DE1144879B - Method of coloring hair - Google Patents

Description

Method for coloring hair The invention relates to a method for dyeing living hair with a neutral or slightly alkaline setting Solution, cream or paste that contains oxidizing dyes.

For coloring live hair is the use of aromatic Amino and oxy compounds are known as oxidation dyes. Just before and during the dyeing treatment is carried out by the action of an oxygen-releasing compound, for example hydrogen peroxide, or atmospheric oxygen from these compounds the colored dye develops. Such dyeing processes have the disadvantage that the majority of the dye particles are formed outside of the hair substance and only superficially attach themselves to them.

In addition, the adhesive strength of these particles is because of them chemical saturation relatively low.

The consequence of this is that the dye, when exposed to moisture, for example, when washing hair, is very easily rinsed out of the hair.

Furthermore, dyeings with chemical oxidants can be uneven fail because the penetration capacity of the dye particles depends on their size and this in turn depends on the time between the addition of the oxidizing agent and depends on how it is applied to the hair. This period is now in the hairdresser's business naturally very different.

In hair coloring processes with air oxidation, the hair becomes essential spared more, but they are very time consuming. A complete oxidation, like it is necessary for the even coloring of the hair, therefore takes a lot It takes time because the oxygen in the air does not sufficiently penetrate the damp hair able. For this reason, this dyeing process is of no great practical importance attained.

To shorten the exposure time and to complete the coloring chemical oxidizing agents are usually added in practice, which means the There is no longer any advantage of being gentle on the hair.

The invention avoids these disadvantages and essentially provides before that the colorant used a) 1,4-diaminobenzene or 1,4-aminophenol as well b) 1,3-diaminobenzene and / or 1,3-aminophenol and / or 1,3-dioxybenzene and / or whose substitution products preferably contain such a ratio that to 1 mole of the compounds mentioned under a) 1 mole of the compounds mentioned under b) not applicable and that without using an oxygen-releasing compound and colors in the absence of atmospheric oxygen. In this process it is particularly surprising that in the absence of oxygen not only from the monomolecular dye precursors the finished dye is formed, but the color obtained is even extraordinary is durable and wear-resistant.

The latter should be explained by the fact that not like the known ones Process larger dye particles get to the hair, which then for the most part unable to penetrate through the cuticle, but the dye inside Contact with the keratin substances on the hair and especially inside the hair is formed. The coloring is very even, because there are no larger dye particles, but monomers get onto the hair. It is also very lightfast, especially there is no shift to red, as is the case with old-style hair colors as soon as the coloring was old for some time.

The invention therefore describes a method that is extremely gentle on the hair for real coloring of keratin-containing material. Contrary to most hair dyes it is enough to adjust the solution for dyeing to be weakly ammoniacal. This will A swelling of the hair is largely prevented and thus the structure of the hair obtain. Hair becoming porous, as it would after exposure to chemical oxidizing agents is observed, and the resulting hair damage is excluded. The coloring the hair is done very quickly because the dyeing starts at the moment of application and increases in saturation within a few minutes.

This solution gives a dark blonde shade.

Example 8 p-Toluenediamine sulfate .. 2.00 g p-Amino-o-cresol ........ 1.00 g of distilled water ... ad 100.00 g With monoethanolamine is adjusted to a pH value set from 7.0.

The solution gives a maroon shade.

Example 9 p-aminophenol ... 1.00 g pyrocatechol ............ 0.50 g laurylpyridinium chloride ....... 5.00 g distilled water .. ad 100.00g with aqueous Ammonia solution is adjusted to a pH of 10.

This solution gives a dull blonde shade.

Example 10 p-aminophenol ... 1.00 g resorcinol ................ 0.80 g lauryl alcohol with 5ÄO ....... 5.00 g distilled water .. ad 100.00 g with aqueous Ammonia solution is adjusted to a pH of 10.

The solution gives a golden blonde shade.

Claims (2)

PATENT CLAIMS: 1. Method for coloring living hair with a neutral or slightly alkaline, preferably ammoniacal one Solution, cream or paste that contains oxidizing dyes, characterized in that that the colorant used is a) 1,4-diaminobenzene or 1,4-aminophenol or their Homologues and b) 1,3-diaminobenzene and / or 1,3-aminophenol and / or 1,3-dioxybenzene and / or their homologues in such a ratio, preferably that to 1 mol of the compounds mentioned under a) 1 mol of the compounds mentioned under b) is omitted and that dyeing is carried out without the use of an oxygen-releasing compound. 2. The method according to claim 1, characterized in that the used Coloring agents non-ionic or cationic wetting agents, preferably in one concentration Contains from 0.5 to 50%. Publications considered: German Patent No. 958 765; German Auslegeschriften Nos. 1039 480, 1039 481; Austrian patents No. 29,838,196,563; French Patent No. 1,137,922; Soaps, oils, fats, Wachse, 1952, pp. 635 and 636; E. Sagarin "Cosmetics, Science and Technology", 1957, pp. 492 to 512. The method according to the invention is illustrated by the following dyeing examples explained: Example 1 I-methyl-2,5-diaminobenzene sulfate 2.20 g of l-oxy-3-aminobenzene 1.09 g aqueous ammonia solution (25%) .. 5.00 g distilled water ... ad 100.00 g If this solution is applied to light or very gray hair, then one obtains after an exposure time of 30 minutes a dull, dark blonde coloration. Example 2 1-methyl-2,5-diaminobenzene sulfate .. 2.20 g 1, 2, 4-diaminoaniso-sulfate ........... 2.36 g aqueous ammonia solution (25%) ... 6.50 g distilled water ....... ad 100.00 g Applied to very gray or very light, naturally colored hair, creates this solution has a rich, steel blue hue. Example 3 1-methyl-2,5-diaminobenzene sulfate .. 2.20 g resorcinol .......................... 1.10 g aqueous ammonia solution (25%) .. 5.50 g distilled water ........ ad 100.00g This solution creates a blonde shade on very gray hair. Example 4 l-methyl-2,5-diaminobenzene sulfate .. 0.220 g 4,4'-diaminodiphenylamine sulfate ..... 0.297 g aqueous ammonia solution (25%) .. 0.900 g distilled water ....... ad 100,000 g This solution turns very light or very gray hair lavender-up tinted lilac. Example 5 p-aminophenol ........... 1.09 g 1,2,4-diaminoanisolsutfate ........... 2.36 g aqueous ammonia solution (25%) .. 5.50 g distilled water ad 100.00 g This color solution tones very light hair - depending on the length of the exposure time - reddish blonde to mahogany brown. Example 6 p-aminophenol ... 1.09 g resorcinol .......................... 1.10 g aqueous ammonia solution (25%) .. 5.50 g distilled water ad 100.00 g This solution can be used to tint light or very gray hair dull blonde. Example 7 p-aminophenol ........... 1.00 g of 2,4-diaminoanisole sulfate ..... 2.00 g of distilled water ... ad 100.00 g The solution is made up with ammonium acetate a pH of 5.5 is set.