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US 2014/0157529 A1Published application
Disulfide dyes
AssigneeBASF SE
InventorsSophie Marquais-Bienewald, Christian Cremer, Beate Frohling
Life of this patent
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Abstract
Disclosed are compounds of formula (1) or formula (2). The compounds are useful for the dyeing of organic materials, such as keratin fibers, wool, leather, silk, cellulose or polyamides, especially keratin-containing fibers, cotton or nylon, and preferably hair, more preferably human hair. (1) (2). A-(X1)p—(Csat)r—S—S—(Csat)q—(X2)p-D (1)
Claims24
Compounds of formula
- A-(X1)p—(Csat)r—S—S—(Csat)q—(X2)p-D (1)
- or formula
- wherein
- A is selected from a residue of a cationic dye;
- X1 and X2, independently from each other are selected from saturated or unsaturated C1-C30hydrocarbon chains, optionally interrupted by at least one bivalent group chosen from —N(R1)—;
- N+(R1)(R2)—;
- —O—;
- —S—;
- —CO—;
- —SO2—;
- and/or optionally interrupted by an optionally substituted, saturated or unsaturated, fused or non-fused, aromatic or nonaromatic (hetero)cyclic radical optionally comprising at least one identical or different heteroatom;
- V is C1-C3alkylene, optionally substituted by hydroxy;
- D is a radical chosen from —N(CO)—R3;
- Csat and C′sat independently from each other are optionally substituted, optionally cyclic, linear or branched C1-C18alkylene chains;
- R1 and R2, independently from each other are chosen from hydrogen;
- C1-C4alkyl;
- hydroxyalkyl;
- or aminoalkyl;
- R3 is C1-C4alkyl;
- and
- p, q and r independently from each other are 0;
- or 1.
19 more elements
A dyeing composition comprising, in an appropriate cosmetic medium, at least one disulphide dye chosen from the dyes of the formula (1) and (2).
Dependencies are inferred from the claim text.