Hair dyeing agents

Details Hair dyeing agents Hair dyeing agents

1986-02-06

1987-04-28

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8423, A61K 713

Patent

active

046611150

ABSTRACT:
New coupling or shading (nuance) components are described which in combination with pertinent developers are used for dyeing of hair. These coupling components are dinitropyridine derivatives of the general formula: ##STR1## whereby the substituents X, Y, R.sub.1 and R.sub.2 have the meaning given.

REFERENCES:
patent: 3536436 (1970-10-01), Lange
patent: 3826608 (1974-07-01), Wiskott
patent: 3862157 (1975-01-01), Wiskott
patent: 4213758 (1980-07-01), Rose et al.
patent: 4473375 (1984-09-01), Claussen
patent: 4487607 (1984-12-01), Rose et al.
patent: 4511360 (1985-04-01), Monnais et al.
patent: 4567272 (1986-01-01), Orth et al.

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