Disclosed are compounds of formula. Method of dyeing keratin-containing
fibers comprising treating the fiber with at least one sulfide dye of
formula (1), their salts, isomers, hydrates and other solvates, wherein
R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently from each other are
hydrogen; C.sub.1-C.sub.20alkyl; C.sub.1-C.sub.20alkoxy;
C.sub.3-C.sub.6cycloalkyl; halogen; NO.sub.2; OH; SH; or a radical of
formula (1a) wherein R.sub.5 is hydrogen; or C.sub.1-C.sub.20alkyl;
R.sub.6, R.sub.7 and R.sub.8 independently from each other are hydrogen,
C.sub.1-C.sub.20alkyl, C.sub.4-C.sub.12cycloalkyl,
C.sub.6-C.sub.13aralkyl; phenyl-C.sub.1-C.sub.5alkyl; or R.sub.6 and
R.sub.7 together with the linking nitrogen atom form a
C.sub.4-C.sub.12-membered heterocyclic ring which may be interrupted by
one or more than one- O-- or --NH-- groups; Y.sub.1 is
C.sub.1-C.sub.10alkylene; C.sub.5-C.sub.10cycloalkylene;
C.sub.5-C.sub.10arylene; or
C.sub.5-C.sub.10arylene-(C.sub.1-C.sub.10alkylene); T.sub.1 is a radical
of formula (1b); or --O--(X.sub.3).sub.s; Q.sub.1 is a cationic biradical
of a saturated, aromatic or heteroaromatic group; or a radical of formula
(1c); Z.sub.1 is --C(O)--; --(CH.sub.2CH.sub.2--O).sub.1-5--; --C(O)O--;
--OCO--; CON(R.sub.9)--; --X.sub.4--CON(R.sub.9)--; --(R.sub.9)NC(O)--;
--O--; --S--; --S(O)--; or --S(O).sub.2--; R.sub.9, R.sub.10 and R.sub.11
each independently from each other are hydrogen; C.sub.1-C.sub.14alkyl;
C.sub.2-C.sub.14alkenyl; C.sub.6-C.sub.10aryl;
C.sub.6-C.sub.10aryl-C.sub.1-C.sub.10alkyl; or
C.sub.1-C.sub.10alkyl(C.sub.5-C.sub.10aryl); X.sub.1, X.sub.2, X.sub.3
and X.sub.4 independently from each other are C.sub.1-C.sub.18alkylene;
--(CO)--C.sub.1-C.sub.18alkylene, C.sub.1-C.sub.18arylene;
C.sub.6-C.sub.18arylene-C.sub.1-C.sub.12alkylene; or
--(OCH.sub.2CH.sub.2).sub.n--O--; n is a number from 1 to 5; p, r, s, t
and u independently from each other are a 0 or 1; m is 1; or 2; U is
hydrogen, if m is 1; and U is the direct bond, if m is 2. The compounds
are useful for the dyeing of organic materials, such as keratin fibers,
preferably human hair. The dyes are distinguished by deep dying having
good fastness properties with respect to washing, light, shampooing and
rubbing. ##STR00001##
