Synthesis of pyrazolone based heterocylic bisazo acid dyes and their dyeing performance on silk and wool fibers

2021 ◽  
Author(s):  
Khushbu B. Desai ◽  
Paresh S. Patel ◽  
Keshav C. Patel
Keyword(s):  
Acid Dyes ◽  
Dyeing Performance ◽  
Wool Fibers

scholarly journals Synthesis and Application of Acid Dyes Based on 3-(4-Aminophenyl)-5-benzylidene-2-substituted phenyl-3, 5-dihydroimidazol-4-one

2008 ◽  
Vol 5 (s1) ◽  
pp. S987-S996
Author(s):  
Devang N. Wadia ◽  
Pravin M. Patel
Keyword(s):  
Wool Fabric ◽  
Spectroscopic Methods ◽  
Fastness Properties ◽  
Acid Dyes ◽  
Light Fastness ◽  
Dyeing Performance ◽  
Wool Fibers ◽  
Total Fixation ◽  
Decreasing Ph

A series of eight novel heterocyclic based monoazo acid dyes were synthesized using various substituted imidazol-4-one as diazo component and coupled with various amino-napthol sulphonic acids. The resultant dyes were characterized using standard spectroscopic methods and then dyeing performance on wool fabric was assessed. Final results concluded that exhaustion (%E) of the dyes on wool fibers increased with decreasing pH of application and that fixation (%F) of the dyes on wool fibers increased with increasing pH of application and the highest total fixation efficiency was achieved at pH 5. Wash and light fastness properties of prepared dyes showed encouraging results.

Large Unilamellar Vesicle Liposomes for Wool Dyeing: Stability of Dye-Liposome Systems and Their Application on Untreated Wool

1992 ◽  
Vol 62 (7) ◽  
pp. 406-413 ◽  
Author(s):  
A. de la Maza ◽  
J. L. Parra ◽  
P. Bosch ◽  
L. Coderch
Keyword(s):  
Dye Adsorption ◽  
Acid Dyes ◽  
Large Unilamellar Vesicle ◽  
Dyeing Process ◽  
Wool Fibers ◽  
Physicochemical Stability ◽  
The Mean ◽  
Wool Dyeing ◽  
Hydrolysis Of ◽  
Acid Blue

Studies are described involving the use of large unilamellar liposomes (LUV) as carriers of dyes to untreated wool. To this end, we investigated liposomes made with egg phosphatidylcholine and containing the commercial acid dyes Polar red B (Ciba-Geigy), CI acid red 249, or Polar blue 6B, CI acid blue 83. We first studied the physicochemical stability of liposomes by measuring the mean particle size distribution of phospholipid vesicles after preparation and during the dyeing process, and we also investigated the possible hydrolysis of phospholipid molecules, studying the alteration of fatty acids built up on the liposomic structures. We then investigated the kinetic aspects of dye adsorption and bonding on untreated wool samples by means of LUV liposomes at different lipid concentrations. This process leads to an inhibition of dye exhaustion in untreated wool fibers, improving the bonding of these acid dyes to the keratinic structure.

Effect of acid pretreatment on the dyeing performance of walnut (Juglans regia) leaves on wool fibers

2015 ◽  
Vol 16 (8) ◽  
pp. 1657-1662 ◽  
Author(s):  
Ferda Eser ◽  
Semra Sanal ◽  
Cengiz Temiz ◽  
Fikret Yilmaz ◽  
Adem Onal
Keyword(s):  
Juglans Regia ◽  
Acid Pretreatment ◽  
Dyeing Performance ◽  
Wool Fibers

scholarly journals Studies on Synthesis and Dyeing Preformance of Acid Dyes Based on 4,7-Dihydroxy-3,8-di-α-naphthylazo-1,10-phenanthroline-2,9-Dione

2007 ◽  
Vol 4 (4) ◽  
pp. 559-562 ◽  
Author(s):  
B. V. Patel ◽  
P. H. Dasondi
Keyword(s):  
Anthranilic Acid ◽  
Viscose Rayon ◽  
Sulphonic Acid ◽  
Acid Dyes ◽  
Sulphanilic Acid ◽  
Dyeing Performance ◽  
Cotton Fibres ◽  
Metanilic Acid

Some new azo acid dyes were prepared by coupling various diazotized acid components such as anthranilic acid, sulphanilic acid, laurentacid, peri acid, tobias acid, H-acid, J-acid, gamma acid, sulphotobias acid,4-aminotoluiene-3-sulphonic acid, 5-sulpho- anthranilic acid, 2-naphthylamine-3,6,8-trisulphonic acid, bronner acid, metanilic acid and cleve acid with 4,7-dihydroxy-3,8-di-α-naphthylazo-1,10-phenanthroline-2,9-dione. The dyes were characterized by elemental, IR and TLC analyses. Their dyeing performance as acid dyes has been assessed on viscose rayon, wool and cotton fibres.

Synthesis, Characterization, and Dyeing Performance of UV Protective Mono Azo Acid Dyes Based on 4-Hydroxybenzophenone

2020 ◽  
Vol 7 (2) ◽  
pp. 19-26
Author(s):  
Smita Bait ◽  
Suvidha Shinde ◽  
Ravindra Adivarekar ◽  
Sekar Nagaiyan Nethi
Keyword(s):  
Diazonium Salt ◽  
Acid Dyes ◽  
Light Fastness ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Dyeing Performance ◽  
Uv Absorbers ◽  
Functional Dyes ◽  
Silk Fabrics ◽  
Dyed Fabric

A key element in reducing human UV exposure is making proper UV protective goods with good ultraviolet protection factor (UPF) protection. The current research is focused on the synthesis of UV-protective functional dyes containing benzophenone-based UV absorbers and its application on wool and silk fabrics. Novel mono azo acid dyes were synthesized by the coupling of diazonium salt solutions of different aromatic amines with 4-hydroxybenzophenone, and these were applied on wool and silk. The fabrics dyed with the synthesized dyes showed less than 5% UVA and UVB transmission, indicating good protection against UV radiation. Dyed fabric also gave good to excellent washing, rubbing, and light fastness, and UV protection properties, even after ten washing cycles.

scholarly journals Studies on Synthesis and Dyeing Preformance of Acid Dyes Based on 4,7-Dihydroxy-1,10-Phenanthroline-2,9-Dione

2008 ◽  
Vol 5 (s1) ◽  
pp. 1033-1036
Author(s):  
B. V. Patel ◽  
P. H. Dasondi
Keyword(s):  
Anthranilic Acid ◽  
Viscose Rayon ◽  
Sulphonic Acid ◽  
Acid Dyes ◽  
Sulphanilic Acid ◽  
Dyeing Performance ◽  
Cotton Fibres ◽  
Metanilic Acid

Some new azo acid dyes were prepared by coupling various diazotized acid components such as anthranilic acid, sulphanilic acid, laurent acid, peri acid, tobias acid, H-acid, J-acid, gamma acid, sulphotobias acid, 4-aminotoluiene-3-sulphonic acid, 5-sulpho- anthranilic acid, 2-naphthylamine-3,6,8-trisulphonic acid, bronner acid, metanilic acid and cleve acid with 4,7-dihydroxy-1,10-phenanthroline-2,9-dione. The dyes were characterized by elemental, IR and TLC analyses. Their dyeing performance as acid dyes has been assessed on viscose rayon, wool and cotton fibres.

Union Dyeing of Wool/Silk Blends at Low Temperature

2011 ◽  
Vol 332-334 ◽  
pp. 1382-1385 ◽  
Author(s):  
Lei Zhu ◽  
Jun Li Chen ◽  
Qiu Bao Zhou ◽  
Jin Huan Zheng ◽  
Wei Guo Chen
Keyword(s):  
Low Temperature ◽  
Smooth Surface ◽  
Weak Acid ◽  
The Other ◽  
Acid Dyes ◽  
The Past ◽  
Protein Fibers ◽  
Wool Fibers ◽  
Temperature Ranges ◽  
Selection Of

Protein fibers are attractive topics in the past decades. Among them, silk and wool fibers are very popular due to their luster, smooth surface and comfort. In order to reach union dyeing of silk/wool blends, chlorination pretreatment or introduction of low-temperature dyeing auxiliary for wool are selected and compared. The results showed that chlorination pretreated wool/silk dyed with weak acid dyes, can reach union dyeing under 80 oC, possibly under 70 oC. On the other hand, introduction of low-temperature dyeing auxiliary can slightly improve the union dyeing at different temperature ranges according to selection of weak acid dyes.

Antibacterial activity of chemically versus enzymatic functionalized wool with ɛ-poly-L-lysine

2016 ◽  
Vol 87 (13) ◽  
pp. 1604-1619 ◽  
Author(s):  
Maja Kaisersberger-Vincek ◽  
Janez Štrancar ◽  
Vanja Kokol
Keyword(s):  
Antibacterial Activity ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Bactericidal Effect ◽  
Ionic Surfactant ◽  
Resonance Spectroscopy ◽  
Acid Dyes ◽  
Paramagnetic Resonance ◽  
E Coli ◽  
Wool Fibers ◽  
Grafting From

The effect of the coupling approach (chemical by using carbodiimide chemistry and grafting-to versus grafting-from synthesis routes, and enzymatic by using transglutaminase) of ɛ-poly-L-lysine (ɛPL) graft yield with wool fibers was studied and evaluated related to their antibacterial activity against gram-negative Escherichia coli and gram-positive Staphylococcus aureus bacteria, after 1–24 h of exposure. While the ɛPL applied was evaluated colorimetrically by wool staining with two acid dyes and quantitatively by evaluation of the basic groups using potentiometric titration, its orientation was determined by Fourier transform infrared spectroscopy and, for the first time, by Electron Paramagnetic Resonance spectroscopy using spin-labeled ɛPL. The highest (∼99% for E. coli versus ∼92% for S. aureus) and kinetically the fastest (in 3 h) antibacterial activity with ∼83% for E. coli versus ∼64% for S. aureus bactericidal effect was determined for the wool functionalized by the chemical grafting-to approach. Such an effect may be related to both quantitatively the highest (∼62 gɛPL/kgwool) grafting yield of ɛPL and conformationally its highly flexible “brush-like” structure. Comparably, the enzymatic coupling (∼50 gɛPL/kgwool) giving ∼95% and ∼8% reductions of E. coli and S. aureus, respectively, being additionally reduced to ∼74% and ∼78% by using the grafting-from approach (∼34 gɛPL/kgwool), was identified as the less bactericidally effective (∼63% versus ∼58%). It was also shown that a non-ionic surfactant being used in the durability testing of functionalized wool to washing adheres strongly onto the fibers, thus blocking the amino groups of ɛPL, and, as such, decreases the antibacterial efficiency of the wool, being unaffected in the case when the washing was carried out without surfactant.

Environmentally Friendly Multifunctional Treatments of Textiles with Photo-Active Colorants

2012 ◽  
Vol 441 ◽  
pp. 780-780
Author(s):  
Ning Liu ◽  
Gang Sun
Keyword(s):  
Thermal Properties ◽  
Light Exposure ◽  
Environmentally Friendly ◽  
Cotton Fabrics ◽  
Fluorescent Light ◽  
Oxidation Reactions ◽  
Acid Dyes ◽  
Chemical Structures ◽  
Wool Fibers ◽  
Dyed Fabrics

As an effort to develop environmentally friendly light-induced functional treatments for fabrics, certain acid dyes were incorporated onto different fabrics. The treated fabrics demonstrated powerful and durable antimicrobial and oxidative detoxifying functions after light exposure. In this presentation, we will report the latest progresses in using certain anthraquinone compounds in treatments of wool, nylon, silk and cotton fabrics. The dyed fabrics could demonstrate antimicrobial functions upon exposed to UVA (365 nm) and fluorescent light. However, it was more interesting to observe that the surfaces of the dyed wool fibers became polished with scales removed after being exposed to UV or day light for certain time. The chemical structures and thermal properties of the dyed fabrics were investigated by using different instrumentation such as SEM, FTIR, and other instruments, and the results verified the proposed oxidation reactions of the fibers. This research proves that dyeing fabrics with photo-active dyes could be a new green functional treatment on textiles.

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