2-nitro-paraphenylenediamines substituted by sulphur in the 5-po

Details 2-nitro-paraphenylenediamines substituted by sulphur in the 5-po 2-nitro-paraphenylenediamines substituted by sulphur in the 5-po

1996-12-31

1998-04-07

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8407, 8429, 8587, A61K 713

Patent

active

057359105

ABSTRACT:
Novel nitrobenzene compounds of the nitroparaphenylenediamine type substituted by sulphur in the 5-position are disclosed. These compounds are intended especially for the dyeing of keratin fibres and in particular human hair. A process for their preparation, dyeing compositions in which these compounds are present and a dyeing process in which these compositions are used are also disclosed.

REFERENCES:
patent: 4863482 (1989-09-01), Junino et al.
patent: 5387718 (1995-02-01), Kohler et al.
In re Mehta, 146 USPQ 284-290 (CCPA 1965).

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