Parabase or "para-Amino-phenyl b-Sulphato Ethyl sulphone" is one of the most important compounds in synthesis of the Vinyl Sulfone Reactive dyes.Vinyl Sulfone dyes are a Considering the importance of Parabase in synthesis the Vinyl Sulfone dyes, and due to the lack of intention to produce this important matter in Iran, the objective of current study was to produce Parabase and reviews of reaction conditions leads to production of this material, and then achieve to produce monofunctional and bifunctional Vinyl Sulfone reactive dyes by using Parabase. Wool fabric were dyeing with synthesized dyes (Vilolet VS , Red VS2) and acid dyes (C.I Acid Violet7 ,C.I Acid Red 249). the wash fastness roperties of wool dyed with leveling and milling Acid dyes compared. productive research was also synthesis Parabase and reviews of reaction conditions leads to production of this material, reactive dyes by a two factor Vinyl Sulfone Using Parabase be made productive. Using synthesized Parabase, monofunctional Reactive dye (Vilolet VS) and bifunctional reactive dye (Red VS2) were produced. For proving the existence of reactive groups in synthesized dyes, wool fabrics were dyeing with these dyes, C.I Acid Violet7 and C.I Acid Red 249. The reason for choosing these two acidic dyes was the relatively chemical structure similarity between these dyes and synthesized dyes. Washfastness of wool fabrics dyeing with mentioned dyes was measured based on international standard ISO-105-CO4.The results showed the better washing fastness of wool fabrics dyeing with synthesized dyes in comparison to product of wool dyeing with acid dyes. In order to more accurately analyze, the results of washfastness were investigated by using reflection spectrophotometer. Calorimetrically data of wool dyeing with Vilolet VS , Red VS2 synthesized dyes and , C.I Acid Violet7 and C.I Acid Red 249 Acidic dyes were examined carefully. The results of and the stability F K also confirmed the better wash fastness of wool product dyeing with synthesized dyes in comparison to product of wool dyeing with acid dyes. According to the results and considering the relatively close chemical structure similarity between synthesized dyes and acidic dyes, it could be mentioned that the better washfastness of synthesized dyes by comparison with acidic dyes shows the creation of reactive Vinyl Sulfone groups in synthesized dyes. At the end, in order to report, rubbing fastness and light fastness of synthesized dyes were also calculated
