| 摘要 |
The invention concerns compositions to simultaneously tan and dye hides, characterized by the fact that they contain at least one tanning compound able to form chromophore groups consisting of at least one member of the group including : natural pyrocatechic derivatives of quebracho, mimosa, acacia and their tannic acids ; natural pyrogallic derivatives of tara, carob and their tannic acids ; naphthalene sulphonic acid condensed with formaldehyde ; naphthalene sulphonic acid ; phenolsulphonic acid ; phenolsulphonic acid condensed with formaldehyde ; gallic acid ; and at least one coupler able to develop with the chromophore groups of the compound tanning the final colour, this coupler belonging to the group including : triphenyl-methano-sulphonic acid ; aniline ; p-amino-aceto-aniline ; urea-1 acid ; p-amino-salicylic acid ; di-nitro-styrene-sulphonic acid ; p-sulphanilic acid ; p-nitro-aniline phenolsulphonic acid ; benzidine H ; benzaldehyde ; N,N dimethyl-aniline ; o-dianisidine Ch-CH. i-ni |
