Compositions containing nitroaniline dyes having a carbamide sub

Details Compositions containing nitroaniline dyes having a carbamide sub Compositions containing nitroaniline dyes having a carbamide sub

1990-10-31

1991-08-27

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8406, 8407, 8408, 8428, 8429, 8435, 564441, A61K 713, C07C21100

Patent

active

050429884

ABSTRACT:
The novel hair dye compositions containing a compound of the formula: ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be identical or different, are hydrogen, alkyl, hydroxyalkyl, polyhydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl aminoalkyl and dialkylaminoalkyl, each alkyl group and each alkoxy group having from about 1 to about 6 carbons and R.sub.5 is hydrogen or alkyl containing from about 1 to about 6 carbon atoms are disclosed. More specifically, the present invention concerns the inclusion of such compounds of formula I in hair dye compositions as direct dyes, and especially the novel compound 4-(2-hydroxyethylamino)-3-nitrobenzamide. The compounds, some of which are novel, provide a yellow dye base for the hair dyeing compositions.

REFERENCES:
patent: 4337061 (1982-06-01), Bugaut et al.
patent: 4417896 (1983-11-01), Bugaut et al.
patent: 4619666 (1986-10-01), Rose et al.

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