Synthesis and Application of New Homobifunctional Reactive Triazine Dyes Containing UV Absorber.

Two new homobifunctional triazine reactive dyes, derivatives of H acid and anthraquinone, containing a fragment of 4,4′-diaminostilbene-2,2′-disulfonic acid have been synthesized. They and their dichlorotriazine dye intermediates were evaluated for applicability on textiles and paper. The degree of exhaustion and fixation of the dyes and the fastness properties of dyed cotton samples of washing, acidic and alkaline perspiration, dry and wet rubbing, and light fastness were assessed. Offset printing paper composition, consisting of bleached softwood and hardwood cellulose fibers in a ratio of 1:1, was dyed with the investigated reactive dyes. The hydrophobicity of the paper was increased by the addition of alkyl ketene dimer. Natural calcium carbonate was used as a filler. The main mechanical and hydrophobic properties of the dyed papers were examined. The color coordinates of the examined paper and textile samples were determined using the CIE Lab color space. The photostability of the dyes in water solution was studied. It was found that the introduction of a fragment of 4,4′-diaminostilbene-2,2′-disulfonic acid in the dye molecule increases the photostability by 10%. As a conclusion of the studies, it was found that both reactive dyes could have applications in textile and paper production. Better results were obtained for the homobifunctional triazine reactive dyes. [ABSTRACT FROM AUTHOR]