Abstract:
The invention relates to 1,3-dihydroxybenzene derivatives of general formula (I) or (Ia), or the physiologically acceptable, water-soluble salts thereof, R'1 representing a substituted pyridyl group, a pyrimidyl group, or a radical of formula (IIa) or (IIIa). The invention also relates to colorants containing said compounds and used on keratin fibres.
Abstract:
The invention relates to p-aminophenol derivatives of the general formula (I), or their physiologically acceptable, water-soluble salts, as well as to oxidative hair colorants on the base of a combination of a developer substance and a coupler substance that contain at least one p-aminophenol derivative of the formula (I).
Abstract:
The invention relates to oxidizing agents for coloration of keratin fibers, especially hair, based on a combination of developer-coupler substances, characterized in that they contain at least one 2,5-diamino-1-phenylbenzene derivative of general formula (I) as a developer substance. The invention also relates to novel 2,5-diamino-1-phenylbenzene derivatives according to formula (I), wherein at least one of the radicals R1-R10 is different from hydrogen.
Abstract:
The present invention relates to agents for colouring keratin fibres which comprise at least one zwitterionic azomethine dye of the general formula (I), (II) or (III) in which z is a heterocycle of the formula (IV), (V), (VI), (VII), (VIII), (IX), (X), (XI), (XII) in which R8 is an alkyl sulfonate radical of the formula (XIII);
Abstract:
A process for the preparation of 4-hydroxyalkylamino-2-nitro-anisoles of the general formula (I) wherein m is 2 or 3; by reaction of a 4-halogeno-3-nitro-aniline of formula (II) with a chloroalkyl-chloroformate, alkaline ring closure of the resulting carbamate and nucleophilic replacement of the halogeno atom by a methoxy group to form a derivative of formula (IV), and finally ring opening of the resulting cyclic carbamate by treatment with methanolic alkali metal hydroxide, followed by neutralization with inorganic or organic acids, wherein the complete reaction is executed in a non-aqueous medium; as well as process for the preparation of 2-amino-4- hydroxyalkylamino-anisoles of formula (V).
Abstract:
The present invention relates to a) a non-oxidative colouring agent for keratin fibres, in particular human hair, comprising at least one dye according to formula (I) or (II), b) an oxidative colouring agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide), at least one oxidative dye precursor and at least one dye according to formula (I) or (II), and c) a lightening agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide) and at least one dye according to formula (I) or (II), with R4 being a cationic group.
Abstract:
4-Aminophenol derivative of the general formula (I) or physiologically compatible, water-soluble salt thereof, and agent comprising these compounds for the oxidative dyeing of keratin fibers.
Abstract:
The object of the present patent application are new 2-amino-5-aminomethyl-phenol derivatives of general formula (I) and colorants for oxidative dyeing of keratin fibers, particularly human air containing at least one 2-amino-5-aminomethyl-phenol derivative of formula (I) as dye component: wherein R1 denotes a five-membered or a six-membered heterocyclic ring, substituted or unsubstituted, or a physiologically tolerated, water-soluble salt thereof, and wherein R1 is not an unsubstituted 3-pyridinyl ring.
Abstract:
The invention relates to a cosmetic agent which is made essentially of a peptide linker and at least one cosmetic active ingredient which is covalently connected thereto.
Abstract:
The invention relates to an agent for dyeing keratin fibres. Said agent contains at least one compound having a nucleophilic reaction centre, at least one alcohol from the group consisting of aryl alcohol derivatives and benzyl alcohol derivatives, and at least one appropriate oxidation enzyme. The invention also relates to a method for dyeing keratin fibres using the inventive agent.