摘要:
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein R is hydrogen, hydroxy, nitro, amino, halogen, C1 to C5 alkyl or haloalkyl, C1 to C5 alkoxy, C1 to C5 hydroxyalkyl and C1 to C5 hydroxyalkoxy; Ar is an aromatic group, preferably an aromatic group selected from a furanyl, thienyl, pyridinyl, phenyl, 2,3-dihydrobenzo[1,4]dioxin-5 or 6-yl or benzo[1,3]dioxol-4 or 5-yl group; and y =1 to 3.
摘要:
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of formula (1) wherein R is selected from the group consisting of C1 to C2 alkyl and hydroxyethyl; R1 is selected from the group consisting of a hydrogen, hydroxy, nitro, halogen, C¿1? to C5 alkyl or haloalkyl, C1 to C5 alkoxy or cycloalkoxy, C1 to C5 hydroxyalkyl and C1 to C5 hydroxyalkoxy; Ar is an aromatic group, preferably an aromatic group selected from the group consisting of a furyl, thienyl, pyridyl, phenyl, 2,3-dihydro-benzo[1,4]dioxin-5 or -6-yl or benzo[1,3]dioxol-4 or 5-yl group; and y = 1 to 3.
摘要:
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of formula (1): wherein X is selected from halogen; R3 is selected from the group consisting of C?1 and C2¿ alkyl and hydroxyethyl; and R and R?1 and R2 ¿are each independently selected from C?1 to C22¿ alkyl or C?1 to C22¿ mono or dialkyl groups, or two of R, R?1 and R2¿ together with the nitrogen atom which they are attached form a C3 to C6 cycloaliphatic or a C?3 to C14¿ aromatic group, the cycloaliphatic or aromatic group optionally containing in their rings one or more hetero atoms selected from O, S and N atoms.
摘要:
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1), where R1 and R2 are each individually selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C5 mono or dihydroxyalkyl group, phenyl or benzyl optionally substituted with an alkoxy group, or R1 and R2 together with the nitrogen atom to which they are attached form a piperazine, piperidine, imidazole, or morpholine ring.