2-nitro-para-phenylenediamines substituted by sulphur in the 5-p

Details 2-nitro-para-phenylenediamines substituted by sulphur in the 5-p 2-nitro-para-phenylenediamines substituted by sulphur in the 5-p

1997-09-30

1999-02-23

Krass, Frederick

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

8414, 8428, 8429, 564341, 564367, 564369, 564440, C07C32336, A61K 713

Patent

active

058746188

ABSTRACT:
Novel nitrobenzene compounds of the nitroparaphenylene-diamine type substituted by sulphur in the 5-position are disclosed. These compounds are intended especially for the dyeing of keratin fibers 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.

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