Metaphenylenediamines in dyeing compositions for keratinic fiber

Details Metaphenylenediamines in dyeing compositions for keratinic fiber Metaphenylenediamines in dyeing compositions for keratinic fiber

1976-09-13

1981-12-15

Trousof, Natalie

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8401, 8414, 8115, 8116, 8421, 8424, 564166, 564161, A61K 713

Patent

active

043057179

ABSTRACT:
Dye compositions comprising a coupler having to the formula ##STR1## in which formula R.sub.1 and R.sub.2 are identical or different and represent a hydrogen atom or an alkyl radical having 1 to 2 carbon atoms and n represents a number equal to 1 or 2 and a paraphenylenediamine.
This coupler is particularly suitable for use in a dyeing composition comprising paraphenylenediamines responding to the formula ##STR2## or the corresponding acid salts; formula in which R.sub.1, R.sub.2 and R.sub.3 are identical or different and represent a hydrogen atom, an alkyl or alkoxy radical having 1 to 2 carbon atoms, R.sub.4 and R.sub.5 are identical or different and represent a hydrogen atom, a alkyl radical, hydroxyalkyl, alkoxyalkyl in which the alkoxy group comprises 1 to 2 carbon atoms, carbamylalkyl, mesylaminoalkyl, acetylaminoalkyl, ureidoaminoalkyl, carbethoxyaminoalkyl, the alkyl groups in R.sub.4 and R.sub.5 having 1 to 3 carbon atoms, with the reservation that R.sub.1 or R.sub.3 represents hydrogen when R.sub.4 and R.sub.5 do not represent a hydrogen atom.

REFERENCES:
patent: 2374337 (1945-04-01), Dickey et al.
patent: 3200040 (1965-08-01), Lange
patent: 3658454 (1972-04-01), Paul
patent: 3816529 (1974-06-01), Loffelman
patent: 3884627 (1975-05-01), Brody et al.

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