SYNTHESIS AND INVESTIGATION OF SOME BIS(DICHLOROTRIAZINE) REACTIVE DYES CONTAINING STABILIZER FRAGMENT
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2023-01-01
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Abstract
Three bis(dichlorotriazine)reactive dyes containing a residue of 4,4’-diaminostilbene-2,2’-disulfonic acid as bridging group between two identical chromophores were synthesized. The dyes were evaluated on cotton and compared to commercial dichlorotriazine dye C.I. Reactive dye 1. The degrees of exhaustion and fixation were assessed. The optical properties - L*, a*, b*, C*, and h* from the CIE Lab colour space of the resulting textile samples have been examined. The photostability of the dyes and dyed samples was investigated. As a result of the studies carried out it was found out that with all reactive dyes, textile samples with uniform colouring and similar colour shades were obtained. The introduction of stabilizer fragment in dye molecule increases the photostability with 20 - 25 %.