Nitrosulfide dyes

Abstract

Disclosed are nitro-sulfide dyes of formula (1), their salts, isomers, hydrates and other solvates, wherein R1, R2, R3, independently from each other are hydrogen; C1-C20alkyl or C1-C20alkoxy, which may be substituted by one or more C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2 or hydroxy; C3-C6cycloalkyl; —C(O)H; —C(O)—C1-C5alkyl; —C(O)OH; —C(O)O—C1-C5alkyl; halogen; NO2; OH; SH; phenyl, which may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2 or hydroxy; or a radical of formula (1a) —NR4R5, wherein R4 and R5 independently from each other are hydrogen; C1-C12alkyl, which may be substituted by one or more C1-C5alkyl, C1-C5-alkoxy, hydroxy or —(CO)—H; —(CO)—C1-C5alkyl; phenyl or phenyl-C1-C4alkyl, wherein the phenyl moiety may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2, carboxy or hydroxy; or a radical of formula (2); wherein at least one of the radicals R1, R2 or R3 is NO2; Y1 is C1-C10alkylene; C5-C10cycloalkylene; C5-C10arylene; or C5-C10arylene-(C1-C10alkylene); Z1 is the direct bond; formula (3); or a cationic biradical of a saturated, aromatic or heteroaromatic group; Q1 is —C(O)—; —C(O)O—; —OCO—; —N(R6)—X2—; —CON(R6)—; —(R6)NC(O)—; —O—; —S—; —S(O)—; or —S(O)2—; X1 and X2 independently from each other are the direct bond; C1-C10alkylene; C5-C10cycloalkylene; C5-C10arylene; or C5-C10arylene-(C1-C10alkylene); and R6, R7 and R8 independently from each other are hydrogen; C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C1-C10alkyl(C5-C10aryl); m is 1; or 2; U is hydrogen, if m is 1; or the direct bond, if m is 2; with the proviso that the method does not comprise contacting hair with an enzyme of the type of a protein disulfidisomerase (EC 5.3.4.1). Further, the present invention relates to novel sulfide compounds, compositions thereof, especially comprising other dyes, and to processes for their preparation.

Dependencies are inferred from the claim text.