The active bright red 6C is a monochlorotriazine active azo dye that gives the cellulose a red color with a strong blue tint. Like other triazine active dyes , it is fixed in the process of interaction with the dye of the functional groups of the fiber (or other colored material) to form a covalent bond . At 70–90 ° C in the presence of an alkaline agent, in the hydroxy or amino group of the substance to be painted, the hydrogen atom is replaced by the dye residue, that is, instead of connecting the triazine fragment of the dye with chlorine, a bond is formed with nitrogen or oxygen of the corresponding groups of the substrate being painted.
Getting
Active bright red 6C is obtained starting from the interaction of Al-acid and cyanuric chloride in the presence of soda at 0-5 ° C. A diazo compound from 4-aminotoluene-3-sulfonic acid is combined with the obtained compound.
The dichlorotriazine dye formed is treated with N-methyl aniline in the presence of soda at 40 ° C. Formed monochlorotriazinovy dye Active bright red 6C .
Literature
- B. I. Stepanov "Introduction to the chemistry and technology of organic dyes", ed. 3rd, pererabot. and add., M., "Chemistry", 1984.