Novel dyes and intermediates for synthetic-polymer fibres: Synthesis and dyeing performance of 1-aryl-5-hetarylphenylazo-4-hydroxypyrazole derivatives and their isomeric 1-hetarylphenyl-5-arylazo analogues as disperse dyes for polyester fibre

2007 ◽  
Vol 58 (1) ◽  
pp. 9-17
Author(s):  
M. A. Hanna
Keyword(s):  
Polyester Fibre ◽  
Synthetic Polymer ◽  
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

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 Synthesis of some New Disperse Dyes for Dyeing Polyester Fibre.(Dept.T)

1987 ◽  
Vol 12 (1) ◽  
pp. 109-118
Author(s):  
A. El-Hossini ◽  
M. Ali ◽  
H. Hasan
Keyword(s):  
Polyester Fibre ◽  
Disperse Dyes

The Dyeing Properties on Polyester Fibre Blends of Monoazo Reactive Disperse Dyes Containing a Vinylsulphonyl Group

2008 ◽  
Vol 94 (2) ◽  
pp. 53-55 ◽  
Author(s):  
K. NISHIDA ◽  
T. ISHII ◽  
T. MORIMOTO ◽  
T. HOTSUTA ◽  
H. IWAMOTO ◽  
...  
Keyword(s):  
Polyester Fibre ◽  
Disperse Dyes ◽  
Dyeing Properties

ChemInform Abstract: Synthesis of Disperse Dyes and Their Application on Polyester Fibre

ChemInform ◽  
2010 ◽  
Vol 27 (21) ◽  
pp. no-no
Author(s):  
K. R. DESAI ◽  
B. R. MODI ◽  
B. D. MISTRY
Keyword(s):  
Polyester Fibre ◽  
Disperse Dyes
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