Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Amphoteric or zwitterionic surfactant containing
Patent
1987-11-12
1989-11-28
Robinson, Ellis P.
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Amphoteric or zwitterionic surfactant containing
8408, 8412, A61K 713
Patent
active
048836567
DESCRIPTION:
BRIEF SUMMARY
The subject matter of the invention is a composition for the oxidative dyeing of hair based on a combination of coupler and developer substances, wherein 5-amino-2-methylphenol is used as a coupler substance and 4-amino-3-methylphenol and 1,4-diaminobenzene and/or 2,5-diaminotoluene are used as developer substances.
In the area of hair coloring, oxidative dyestuffs have achieved considerable importance. The dyeing is brought about by means of the reaction of certain coupler substances with certain developer substances in the presence of a suitable oxidizing agent.
There are numerous special requirements for oxidative dyestuffs which are used for dyeing human hair. For example, they must be harmless in toxicological and dermatological respects and must make it possible to achieve the desired intensity of dyeing. Moreover, it is necessary that a wide assortment of various color shades can be achieved by means of combining suitable developer and coupler substances. In addition, a favorable light fastness, fastness to permanent waving and acids and rubbing fastness are required of the hair colorings which can be achieved. But, in every instance, such hair colorings must remain stable over a period of at least 4 to 6 weeks without being influenced by light, chemical agents or friction.
1,4-diaminobenzene, 2,5-diaminotoluene, 2,5-diaminobenzyl alcohol and 4-aminophenol are preferably used as developer substances. 4-aminophenol is used chiefly for producing fashionable shades, wherein orange is produced in combination with the coupler substance 5-amino-2-methylphenol, a violet-tinted red is produced with the coupler substance 1-naphthol, and a violet is produced with the coupler substance m-phenylenediamine and its derivatives. It is a great disadvantage that these dye shades are not neutral reds, but rather always contain blue or yellow portions. Another significant disadvantage results when these dye shades are mixed with natural shades based on 1,4-diaminobenzene or 2,5-diaminotoluene. That is, the expected dyeing result located between the natural shade and the admixed red shade is not obtained here, rather a completely unexpected violet dye shade is obtained. This violet dye shade is caused by means of the reaction of the p-diamine, for example, the 1,4diaminobenzene, with 1-naphthol and with m-phenylenediamine or its derivatives.
Oxidizing hair dyeing compositions are described in DE-PS 1 143 605 which contain 5-amino-2-methylphenol in combination with aromatic 1,4-diamines as coupler substances. However, these hair dyeing compositions only provide violet dye shades which can be used in the red shade area only to a very limited degree because of their blue-tinted dyeing character.
Although the developer substance 4-amino-3-methylphenol is frequently mentioned in publications on hair dyeing, it has achieved very little importance, if any, in practice. Thus, 4-amino-3-methylphenol with 5-amino-2-methylphenol as coupler only provides a brick-red which is weak in color.
Therefore, it is the object of the invention to provide a hair dyeing composition and a method for dyeing hair in which the aforementioned disadvantages are avoided.
It has been found in a surprising manner that this object is met to an outstanding degree by compositions for the oxidative dyeing of hair based on a combination of coupler substances and developer substances which are characterized in that they contain salts.
Chloride, sulfate, phosphate, acetate, propionate, lactate or citrate, for example, are taken into consideration as physiologically compatible salts with inorganic or organic acids. They can also be used in the form of their salts with bases, for example, as alkaliphenolates, insofar as the dye substances contain aromatic OH groups.
Whereas a certain surplus quantity of 4-amino-3-methylphenol relative to 1,4-diaminobenzene and/or 2,5-diaminotoluene proves advantageous with the developer substances, the coupler substance 5-amino-2-methylphenol can be contained in an equimolar ratio, or in a greater or lesser quantity, with refe
Hoffmann Axel
Konrad Eugen
Mager Herbert
Robinson Ellis P.
Rucker Susan S.
Striker Michael J.
Wella Aktiengesellschaft
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