Design, synthesis of novel bisazo disperse dyes: Structure analysis and dyeing performance on PET

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.

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Design, Synthesis, Crystal Structure Analysis, and Insecticidal Evaluation of Phenylazoneonicotinoids

Journal of Agricultural and Food Chemistry ◽

10.1021/jf2029708 ◽

2011 ◽

Vol 59 (19) ◽

pp. 10615-10623 ◽

Cited By ~ 13

Author(s):

Zhenjun Ye ◽

Shuang Xia ◽

Xusheng Shao ◽

Jiagao Cheng ◽

Xiaoyong Xu ◽

...

Keyword(s):

Crystal Structure ◽

Structure Analysis ◽

Crystal Structure Analysis ◽

Design Synthesis

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

Pigment & Resin Technology ◽

10.1108/prt-01-2015-0011 ◽

2016 ◽

Vol 45 (1) ◽

pp. 10-17 ◽

Cited By ~ 8

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.

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

Journal of Saudi Chemical Society ◽

10.1016/j.jscs.2011.03.009 ◽

2013 ◽

Vol 17 (2) ◽

pp. 203-209 ◽

Cited By ~ 3

Author(s):

Dinesh M. Patel ◽

Tarosh S. Patel ◽

Bharat C. Dixit

Keyword(s):

Disperse Dyes ◽

Dyeing Performance

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.627.233 ◽

2012 ◽

Vol 627 ◽

pp. 233-238 ◽

Cited By ~ 1

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.

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