scholarly journals Diphenyl (4′-(Aryldiazenyl)biphenyl-4-ylamino)(pyridin-3-yl)methylphosphonates as Azo Disperse Dyes for Dyeing Polyester Fabrics

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Mohamed F. Abdel-Megeed ◽  
Mohamed M. Azaam ◽  
Gamal A. El-Hiti
Keyword(s):  
Azo Dyes ◽  
Titanium Tetrachloride ◽  
Diazonium Salt ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Polyester Fabrics ◽  
Amino Compounds ◽  
Azo Disperse Dyes

Diphenyl (4′-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate(1)was synthesized in 88% yield from reaction of pyridine-3-carboxaldehyde with benzidine and triphenylphosphite in the presence of titanium tetrachloride as a catalyst. Diazotization of1gave the corresponding diazonium salt2which was coupled with several hydroxyl or amino compounds to give the corresponding azo dyes3–8in 82–88% yields after crystallization. The dyes produced were applied to polyesters as disperse dyes and their fastness properties were elevated.

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.

Synthesis of novel biologically active thiazole dyes and their applications

2019 ◽  
Vol 48 (5) ◽  
pp. 375-382
Author(s):  
Sraa Abu-Melha
Keyword(s):  
Azo Dyes ◽  
Antioxidant Activities ◽  
Biologically Active ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Thiazole Derivatives ◽  
Polyester Fabrics ◽  
Content Type ◽  
Colour Strength ◽  
Textile Dyeing

Purpose This study aims to focus on the possibility of developing new thiazole azo dyes with good colouristic application properties, biological and pharmacological activities. Design/methodology/approach Coupling of curcumin with different aromatic diazonium salts of 2-amino thiazole derivatives, such as 2-aminobenzothiazole, 2-amino-5-phenylthiazole, 2-amino-5-methylthiazole and 2-amino-5-nitrothiazole-produced novel azo dyes. Structures of all synthesised dyes were fully confirmed via spectroscopic and analytical methods. Those compounds were examined for their antimicrobial, anticancer and antioxidant activities. They were applied on polyester fabrics and, subsequently, their dyeing properties, light, washing, perspiration, rubbing and sublimation fastness were determined. Findings Prepared dyestuffs were suitable for dyeing polyester fabrics. It was found that all prepared dyes possess high colour strength, as well as good overall fastness properties. Meanwhile, the synthesised compounds exhibited good biological and pharmacology activity. Research limitations/implications Synthesis of these four azo dyes for textile dyeing was not conveyed earlier. Practical implications Thaizolyl disperse dyes were responsible for giving better colour assessment and fastness properties on polyester fabrics. Social implications Although, most of synthesis eco-friendly dyes are expensive, they are showing a good antimicrobial and anticancer activity. Originality/value It gave straightforward approach to synthesise novel thiazolyl azo dyes with good biological, pharmacology activities, good colour assessment, and fastness properties.

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.

Synthesis of 4-hydroxy coumarin dyes and their applications

2016 ◽  
Vol 45 (5) ◽  
pp. 320-329 ◽  
Author(s):  
Hatem Gaffer ◽  
Mounir Salem ◽  
Magda Marzouk
Keyword(s):  
Azo Dyes ◽  
Antioxidant Activities ◽  
Fastness Properties ◽  
Transfer Printing ◽  
Polyester Fabrics ◽  
Content Type ◽  
Colour Strength ◽  
Textile Dyeing ◽  
Hydroxy Coumarin ◽  
Decisive Evidence

Purpose The present study aims to focus on the possibility of developing new eco-friendly azo dyes with good colouristic application properties, exhibiting biological and pharmacological activities. Design/methodology/approach Coupling of 4-hydroxycoumarin with a variety of aromatic diazonium salts of 2-aminothiazole, 2-aminobenzothiazole, 4-aminoantipyrine, 4-aminoacetophenone, adenine sulphate, a-naphthylamine and sulphadimidine to produce novel azo dyes. The compounds were fully characterised using spectroscopic and analytical methods. All of the compounds were tested for their antimicrobial, anticancer and antioxidant activities. The prepared dyestuffs were dyed on polyester fabrics and subsequently their dyeing properties, light, washing, perspiration, rubbing and sublimation fastness were determined. Findings The spectroscopic data of the synthesised compounds have provided decisive evidence that such compounds exist in the solid state as the azo-dike to form C and in solution in equilibrium tautomer forms A, B and D. The prepared dyestuffs are suitable for either heat transfer printing or traditional printing on polyester and nylon 6 fabrics. The prints obtained from the dyes possess high colour strength, as well as good overall fastness properties. Also the synthesised compounds exhibit good biological and pharmacology activity. Research limitations/implications Synthesis of these seven azo dyes for textile dyeing had never been reported previously. Practical implications The dyestuffs derived from 4-hydroxycoumarin are reasonable azo disperse dyestuffs giving good all round fastness properties on polyester fabrics. Social implications Production of less expensive and new eco-friendly dyes exhibit antimicrobial and anticancer activity. Originality/value It provided a potentially simple way to synthesize novel coumarin azo-dyes exhibit good biological and pharmacology activity and also exhibit good overall fastness properties.

scholarly journals Synthesis of some azo disperse dyes based on pyridone moiety and their application on polyester fabrics

2017 ◽  
Vol 60 (Conference Issue) ◽  
pp. 8-9 ◽  
Author(s):  
Morsy A. EL-Apasery ◽  
Salah Shakra ◽  
Dina Abbas ◽  
Hatem. E. Gaffer ◽  
Emad. A. Allam
Keyword(s):  
Disperse Dyes ◽  
Polyester Fabrics ◽  
Azo Disperse Dyes

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.

scholarly journals Synthesis of Disperse Dyes from Pyridone and Resorcinol Coupled to Diazotized 2-Amino-4-chloro-5-formylthiazole and Application to Polyester

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Yusuf Y. Lams ◽  
P. O. Nkeonye ◽  
K. A. Bello ◽  
M. K. Yakubu ◽  
A. O. Lawal
Keyword(s):  
Absorption Spectroscopy ◽  
Spectral Studies ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Polyester Fabrics ◽  
Wash Fastness ◽  
Dyed Fabrics ◽  
Visible Absorption Spectroscopy ◽  
C Nmr

The aim of this study was to synthesize disperse dyes in the derivative of 2-amino-4-chloro-5-formylthiazole by conventional diazotization and couplings with pyridone and resorcinol. The dyes were characterized by visible absorption spectroscopy, IR spectral studies, and 1H and 13C NMR. The pyridone and resorcinol substituted dyes exhausted well with good depth on 100% polyester fabrics with a shade of brown and purple colours, respectively. The heteroatom and the intrinsic conjugation in the thiazole structure results in high bathochromic shifts and lead to brightness of shades. The dyed fabrics showed very good to excellent wash fastness and moderate to good light and perspiration fastness properties.

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