Abstract: Meto-aminophenols of the formula ##STR1## where R is hydrogen, C.sub.1-4 -alkyl, or a C.sub.2-4 -hydroxyalkyl; and their use as couplers in an oxidative hair dye in combination with developers.

Abstract: This invention encompasses preparations containing hair dyes of the formula ##STR1## wherein: one of R.sup.1 or R.sup.2 is a nitro and the other is --SO.sub.3 H;one of R.sup.3 or R.sup.4 is --NR.sup.6 R.sup.7 and the other is hydrogen, chlorine, or a C.sub.1-4 alkyl, and R.sup.6 and R.sup.7 are independently hydrogen, C.sub.1-4 alkyl, or C.sub.2-4 hydroxyalkyl; andR.sup.5 is hydrogen, chlorine, or a C.sub.1-4 alkyl;or a water soluble salt thereof; certain novel compounds within the above formula; and a method for dyeing hair.

Abstract: Hair-dyeing compositions containing oxidation dye precursors and a carrier contain coupler components corresponding to the formula: ##STR1## wherein R.sup.1 is selected from the group consisting of hydrogen, a C.sub.1 -C.sub.4 alkyl group or a halogen atom; R.sup.2 and R.sup.3 independently of one another are selected from the group consisting of hydrogen, C.sub.1 -C.sub.4 alkyl groups or C.sub.2 -C.sub.4 hydroxyalkyl groups, or together with the nitrogen atom, form a morpholine, piperidine, pyrrolidine or piperazine ring; and R.sup.4 is selected from the group consisting of hydrogen or a --NR.sup.2 R.sup.3 group; or salts thereof. The composition also contains typical developer components. The compounds are particularly suitable as red couplers for developers of the 2,4,5,6-tetraaminopyrimidine type, including derivatives thereof.

Abstract: This invention encompasses compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 independently are hydrogen, C.sub.1-4 alkyl, or C.sub.2-4 hydroxyalkyl; one of R.sup.3 to R.sup.7 is --SO.sub.3 H or --COOH; and the remaining of R.sup.3 to R.sup.7 independently are hydrogen, chlorine, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, or --NR.sup.8 R.sup.9, where R.sup.8 and R.sup.9 independently are hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkoxy, or where --NR.sup.8 R.sup.9 is piperidine, morpholine, piperazine, or pyrrolidone; or a water soluble salt thereof; hair dye preparation containing these compounds, and methods for dyeing hair using such preparation.

Abstract: N-4-aminophenyl-N'-2,4-diaminophenyl alkylenediamines corresponding to the formula ##STR1## and water-soluble salts thereof. The above compounds are suitable as developers in oxidation hair dyes. Such hair dyes contain compounds corresponding to formula (I) or salts thereof as developer component in addition to conventional developer and conventional coupler components and, optionally, conventional substantive hair dyes in a cosmetic carrier. In conjunction with phenols, naphthols, resorcinols and 1,3-bis-(2,4-diaminophenyl)-alkanes or 1,3-bis-(2,4-diaminophenoxy)-alkanes as couplers, the new developers give particularly intensive colors with good light fastness properties.

Abstract: This invention is directed to compositions of the developer-coupler type of the dyeing of hair, consisting essentially of substituted dihydroxypyridine compounds or salts thereof as coupling components and, as developer components, the conventional components used in oxidation dyes.

Abstract: This invention encompasses compounds of the formula: ##STR1## wherein: one of R.sup.1 or R.sup.2 is nitro and the other is --SO.sub.3 H or COOH; andone of R.sup.3 or R.sup.4 is hydrogen and the other is --NR.sup.5 R.sup.6, where R.sup.5 and R.sup.6 independently are hydrogen, C.sub.1-4 alkyl, or C.sub.2-4 hydroxyalkyl;or a water soluble salt thereof; hair dye preparations containing the above compounds as substantive hair dyes; and methods for dyeing hair using such preparations.

Abstract: This invention is directed to oxidation hair dye compositions and their use in the dyeing of human hair. The compositions consist essentially of precursors comprising 2,3-diamino-6-methoxy-pyridines and aromatic amines or diamines. The combination of oxidation dye precursors according to the invention gives bright, deep blue dye finishes having high stability to heat and light.

Abstract: Novel substituted nitrodiphenylamines and substantive hair dye preparations containing them or containing nitrodiphenylamines with different substituents. The dyes result in yellow to copper-colored shades of high intensity and fastness and are more soluble in water than known nitroanilines dyes.

Abstract: Novel substituted nitrodiphenylamines and substantive hair dye preparations containing them or containing nitrodiphenylamines with different substituents. The dyes result in yellow to orange-red colored shades of high intensity and fastness and are more soluble in water than known nitroaniline dyes.

Abstract: New 2,4,5,6-tetra-aminopyrimidine derivatives corresponding to the following general formula ##STR1## in which R.sup.1 is a group of the formula --NH--(CH.sub.2).sub.n --NH--, where n=2-4, a group of the formula --NH--CH.sub.2 --CH(OH)--CH.sub.2 --NH-- or a group of the formula ##STR2## R.sup.2 and R.sup.3 independently of one another represent hydrogen, chlorine or a group of the formula --OR.sup.4 where R.sup.4 is a C.sub.1 -C.sub.4 alkyl group and A is a CH group or a nitrogen atom, and salts thereof. The compounds are suitable as developer components for oxidation hair dyes which, in conjunction with a number of standard coupler compounds, form a wide range of brilliant colors with high absorptive power on human hair and good fastness properties.

Abstract: A hair treating composition containing certain substituted aminodiphenylamines as a first oxidation dye precursor, optionally at least one second oxidation dye precursor, optionally at least one substantive hair dye, and a cosmetic carrier; as well as a method for its use.

Abstract: An aqueous dispersion of a copolymer offrom about 50 to 60% by weight ethyl acrylatefrom about 30 to 40% by weight methacrylic acidfrom about 5 to 15% by weight acrylic acid andfrom about 0.02 to 0.04% by weight of a polyethylenically copolymerizable monomer, for example ethylene glycol dimethacrylate. The dispersion is suitable as an additive for aqueous, mildly acidic preparations of hydrogen peroxide to impart an increased viscosity to them after neutralization. The hydrogen peroxide preparations in question are particularly suitable for use as a developer composition for oxidative hair dyes and hair bleaches.

Abstract: This invention is directed to m-phenylenediamine derivatives and salts thereof and to compositions of the developer-coupler type of the dyeing of hair, consisting essentially of m-phenylenediamine derivatives or salts thereof as coupling components and, as developer components, conventional components used in oxidation dyes.

Abstract: Hair coloring preparations containing substantive hair dyes corresponding to the following general formula ##STR1## in which A is an SO.sub.3 H group or a COOH group, and R.sup.1 and R.sup.2 are hydrogen or other substituents, show high fastness properties and favorable toxicological properties. The substantive hair dyes are preferably present in the hair coloring preparations in a quantity of from 0.01 to 5.0% by weight, optionally in conjunction with known oxidation hair dye precursors.

Abstract: Hair dyes containing oxidation dye precursors in a cosmetic carrier contain as coupler substances compounds corresponding to formula I ##STR1## in which Z is a sulfur atom, an >SO group or an >SO.sub.2 group or salts thereof. As developer substances, the hair dyes contain the developers normally used in oxidation hair dyes, preferably aromatic and/or heterocyclic diamines or a 2,4,5,6-tetraamino pyrimidine. The new couplers produce color tones in the brown range with good fastness properties and a negligible tendency towards skin staining.

Abstract: Aqueous alkali metal silicate bonding compositions having a molar ratio of SiO.sub.2 :Me.sub.2 O of 2.4:1 to 3.4:1, wherein Me is sodium and/or potassium, a solids content of about 35 to 50 percent by weight, and containing triethanolamine. The bonding compositions can be mixed with fillers such as quartz sand and used for the manufacture of molded forms for the casting of metals.

Abstract: The present invention is directed to oxidation hair dyes of the developer-coupler type where the coupler component is a 5-halo-2,3-pyridine-diol and the developer component is selected from conventional developers used in hair dyeing.

Abstract: 2,4-Dichloro-3-alkylidene-aminophenols having the formula: ##STR1## wherein R.sub.1 represents hydrogen or an alkyl radical having 1 to 6 carbon atoms and R.sub.2 represents an alkyl radical having 1 to 6 carbon atoms or an aryl radical, with the proviso that R.sub.2 can only be an aryl radical when R.sub.1 is hydrogen.The 2,4-dichloro-alkylidene-aminophenols can be produced by reaction of 2,4-dichloro-3-aminophenol with the corresponding aldehydes or ketones. They are suitable as such, or in the form of their salts with inorganic or organic acids, as coupler components in oxidation hair dyes.

Abstract: This invention is directed to bis-(2,4-diaminophenoxy)-alkanols and salts thereof and to compositions of the developer-coupler type for the dyeing of hair, consisting essentially of bis-(2,4-diaminophenoxy)-alkanols or salts thereof as coupling components and, as developer components, the conventional components used in oxidation dyes.