Method and composition for the dyeing of hair with 2,6-diamino-p

Details Method and composition for the dyeing of hair with 2,6-diamino-p Method and composition for the dyeing of hair with 2,6-diamino-p

1986-07-07

1987-12-15

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8409, 8410, 8411, 8412, 546290, 546296, A61K 713

Patent

active

047130806

ABSTRACT:
A method and composition are disclosed for the oxidative coloration of hair, based upon a developer substance-coupler substance combination, employing as coupler substance at least one 2,6-diamino-pyridine derivative according to Formula I ##STR1## in which R.sup.1 and R.sup.2 are the same or different and are each CH.sub.3 or C.sub.2 H.sub.5 and R.sup.3 is hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl, also in the form of the physiologically compatible salts. The coupler substance, preferably 2,6-diamino-3,5-dimethoxy-pyridine, 2,6-diamino-3,5-diethoxy-pyridine and 2-amino-6-(2'-hydroxyethyl)amino-3,5-dimetnoxy-pyridine, should be present in the composition in a concentration from 0.01 to 3.0% by weight, preferably from 0.1 to 2.0% by weight. The coupler substance according to Formula I is storage resistant, well soluble in water and possesses favorable toxicological as well as dermatological characteristics. The coupler substance of Formula I provides, in combination with 1,4-diamino benzene or its derivatives, very intense cold blue tones without red portions, and in combination with 4-aminophenol, strongly lustrous gold-orange tones.

REFERENCES:
patent: 3200040 (1965-08-01), Lange
patent: 4396392 (1983-08-01), Konrad et al.
E. Koenigs, et al, Chemische Berichte, 61, p. 1022, (1928).

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