초록 ▼

Dyes selected from 4,5-diiminopyrazolines or their 4-ylideneamino-5-aminopyrazole tautomeric forms, a process for their preparation, and their use as direct dyes in dye compositions for keratin fibers, in particular for human keratin fibers. The dyes may also be used in lightening or non-lightening

Dyes selected from 4,5-diiminopyrazolines or their 4-ylideneamino-5-aminopyrazole tautomeric forms, a process for their preparation, and their use as direct dyes in dye compositions for keratin fibers, in particular for human keratin fibers. The dyes may also be used in lightening or non-lightening dye compositions for the direct dyeing of keratin fibers, and in dyeing processes using these compositions.

대표청구항 ▼

[ What is claimed is:] [31.] A 4,5-diiminopyrazoline dye of formula (I'): [ STR 23 ] or the 4-ylideneamino-5-aminopyrazole tautomeric form thereof of formula (II'): [ STR 24 ] wherein: R'.sub.1 and R'.sub.3, which may be identical or different, represent a hydrogen atom; a C.sub.1 -C.sub.6 alkyl rad

[ What is claimed is:] [31.] A 4,5-diiminopyrazoline dye of formula (I'): [ STR 23 ] or the 4-ylideneamino-5-aminopyrazole tautomeric form thereof of formula (II'): [ STR 24 ] wherein: R'.sub.1 and R'.sub.3, which may be identical or different, represent a hydrogen atom; a C.sub.1 -C.sub.6 alkyl radical; a C.sub.2 -C.sub.4 hydroxyalkyl radical; a C.sub.2 -C.sub.4 aminoalkyl radical; a phenyl radical; a phenyl radical substituted with a halogen atom or with a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro, trifluoromethyl, amino or C.sub.1 -C.sub.4 alkylamino radical; a benzyl radical; a benzyl radical substituted with a halogen atom or with a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, methylenedioxy or amino radical; ora radical: [ STR 25 ] wherein m and n, which may be identical or different, represent an integer ranging from 1 to 3;D represents oxygen or --NH--;X represents hydrogen or CH.sub.3 ;Y represents CH.sub.3 or OR.sub.4, wherein R.sub.4 represents a hydrogen, methyl or ethyl;and R'.sub.3 may also represent an amino radical;R'.sub.2 represents a hydrogen atom; a C.sub.1 -C.sub.6 alkyl radical; a C.sub.1 -C.sub.4 hydroxyalkyl radical; a C.sub.1 -C.sub.4 aminoalkyl radical; a C.sub.1 -C.sub.2 alkylthio radical; a C.sub.1 -C.sub.5 alkoxy radical; a trifluoromethyl, cyano or carboxyl radical; a phenyl radical; a phenyl radical substituted with a halogen atom or with a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro, trifluoromethyl, amino or C.sub.1 -C.sub.4 alkylamino radical; a benzyl radical; a benzyl radical substituted with a halogen atom or with a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro, trifluoromethyl, amino or C.sub.1 -C.sub.4 alkylamino radical; a heterocycle selected from thiophene, furan or pyridine; ora radical: EQU --(CH.sub.2).sub.p --O--(CH.sub.2).sub.q --OR.sub.5wherein p and q, which may be identical or different, are integers ranging from 1 to 3; and R.sub.5 represents hydrogen or methyl;A' represents a radical: [ STR 26 ] and B' represents, a radical: [ STR 27 ] wherein: Z.sub.1 represents a hydroxyl radical; a C.sub.1 -C.sub.4 alkoxy radical; an amino radical; an acetamido radical; a C.sub.1 -C.sub.4 alkylamino radical; a C.sub.1 -C.sub.4 hydroxyalkylamino radical; a C.sub.1 -C.sub.4 aminoalkylamino radical; a radical NR.sub.10 R.sub.11, wherein R.sub.10 and R.sub.11, which may be identical or different, represent a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 hydroxyalkyl or C.sub.2 -C.sub.4 aminoalkyl radical;R.sub.6, R.sub.7, R.sub.8 and R.sub.9, which may be identical or different, represent a hydrogen atom; a C.sub.1 -C.sub.4 alkyl radical; a C.sub.1 -C.sub.4 alkoxy radical; a C.sub.1 -C.sub.4 alkylthio radical; an amino radical; a C.sub.1 -C.sub.4 alkylamino radical; a carbamoylmethylamino radical; a C.sub.2 -C.sub.4 hydroxyalkyl radical; a C.sub.2 -C.sub.4 monohydroxyalkoxy radical; a C.sub.2 -C.sub.4 dihydroxyalkoxy radical; a C.sub.1 -C.sub.2 carboxyalkoxy radical; a chlorine, bromine or fluorine atom; a C.sub.1 -C.sub.2 trifluoroalkyl radical;a radical: [ STR 28 ] wherein m and n have the same meanings as recited above; D, X and Y have the same meanings as recited above; or a radical NR.sub.10 R.sub.11, wherein R.sub.10 and R.sub.11 have the same meanings as recited above;Z.sub.2 represents O or NR.sub.10, wherein R represents H, an acetyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 hydroxyalkyl or C.sub.1 -C.sub.4 aminoalkyl radical; it being understood that the alkyl or alkoxy radicals of the groups defined above may be linear or branched with the proviso that:(i) when R'.sub.1 represents phenyl, R'.sub.2 represents methyl and R'.sub.3 represents hydrogen, A' is other than 4-dimethylaminophenyl and 4-diethylaminophenyl; and(ii) when R'.sub.1, R'.sub.2 and R'.sub.3 represent hydrogen, A' is other than the para-(2-methyl-5-aminophenol) and para-(1,3-diaminobenzene) radicals.