Use, as a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of

Details Use, as a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of Use, as a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of

1988-05-31

1989-09-12

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8410, 8411, 8424, 564443, A61K 713, C07C 9140, C07C 9142

Patent

active

048656194

ABSTRACT:
The invention relates to the use, by way of a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of its addition salts with an acid, in combination with at least one oxidation dye precursor of the para type, for dyeing keratinous fibres and especially human hair.
The hair dyeing compositions according to the invention contain, in a cosmetically acceptable aqueous vehicle, 0.05 to 3.5% by weight of 2,4-diamino-1,3-dimethoxybenzene or one of its salts, which imparts to the hair strong blue colorations when it is combined with p-phenylenediamines or red colorations when it is combined with p-aminophenols, in an oxidizing alkaline medium.

REFERENCES:
patent: 4566876 (1986-01-01), Brown et al.
Handbuch der organischen Chemie, Fourth Edition, Third Supplement, vol. 13, pp. 2144-2145.
Houben-Weyl, Methoden der Organische Chemie, Fourth Ed., vol. XI/1, 1957, pp. 343-406, Glaser et al.

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