DE972216C - Fixative for reductively treated hair - Google Patents

Description

ISSUED JUNE 4, 1959

Sch 11367IV a j 30 h

It is known that human hair by treatment with sulfur-containing reducing Substances can be changed in its shape, be it for the purpose of hair curling or straightening of frizzy hair.

This type of reductive hair treatment is followed by an oxidative post-treatment, wherein an oxidizing agent, such as. B. hydrogen peroxide, addition compounds of hydrogen peroxide or alkali salts of the oxo acids of the halogens can be used.

Fixing solutions, the salts of the halogenated oxygen acids, ζ. B. bromates contain, tend at a _pH value below 7 for decomposition with separation of the halogen. In bromates, this decomposition is due to traces of bromide, which are always present in technical bromate. For this reason, only bromate solutions that are neutral or alkaline can be kept.

It has now been found that bromates are more suitable than ready-to-use fixing solutions Hydrogen peroxide, as the latter, unlike bromate, is not resistant to the effects of heat. There is a risk that hydrogen peroxide solutions will lose their content by splitting off oxygen lose effective hydrogen peroxide and thus the effectiveness decreases.

Alkali salts of the halogenated oxygen acids have the disadvantage that the fixing process, d. H. the complete annihilation of all reducing sub-

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punch, takes longer than when using hydrogen peroxide or this separating compounds is the case.

This disadvantage has now been eliminated according to the invention in that the fixing agents, the salts containing the haloacid, water-soluble complex organic compounds of the Heavy metals of the IV series of the Periodic Table of the Elements (cf. Chemie-Lexikon von

ίο Dr. H. Römpp, 1st edition, 1947, p. 980), which nor give the typical reactions of the heavy metals mentioned, are added. These Heavy metal salts catalyze the oxidation of the reduced one, even in low concentrations Hair keratin as well as the excess reducing agent due to bromate, also in the neutral and weakly alkaline medium.

From the published documents of the patent 958764 of class 30h it was known water-soluble organic heavy metal compounds of the IV. series of the Periodic Table, z. B. Iron ammonium citrate, reducing permanent waving agents, e.g. B. alkali sulfite solutions, for acceleration to add to air oxidation. It is therefore not a matter of fixing agents that after completion of the actual permanent wave treatment are applied as in the subject of the invention, and not to halogenated oxygen acids containing agents.

According to the invention it has now been found that complex organic compounds of Heavy metals, especially iron, which show the typical reactions of heavy metals, In contrast to normal iron compounds with ionic foaming agents or wetting agents, no insoluble ones Form precipitates. Ferriammonium citrate proved to be particularly suitable.

Here are a few examples:

Example 1 5.0% sodium bromate 3.0% lauryl alcohol sulfate, 0.3% ferric ammonium citrate, 91.7% water.

Example 2 5.0% sodium bromate 3.0% lauryl alcohol sulfate 0.5% nickel ammonium tartrate, 91.5% water.

Example 3 5.0% sodium bromate 3.0% lauryl alcohol sulfate 0.5% cobalt ammonium oxalate 91.5% water.

Claims (3)

PATENT CLAIMS: 1. A fixative intended for reductively treated hair, the alkali metal salts of oxygen acids contains halogens in aqueous solution, catalysts and predominantly wetting agents, characterized in that it acts as a catalyst to accelerate the fixing process water-soluble complex organic compounds of heavy metals of the IV. series of the Periodic Table, which are still the give typical reactions of the heavy metal ions mentioned. 2. Fixing agent according to claim 1, characterized in that it is ferric ammonium citrate contains as a catalyst. 3. Fixing agent according to Claims 1 and 2, characterized by a content of catalyst less than i ° / o. © 909525/45 5.5 $