Synthesis and application of alkyl-substituted disazo yellow dyes for unmodified polypropylene fiber |
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| Authors: | Taekyeong Kim Jongsuc Jung Songi Son Seokhan Yoon Mikyung Kim Jin-Seok Bae |
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| Institution: | (1) Department of Textile System Engineering, College of Engineering, Kyungpook National University, Daegu, 702-701, Korea;(2) Department of Advanced Organic Materials Science and Engineering, Kyungpook National University, Daegu, 702-701, Korea;(3) Korea Dyeing Technology Center, Daegu, 703-834, Korea |
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| Abstract: | The several disazo dyes having different alkyl substituents were synthesized to dye unmodified polypropylene fiber. The affinity
of the dyes onto unmodified polypropylene was increased with the increase of the length of alkyl substituents. Therefore,
the heptyl-substituted dye having the longest alkyl group in this experiment showed very high color strength of dyeings with
K/S value of over 24 at maximum absorption wavelength. The color fastnesses to washing, rubbing and light were also improved
significantly for the longer alkyl substituted dyes, so that the heptyl-substituted dye exhibited a rating of 4∼5 for all
kinds of fastnesses. |
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| Keywords: | Polypropylene Disperse dye Disazo dye Alkyl substitution Dyeing |
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