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.

Abstract: Novel composite pigments containing both organic and inorganic portions have been produced.These pigments consist of an inorganic binary titanium dioxide/aluminum hydrate component, in a percent quantity comprised between 70% and 95% by weight, the remaining organic component amounting to between 5% and 30% by weight, consisting of an organic dye selected from the group consisting of azoic and quinophtalonic compounds, containing in their structure at least one carboxylic and/or sulphonic, substantially salified, acid function.The pigments are obtained according to a co-precipitation process, under substantially alkaline controlled pH conditions, of the acid organic dye together with the aluminum hydroxide (hydrated aluminum), by acidification of a solution and/or an aqueous dispersion of the acid organic dye in sodium aluminate, in the presence of titanium dioxide, at from 40.degree. C. to about 80.degree. C.

Abstract: This invention relates to a class of water-soluble acid azo dyes, containing at least a sulphonic group, having formula (I): ##STR1## wherein the symbols have the following meanings: A is a residue of a diazotizable aromatic or heterocyclic amine, optionally substituted;R is selected from the group consisting of H, CH.sub.3, OCH.sub.3 and OC.sub.2 H.sub.5 ;R.sub.1 is selected from the group consisting of CH.sub.3 and C.sub.2 H.sub.5 ;R.sub.2 is selected from the group consisting of CH.sub.3 and C.sub.2 H.sub.5.The dyes which are the object of the present invention exhibit shades varying from yellow to blue and are useful for dyeing and printing natural polyamide fibres (wool and silk) and synthetic fibres (nylon). They possess an excellent affinity in both an acid bath and a neutral bath and an excellent tinting power. The dyes obtained are characterized by a remarkable purity of shade, by an excellent stability to sunlight, to washing and to sweat, as well as by a good equalizing power on nylon.

Abstract: The present invention relates to a new class of compounds belonging to the anthraquinone series, having the general formula: ##STR1## wherein R, R', R", R'", R' are indifferently H or Chlorine, ##STR2## Such compounds exhibit a color varying from yellow to violet depending on the nature and position of substituents R, R', R", R'", R'.sup.v and, in virtue of their excellent stability characteristics, they are particularly useful as pigments and vat dyes.This invention relates furthermore to the preparation of compounds having general formula (I) and to the utilization thereof, particularly in the following applications:Pigmentation of plastic materials, such as polyvinyl chloride, polystyrene, polyolefins, polymethylmethacrylate, polycarbonates and ABS copolymers (acrylonitrile-butadiene-styrene);Pigmentation of varnishes, stoving enamels, inks and pastes for the printing of textiles;Vat dyeing of cellulose fibres such as cotton, flax, rayon.

Abstract: There is provided a new azoic dye having the general formula ##STR1## wherein: A is an aromatic radical of the benzene class which has been substituted with at least one group selected from among alkyl, alkoxyl, N-dialkylamine, halogen, cyano and nitro;X is selected from the group consisting of NH and O;R.sub.1 is selected from the group consisting of H, CH.sub.3, OCH.sub.3 and Cl;R.sub.2 is selected from the group consisting of H, CH.sub.3, OCH.sub.3, Cl;R.sub.3 is selected from the group consisting of CH.sub.3 and C.sub.2 H.sub.5 ; andR.sub.4 is the same as R.sub.3, such dye being useful in the printing and dyeing of the textiles, particularly hydrophobic synthetic fibers such as polyester fibers.

Abstract: The known compounds of the formula: ##STR1## wherein X is hydrogen or bromine, Y is hydrogen, chlorine, bromine or methyl and the -COOH group is meta or para to the azo group have been found to be useful in uniformly dyeing polyamide fibers to a yellow shade.

Abstract: A plastosoluble fluorescent organic dye is disclosed that is derived from benzanthrone, and having the general formula: ##STR1## wherein X = --H or --Br; and Y = --H, --OCH.sub.3 or --OC.sub.2 H.sub.5. A process for the preparation of a dye of the general formula (I) is also disclosed. These dyes are useful in the bulk dyeing of polystyrene, polymethylmethacrylate, rigid PVC, polyethylene, acrylonitrile/butadiene/styrene copolymers, polycarbonates or mineral oils.

Abstract: A fluorescent azabenzanthronic dye is disclosed having the general formula (I): ##STR1## wherein X = --NH-- or --S--; and Y = --OCH.sub.3 or --OC.sub.2 H.sub.5. A process for the preparation of a dye of the general formula (I) is also disclosed. These dyes are useful in the bulk dyeing of polystyrene, polymethylmethacrylate, rigid PVC, polyethylene, acrylonitrile/butadiene/styrene copolymers, polycarbonates or mineral oils.