摘要:
In a method for the oxidative dyeing of human or animal hair a hair dyeing agent is prepared from at least one oxidation dye in creme or gel form, which is adjusted to a pH of 5.9 to 6.9.The preparation is performed with the addition of at least one metal salt as catalyst, which is added simultaneously with or immediately after the mixing of the oxidation dye with the oxidizing agent, the amount added being such that it is contained in the treatment-ready hair dyeing agent in proportions between 0.001 and 1.00 wt.-%, preferably between 0.0004 and 0.001 wt.-%.The metal salts used as catalyst are preferably selected from the group containing copper(II) chloride, copper(II) sulfate, cobalt chloride, cerium sulfate and vanadium sulfate.
摘要:
Process for dyeing keratinous fibres, characterized in that there is applied to these fibres at least one composition (A) containing, in an appropriate medium for dyeing, 5,6-dihydroxyindole in combination with iodide ions, the application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in an appropriate medium for dyeing, hydrogen peroxide at an alkaline pH of less than 12.
摘要:
The subject invention concerns novel dye compositions and a process for dyeing keratinous fibers, for example, hair, to give a pleasing and stable colored product. The dye composition is a novel combination of three elements to give a dye that, unexpectedly, has highly desirable dyeing properties. This unique combination comprises (1) a suitable organic compound to assist dye dispersion, (2) dye precursors including dopamine, D-dopa, L-dopa, D,L-dopa, or analogs thereof, and (3) iodate or periodate. Desired color variations can be obtained by the use of appropriate color modifiers.
摘要:
A method for dyeing hair and other keratinaceous materials with certain amino, hydroxy, methoxy and nitro-containing indoline, indole and indazole compounds, and combinations thereof, and keratinaceous fibers dyed therewith.
摘要:
WHEREIN R can be hydrogen, -CH2CH2OH, -COCH3 or -CH2-CO-NH2. The oxidation dye to coupler ratio ranges between 10:1 and 1:4 and the composition has an alkaline pH. It is applied to the hair in the presence of an oxidizing agent for a period of about 5-30 minutes at a temperature of about 15*-40*C, after which the hair can be washed and dried.
A composition for dyeing keratinic fibers, especially hair, containing an aqueous solution of an oxidation dye which can be either one having a phenyl nucleus substituted with two amino groups in para position relative to each other or one having a phenyl nucleus substituted with an amino group and a hydroxyl group in ortho or para position relative to each other, and as a coupler therefor a compound having the formula
摘要:
Keratinic fibers, especially human hair are dyed by an agent containing a coupling component which is an m-phenylenediamine derivative of the formula wherein R1 is a C1-4 alkyl group or a C1-4 monohydroxy alkyl group, R2 is a hydrogen atom, a methyl or an ethyl group and each of R3 and R4 is independently a branched or linear C2-6 hydroxyalkyl group, with the proviso that the R1O group is in the ortho or meta position to both amino groups; and a cosmetically acceptable carrier. These agents afford desired color nuances in a sufficient intensity and fastness, exhibit good fiber affinity and are safe from a toxicological and dermatological point of view.
摘要:
The present invention relates to methods of dyeing a material which involve contacting the material with a dyeing system which comprises: (a) a mixture of (i) an aromatic diamine and (ii) one or more of a naphthol and an aminonaphthalene and (b) an oxidation system comprising (i) a hydrogen peroxide source and an enzyme exhibiting peroxidase activity or (ii) an enzyme exibiting oxidase activity on one or more of the compounds of mixture (a). The material may be a fabric, yarn, fiber, garment or film made of fur, hide, leather, silk or wool, or made of cationic polysaccharide, cotton, diacetate, flax, linen, lyocel, polyacrylic, synthetic polyamide, polyester, ramie, rayon, triacetate, or viscose.
摘要:
Methods of dyeing a material, comprising treating the material with a dyeing system which comprises (a) one or more mono-, di- or polycyclic aromatic or heteroaromatic compounds, and (b) (i) a hydrogen peroxide source and an enzyme exhibiting peroxidase activity or (ii) an enzyme exhibiting oxidase activity on the one or more aromatic or heteroaromatic compounds; wherein the material is a fabric, yarn, fiber, garment or film made of cotton, diacetate, flax, linen, lyocel, polyacrylic, synthetic polyamide, polyester, ramie, rayon, tencel, or triacetate.
摘要:
Process for the preparation of 5,6-dihydroxyindole, wherein the compound of formula: ##STR1## in which R' denotes a hydrogen atom or an optionally substituted benzyl radical, is subjected either to the action of hydrogen under pressure or to a hydrogen transfer operation, in a solvent medium and in the presence of a hydrogenation catalyst.
摘要:
Oxidative hair dye composition containing as ''''para component'''' compounds of the formula:
OR THEIR ACID ADDITION SALTS, IN WHICH: R1 is alkyl or hydroxyalkyl; R2 is hydrogen or hydroxyalkyl; R3 is hydrogen, alkyl, alkoxy or halogen; and R4 occupies any one of the remaining positions ON THE BENZENE RADICAL AND IS HYDROGEN, ALKYL, ALKOXY OR HALOGEN; PROVIDING THAT R2 is hydrogen when R3 is alkyl, alkoxy or halogen and providing that at least two of R1, R2, R3 or R4 are other than hydrogen.