Dye composition for keratinic fibres containing sulfured metaphenylenediamines, dyeing process and new sulfured metaphenylenediamines and preparation method thereof
AssigneeL'oreal
InventorsAlex Junino, Alain Genet, Alain Lagrange
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Abstract
The invention relates to a dye composition for keratinic fibers comprising an oxidation colorant precursor of the type ortho and/or para and a sulfured metaphenylenediamine having formula (I) ##STR1## wherein Z is alkyl, aralkyl, monohydroxyalkyl or polyhydroxyalkyl, aryl or aminoalkyl, as well as the acid salts thereof, with the condition that R.sub.1 and R.sub.2 do not represent simultaneously hydrogen when Z is alkyl or hydroxyalkyl, as well as the acid salts corresponding to the compounds of formula (I).
Claims2
A sulfur-containing meta-phenylenediamine having the formula ##STR18## wherein Z represents C.sub.1 -C.sub.18 alkyl, aralkyl wherein the alkyl moiety has 1-6 carbon atoms, C.sub.1 -C.sub.6 monohydroxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl, aryl, aminoalkyl having the formula ##STR19## wherein n is an integer ranging from 1 to 6 and R.sub.3 and R.sub.4, each independently, represent hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 hydroxyalkyl or C.sub.2 -C.sub.6 acyl;
- R.sub.1 and R.sub.2, each independently, represent hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 monohydroxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl, C.sub.1 -C.sub.6 monocarbamylalkyl, C.sub.2 -C.sub.6 dicarbamylalkyl, C.sub.1 -C.sub.6 aminoalkyl, C.sub.2 -C.sub.6 acyl, C.sub.2 -C.sub.6 carbalkoxy, carbamyl or mono(C.sub.1 -C.sub.6)alkylcarbamyl, with the proviso that R.sub.1 and R.sub.2 do not simultaneously represent hydrogen when Z represent alkyl or hydroxyalkyl;
- or
- an acid addition salt of said sulfur-containing metaphenylenediamine of formula (I).
Dependencies are inferred from the claim text.