| abstract |
A method of obtaining a new skin dye containing mixtures of tetrakisazo dyes of the formulas 1-3, characterized in that 4,4-diaminodiphylamino-2-sulfonic acid is tetrazed and the obtained tetrazonium compound is coupled with 1-amino-8 acid. -naphthole-3,6-disulfone, then the produced disazium dye of formula 4 is tetrazed and the resulting tetrazonium compound is coupled with a mixture of resorcinol and m-toluenediamine. W eq 1 W e r 2 W e r 3 PL |