APPLICATION OF SOME NOVEL PYRAZOLE DISPERSE DYES TO SYNTHETIC FABRICS.

In this study, 8 novel pyrazole disperse dyes were applied to polyethylene terephthalate (PET), poly (lactic acid) (PLA) and polyamide 6.6 (PA 6.6) fiber fabrics and their colorimetric and fastness properties were evaluated. The measured a*, b* and hue angle (ho) values of all dyed fabrics exhibited yellow, orange and red color shades. Quite high color strength values (K/S) were measured particularly for dyes containing substitute groups; p-OCH₃ and o-OCH₃. Shade changes of all fabrics after standard washing and sublimation tests were in the commercially adequate range. All dyed PET, PLA and PA 6.6 fabrics exhibited commercially acceptable fastness staining performances with very good to excellent levels. Synthesized novel disperse dyestuffs led to moderate to high light fastness levels particularly in the case of PLA and PET fabrics. [ABSTRACT FROM AUTHOR]