Pure cotton active salt-free dyeing solution, pure cotton fabric dyed with it and process

Abstract

The invention belongs to the technical field of textile finishing processing, and specifically relates to a pure cotton active salt-free dyeing solution, a dyed pure cotton shell fabric using the purecotton active salt-free dyeing solution and a technology. The pure cotton active salt-free dyeing solution comprises the following components in concentrations: 0.5 to 80 g / L of active dye, an alkaline agent whose using amount is 55% to 65% of that of the active dye and is not lower than 9 g / L, NaOH whose using amount is 2.5% to 3.5% of that of the active dye and is not lower than 0.6 g / L, and the balance is water; the active dye is one or more of active yellow O, active red R and active blue B; the alkaline agent is SFA-01. The dyeing solution has good permeability for the pure cotton shellfabric, and can be used for dyeing under the condition without salt acceleration; the dyed pure cotton shell fabric is stable in quality, excellent in color fastness, colorful and plump in yarn-dyed weaving and excellent in comprehensive performance; according to the technology dyed by using the dyeing solution, surface dyeing can be removed effectively, the color fastness and washing fastness ofthe shell fabric are promoted, the COD value of wastewater discharge is reduced, and the technology is environmentally friendly and good in economic benefit.

Description

technical field [0001] The invention belongs to the technical field of textile finishing and processing, and in particular relates to a pure cotton active salt-free dyeing solution, pure cotton fabrics dyed by the same and a process. Background technique [0002] More than 80% of cellulose textiles are dyed with reactive dyes. The amount of salt used in the dyeing process is high, high energy and water consumption, poor product quality stability, low added value, low production efficiency, and a large amount of difficult-to-treat high-salt wastewater. Not only seriously pollute the water body, make the land salinized, but also have low desalination regeneration rate and high cost. These problems seriously hinder the further development of textiles, so it is particularly important to invent new reactive salt-free dyeing technology in the dyeing and finishing production process, and realize green dyeing and finishing to prevent pollution from the source. Contents of the inve...

AI Technical Summary

Problems solved by technology

[0002] More than 80% of cellulose textiles are dyed with reactive dyes. The amount of salt used in the dyeing process is high, high energy and water consumption, poor product quality stability, low added value, low production efficiency, and a large amount of difficult-to-treat high-salt wastewater.

Not only seriously pollute the water body, make the land salinized, but also have low desalination regeneration rate and high cost