Abstract: An improved process for the preparation of perfluoropropene oxide by the reaction of perfluoropropene with hydrogen peroxide in an aqueous alkaline medium is described. The improved process is characterized by carrying out the reaction in the presence of a phase-transfer catalyst selected from the group consisting of quaternary ammonium salts, phosphonium salts, and lipophilic complexing agents for cations, and by carrying out the addition of an aqueous solution of an inorganic base to the reaction mixture gradually so that a constant reaction temperature between -10.degree. C. and -60.degree. C. is maintained.

Abstract: A single-phase, either isotropic or anisotropic formulation is disclosed, which contains perfluorinated oil and one or more surfactant(s), is useful as an excipient for cosmetic and dermatologic formulations and is characterized in that at least one surfactant is selected from those having the following general formula: ##STR1## wherein: R.sub.F is an F--(CF.sub.2 --CF.sub.2).sub.i -- group;X is a group selected from: ##STR2## --(CH.sub.2 --O).sub.K --; and --(CH.sub.2 --S).sub.K --; wherein R.sup.I is a (C.sub.1 -C.sub.4)-alkyl;Y is a group selected from: NH.sub.2 (R.sup.II).sub.2 and N(R.sup.II).sub.4 ; wherein R.sup.II is a hydrogen atom, or a group selected from --CH.sub.2 --CH.sub.2 --OH and (C.sub.1 -C.sub.4)-alkyl;i is an integer comprised within the range of from 3 to 8;i is zero or 1;K is 2.l;l is an integer comprised within the range of from 1 to 10;m is 1 or 2.Such composition is spontaneously formed when the components are simply placed into contact with one another.

Abstract: Ionic organic collecting agents for the selective flotation of lead and zinc ores, said agents having the following general formula ##STR1## wherein the symbols employed have the meaning given below: R represents H, CH.sub.3, C.sub.2 H.sub.5, or an alkoxyalkyl group,R.sub.1 and R.sub.2, which can be the same or different, represent H, a linear or a branched alkyl group, an alkoxyalkyl group or a hydroxyalkyl group containing up to 12 carbon atoms;X represents H, Cl, Br, I, F, CN, CONH.sub.2, NO.sub.2 ;m represents H, Na, K, Li, Cs;as well as a process for the production of said collecting agents.

Abstract: Preparation of fluoroxy-halo-compounds by direct reaction between fluorine and organic compounds having a molecular structure in which at least one oxygen atom is directly bound to a carbon atom in the carbonylic form, in the presence of a fluorination catalyst, in gaseous phase, at an absolute pressure of between 50 and 800 kPa and at a temperature between -5.degree. and +100.degree. C., under conditions of a continuous feeding of the reactants and a continuous removal of the reaction product.

Abstract: Process for the preparation of 2-perfluoropropoxy-perfluoropropionyl fluoride by dimerization of hexafluoropropene epoxide in aprotic polar medium, in the presence of N,N,N',N'-tetrasubstituted diaminodifluoromethane as catalyst, characterized in that the dimerization reaction is carried out in the presence of a co-catalyst constituted by a nitrogenous organic base having structure of aniline, or of pyridine, or of a derivative thereof, wherein the nitrogen atom is not linked to hydrogen atoms and, in the case of the pyridine-type structure, it is sterically hindered by substituent groups on ortho-position relatively to it.

Abstract: Organic ionic collecting agents for the selective flotation of lead and zinc ores, said agents having the following general formula: ##STR1## wherein the symbols have the following meanings: R represents an alkoxyl group having from 3 to 12 carbon atoms;R.sub.1 represents H, a linear or branched chain alkyl group, an alkoxyl or hydroxyalkyl group containing up to 12 carbon atoms;X represents H, Cl, Br, I, F, CN, CONH.sub.2, NO.sub.2, SO.sub.2 NH.sub.2 ;M represents H, Na, K, Li, Cs.

Abstract: Silane quinacridone dyes, composite pigments obtainable therefrom by association with an inorganic substrate, and the processes for preparing them. The dyes have the general formula: ##STR1## wherein X is an --SO.sub.2 NHR group, where R is an alkyl group, linear or branched, having from 1 to 6 carbon atoms, a cycloalkyl group, a phenyl group optionally substituted by one or more alkyl or alkoxy groups (C.sub.1 -C.sub.6), a halogen;Y and Z indicate a silane group having the formula: ##STR2## wherein R.sub.1 is an alkoxy group (C.sub.1 -C.sub.2), R.sub.2 is an alkyl group (C.sub.1 -C.sub.4) or a phenyl group; n is 3, 4 or 5; q is 0 or 1; p and m are integers, such that when q is 1, p is 2 and m is 0, 1 or 2, and when q is 0, p is 3 and m is 0, 1, 2 or 3; W indicates an --SO.sub.3 H group; a, b and c are 0 or 1, selected in such a way that the sum a+b+c is equal to 1.

Abstract: Silane diimidic tetracarboxylic perylene dyes, the composite pigments obtainable therefrom by means of grafting onto an inorganic substrate, and the processes for preparing same.The dyes have the general formula: ##STR1## in which R is the residue of a silane group of formula: ##STR2## in which n is 3, 4 or 5; q is 0 or 1; p and m are such integers than when q is 0, p is 3 and m is 0, 1, 2 or 3, and when q is 1, p is 2 and m is 0, 1 or 2; R.sub.2 is an alkyl C.sub.1 -C.sub.4 or a phenyl; R.sub.3 is an alkoxyl C.sub.1 -C.sub.2 ; R.sub.1 may be the same as R or represent an alkyl C.sub.1 -C.sub.6, a cycloalkyl, a phenyl optionally substituted by one or more alkyl or alkoxyl groups C.sub.1 -C.sub.6 or a halogen.The dyes and the composite pigments obtained from said dyes are utilized in paints, air and stove enamels, in the pigmentation of plastic materials, and in printing inks.

Abstract: Silane diimidic tetracarboxylic perylene dyes, the composite pigments obtainable therefrom by means of grafting onto an inorganic substrate, and the processes for preparing same.The dyes have the general formula: ##STR1## in which R is the residue of a silane group of formula: ##STR2## in which n is 3, 4 or 5; q is 0 or 1, p and m are such integers than when q is 0, p is 3 and m is 0, 1, 2 or 3, and when q is 1, p is 2 and m is 0, 1 or 2; R.sub.2 is an alkyl C.sub.1 -C.sub.4 or a phenyl; R.sub.3 is an alkoxyl C.sub.1 -C.sub.2 ; R.sub.1 may be the same as R or represent an alkyl C.sub.1 -C.sub.6, a cycloalkyl, a phenyl optionally substituted by one or more alkyl or alkoxyl groups C.sub.1 -C.sub.6 or a halogen.The dyes and the composite pigments obtained from said dyes are utilized in paints, air and stove enamels, in the pigmentation of plastic materials, and in printing inks.

Abstract: This invention relates to organic dyes containing silane groups; composite pigments obtainable by grafting said dyes onto an inorganic substrate; and, the respective processes for preparing said dyes and composite pigments.The dyes have general formula: ##STR1## wherein R.sub.1 and R.sub.2, which may be equal or different, are selected from the group consisting of H, --NH.sub.2, --NHR wherein R is an alkyl group having from 1 to 4 carbon atoms or a phenyl group, --NHCOCH.sub.3, --NHCOC.sub.6 H.sub.5, --NO.sub.2, a halogen, --OH, --O--C.sub.6 H.sub.5 and --S--C.sub.6 H.sub.5 ; n is a number selected from 3, 4 and 5; W is selected from the group consisting of an alkyl group having from 1 to 4 carbon atoms and a phenyl group; Y is an alkoxy group having from 1 to 4 carbon atoms; q is a number selected from 0 and 1; X is 3 and m is a number selected from 0, 1, 2 and 3 when q is 0; x is 2 and m is a number selected from 0, 1 and 2 when q is 1.

Abstract: Silane quinacridone dyes, composite pigments obtainable therefrom by association with an inorganic substrate, and the processes for preparing them. The dyes have the general formula: ##STR1## wherein X is an --SO.sub.2 NHR group, where R is an alkyl group, linear or branched, having from 1 to 6 carbon atoms, a cycloalkyl group, a phenyl group optionally substituted by one or more alkyl or alkoxy groups (C.sub.1 -C.sub.6), a halogen; Y and Z indicate a silane group having the formula: ##STR2## wherein R.sub.1 is an alkoxy group (C.sub.1 -C.sub.2), R.sub.2 is an alkyl group (C.sub.1 -C.sub.4) or a phenyl group; n is 3, 4 or 5; q is 0 or 1; p and m are integers, such that when q is 1, p is 2 and m is 0, 1 or 2, and when q is 0, p is 3 and m is 0, 1, 2 or 3; W indicates an --SO.sub.3 H group; a, b and c are 0 or 1, selected in such a way that the sum a+b+c is equal to 1.

Abstract: There are described silanic phtalocyaninic dyes; composite pigments obtainable by grafting said dyes on an inorganic substrate, and, processes for preparing said dyes and said composite pigments.The dyes are of the following general formula: ##STR1## wherein: Pc is the residue of the phtalocyanine which may be metallized with a metal selected from the group consisting of Co, Ni and Cu; R.sub.1 is selected from the group consisting of H and alkaline metals; R.sub.2 and R.sub.3, equal or different, are selected from the group consisting of H, alkyls having up to 4 carbon atoms, cycloalkyls and aryls; R.sub.4 is selected from the group consisting of an alkyl with from C.sub.1 to C.sub.4 and phenyl; R.sub.5 is an alcoxyl C.sub.1 -C.sub.4 ; n is 3, 4 or 5; q is 0,1; p and m are such integers that when q is 0 p is 3 and m is 0, 1, 2 or 3, and when q is 1, p is 2 and m is 0, 1, 2; a and c are numbers in the range of 1 to 3 and b is a number in the range of 0 to 2, chosen in such a way that the sum a+b+c.ltoreq.

Abstract: There are described organic-inorganic ternary composite pigments consisting of 70%-90% by weight of an inorganic binary titanium dioxide/aluminum hydrate component and, from 10% to 30% by weight, of a co-precipitated organic component consisting of an organic dye, containing in its structure at least one carboxylic and/or sulphonic acid function, having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of NO.sub.2 --SO.sub.3 H and --COOH; R.sub.2 is selected from the group consisting of NO.sub.2, --SO.sub.3 H, alkyl and alkoxyl; R.sub.3 is selected from the group consisting of H, halogen and alkyl; R.sub.4 and R.sub.5 are each selected from the group consisting of H, halogen, alkyl and alkoxyl; R.sub.6 is selected from the group consisting of H, halogen and alkoxyl; and wherein the --COOH and/or --SO.sub.3 H group of dye (I) is salified with metal cations.