Disperse Dyes Based on Aminothiophenes:  Their Dyeing Applications on Polyester Fabrics and  Their Antimicrobial Activity

The azo and styryl disperse dyes were synthesized by using 2-hydroxy-1,4-naphthoquinone (Lawsone) 1 and different substituted aromatic anilines and/or aldehydes. The structures of the dyes were confirmed using FT-IR, 1 H-NMR, MS, and HRMS spectral analysis. The dyes displayed a broad absorption maximum in the visible region between 426 and 490 nm. The present paper deals with the application of azo and styryl disperse dyes on polyester and nylon fiber, color characteristics, and fastness properties. The color strength (K/S value) has been found to be very good in all dyed polyester samples. The color fastness with respect to light exposure, washing, and rubbing was quite satisfactory for all dyed polyester compared to the nylon samples.

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“…HCl (5 ml) in 2 ml water and cooled to 0-5 o C. The solution of NaNO 2 Reported dyes in reference [16].…”

Section: Materials and Equipmentsmentioning

confidence: 99%

Disperse styryl and azo dyes for polyester and nylon fibre: Synthesis, optical properties having the 1,2,4-triketo naphthoquinone skeleton

2015

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“…The pyridazine derivatives 6b,c were used as starting material to obtain some fused azines [30]. Thus, the dihydropyridazines 6b,c were reacted with elemental sulphur in ethanol containing little amount of triethylamine to afford the thienopyridazine derivatives 7a,b.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Some Novel Pyridazine, Thienopyridazine, Pyrazolopyridine, Pyridopyrazolopyrimidine and Pyridopyrazolotriazine Derivatives with Their Antimicrobial Activity

2014

Can Chem Trans

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Coupling of compound 1 with diazotized aromatic amines in ethanol afforded the arylhydrazones 3a,b. Fusion of 3a,b with active methylene derivatives 4a,b afforded the pyridazine derivatives 6a-d. Also, when compounds 6b,c were reacted with elemental sulphur afforded the thienopyridazine derivatives 7a,b. Treatment of compound 8 with hydrazine hydrate produced pyrazolopyridine derivative 9. Pyridopyrazolopyrimidines (12-19) and pyridopyrazolotriazines 21, 22a,b were achieved by the reaction of pyrazolopyridine with different reagents in basic media. The antimicrobial activities of the new compounds were also evaluated. The newly synthesized compounds were characterized by IR, 1 H NMR and 13 C-NMR spectral studies.

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“…The colour yields of the dyed samples were determined by using the light reflectance technique performed on UV-Vis spectrophotometer. The colour strengths, expressed as K/S values, were determined by applying the Kubelka-Mink equation [11,12].…”

Section: Colour Measurementsmentioning

confidence: 99%

“…The dyeing properties on the polyester fabrics were evaluated in terms of their fastness properties (e.g., fastness to washing, perspiration and light). The color of dyeing on polyester fabrics is expressed in terms of CIELAB colour space values (Table 4), and the following CIELAB coordinates were measured: lightness or darkness (L*); brightness or dullness (chroma (C*)); hue angle (h) from 0 to 360 °; a*, whose value represents the degree of redness (positive) and greenness (negative); and b*, whose value represents the degree of yellowness (positive) and blueness (negative) [12].…”

Section: Dyeing Propertiesmentioning

confidence: 99%

Synthesis, characterization and antimicrobial activity, and applications of new azo pyridone disperse dyes on polyester fabric

et al. 2014

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KEYWORDSThree components; ethyl cyanoacetate, ethyl amines, and methyl propionylacetate were condensed using solid supports in microwave to give 1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (9) that was then coupled with aromatic diazonium salts to give the corresponding arylhydrazono-1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile disperse dyes, 10a-g. Structures of the afforded compounds were confirmed by (IR, NMR, EI/MS) and one of them was further confirmed by X-ray crystallography (10g). Fastness properties of the reported dyes were intensively examined against light, perspiration and washing fastness, exhibiting moderate, very good and excellent fastness levels, respectively. The antimicrobial activity of the dyes were tested against different bacterial strains of Gram positive and Gram negative characteristics, and yeast, at where most of them showed promising activities against such test organisms.

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Disperse Dyes Based on Aminothiophenes: Their Dyeing Applications on Polyester Fabrics and Their Antimicrobial Activity

Cited by 24 publications

References 14 publications

Disperse styryl and azo dyes for polyester and nylon fibre: Synthesis, optical properties having the 1,2,4-triketo naphthoquinone skeleton

Disperse styryl and azo dyes for polyester and nylon fibre: Synthesis, optical properties having the 1,2,4-triketo naphthoquinone skeleton

Synthesis of Some Novel Pyridazine, Thienopyridazine, Pyrazolopyridine, Pyridopyrazolopyrimidine and Pyridopyrazolotriazine Derivatives with Their Antimicrobial Activity

Synthesis, characterization and antimicrobial activity, and applications of new azo pyridone disperse dyes on polyester fabric

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