Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1985-11-27
1988-02-16
Willis, Prince E.
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8405, 8406, 8407, 8421, 8423, 8429, 424 70, A61K 713
Patent
active
047252820
DESCRIPTION:
BRIEF SUMMARY
Oxidative hair dyeing compositions in form of cremes have presently reached a particular importance. Such hair dyeing compositions generally contain as the most important oxidative dyes p-substituted benzene derivatives like, for example, 1,4-diaminobenzene, 2,5-diaminotoluene, p-aminophenol and 2,5-diaminibenzyl alcohol. They are called developing substances. The developing substances must be used in combination with suitable coupler substances. In particular, certain m-substituted benzol derivatives or certain pyridine derivatives are used as coupler substances. Examples for customary coupler substances are resocino 1,4-chlororesorcinol, 4-hydroxy-1,2-methylene dioxybenzene, 4-amino-1,2-methylene dioxy benzene, 2-methyl resorcinol, 2,4-dihydroxy phenol ether, 4-hydroxy indole, 1-naphthol, m-aminophenole, m-phenylene diamine and m-phenylene diamine derivatives.
Customary oxidative hair dyeing compositions are alkaline adjusted, preferably by adding ammonia or monoethanol amine.
The developing substances and coupler substances are very often present in form of their chlorides or sulfates, whereby the corresponding ammonium salts are formed after adding ammonia. These salts act against the forming of emulsion and reduce their stability in creme like oxidative hair dyeing compositions together with the developers,the couplers and, if need be, the direct dyeing dye substances contained therein. In particular in dark dye rich hair dyeing compositions there is always the danger of an emulsion separation.
Hitherto, it had been required to adjust the consistency of customary creme like oxidative hair dyeing compositions to a high viscosity (above of about 10,000 mPa..sub.s, Stab II/30.degree. C./20 g). Thus separating phenomenons were avoided and the possibility existed to charge the emulsion with high constituents of dyes and electrolytes.
Above all fatty alcohols and fatty amides are used in the aforedescribed customary hair dyeing compositions for increasing the viscosity. In order to obtain a good emulsion stability these thickeners must be used in high concentrations of about 15 to 30% by weight. Oxethylized fatty alcohols, fatty alcohol sulfates and oxethylized fatty alcohol sulfates are used as emulsifiers in customary creme like hair dyeing compositions.
lf the viscosity of the hair dyeing compositions are high, these compositions are hard to distribute in hair. Therefore, they usually have to be applied with a brush. Therefore, the application onto the hair with the assistance of an emulsion test flask and thereby an application by the customer himself is not possible. Due to the high viscosity, which still increases due to the partial evaporation of liquid during the dyeing treatment, the complete rinsing after the hair dyeing treatment is made more difficult so that a subsequent hair washing is indispensable.
Before the start of the hair dyeing the creme like oxidative hair dyeing composition is admixed with an aqueous hydrogen peroxide solution, for example, a 6% H.sub.2 O.sub.2 -solution, customarily at a ratio of 1:1.
The hydrogen peroxide solution may be present as a clear or a turbid solution, whereby a latex dispersion is used as a turbidity substance, for example.
A further disadvantage of customarily highly viscous hair dyeing compositions consists in that its viscosity increases during storage,so that the removal from the tube is made more difficult and that the admixing with the hydrogen peroxide solution requires more time.
It is therefore an object of the subject application to provide an oxidative hair dyeing composition which has a lower viscosity than the aforedescribed known compositions, which does not run off the hair and which in furtherance does not have the described disadvantages of known creme like hair dyeing compositions.
In contrast thereto, it now had been found that novel low viscous oxidative hair dyeing compositions can be made with considerably improved characteristics, wherein the addition of dyes and electrolytes does not act destabilizing on the emulsion, but in contra
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Hoch Dietrich
Konrad Eugen
Mager Herbert
Pasquier Gilbert
Skaling Linda D.
Striker Michael J.
Wella Aktiengesellschaft
Willis Prince E.
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