Abstract: A preparation for use in a hair bleaching composition consists of 30 to 65% by weight of a persulfate granulate having granule diameters from 0.1 to 0.6 cm and at least one other granulated substance including 15 to 45% by weight of granulated alkaline reacting alkali metal salts. The other granulated substance also has particle diameters from about 0.1 to 0.6 cm. It can also contain 0.1 to 3% by weight of a chelating agent, 0.1 to 15% by weight of an anionic, cationic or nonionic surfactant and a water-soluble thickener. The two component composition contains an aqueous solution which is 4 to 18% by weight hydrogen peroxide and the preparation containing the granulated persulfate. Prior to application on the hair the hydrogen peroxide solution is mixed with the preparation.

Abstract: The process for bleaching hair using light includes first, applying a sufficient quantity of a composition containing at least one optical photosensitizer and a compound capable of providing a hydrogen radical to strands of the hair to be bleached and allowing the composition to act for up to 60 minutes on those strands; then, irradiating them with light of a wavelength or wavelengths selected from visible and ultraviolet wavelength ranges capable of activating the at least one optical photosensitizer and having an intensity sufficient for bleaching them, and subsequently rinsing and drying the bleached hair. This process does not require excess hydrogen peroxide and is thus particularly gentle to the hair.

Abstract: The composition for the oxidative dyeing of hair contains at least one coupler substance of the formula ##STR1## where R is a straight-chain or branched C.sub.1 - to C.sub.4 -alkyl group and X is fluorine or bromine, and new 5-halogen-2,4-diaminoalkylbenzenes.The coupler substances of formula (I) are obtainable by simple chemical reactions, easily soluble in water and have a good shelf stability particularly as constituents of the hair dye composition described here.In addition to the multitude of color shades, the dye results which can be achieved with the hair dye composition according to the invention are distinguished particularly by the intensity of color of the red tones and good uniformity of color of the blue tones.

Abstract: A composition for dyeing hair containing 2,5-diamino-6-nitropyridine, a solvent which is preferably water, a surfactant and at least one cosmetic additive selected from the group consisting of thickeners; care agents; perfume oils; complexing agents; oxidation hair dyes; and direct hair dyes; preservatives; a pH-adjusting member selected from the group consisting of ammonia, monoethanol amine and triethanol amine; and a polymer selected from the group consisting of chitosan derivatives, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, polyacrylonitrile, polyvinyl lactam and copolymers thereof.

Abstract: A process is disclosed for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitro-benz ene, by means of a two-stage technique proceeding from the reaction product of 1,4-diamino-2-nitrobenzene with chloroformic acid chloroethyl ester, or by means of a multiple-stage technique which is based upon an improved process for the production of the pre-stage 4-ethylamino-1-[(2'-hydroxyethyl)-amino]-2-nitro-benzene through sulfuric acid splitting off of 4-(N-ethylarylsulfonamido)-1-[(2'-hydroxyethyl)-amino]-2-nitro-benzene.

Abstract: Composition for the oxidative dyeing of hair based on a combination of developer substances and coupler substances contains, as developer substance, a diaminopyrazol of the general formula (I), ##STR1## wherein R.sup.1, R.sup.2 and R.sup.4 are identical or different and designate hydrogen, alkyl with 1 to 4 carbon atoms, hydroxyalkyl with 2 to 4 carbon atoms, benzyl or phenyl, and R.sup.3 is hydrogen, alkyl with 1 to 4 carbon atoms, hydroxyalkyl with 2 to 4 carbon atoms, with the proviso that the amino groups are in 3,4 or 4,5 position, or its physiologically tolerated, water-soluble salt, new diaminopyrazol derivatives of the above general formula I are also described herein in which R.sup.1 is methyl or benzyl and the R.sup.2 and R.sup.4 are either benzyl, phenyl, hydrogen, alkyl with 1 to 4 carbon atoms or hydroxyalkyl with 2 to 4 carbon atoms and R.sup.3 is either hydrogen, alkyl with 1 to 4 carbon atoms or hydroxylakyl with 2 to 4 carbon atoms.

Abstract: The composition for dyeing hair yellow contains 2-nitroaniline derivatives of the general formula I: ##STR1## in which, R.sup.1 and R.sup.2 represent, independent of one another, hydrogen an alkyl of 1 to 4 carbon atoms, a monohydroxyallkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, provided that R.sup.1 and R.sup.2 do not simultaneously represent alkyl groups of 1 to 4 carbon atoms, and X denotes an alkyl, monohydroxyalkyl, perfluoroalkyl or halogen. Also disclosed are new 2-nitroanitrile derivatives of the general formula II: ##STR2## in which R.sup.a and R.sup.b denote, independent of one another, ethyl, a monohydroxylalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, when Z is methyl, Cl or Br; or when Z is CH.sub.2 OH or a perfluoroalkyl, R.sup.a denotes hydrogen, a monohydroxyalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, and R.sup.b represents 2-hydroxyethyl or 2,3-dihydroxypropyl.

Abstract: The method of dyeing hair comprises applying to the hair a dye containing a 2,6-dinitro-aniline derivative having the general formula (I) ##STR1## wherein R represents H, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 monohydroxy alkyl or C.sub.3 -C.sub.4 -dihydroxy alkyl and X represents one of the radicals C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 monohydroxy alkyl, C.sub.1 -C.sub.4 perfluoro alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 monohydroxy alkoxy, C.sub.3 -C.sub.4 dihydroxy alkoxy or halogen. The present invention also comprises hair dyes containing at least one compound having the formula (I) and novel 2,6-dinitro-aniline derivatives. The dyes having the formula (I) have good physiological properties and provide all the yellow shades required for dyeing from a bluish-tinged lemon-yellow via a pure yellow to red-orange.

Abstract: Compositions for oxidative dyeing of hair based on 4-aminophenol derivatives of the formula (I): ##STR1## or their physiologically compatible water soluble salts, wherein R is selected from the group consisting of alkyl groups with from one to four carbon atoms, monohydroxyalkyl groups with from two to four carbon atoms, aminoalkyl groups with from two to four carbon atoms, aminoalkyl groups having amino groups substituted with from one to two alkyl groups having from one to four carbon atoms and dihydroxyalkyl groups with from three to four carbon atoms. New developer substances include 4-amino-2-propoxymethyl phenol, 4-amino-2-isopropoxymethyl phenol and 4-amino-2-(2'-hydroxyethoxymethyl)-phenol. The developer substances of the formula I have physiologically improved properties with equally good dyeing properties as the p-aminophenol used up to now in the red region of the spectrum.

Abstract: The hair dyeing composition in the form of an aqueous solution, an aqueous-alcoholic solution, a cream, a gel, a mixture which can be sprayed or an emulsion contains from 0.01 to 2.0% of a 2,6-Dinitro-phenol derivative of the formula (I): ##STR1## wherein X represents a member selected from the group consisting of alkyl groups containing one to four carbon atoms, monohydroxyalkyl groups containing one to four carbon atoms, perfluoroalkyl groups containing one to four carbon atoms, alkoxy groups containing one to four carbon atoms, monohydroxyalkoxy groups containing two to four carbon atoms, dihydroxyalkoxy groups containing three to four carbon atoms and halogens, and one or more cosmetic additives selected from the group consisting of glycerin, glycols, glycol ethers, hair car materials, wetting agents and emulsifiers, thickeners, softeners, preservatives, complexing agents and perfumes. The dyes of the formula (I) have good physiological properties and provide a variety of yellow shades.

Abstract: The process of making 4-chloro-2-methyl-5-nitro phenol (I) ##STR1## comprises nitrating a 4-chloro-2-methyl-phenyl sulfonate of the formula (II) at the 5 position ##STR2## in which R is a residue selected from the group consisting of methyl-, ethyl-, trifluoromethyl-, phenyl- and tolyl and the sulfonyl residue comprises --SO.sub.2 R at the position 5 to form 4-chloro-2-methyl-5-nitro-phenyl-sulfonate and then cleaving the sulfonyl residue of the 4-chloro-2-methyl-5-nitro-phenyl-sulfonate to form the 4-chloro-2-methyl-5-nitro-phenyl. The process uses technically available and economical starting materials and allows an isomerically pure product to be made in very good yield.

Abstract: A process for producing 2,5-diamino-6-nitropyridine derivatives having the general formula (I) ##STR1## wherein R.sup.1 to R.sup.4 represent hydrogen or the radicals alkyl, hydroxy alkyl, dihydroxy alkyl, alkoxy alkyl, alkoxy carbonyl, hydroxy- or chlorine-substituted alkoxy carbonyl, aminoalkyl and aminoalkyl substituted by alkyl or hydroxy alkyl groups, the alkyl groups in each case containing 1 to 4 carbon atoms or an oxazolidinone ring being formed by R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4. The present invention also relates to novel 2,5-diamino-6-nitropyridine derivatives and to a hair dyeing agent containing 2,5-diamino-6-nitropyridine derivatives, which are direct nitro dyes coloring the hair yellow orange to blue violet and are physiologically harmless.

Abstract: The compound 4-(N-ethyl-N-2'-hydroxyethyl)-amino-1-(2"-hydroxyethyl)-amino-2-nitrobenze ne, having the formula: ##STR1## is provided for use as a blue coloring nitro dye in a hair dyeing composition that may be directly applied to hair without the use of oxidation agents.

Abstract: A process is disclosed for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitrobenze ne, by means of a two-stage technique proceeding from the reaction product of 1,4-diamino-2-nitrobenzene with chloroformic acid chloroethyl ester, or by means of a multiple-stage technique which is based upon an improved process for the production of the pre-stage 4-ethylamino-1-[(2'-hydroxyethyl)-amino]-2-nitrobenzene through sulfuric acid splitting off of 4-(N-ethylarylsulfonamido)-1-[(2'-hydroxyethyl)-amino]-2-nitrobenzene.

Abstract: Tetrafluoroethoxybenzenes, and their acid addition salts, of the general formula: ##STR1## in which R.sup.1 may represent hydrogen or an alkyl having from 1 to 4 carbon atoms and R.sup.2, R.sup.3 and R.sup.4 represent one or more of the same or different substituents selected from hydrogen, an alkyl having 1 to 4 carbon atoms or mono- or dihydroxyalkyls having 1 to 4 carbon atoms, provided that the amino groups are situated relative to one another in an ortho- or meta- position and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 do not simultaneously represent hydrogen when the amino groups are arranged in a 2,4-position. The compounds of the invention, along with 2,4-diaminotetrafluoroethoxybenzene, are useful as coupler components in oxidative hair coloring agents. A process for making the compounds, as well as a separate process for making the mono-N-.beta.-hydroxyethyl compounds, is provided.

Abstract: New 5-alkoxy-2,4-diaminoalkylbenzenes is disclosed having the formula (I) ##STR1## where R.sup.1 is methyl or ethyl and R.sup.2 is an alkyl radical having from 2 to 4 carbon atoms, a monohydroxyalkyl radical having from 2 to 4 carbon atoms or a dihydroxyalkyl radical having from 3 to 4 carbon atoms, as well as their acid addition salts, and oxidative hair dyeing compositions containing compounds of formula (I).

Abstract: Tetrafluoroethoxybenzenes, and their acid addition salts, of the general formula: ##STR1## in which R.sup.1 may represent hydrogen or an alkyl having from 1 to 4 carbon atoms and R.sup.2, R.sup.3 and R.sup.4 represent one or more of the same or different substituents selected from hydrogen, an alkyl having 1 to 4 carbon atoms or mono- or dihydroxylalkyls having 1 to 4 carbon atoms, provided that the amino groups are situated relative to one another in an ortho- or meta- position and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 do not simultaneously represent hydrogen when the amino groups are arranged in a 2,4- position. The compounds of the invention, along with 2,4-diaminotetrafluoroethoxybenzene, are useful as coupler components in oxidative hair coloring agents. A process for making the compounds, as well as a separate process for making the mono-N-.beta.-hydroxylethyl compounds, is provided.

Abstract: 2-nitroaniline derivatives of the general formula I: ##STR1## in which R.sup.1 and R.sup.2 represent, independent of one another, hydrogen, an alkyl of 1 to 4 carbon atoms, a monohydroxyalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, provided that R.sup.1 and R.sup.2 do not simultaneously represent alkyl groups of 1 to 4 carbon atoms, and X denotes an alkyl, monohydroxyalkyl, perfluoroalkyl or halogen, for use as an agent in a hair dyeing composition. Also disclosed are new 2-nitroaniline derivatives of the general formula II: ##STR2## in which R.sup.a and R.sup.b denote, independent of one another, ethyl, a monohydroxylalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, when Z is methyl, Cl or Br; or when Z is CH.sub.2 OH or a perfluoroalkyl, R.sup.a denotes hydrogen, a monohydroxyalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, and R.sup.b represents 2-hydroxyethyl or 2,3-dihydroxypropyl.

Abstract: Oxidative hair dye composition based on 4-amino-2-aminomethyl-phenols of the general formula (I) ##STR1## or its salts as developer substances, wherein R.sup.1 and R.sup.2 represent independently of one another hydrogen, alkyl, hydroxyalkyl, aminoalkyl, mono- or dialkylaminoalkyl, acylaminoalkyl, aryl- or alkylsulfonylaminoalkyl, carbamindoalkyl, acyl, aryl- or alkylsulfonyl or carbomoyl--wherein the alkyl radical has 1 to 4 carbon atoms in each case--or a heterocyclic, non-aromatic five- or six-membered ring is formed by means of R.sup.1 and R.sup.2 which can have an oxo group in addition.The subject matter of the application is also the new developer substances of the general formula (XII) ##STR2## wherein R.sup.a equals hydrogen, alkyl, hydroxyalkyl, aminoalky, mono- or dialkylaminoalky, acylaminoalkyl, aryl- or alkylsulfonylaminoalkyl, carbamoyl, carbamido-alkyl, acyl, aryl- or alkylsulfonyl--wherein the alkyl radicals have 1 to 4 carbon atoms in each instance--and R.sup.

Abstract: A method and composition are disclosed for the oxidative coloration of hair, based upon a developer substance-coupler substance combination, employing as coupler substance at least one 2,6-diamino-pyridine derivative according to Formula I ##STR1## in which R.sup.1 and R.sup.2 are the same or different and are each CH.sub.3 or C.sub.2 H.sub.5 and R.sup.3 is hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl, also in the form of the physiologically compatible salts. The coupler substance, preferably 2,6-diamino-3,5-dimethoxy-pyridine, 2,6-diamino-3,5-diethoxy-pyridine and 2-amino-6-(2'-hydroxyethyl)amino-3,5-dimetnoxy-pyridine, should be present in the composition in a concentration from 0.01 to 3.0% by weight, preferably from 0.1 to 2.0% by weight. The coupler substance according to Formula I is storage resistant, well soluble in water and possesses favorable toxicological as well as dermatological characteristics.