hydrocarbons, having from 6 to 25 carbon atoms and a ratio between the number of methyl groups and the number of carbon atoms higher than 0.5, are used in radical (co)polymerization processes of fluorinated olefinic monomers, optionally in association with non-fluorinated olefins, both in suspension and in aqueous emulsion. Such hydrocarbons are characterized, in the usual reaction conditions, by a chain transfer effect practically absent.

Radical (co)polymerization process of fluorinated olefinic monomers

This invention relates to a process for preparing fluoropolyethers and perfluoropolyethers having neutral and/or functional end groups and a lower molecular weight by a selective catalytic cleavage of the corresponding higher molecular weight fluoropolyethers and perfluoropolyethers, characterized in that said cleavage is carried out by operating in the presence of a catalyst system consisting of a combination of silicon dioxide with at least an oxide, a fluoride or an oxyfluoride of a metal selected from Al, Ti, V, Cr, Co. Fe, Ni, Mo, Zn, Cu, Cd, Mn, Sb, Sn, Zr, Sc, Y, La and homologs thereof, Pb, Mg, W.

Process for preparing fluoropolyethers and perfluoropolyethers having

A process for oxidizing fluorinated olefins to the corresponding epoxides by reacting a fluoroolefin with oxygen in a concentration, in the reaction mixture, ranging from 1 to 60% by volume, at a temperature up to 250.degree. C. and in the presence of a catalyst consisting of porous silicon dioxide in a crystalline form, with a high purity degree and carrying metal oxides of the first transition series, or copper oxides or lanthanide oxides or mixtures thereof.

Process for oxidizing fluorinated olefins and catalysts useful for the

The invention relates to a process for preparing methacrylates of fluorinated alcohols, which consists in reacting said alcohols with an excess of methacrylic acid in the presence of phosphoric anhydride, which acts as a catalyst and absorbs the water which has formed. The process is applicable to primary, secondary and tertiary fluorinated alcohols and to alcohols and diols with perfluoroethereal chains.

Process for preparing methacrylates of fluorinated alcohols

A process for the manufacture of iodine, in the presence of a catalyst selected from copper, gold, a transition metal or a compound thereof, characterized in that an aqueous solution of an alkali metal iodide is oxidized--with oxygen, air or other oxygen containing gase--in the presence of carbon dioxide (an alkali metal carbonate and/or bicarbonate being thus formed). Iodine is generally obtained by oxidation of alkali metal iodides comping from a natural source, such as those contained in Chilean nitrates or in other salt deposits (sea-water included), or having an industrial origin; in the latter case the alkali metal iodide is generally the effluent of different processes which contemplate iodine recovery for economic reasons.

Process for the manufacture of iodine

The new compound bromofluoroethylhypofluorite, having the formula CF.sub.2 BrCF.sub.2 OF is obtained by starting from ##STR1## by the reaction in gaseous phase with fluorine, in the presence of a catalyst constituted by CsF on a support constituted by copper (or by another metal) in the form of a porous material having a surface area of at least 0.1 m.sup.2 /g.

Bromofluoroethylhypofluorite and process for its preparation

Process for the preparation of chloro-oxy-halo-compounds by means of the direct reaction between FCl and organic compounds having a molecular structure wherein an oxygen atom is directly linked to a carbon atom in the carbonyl form, in the presence of a catalyst constituted by an alkali metal or alkali-earth metal fluoride, preferably selected from K, Rb, Cs, Ba, Sr, the reaction being carried out in the gas phase and in continuous.

Process for the preparation of perhalohydrocarbon hypochlorites

A process is disclosed for preparing esters having the general formulae:

Process for preparing esters from ethers or esters of lower homologous

Complexes of transition metals with organic ligands are recovered from raw reaction products containing the complexes, and in particular such complexes of rhodium with tertiary phosphines are recovered from raw hydroformylation products. The raw hydroformylation product (or if such product is subjected to distillation, the tails of the distillation) are treated with an aqueous solution of an aldehyde having from 1 to 4 carbon atoms and of a strong acid and the solid rhodium complex thus formed is separated by filtration.

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Milan, Italy

Guglielmo Gregorio