scholarly journals Synthesis and dyeing performance of some amphiphilic naphthalimide azo disperse dyes on polyester fabrics

2020 ◽  
Vol 85 (10) ◽  
pp. 1253-1264
Author(s):  
Umar Ameuru ◽  
Mohammed Yakubu ◽  
Kasali Bello ◽  
Peter Nkeonye ◽  
Azim Halimehjani
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption Spectra ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Light Fastness ◽  
Visible Absorption ◽  
Polyester Fabrics ◽  
Dyeing Performance ◽  
Azo Disperse Dyes ◽  
Monoazo Disperse Dyes

A series of monoazo disperse dyes were synthesized by coupling diazotized 4-amino-N-dodecyl-1,8-naphthalimide with N,N-dialkyl anilines and naphthol derivatives. The synthesized intermediates and the dyes were characterized using FTIR, 1H-NMR, 13C-NMR, mass spectroscopy and elemental analysis (CHN). Visible absorption spectra of the dyes were examined in solvents of different polarities. The electronic absorption spectra cover a wavelength (?max) range of 515-535 nm in DMF at uniformly absorption intensity between 1.59-3.00?104 L mol-1 cm-1. The dyes gave deep and bright intense hues of light violet, maroon, pink and neon red on polyester fabrics. The dyes generally showed good washing and perspiration rating but poor to moderate light fastness properties on woven polyester fabric and could be recommended for commercial outlets.

scholarly journals Synthetic utility of 5-amino-6-cyano-2-phenylthieno[2,3-d] oxazole

2005 ◽  
Vol 70 (11) ◽  
pp. 1249-1253 ◽  
Author(s):  
V.R. Kanetkar ◽  
R.R. Walavalkar
Keyword(s):  
Ir Spectroscopy ◽  
Absorption Spectra ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Synthetic Utility ◽  
Azo Disperse Dyes

This paper describes the synthesis of 5-amino-6-cyano-2-phenylthieno[ 2,3-d]oxazole and its utilization for the preparation of a range of azo disperse dyes. These aryl azo disperse dyes were applied on polyester fabric and their fastness properties were evaluated. The dyes were characterized by NMR and IR spectroscopy. The visible absorption spectra of these dyes were Recorded.

scholarly journals Assessment of Dyeing Properties of Novel Bisazo-Bisazomethine Disperse Dyes on Polyester Fabric

2011 ◽  
Vol 8 (3) ◽  
pp. 1218-1225 ◽  
Author(s):  
B. C. Dixit ◽  
D. M. Patel
Keyword(s):  
Aromatic Amines ◽  
Polyester Fabric ◽  
Spectral Studies ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Polyester Fabrics ◽  
H Nmr ◽  
Dyeing Performance ◽  
Uv Visible

Novel bisazo-bisazomethine disperse dyes were prepared by the coupling of diazotized solutions of various aromatic amines with 2,2'-{sulfonylbis [4,1-phenylene nitrilomethylylidene]} diphenol (SB). Above Schiff base was prepared by the condensation of 2-hydroxybenzaldehyde with 4,4’-sulphonyl- dianiline (Dapson). The resultant dyes were characterized by elemental analysis, IR and1H NMR spectral studies. The UV Visible absorption spectral data were investigated in dimethylformamide (DMF) and are discussed in terms of structural property relationship. Their dyeing performance as disperse dyes has been assessed on polyester fabrics. The results show that a better hue was obtained on polyester fabrics and have mild to moderate fastness properties.

scholarly journals Synthesis of monoazo disperse dyes based on 2-aminoheterocycles and their dyeing performance on nylon fabrics

2000 ◽  
Vol 65 (11) ◽  
pp. 773-780 ◽  
Author(s):  
Hari Maradiya ◽  
Vithal Patel
Keyword(s):  
Absorption Spectra ◽  
Elemental Analysis ◽  
Disperse Dyes ◽  
Visible Absorption ◽  
Dyeing Performance ◽  
Nylon Fabric ◽  
Wide Range ◽  
Rf Values ◽  
Monoazo Disperse Dyes ◽  
Dyed Fabric

Novel monoazo disperse dyes based on various 2-aminoheterocycles were prepared using N-methyl-N-(2-hydroxyethyl)aniline as the coupling component. All the dyes were applied as disperse dyes on nylon fabric. These dyes have been found to give a wide range of colour shades with very good depth, brightness and levelness on nylon fabric. The visible absorption spectra, elemental analysis and Rf values were investigated. The percentage dye bath exhaustion on fabric was found to be very good. The dyed fabric showed very good to excellent fastness to light, washing, rubbing and perspiration. The sublimation fastness was found to be excellent.

scholarly journals Microwave assisted synthesis of some azo disperse dyes part 2: Eco-friendly dyeing of polyester fabrics by using microwave irradiation

2021 ◽  
Vol 12 (1) ◽  
pp. 64-68
Author(s):  
Mohamed Osman Saleh ◽  
Morsy Ahmed El-Apasery ◽  
Abdelhaleem Mostafa Hussein ◽  
Abu-Bakr Abdelhady El-Adasy ◽  
Magda Mohamed Kamel
Keyword(s):  
Microwave Irradiation ◽  
Disperse Dyes ◽  
Microwave Assisted Synthesis ◽  
Color Intensity ◽  
Light Fastness ◽  
Polyester Fabrics ◽  
Dye Absorption ◽  
Azo Disperse Dyes ◽  
Dyed Fabric ◽  
Green Technique

This study aimed to use microwave irradiation as a green technique, not only to enhance the dyeing efficiency of disperse-colored polyester fabrics, but also to conserve resources and minimize the environmental effects. Arylazopyrazolopyrimidinones dyes 1-9 were applied to polyester fabrics at 2% shade using conventional method and microwave at 100 °C. Both the color intensity expressed as dye absorption and the fastness characteristics of the dyed fabric were investigated. The K/S values are increased by increasing the time of irradiation from 10-60 minutes. The dyed substrate displayed good light fastness, and very good fastness levels to rubbing, perspiration washing, and sublimation, respectively.

SYNTHESIS, CHARACTERIZATION AND DYEING PERFORMANCE OF MONO AZO DISPERSE DYES BASED ON 2-AMINO 5-(4'-NITRO PHENYL) 1,3,4-THIADIAZOLE MOIETY

2021 ◽  
pp. 54-57
Author(s):  
Navinkumar A. Kucha ◽  
Manishkumar J. Tank ◽  
G. M. Malik
Keyword(s):  
High Pressure ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
H Nmr ◽  
Pressure Method ◽  
Dyeing Performance ◽  
Uv Visible ◽  
Azo Disperse Dyes ◽  
High Temperature High Pressure

In this paper synthesis of some new mono azo disperse dyes based on 2-amino 5-(4'-nitro phenyl) 1,3,4-thiadiazole moiety has been reported. Preparation of mono azo disperse dyes via condensation and nally diazotization of substituted primary amine and condensed with N-(4-(4'-chlorophenyl)thiazol-2-yl)-2-((5-(4'-nitrophenyl)-1,3,4-thiadiazol-2-yl)amino)acetamide (RR) to 1 give a series of mono azo dyes (RR -RR ). All the dyes were characterized by IR, H NMR, UV-Visible and elemental analysis and their dyeing 1 15 performance evaluated using High Temperature High Pressure method (HTHP) at 130°C on polyester fabric. All dyes gave good to excellent fastness properties.

scholarly journals The synthesis and application of 3-arylazo-4-phenylthieno[2, 3-c]isothiazole and ethyl 3-arylazo-4-phenylthieno[2, 3-c]isothiazole- 5-carboxylate

2005 ◽  
Vol 70 (6) ◽  
pp. 799-805 ◽  
Author(s):  
G.G. Pawar ◽  
P. Bineesh ◽  
P.S.R. Kumar ◽  
D.W. Rangnekar ◽  
V.R. Kanetkar
Keyword(s):  
Absorption Spectroscopy ◽  
Azo Dyes ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Azo Disperse Dyes ◽  
Visible Absorption Spectroscopy

The paper describes the synthesis of 3-amino-4-phenylthieno_2,3-c_isothiazole and ethyl 3-amino-4-phenylthieno_2,3-c_isothiazole-5-carboxylate and their utilization to prepare a range of azo disperse dyes. These novel aryl azo dyes were studied with respect to their color and constitution relationship. The application of these dyes on a polyester fabric and their fastness properties were evaluated. These dyes were characterized by NMR, IR and visible absorption spectroscopy.

scholarly journals Synthesis and Characterization of Novel Azo Disperse Dyes Containing -amino Phosphonate and Their Dyeing Performance on Polyester Fabric

2017 ◽  
Vol 60 (Conference Issue) ◽  
pp. 4-8
Author(s):  
Mohamed A. Hamed ◽  
Elkhabiry Shaban ◽  
Hany Kafafy ◽  
Ahmed Abdel Aleem El Gokha ◽  
Ibrahim El Sayed
Keyword(s):  
Polyester Fabric ◽  
Synthesis And Characterization ◽  
Disperse Dyes ◽  
Dyeing Performance ◽  
Amino Phosphonate ◽  
Azo Disperse Dyes

New class of magenta dyestuffs based on azomethine pyrazolone disperse dyes: Synthesis, characterization, and dyeing performance on polyester fabrics with ultraviolet protection and pH-dependent properties

2021 ◽  
pp. 004051752110246
Author(s):  
Seham A Ibrahim ◽  
Hala F Rizk
Keyword(s):  
Disperse Dyes ◽  
Light Fastness ◽  
Protection Factor ◽  
Polyester Fabrics ◽  
Color Representation ◽  
Ultraviolet Protection Factor ◽  
Dyeing Performance ◽  
Colorimetric Data ◽  
Ultraviolet Protection ◽  
Dyed Fabrics

Eight azomethine pyrazolone magenta dyes with iminodiethanol groups have been synthesized from 1,3-disubstituted- 1H-pyrazol-5( 4H)-ones in good yield. The newly synthesized dyes were characterized using spectroscopic data and elemental analyses techniques. All dyes have been successfully applied to polyester fabrics as disperse dyes where their dyeing performances have been discussed and evaluated in detail. The shades of these dyes ranged from red violet, purple and dark purple colors with good depth, brightness and good leveling properties. Multifunctional properties such as color representation, colorimetric data (L*, a*, b*, C*, h*, K/S), fastness properties of the dyed samples with respect to washing, perspiration, rubbing and light fastness have been discussed and evaluated in detail. The degree of exhaustion and fixation was also achieved after establishing the optimal dyeing conditions at 130°C, high pressure, 2% shade, and pH ≈5. As well, the influence of the dye bath pH on the K/S percentage and color intensity was estimated and discussed. Furthermore, the dyed fabrics were tested for ultraviolet protection factor and the results showed that these dyes gave excellent ultraviolet protection.

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