Method for cation modification and salt-free dyeing of cellulose fabric through one bath

A cellulose fiber and salt-free dyeing technology, which is applied in dyeing, fiber treatment, plant fiber, etc., can solve the problems of poor production environment, large amount of modifier, and deterioration of production environment, and achieve low cost and effective utilization The effect of high efficiency and less process

Inactive Publication Date: 2017-05-10
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many procedures are troublesome to operate. The modification temperature is usually above 60°C, resulting in large hydrolysis of the modifier and low effective utilization rate. The small molecule modifier will release irritating gas during modification and

Method used

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  • Method for cation modification and salt-free dyeing of cellulose fabric through one bath

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Cationic modification and salt-free dyeing of rayon twill, the specific steps are:

[0020] (1) Preparation of modified dyeing solution: dissolve sodium hydroxide and dye in soft water respectively, then mix the two uniformly, then add 3-chloro-2-hydroxypropyltrimethylammonium chloride to it and mix uniformly. The modified dyeing solution was prepared. The dye formulation is: reactive deep red RF-DA: 5.5g / L, reactive navy blue RF-BF: 36.7g / L, reactive brilliant blue KN-R: 13.3g / L, sodium hydroxide concentration of 16g / L, 3- The concentration of chloro-2-hydroxypropyltrimethylammonium chloride is 60g / L;

[0021] (2) Modification and salt-free dyeing of rayon twill: the rayon fabric is modified and dyed by the one-dip and one-pad process, the padding solution is the modified dyeing solution prepared in step (1), padding at room temperature, padding The rate is 60%, wrapped with plastic film after padding, and placed at room temperature for 18 hours.

[0022]...

Example Embodiment

[0023] Example 2

[0024] Cationic modification and salt-free dyeing of cotton poplin, the specific steps are as follows

[0025] (1) Preparation of modified dyeing solution: dissolve sodium hydroxide and dye in soft water respectively, then mix the two evenly, then add 2,3-epoxypropyltrimethylammonium chloride and mix evenly, dye The prescription is: Reactive Yellow HF-4GL 150%: 7.7g / L, Reactive Turquoise Blue FG 150%: 31.7g / L, Reactive Blue FN-R: 1.8g / L, Sodium Hydroxide Concentration: 9g / L, 2. The concentration of 3-epoxypropyltrimethylammonium chloride is 40g / L.

[0026] (2) Modification and salt-free dyeing of cotton poplin: the cotton poplin is modified and dyed by the one-dip and one-pad process, and the padding solution is the modified dyeing solution prepared in step (1). The rate is 75%, wrapped with plastic film after padding, and placed at room temperature for 17 hours.

[0027] (3) Washing: Wash the modified and dyed cloth in step (2) at room temperature, acid wash at r...

Example Embodiment

[0028] Example 3

[0029] Cationic modification and salt-free dyeing of cotton / modal fabric

[0030] Preparation of modified dyeing solution: dissolve sodium hydroxide and dye in soft water, then mix them evenly, then add 2,3-epoxypropyltrimethylammonium chloride and 3-chloro-2-hydroxyl Propyl trimethyl ammonium chloride and mix uniformly. The dye formulation is: Reactive Yellow HF-4GL 150%: 2.4g / L, Reactive Turquoise Blue FG 150%: 15.5g / L, Reactive Navy Blue 2GN: 5.4g / L . The concentration of sodium hydroxide is 7g / L, the concentration of 2,3-epoxypropyltrimethylammonium chloride is 6g / L, and the concentration of 3-chloro-2-hydroxypropyltrimethylammonium chloride is 24g / L.

[0031] (2) Cotton / Modal fabric modification and salt-free dyeing: the cotton / Modal fabric is modified and dyed by the one-dip and one-pad process, and the padding solution is the modified dyeing solution prepared in step (1), padding at room temperature, The rolling retention rate is 90%. After padding, it is...

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Abstract

The invention discloses a method for cation modification and salt-free dyeing of a cellulose fabric through one bath. The method comprises the following steps: (1) preparation of a modified dyeing liquid, including uniformly dissolving a reactive dye and sodium hydroxide in soft water, uniformly mixing the reactive dye and sodium hydroxide, adding a modifier in the obtained mixture, and performing uniform mixing to obtain the modified dyeing liquid; and (2) modification dyeing of a fabric, including performing dip padding treatment of a cellulose fabric with the modified dyeing liquid prepared in the step (1), winding the fabric into a roll after one dip and one padding, covering the roll with a film, putting the obtained roll at the room temperature, and performing room-temperature washing, acid washing, soaping, hot water washing, room-temperature washing and drying to the obtained fabric to obtain the salt-free dyed fabric. Cation modification and salt-free dyeing are carried out in one bath. The method is less in process, simple in technology and easy to operate. Acid washing and multiple water washing before dyeing in a two-bath method is not required, so that the method is less in water consumption and the process is easy to control. Modification and dyeing are carried out at the room temperature, and hydrolysis of the modifier and dye is reduced.

Description

technical field [0001] The invention belongs to the field of salt-free dyeing of cellulose fiber fabrics, in particular to a method for cationic modification of cellulose fiber fabrics and salt-free dyeing of reactive dyes in the same bath. Background technique [0002] Reactive dyes have the characteristics of complete chromatograms and bright colors. Through chemical reactions between their active groups and hydroxyl groups on cellulose, they are combined with fabrics through chemical bonds. They have good color fastness and are the main dyes for cellulose fiber fabrics. However, in the dyeing solution, reactive dyes are anionic, and the hydroxyl anions on the cellulose fibers repel each other. In order to solve this problem, a large amount of inorganic salt (yuanming powder or table salt) needs to be added in the dyeing solution. The treatment of the inorganic salt in the dyeing residue is difficult, and discharge into rivers will cause serious environmental problems. Ca...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P3/66D06M13/463D06L1/16D06M101/06
CPCD06L1/16D06M13/463D06M2101/06D06P1/38D06P3/66
Inventor 刘维锦林峰李冬梅冯富添冯永和丁红平莫春光魏贤峰
Owner SOUTH CHINA UNIV OF TECH
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