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Dyeing and Fastness Properties of Red Disperse Dyes from Heterocyclic Compounds  

Park Jong Ho (Department of Textile Engineering, NITRI, Konkuk University)
Lee Kwon Sun (Department of Textile Engineering, NITRI, Konkuk University)
Koh Joonseok (Department of Textile Engineering, NITRI, Konkuk University)
Bae Jin-Seok (Korea Dyeing Technology Center)
Kim Sung Dong (Department of Textile Engineering, NITRI, Konkuk University)
Publication Information
Textile Science and Engineering / v.42, no.5, 2005 , pp. 310-315 More about this Journal
Abstract
Disperse dyes derived from heterocyclic compounds such as pyridone, diaminopyridine, carbazole, and 2-phenylindole, have been known to possess high light fastness. Four heterocyclic azo disperse dyes were synthesized by using three diaminopyridines and 2-phenylindole as coulping components and their dyeing and fastness properties were compared with an aminoazobenzene disperse dye. The wavelengths of maximum absorption of the synthesized heterocyclic dyes were in the range of 508-528 nm. The molar extinction coefficients of dyes having diaminopyridine were higher than that of an aminoazobenzene disperse dye. The dyes derived from aminopyridine having phenyl group exhibited poor to moderate build-up compared to the aminoazobenzene dye. Wash, light, heat and rubbing fastnesses of heterocyclic azo disperse dyes were good to excellent. The light fastness was improved by 0.5-1 grade by the addition of a UV absorber.
Keywords
heterocyclic; diaminopyridine; azo dye; dyeing; PET; lightfastness;
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