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Color-fixing assistant and color-fixing process for cotton-polyester blended fabric dyeing

A polyester-cotton blending and color-fixing auxiliary technology, applied in the field of textile processing, can solve the problem of washing fastness and dry and wet rubbing fastness, poor, difficult to achieve, single washing fastness or dry and wet rubbing fastness. To achieve the effect of improving dyeing uniformity, enhancing uniform adhesion and high degree of automation

Inactive Publication Date: 2018-01-19
马多浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reactive dyes and disperse dyes are often used for dyeing polyester-cotton blended fabrics, but the biggest weakness of reactive dyes is that the dyes are not fully utilized. Most reactive dyes are accompanied by hydrolysis reactions during the dyeing process. Hydrolyzed dyes will form floating colors on the surface of the fabric. As a result, fabrics dyed with reactive dyes, especially blended fabrics and dark fabrics, have poor wash fastness and dry and wet rubbing fastness, generally only 1-2 grades, and it is difficult to meet relevant international or national standards
[0003] At present, most of the finishing agents on the market are generally single finishing auxiliaries, which can only improve the fastness to washing or the fastness to dry and wet rubbing, and the finishing is carried out after the dyeing of the fabric, which does not meet the current national requirements. requirements for energy saving and emission reduction

Method used

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  • Color-fixing assistant and color-fixing process for cotton-polyester blended fabric dyeing
  • Color-fixing assistant and color-fixing process for cotton-polyester blended fabric dyeing
  • Color-fixing assistant and color-fixing process for cotton-polyester blended fabric dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of Color Fixing Auxiliary:

[0038](1) Add deionized water dropwise to 25g of food-grade polyglutamic acid under grinding until completely dissolved, and heat to reflux state and keep stirring for 10min, then add 5g of dipentaerythritol and 5g of polyethylene glycol 400, and continue in reflux state Insulate and stir for 3 hours, then add 3g of triglycidyl isocyanurate, and then keep stirring for 30 minutes in a reflux state. The resulting mixture is naturally cooled to room temperature, and finally sent to a freeze dryer. The modified polyglutamic acid is obtained;

[0039] (2) Add 2g of hydrogenated ricinoleic acid and 1g of diacetone acrylamide to 10g of Poloxamer 407, then heat to 120-125°C and mix for 1h, then transfer to 0-5°C and seal for 3h, the obtained The mixture was heated again to 120-125°C and kept mixed for 15 minutes to obtain the modified poloxamer;

[0040] (3) Add modified poloxamer and 3 g of ethoxylated trimethylolpropane triacrylate t...

Embodiment 2

[0045] Preparation of Color Fixing Auxiliary:

[0046] (1) Add deionized water dropwise to 35g of food-grade polyglutamic acid under grinding until completely dissolved, and heat to reflux state and keep stirring for 10min, then add 10g of dipentaerythritol and 10g of polyethylene glycol 400, and continue in reflux state Insulated and stirred for 3 hours, then added 5g of triglycidyl isocyanurate, again in a reflux state and insulated and stirred for 1 hour, the resulting mixture was naturally cooled to room temperature, and finally sent to a freeze dryer, and the resulting solid was dried and made into a micropowder through a superfine pulverizer. The modified polyglutamic acid is obtained;

[0047] (2) Add 1 g of hydrogenated ricinoleic acid and 0.5 g of diacetone acrylamide to 8 g of poloxamer 407, then heat to 120-125 ° C and mix for 1 h, and then transfer to a 0-5 ° C environment to seal and stand for 3 h, The resulting mixture was heated again to 120-125°C and mixed for...

Embodiment 3

[0053] Preparation of Color Fixing Auxiliary:

[0054] (1) Add deionized water dropwise to 25g of food-grade polyglutamic acid under grinding until completely dissolved, and heat to reflux state and keep stirring for 10min, then add 5g of dipentaerythritol and 5g of polyethylene glycol 400, and continue in reflux state Insulate and stir for 3 hours, then add 3g of triglycidyl isocyanurate, and then keep stirring for 30 minutes in a reflux state. The resulting mixture is naturally cooled to room temperature, and finally sent to a freeze dryer. The modified polyglutamic acid is obtained;

[0055] (2) Add 2g of hydrogenated ricinoleic acid and 1g of diacetone acrylamide to 10g of Poloxamer 407, then heat to 120-125°C and mix for 1h, then transfer to 0-5°C and seal for 3h, the obtained The mixture was heated again to 120-125°C and kept mixed for 15 minutes to obtain the modified poloxamer;

[0056] (3) Add modified poloxamer and 3 g of ethoxylated trimethylolpropane triacrylate ...

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Abstract

The invention discloses a color-fixing assistant and a color-fixing process for cotton-polyester blended fabric dyeing, and relates to the technical field of textile processing. The color-fixing assistant is prepared from the following raw materials in parts by weight: 25-35 parts of food-grade polyglutamic acid, 5-10 parts of dipentaerythritol, 5-10 parts of polyethylene glycol 400, 5-10 parts ofpoloxamer 407, 1-5 parts of ethoxylated trimethylolpropane triacrylate, 1-5 parts of triglycidyl isocyanurate, 0.5-3 parts of hydrogenated castor oil acid and 0.5-3 parts of diacetone acrylamide. Thecolor-fixing assistant prepared is combined with dye molecules adhered on fabric fibers to achieve the color fixing effect, so that dye take-up, dyeing uniformity and color fastness of the cotton-polyester blended fabric are improved; and after being used, the color-fixing assistant does not need to add other dying assistants except from the dye into a dyeing solution, so that treatment difficulty of dyeing wastewater is reduced while the cost is reduced.

Description

Technical field: [0001] The invention relates to the technical field of textile processing, in particular to a color-fixing auxiliary agent for dyeing polyester-cotton blended fabrics and a color-fixing process thereof. Background technique: [0002] Reactive dyes and disperse dyes are often used for dyeing polyester-cotton blended fabrics, but the biggest weakness of reactive dyes is that the dyes are not fully utilized. Most reactive dyes are accompanied by hydrolysis reactions during the dyeing process. Hydrolyzed dyes will form floating colors on the surface of the fabric. As a result, fabrics dyed with reactive dyes, especially blended fabrics and dark fabrics, have poor wash fastness and dry and wet rubbing fastness, generally only 1-2 grades, and it is difficult to reach relevant international or national standards. [0003] At present, most of the finishing agents on the market are generally single finishing auxiliaries, which can only improve the fastness to washing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P1/613D06P1/642D06P1/649D06P1/651D06P3/82D06P5/20D06B9/00D06B15/00
Inventor 马多浩
Owner 马多浩