Dyeing performance of disperse dyes based on 2-aminothiazole for cellulose triacetate and nylon fibers

2002 ◽  
Vol 3 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Hari Raghav Maradiya ◽  
Vithal Soma Patel
Keyword(s):  
Cellulose Triacetate ◽  
Disperse Dyes ◽  
Dyeing Performance

Energy Level and Chemical Class of Disperse Dyes—Plausible Characteristics of Level Dyeing Performance

2021 ◽  
Vol 8 (4) ◽  
pp. 15-19
Author(s):  
Salima Sultana Shimo ◽  
Md. Zulhash Uddin
Keyword(s):  
Energy Level ◽  
Low Energy ◽  
Disperse Dyes ◽  
Disperse Dye ◽  
Migration Process ◽  
Migration Index ◽  
Dyeing Performance ◽  
Fabric Surface ◽  
Chemical Class

The level dyeing index (LDI) is a measure of dye performance influenced by the dye migration process, ensuring the maximum uniformity of dye redistribution onto the fabric surface. The current study evaluates the level dyeing performance on polyester according to the energy level (low and high) and chemical classes (azo and anthraquinone based) of the three disperse dyes studied. The best levelness was obtained using C.I. Disperse Red 73 (an azo-based, low-energy level disperse dye), which exhibited the highest migration index (MI%) value. LDI results were obtained from the ratio of the exhaustion at the critical dyeing temperature (ECDT% and the final exhaustion Ef%), and the migration index (MI%). Each dye's LDI can be used to determine the compatibility of disperse dyes for combination dyeing.

Synthesis of azo disperse dyes containing pyridine ring for dyeing polyester and polyacrylic fibres

2016 ◽  
Vol 45 (1) ◽  
pp. 10-17 ◽  
Author(s):  
A.A. Fadda ◽  
N.S. Abbas
Keyword(s):  
Pyridine Ring ◽  
Cycloaddition Reaction ◽  
Disperse Dyes ◽  
Ethyl Vinyl Ether ◽  
Spectroscopic Techniques ◽  
Ethyl Vinyl ◽  
Content Type ◽  
Dyeing Performance ◽  
Azo Disperse Dyes ◽  
Derivatives Of

Purpose – The purpose of this paper is to discuss the synthesis of new azo disperse dyes containing pyridine ring for dyeing acetate polyester and other fibres. Design/methodology/approach – Cycloaddition reaction of 3-formylchromone (Compound 1) with ethyl vinyl ether (Compound 2) afforded 3-ethoxy-4,4a-dihyro-3H,10H-pyrano[4,3-b]chromen-10-one (Compound 3). Reaction of 3 with aqueous ammonium sulphite in ethanol furnishes 3-(2-hydroxybenzoyl)pyridine (Compound 5). Compound 5 was fully characterised by spectroscopic techniques. Ten arylazo derivatives of Compound 6 have been prepared for use as dyestuffs. The effect of the nature and orientation of substituents in the diazonium component on the colour of azo dyes is discussed. Dyeing performance of the dyes on different fibres has also been assessed. Findings – Most of the dyes showed good affinity to polyester fibres. On the other hand, polyacrylic fibres were only stained to weak shades. Originality/value – No details regarding the synthesis and dyeing performance of such dyes are reported before in the literature.

scholarly journals Synthesis, characterization and dyeing performance of new bisazo–bisazomethine disperse dyes

2013 ◽  
Vol 17 (2) ◽  
pp. 203-209 ◽  
Author(s):  
Dinesh M. Patel ◽  
Tarosh S. Patel ◽  
Bharat C. Dixit
Keyword(s):  
Disperse Dyes ◽  
Dyeing Performance

Biological decolorization of industrial dyes by Candida tropicalis and Bacillus firmus

2011 ◽  
Vol 63 (4) ◽  
pp. 761-768 ◽  
Author(s):  
Sucharita Arora ◽  
Harvinder Singh Saini ◽  
Kamaljit Singh
Keyword(s):  
Candida Tropicalis ◽  
Bacterial Culture ◽  
Cellulose Triacetate ◽  
Domestic Sewage ◽  
Soil Samples ◽  
Environmental Concerns ◽  
Disperse Dyes ◽  
Yeast Culture ◽  
Bacillus Firmus ◽  
Textile Industries

Disperse dyes are chiefly used by textile industries for the coloration of polyester and cellulose triacetate and their blended fibres. Their extensive use and recalcitrant nature, high tinctorial strength renders the voluminous textile effluents intensively colored and causes environmental concerns. Decolorization of representative members of Dianix CC and Dianix S brands (DyStar Pvt. Ltd.) of disperse dyes were tested with Candida tropicalis and Bacillus firmus isolated respectively from contaminated soil samples and sludge of a domestic sewage drain. While both the cultures efficiently remove color from the aqueous solutions of the dyes, the yeast culture was found to decolorize most of the tested disperse dyes through biotransformation, the bacterial culture showed color removal mainly by adsorption on the cell pellets. Formation of cleavage products such as p-nitroaniline was observed in the case of Dianix Orange E-3R, indicating reductive cleavage of the azo linkage of the dye.

Study of the Pretreatment and Disperse Dyeing Process for the PLA/cotton Blended Fabric: High Physical Resistance and Dyeing Performance

2012 ◽  
Vol 627 ◽  
pp. 233-238 ◽  
Author(s):  
Hao Fei Huang ◽  
Yuan Yuan Qu ◽  
Zhong Jun Fu ◽  
Yun Fei Sun
Keyword(s):  
Disperse Dyes ◽  
The Novel ◽  
Tear Strength ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Dyeing Parameters ◽  
Decrement Rate ◽  
Bending Length ◽  
Physical Resistance

In this paper, the optimal pretreatment and disperse dyeing process for the novel PLA/cotton blended fabric was studied. In the pretreatment stage, enzyme and H2O2 were applied to test their effect on the decrement-rate and bending length. After pretreatment, the PLA component of this fabric was dyed with three different disperse dyes and the effect of dyeing parameters including time, temperature and pH on the K/S value and tear strength were studied. Besides, DSC and SEM were also applied to analyze this pretreatment and dyeing process. The recommended pretreatment and disperse dyeing conditions were summarized.

scholarly journals Dyeing of hydrophobic fabrics with disperse dyes

2001 ◽  
Vol 66 (6) ◽  
pp. 367-376 ◽  
Author(s):  
Hari Maradiya ◽  
Vithal Patel
Keyword(s):  
Absorption Spectroscopy ◽  
Elemental Analysis ◽  
Cellulose Triacetate ◽  
Spectral Studies ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Dyed Fabrics ◽  
Yellowish Orange ◽  
Visible Absorption Spectroscopy

A series of disperse dyes has been synthesized by diazotisation of 2,6-dibromo-4-nitroaniline and coupled with various N-arylmaleimides. The dyes were characterized by IR spectral studies, visible absorption spectroscopy and elemental analysis. All the dyes were applied as disperse dyes on nylon, cellulose triacetate and polyester fabrics. These dyeswere found to give yellowish orange to deep brown shades with very good depth, levelness and brightness on different fabrics. The percentage dye bath exhaustion and fixation on fabrics were found to be very good. The light, washing, rubbing, perspiration and sublimation fastness properties of the dyed fabrics were found to be good to excellent.

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.

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