Abstract: Substituted arylamine dye intermediates and their preparation are disclosed.

Abstract: This invention relates to novel dye salts of basic dyes or basic optical brighteners and anionic esters of boric acid. The invention also includes the preparation of the aforementioned novel dye salts.

Abstract: The present invention relates to concentrated solutions in organic solvents of special mixtures of 1-4-dialkyl-amino-anthraquinone dyes particularly useful for the coloring of hydrocarbons. The solutions of this invention are particularly useful for the coloring of hydrocarbons obtained by distillation of crude oil such, for example, as petrol kerosene and gas oil. The invention also includes the preparation of the aforementioned concentrated solutions, including direct preparation of the solutions during the synthesis phase of the anthraquinone dyes.

Abstract: Yellow pigments having a greenish hue are represented by the formula: ##STR1## wherein X.sub.1 and X.sub.2 may be the same or different from one another and each is hydrogen, halogen (chlorine, fluorine or bromine), lower alkyl or alkoxy having from 1 to 3 carbon atoms; and wherein R.sub.1 and R.sub.2 may be the same or different from one another and each is the residue from an acyl-acetyl-amino-aromatic coupling agent or the residue from a pyrazolone coupling agent. Pigments are obtained by coupling of (1) an aceto-acetyl-amino-aromatic compound or (2) of a pyrazoline, with a 4,4'-diamino-benzanilide. The yellow pigments have the characteristic of having a high tintorial yield, a high degree of purity of tone (brightness), a good fastness to light, and good resistance to organic solvents. These pigments are particularly useful in the polychrome graphic industry.

Abstract: 3-Diazonium salts of pyrazole, useful as intermediates in the preparation of azo dyes are obtained by an oxidative diazotization of 3-amino-pyrazolines with nitrous acid or with nitrosyl-sulphuric acid. The 3-diazonium salts of pyrazole have the following structure: ##STR1## wherein: X is a radical --CO-- or --COO--,n is 0 or 1,R is hydrogen (in such case n is always 0), a normal or ramified alkyl C.sub.1 --C.sub.4, an aromatic or heterocyclic, optionally substituted, radical, in particular a phenyl radical having the structure: ##STR2## in which m may vary from 0 to 3 and substituents R.sub.3, either like or unlike one another for m>1, are alkyls C.sub.1 --C.sub.4 with linear or ramified chain, halogens, a cyano, nitro, sulphonic or carboxylic group, carboxyesters having a linear or ramified chain C.sub.1 --C.sub.4, alkoxyls having a linear or ramified chain C.sub.1 --C.sub.4, trifluoro-methyl groups, acylamino groups having a linear or ramified aliphatic chain C.sub.1 --C.sub.

Abstract: The present invention relates to the synthesis of new dyes having the following general formula: ##STR1## wherein: D is the residue of a diazotizable component of the carbocyclic or heterocyclic seriesX is an ethylene group, optionally substituted by halogen-methyl, alkyl C.sub.1 -C.sub.4, aryl, aralkyl or CH.sub.2 OCO(HN).sub.n R (wherein R and n have the meanings hereinafter defined);R is alkyl C.sub.1 -C.sub.8 optionally substituted by halogen, CN,COOH; aryl optionally substituted by one or more atoms of halogen, alkyl C.sub.1 -C.sub.4, alkoxyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.8 ; Aryloxy; aralkoxy; cycloalkoxy; aralkyl; naphthyl optionally substituted by halogen; alkenyl C.sub.2 -C.sub.8, optionally substituted by halogen, CN, COOH;R.sup.1 and R.sup.2, either like or unlike each other, may be alkyl C.sub.1 -C.sub.4 optionally substituted by halogen or CN groups; aralkyl;R.sup.3 is H; halogen, alkyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.4, optionally substituted.

Abstract: The present invention concerns a new acid trisazo dye suited for the dyeing of natural and synthetic polyamidic fibres and particularly for the dyeing of leather. The dye has the following structural formula: ##STR1## and dyes in a full black shade. The present invention also includes a process for the preparation of dye (I) and comprises tetrazotizing 4-4' diaminoazobenzene and then coupling the tetrazo-compound thus formed with 2 molecules of 2-carboxymethylamino-8-naphtol-6-sulphonic acid (carboxy methyl-gamma acid) in an alkaline medium.

Abstract: There is provided a process for the dyeing and printing of polyester textile fabrics with different shaded color effects on one or both sides of the fabric, comprising contacting the polyester fabric as such or having been previously dyed in light pastel shades, with an aqueous dye bath containing at least one hydrophobizing substance, drying the so-treated fabric, printing on one or both sides thereof with disperse dyes and affixing the dyes to the surface by thermosoling.

Abstract: This invention relates to a class of disazo dyes that are useful to dye and print water-swellable cellulose material and blends thereof with synthetic materials, and, in particular, to dye and print polyester-cotton blends.More particularly, the process of this invention relates to a process or method for dyeing and printing fabrics of water-swellable cellulose material and blends thereof with synthetic materials, in particular polyester-cotton mixed fibres, such process comprising the dyeing and printing of the material in the presence of water and of a high-boiling solvent, capable of maintaining cellulose in the swollen state at the application temperature, with disazo dyes having general formula (I): ##STR1## wherein: X.sub.1 =a hydrogen, alkyl or alkoxyl having 1 to 4 atoms of carbon, chlorine, bromine, --CN, --NHCOR.sub.1, --NHCO--Ar, --COOR, --CON(R.sub.1).sub.2, --NO.sub.2 ;X.sub.2 =a hydrogen, alkyl or alkoxyl having 1 to 4 atoms of carbon, chlorine, bromine, --NHCOR.sub.1, --NHCO--Ar;X.sub.

Abstract: Novel monoazo dyes (sparingly soluble in water) which are free of sulphonic groups and which contain an aliphatic-carboxylic chain directly bound to the aryl nucleus of the coupling compound are particularly useful in uniformly dyeing polyamide fibers and/or fabrics yellow to orange-yellow.

Abstract: Novel monoazo dyes (sparingly soluble in water) which are free of sulphonic groups and which contain an aliphatic-carboxylic chain directly bound to the aryl nucleus of the coupling compound are particularly useful in uniformly dyeing polyamide fibers and/or fabrics yellow to orange-yellow.

Abstract: A water-soluble triazo dyestuff of the formula: ##STR1## The dyestuff, which is useful in dyeing cotton and other cellulosic fibers, is prepared by diazotizing 2-aminophenol-4-sulfonic acid, coupling the diazotized sulfonic acid with resorcinol, treating the reaction mixture with a copper complexing agent at 35.degree.-40.degree. C and a pH of 5-5.5, separately tetraazotizing 4,4'-diaminobenzanilide, coupling the tetraazotate with the previously formed reaction product to form a diazo-disazoic reaction product, and coupling the latter product with m-aminophenol to produce the desired dyestuff.

Abstract: New direct dyes which can be diazotized on fibers and have the general formula ##STR1## are disclosed. In the formula, A and B, which are different from each other, are amino-naphtholsulphonic acids. A process for making the new dyes by coupling one mole of a tetrazo derivative of 4,4-diamino-azobenzol with a mixture containing substantially one mole of the amino-naphtholsulphonic acid A and one mole of the different amino-naphtholsulphonic acid B, in an alkaline medium, is also enclosed.

Abstract: Azo dyes which are highly soluble in organic solvents are disclosed. The dyes have the general formula ##STR1## in which M = 1 TO 3;n = 1 or 2;X = h or NO.sub.2 ;Y = h, cl, NO.sub.2, lower alkyl or lower alkoxy radicals containing from 1 to 3 carbon atoms;Z and Z' = H, Cl, lower alkyl or alkoxy radicals containing 1 to 3 carbon atoms, or lower acylamine groups;R' = alkyl or ##STR2## R" = H, or a lower alkyl radical containing 1 to 3 carbon atoms; R'" = an alkyl radical containing from 1 to 18 carbon atoms, or a cycloalkyl radical.The aromatic nuclei A, B, and C may have other water-insoluble substituents.Organic solvent solutions of the azo dyes are provided, as are, also, processes for obtaining the dyes.

Abstract: 7-OXO-7H-dibenzo-[d e,h]-quinolin-2-ol which is useful as an intermediate in the preparation of dyestuffs is prepared by cycloisomerizing the novel compound, N-phenylacetyl phthalimide in an inert solvent and in the presence of a Friedel-Crafts catalyst to form the novel compound O-(3-hydroxy-1-isoquinolinyl)-benzoic acid which is then cyclized by dehydrating condensation to form the 7-oxo-7H-dibenzo-[d e,h]-quinolin-2-ol.

Abstract: 7-OXO-7H-dibenzo-[d e,h]-quinolin-2-ol which is useful as an intermediate in the preparation of dyestuffs is prepared by cycloisomerizing the novel compound, N-phenylacetyl phthalimide in an inert solvent and in the presence of a Friedel-Crafts catalyst to form the novel compound O-(3-hydroxy-1-isoquinolinyl)-benzoic acid which is then cyclized by dehydrating condensation to form the 7-oxo-7H-dibenzo-[d e,h]-quinolin-2-ol.

Abstract: Sulphonated azoic dyestuffs of the formula: ##SPC1##Are useful in dyeing cotton, other cellulosic fibers, natural and synthetic polyamide fibers and leather.

Abstract: 1-AZA-2-HYDROXYBENZANTHRONE, USEFUL AS AN INTERMEDIATE FOR SYNTHESIZING DYES IS OBTAINED BY THE DIRECT REACTION OF ALKYL ESTERS OF ANTHRAQUINONE-1-ACETIC ACID WITH AMMONIA IN HYDROXYLATED SOLVENTS AND IN THE PRESENCE OF STRONG BASES AND/OR REDUCING SUBSTANCES.

Abstract: Hydrosoluble, cationic, azo dyes of the formula: ##SPC1##Wherein:R is an alkyl or aralkyl group;R' is an alkyl group having from 1 to 4 carbon atoms;R" is H, an alkyl group having from 1 to 4 carbon atoms or a halogen;R'" is an alkyl group having from 1 to 4 carbon atoms or a C.sub.1 -C.sub.4 alkyl group substituted by a halogen, cyano, hydroxy, alkoxy or acyloxy group;Y is a cyano, amido, acyloxy or carboalkoxy group; andX is an anion, are obtained by:A. diazotizing a 2-amino-6-alkoxybenzothiazole of the formula (II): ##SPC2##b. coupling the resultant diazo compound in an acid solution with a tertiary amine of the formula (III): ##SPC3##wherein R', R", R'" and Y are as defined above; andC. quaternizing the resultant dye.