A process for dyeing cotton with direct dyes possessing primary aromatic amino groups furnishing wash fastness exhibited by reactive dyes

2021 ◽  
Author(s):  
Pratik Hande ◽  
Kedar S. Kulkarni ◽  
Ravindra V. Adivarekar ◽  
Sunil S. Bhagwat ◽  
Prakash M. Bhate
Keyword(s):  
Reactive Dyes ◽  
Amino Groups ◽  
Direct Dyes ◽  
Wash Fastness

The Adsorption Character of Kapok Fiber and Reactive Dyeing Technology on Modified Kapok Fiber

2014 ◽  
Vol 9 (3) ◽  
pp. 155892501400900 ◽  
Author(s):  
Ying Ding ◽  
Zaisheng Cai ◽  
Liming Wang ◽  
Yong Shen ◽  
Qunyan Gao
Keyword(s):  
Reactive Dyes ◽  
Reactive Dye ◽  
Dye Uptake ◽  
Direct Dyes ◽  
Kapok Fiber ◽  
Reactive Dyeing ◽  
Wash Fastness ◽  
Fixation Ratio

The adsorption character of kapok fiber with direct dyes and the dyeing technology of cationic modified kapok fiber with reactive dyes were studied in this article. The results indicate that the optimal dyeing technique parameters for the cationic modified kapok fiber with the reactive dye Cibacron FN-R include 0.5~1% (o.w.f) of dyes, 15~20g·L-1 of NaCl, and 2g·L-1 of JFC with bath ratio of 1:50 at a dyeing temperature of 40°C for 30min. The dyed kapok fiber was fixed with 15~20g·L-1 of Na2CO3 for 60min. As a result, the dye-uptake, fixation ratio, wash fastness, friction fastness, and K/S of cationic modified kapok fabric were enhanced by above technique.

scholarly journals Kinetics of Reactive Dyed Pretreated Cotton Fabrics with and without using Salt

2019 ◽  
Vol 8 (4) ◽  
pp. 9723-9726
Keyword(s):  
Waste Water ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Cross Linking ◽  
Dye Uptake ◽  
Effluent Water ◽  
Particle Movement ◽  
Wash Fastness ◽  
Kinetics Of

Most of the cotton fabrics at present are dyeing using reactive dyes which requires large quantities of salt, further produce large amount of effluent load to the environment in the form of more salinity in the effluent water along with other pollutants. In order to reduce the salinity in the waste water lot of investigations were carried out. Cotton fabrics pretreated with chitosan were dyed with reactive dyes. Pretreated samples were dyed without using salt as an electrpolyte. The influence of pretreatment on kinetics in dye bath i.e rate of dye particle movement towards the fabric, wash fastness, rubbing fastness was determined. The results of this study shows that the pretreatment of cotton with chitosan increases dye uptake and shows good fastness to washing and rubbing same as that of conventional way of dyed samples. It was determined that chitosan was effective cross linking agent in salt-free dyeing of cotton fabrics.

Nano-Silica Based Sol-Gel Coating of Direct Dyed Cotton Fabric to Improve the Colorfastness Properties

2012 ◽  
Vol 538-541 ◽  
pp. 2251-2255
Author(s):  
Sidra Saleemi ◽  
Nadir Ali Rind
Keyword(s):  
Cotton Fabric ◽  
Sol Gel ◽  
Nano Silica ◽  
Direct Dyes ◽  
Light Fastness ◽  
Copper Salts ◽  
Washing Fastness ◽  
Wash Fastness ◽  
Direct Dye

This research was aimed to achieve the better washing fastness of direct dyes using sol-gel after treatment. Early work indicates that the after treatments used to improve the wash fastness were affect the hue, rubbing and light fastness of direct dye and were environmentally hazardous because of containing formaldehyde and copper salts. The present process consists of simple pad-dry-cure method which is optimized. The prime focus of using sol-gel after-treatment is to make better wash fastness without affecting the properties discussed above. A series of nanosols were prepared from the selected silane derivatives, which were then applied on dyed cotton samples. Different tests were conducted on coated samples and compared to control. This method shows tremendous effect of increasing the washing fastness of direct dyes on cotton without essential loss of properties, such as hue, rubbing, light fastness and handle of the fabric.

A study of heterobifunctional reactive dyes on nylon fibers: dyeing properties, dye moiety analysis and wash fastness

2005 ◽  
Vol 66 (3) ◽  
pp. 231-239 ◽  
Author(s):  
Y SON ◽  
J HONG ◽  
H LIM ◽  
T KIM
Keyword(s):  
Reactive Dyes ◽  
Dyeing Properties ◽  
Wash Fastness

ChemInform Abstract: Disazo Direct Dyes Containing Cyclic Amido, Keto, and Amino Groups.

ChemInform ◽  
2010 ◽  
Vol 22 (10) ◽  
pp. no-no
Author(s):  
J. SZADOWSKI
Keyword(s):  
Amino Groups ◽  
Direct Dyes

Enhancing the wash fastness of dyeings by a sol-gel process. Part 1; Direct dyes on cotton

2003 ◽  
Vol 119 (5) ◽  
pp. 297-300 ◽  
Author(s):  
Luo Min ◽  
Zhang Xiaoli ◽  
Chen Shuilin
Keyword(s):  
Sol Gel ◽  
Direct Dyes ◽  
Wash Fastness ◽  
Sol Gel Process

Removal of reactive dyes from wastewater by acrylate polymer beads bearing amino groups: isotherm and kinetic studies

2013 ◽  
Vol 129 (2) ◽  
pp. 114-124 ◽  
Author(s):  
Gulay Bayramoglu ◽  
Mehmet Yakup Arica
Keyword(s):  
Reactive Dyes ◽  
Kinetic Studies ◽  
Amino Groups ◽  
Polymer Beads ◽  
Acrylate Polymer

Alkaline Hydrolysis of Chloro-N-heterocyclic Reactive Dyes containing Ionisable Amino Groups-II

2008 ◽  
Vol 81 (11) ◽  
pp. 477-481 ◽  
Author(s):  
J. R. ASPLAND ◽  
A. JOHNSON
Keyword(s):  
Alkaline Hydrolysis ◽  
Reactive Dyes ◽  
Amino Groups ◽  
Hydrolysis Of
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