The Synthesis and Application of a New Disperse Dye Based on Indoline on Polyester Fibers

Hossein Nezhad, M.; Gharanjig, K.; Moradian, S.

The Synthesis and Application of a New Disperse Dye Based on Indoline on Polyester Fibers

Authors

¹ Department of Organic Colorants, Institute for Color Science and Technology

² Department of Organic Colorants;Center of Excellence for Color science and Technology, Institute for Color Science and Technology

³ Center of Excellence for Color Science and Technology, Institute for Color Science and Technology

Abstract

In this study, a novel disperse dyestuff based on indoline derived from phenothiazine as the starting material using a standard methods was prepared. To this end, phenothiazine was exposed to some consecutive reactions including alkylation, oxidation, nitration, and redox reactions in order to obtain the synthesized disperse dyestuff. All intermediates and the final disperse dyestuff were purified and then characterized by the use of DSC, FTIR, 1HNMR, 13CNMR, elemental analysis and UV-Visible spectrophotometry. Spectrophotometric properties of the prepared dyestuff in various solvents such as toluene, DMF and acetone showed that the synthesized dyestuff has a positive solvatochromism effect as well as appropriate color strength. Finally, the synthesized dyestuff was used to dye polyester fibers at high temperature (i.e. 130 ºC). The measured spectrophotometric attributes of dyed fibers showed that the synthesized dyestuff has a good build up on polyester fibers. In addition, assessment of fastness properties of dyed fibers showed that the synthesized dyestuff has excellent wash and sublimation fastnesses as well as good to very good light fastness.

Keywords