Journal of Polymer Research

, Volume 11, Issue 4, pp 285–291 | Cite as

Dyeing nylon-6,6 with some hydrophobic reactive dyes by supercritical processing

  • Shen Kung Liao


Nylon-6,6 fibers, spun from the polyamide (polyhexamethylene diamine adipate), are increasingly required to be dyed with high washing fastness. Nylon-6,6 were dyed with hydrophobic reactive dyes synthesized in our laboratory, using supercritical carbon dioxide as the solvent system. Structures of four hydrophobic reactive dyes and their covalent force with nylon-6,6 fibers were confirmed by FTIR, MS and NMR analysis. Nylon-6,6 were also dyed with C.I. disperse red 2 to compare the result with specimen dyed by hydrophobic reactive yellowish red dye (dye I), which further demonstrated that covalent force was formed between dye-fiber interaction. Dye uptake was moderate to good and the dyed fabrics had very good fastness properties. Results of the latter studies indicated that dyeing nylon-6,6 in supercritical carbon dioxide is feasible.

Key words

hydrophobic nylon-6,6 supercritical vinylsulphone washing fastness 


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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Shen Kung Liao
    • 1
  1. 1.Department of Fiber and Composite MaterialsFeng Chia UniversityTaichungTaiwan R.O.C.

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