Sulfated metaaminophenols and applications thereof, particularly

Details Sulfated metaaminophenols and applications thereof, particularly Sulfated metaaminophenols and applications thereof, particularly

1993-10-04

1995-09-19

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8406, 8412, 8421, 8587, A61K 713

Patent

active

054512360

ABSTRACT:
Sulfated metaaminophenols are disclosed and have the formula ##STR1## where: Z is alkyl, aralkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl, aminoalkyl;
R.sub.1 is hydrogen, alkyl, monohydroxyalkyl, polyhydroxyalkyl, monocarbamylalkyl, dicarbamylalkyl, aminoalkyl, acylaminoalkyl, carbalkoxyalkyl, carbamyl, or monoalkylcarbamyl;
R.sub.2 is hydrogen, alkyl, monohydroxyalkyl, alkoxy;
and their acid salts.
Intermediate products used for their preparation are also disclosed. These sulfated metaaminophenols are used to dye keratinous fibers.

REFERENCES:
patent: 3424749 (1969-01-01), Pfenninger
patent: 3811831 (1974-05-01), Bugaut et al.
patent: 4200466 (1980-04-01), Fujiwhara et al.
patent: 5084067 (1992-01-01), Junio et al.
Dallacker et al, "Zur Einfuhrung von Schwefel in Abkommlinge des Brenzcatechinmethylenathers", Annalen der Chemie vol. 689, Apr. 1965, pp. 156-162.

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