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http://dx.doi.org/10.5764/TCF.2021.33.1.10

Synthesis of Azo Based Disperse Dyes for Dyeing Polyester Fiber in Supercritical Carbon Dioxide  

Shin, Seung-Rim (Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology)
An, Kyoung-Lyong (Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology)
Lee, Sunhye (Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology)
Ko, Eunhee (Smart&ECO Textile R&D Team, Korea High Tech Textile Research Institute)
Lee, In-Yeol (Smart&ECO Textile R&D Team, Korea High Tech Textile Research Institute)
Kim, Changil (R&D Center, Archroma Korea LTD)
Jun, Kun (Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology)
Publication Information
Textile Coloration and Finishing / v.33, no.1, 2021 , pp. 10-23 More about this Journal
Abstract
In order to synthesize the dye suitable for supercritical carbon dioxide(ScCO2) dyeing, a series of azo based disperse dyes were prepared using various aniline derivatives as diazo components and indol derivatives as coupling components. Dyeing process in ScCO2 of the synthesized dyes was performed on PET fiber at 120℃ for 2 hrs under 250bar pressure with 0.5% o.w.f. of dye concentration. The absorption maxima varied from 400 to 580nm depending on the substituted groups in aniline derivatives and the indol derivatives. The dyes showed high molar extinction coefficients(ε) of 27,000~61,000M-1cm-1. Dyed PET fiber exhibited excellent brightness and good light, washing and perspiration(acid/alkali) fastness properties.
Keywords
azo based disperse dyes; supercritical carbon dioxide; polyester; dyeing; fastness;
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