Isatin-containing formulations for coloring keratin-containing f

Details Isatin-containing formulations for coloring keratin-containing f Isatin-containing formulations for coloring keratin-containing f

1995-10-30

1997-04-01

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8409, 8423, 8574, 8618, A61K 713

Patent

active

056161506

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to formulations for coloring keratin-containing fibers, more particularly human hair, which contain isatins and another compound. In one preferred embodiment, the formulations according to the invention additionally contain an ammonium or metal salt.
Keratin-containing fibers, for example hair, wool or furs, are generally colored either with substantive dyes or with oxidation dyes which are formed by oxidative coupling of one or more primary intermediates with one another or with one or more secondary intermediates. Although intensive colors with good fastness properties can be obtained with oxidation dyes, development of the color takes place under the effect of oxidizing agents, such as H.sub.2 O.sub.2 for example, which frequently results in damage to the fibers. Although substantive dyes are applied under more moderate conditions, their disadvantage is that the colors often have unsatisfactory fastness properties.
2. Discussion of Related Art
Coloring systems based on isatin or isatin derivatives offer an alternative solution. Isatin is described in DE-OS 36 35 147 A1 as a substantive dye for coloring keratin fibers either on its own or in conjunction with quinone dyes. Unfortunately, the range of variation of the color tones obtainable is limited. In most cases, a golden color is obtained.
Another isatin-containing coloring system is described in EP 359 465 A2. In this case, the color is obtained with a ketimine (Schiff's base) produced by the reaction of an isatin with an aniline derivative. The ketimine is either applied as such to keratin fibers where it develops color or, alternatively, a mixture consisting of an isatin and an aniline derivative is applied to the fibers and initially forms the ketimine in situ, after which the color develops on the fibers.
EP 497 697 A1 describes hair coloring formulations based on isatins and aminoindoles or indolines containing a primary amino group, Schiff's based being formed in a condensation reaction.
EP 0 502 783 A1 describes hair coloring formulations containing isatins and aminopyridines or isatins and aminopyrimidines containing a primary amino group.
EP 0 502 784 A1 describes hair coloring formulations containing isatins and substituted diamines or aminophenols or isatins and (bisaryl)-alkylenediamines.


DESCRIPTION OF THE INVENTION

It has now surprisingly been found that isatins in combination with a number of other compounds, including secondary and tertiary amines, i.e. amines which are not capable of forming Schiff's bases, are suitable for coloring keratin fibers.
Examples of keratin fibers are wool, furs, skins and human hair. Although the best colors are obtained on keratin fibers, the coloring formulations according to the invention may also be used in principle for coloring other natural fibers such as, for example, cotton, jute, sisal, linen or silk; modified natural fibers such as, for example, regenerated cellulose, nitrocellulose, alkyl or hydroxyalkylcellulose or acetyl cellulose; and synthetic fibers such as, for example, polyamide, polyacrylonitrile, polyurethane and polyester fibers.
The coloring formulations described in more detail hereinafter have very good performance properties, including for example levelling power and dye absorption capacity. The colors obtained with the coloring formulations are fast to light, rubbing and washing and show high resistance to permanent-wave liquids.
The present invention relates to formulations for coloring keratin-containing fibers containing ##STR2## in which R.sup.1 is hydrogen, a C.sub.1-4 alkyl group, a C.sub.2-4 hydroxyalkyl group, a C.sub.2-20 acyl group, a phenyl group or a benzoyl group and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently of one another represent hydrogen, hydroxy, halogen, nitro groups, sulfo groups, carboxyl groups, C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups or NR.sup.6 R.sup.7 groups where R.sup.6 and R.sup.7 independently of one another represent hydrogen, C.sub.1-4 alkyl groups or

REFERENCES:
patent: 4750908 (1988-06-01), Rosenbaum et al.
patent: 4875902 (1989-10-01), Grollier et al.
patent: 4921503 (1990-05-01), Anderson et al.
patent: 5190564 (1993-03-01), Lang et al.
patent: 5248684 (1993-09-01), Suzuki et al.
patent: 5261926 (1993-11-01), Lang et al.
patent: 5275626 (1994-01-01), Grollier
patent: 5279616 (1994-01-01), Lang et al.
patent: 5340366 (1994-08-01), Lang et al.

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