• Tapansinh V. Parmar
• Hemangi H. Desai

Bi-functional reactive dyes are colored compounds that have more than one reactive moiety per molecule or groups, capable of forming covalent bonds between dye ions or molecules and the substrate. This bi-functional reactive dye was synthesized with S- Triazine and Vinyl Sulphone groups via 5-(4-Bromo Phenyl)-1,3-Oxazole-2-Amine. This intermediate was diazotized, coupled with cyanurated N Phenyl Peri acid and other various cyanurated coupling components to synthesize the such bi-functional reactive dyes by using PCVS and % exhaustion & % fixation of dyes were determined using glauber salt as fixing agent at various temperature condition. Washing & light fastness were determined. The overall result concluded that bromo group was introduced in para position of benzene ring has been induced for increasing substantivity & reactivity of dye molecule.

Bi-functional, Covalent bond, % exhaustion, fastness, % fixation.

"Hetero Bi-functional Reactive Dyes and Dyeing on Natural fibres and Their Dyeing condition to increase Dyeing Properties ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 2, page no.a342-a348, February-2022, Available :http://www.jetir.org/papers/JETIR2202043.pdf

"Hetero Bi-functional Reactive Dyes and Dyeing on Natural fibres and Their Dyeing condition to increase Dyeing Properties ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 2, page no. ppa342-a348, February-2022, Available at : http://www.jetir.org/papers/JETIR2202043.pdf