Abstract: Use of metal complex compounds of formula (1) and/or (1?) [LnMemXp]zYq,??(1) [L?nMemXp]zYq,??(1?) wherein all substituents are as defined in the claims, as catalysts for oxidation reactions, and also novel metal complex compounds and novel ligands.

Abstract: The present invention relates to a method of reducing the total organic carbon (TOC) content of waste water in the course of the preparation of concentrated solutions or suspensions of anionic organic compounds, which method comprises increasing the concentration of an aqueous solution or suspension of an anionic organic compound in the form of its free acid or its alkali metal salt, having a salt content of less than 5% of extraneous salt by weight based on the total solution or suspension, by microfiltration, ultrafiltration and/or nanofiltration, a) the membrane pore size being so selected that compounds having molecular weights in the range from 300 to 1000 Daltons or higher are retained, and b) the content of anionic compound in the concentrate being so adjusted to from 10 to 50% by weight that the total organic carbon (TOC) content of the permeate is less than 0.

Abstract: The present invention relates to novel cationic yellow dyes of formula (1) wherein R1 and R2 are each independently of the other a C1-C8alkyl radical or an unsubstituted or substituted benzyl radical, R3 is hydrogen, C1-C8alkyl, C1-C8alkoxy, cyanide or halide, preferably hydrogen and X is an anion, with the proviso that at least one of the substitutents R1 is a benzyl radical and R2 is a methyl radical, R2 is not hydrogen, also to compositions therof, especially comprising other dyes, to processes for the preparation therof and to the use therof in the dyeing of organic material, such as keratin, wool, leather, silk, cellulose or polyamides, especially keratin-containging fibres, cotton or nylon, and preferably human hair.

Abstract: A method of colouring porous material, especially human hair, is described, which method comprises applying to the material being coloured, in any desired order successively, or simultaneously, a) at least one capped diazonium compound of Formula (1) and/or at least one compound of Formula (2) and/or at least one compound of Formula (3) wherein Q is an unsubstituted or substituted aromatic or heterocyclic residue, R is the radical of an unsubstituted or substituted, water-soluble aliphatic or aromatic amine, and T is an unsubstituted or substituted, water-soluble aliphatic or aromatic residue, wherein at least one of the groups must contain a radical imparting water solubility, and a) at least one water-soluble coupling component under conditions such that, initially, coupling does not take place, and then causing the capped diazonium compound present on the material to react with the coupling component

Abstract: A method of coloring porous material, especially human hair, is described, which method comprises applying to the material being colored, in any desired order successively, or simultaneously, a) at least one capped diazonium compound and b) at least one cationic water-soluble aromatic coupling component, under conditions such that, initially, coupling does not take place, and then causing the capped diazonium compound present on the material to react with the coupling component.

Abstract: Process of coloring porous material, which comprises a) applying to the material being colored at least one capped diazonium compound, and b) then causing the capped diazonium compound present on the material to react with the material.

Abstract: The present invention relates to a method of coloring keratin-containing fibres, especially human hair, in which method a compound of formula (I), wherein R is hydroxy or NHR1, R1 being hydrogen or C1–C4alkyl, and B is an aromatic or heterocyclic ring, is diazotised, and the resulting diazonium salt is applied at a pH of from 2 to 5 to the material being colored and then, by means of increasing the pH to from 7 to 12, is fixed on the material in the form of an oligomeric or polymeric colorant

Abstract: A method of dyeing keratin-containing fibres, which comprises using a dye of formula wherein R1 and R2 are each independently of the other hydrogen, C1–C4alkyl, halogen or nitro, R3 and R4 are each independently of the other unsubstituted C1–C4alkyl or C1–C4alkyl substituted by OH, C1–C4alkoxy, halogen, CN or by phenyl, X1 and X2 are each independently of the other hydrogen, C1–C4alkyl, C1–C4alkoxy or halogen, R5 is hydrogen or C1–C4alkyl, R6 is C5–C12alkyl or C5–C8cycloalkyl each unsubstituted or substituted by OH, C1–C4alkoxy, halogen, CN or phenyl, or R6 is C1–C4alkyl substituted by phenyl or by C5–C8cycloalkyl, or wherein R5 and R6 together with the nitrogen atom linking them form a piperazine ring, which is substituted, at the nitrogen atom that is not bonded to the phenyl group, by C1–C8-alkyl or phenyl, or which is quaternised at that nitrogen atom by two such groups, the C1–C8-alkyl radicals and phenyl mentioned as substituents of the nitrogen atom of the piperazine ring being unsubstituted or su

Abstract: This invention relates to a novel crystal form of the 1:1 manganese (III) complex of N,N?,N?tris[salicylideneaminoethyl]amine, a process for its preparation and the use thereof.