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Method for dip-dyeing polyamide/cotton (viscose) fabrics with acid or neutral and reactive dyes in one-bath way

A technology of reactive dyes and dyeing methods, which is applied in the field of nylon-cotton (viscose) fabric dipping dyeing with acidic or neutral and reactive dyes in the same bath, can solve the problems of long process, affecting output and production cost, low production efficiency, etc., and achieve reduction Effects of rework, environmental protection, and reduction of alkali content

Inactive Publication Date: 2011-09-28
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when dyeing, the dyeing conditions of acidic or neutral and reactive dyes are very different. Generally, acidic or neutral dyes need to be dyed under acidic conditions, while reactive dyes need to be dyed under alkaline conditions. Therefore, two-bath dyeing is generally used. Its production efficiency is low and the process is too long, which affects the output and production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: Dyeing of light color (acid / reactive dyestuff consumption 0.1%):

[0059] (1) Dyeing formula:

[0060] Vinylsulfone structure (KN type) reactive dye dosage

[0061] (to fabric weight): 0.1 %

[0062] Acid dye dosage (weight to fabric): 0.1 %

[0063] Yuanming powder 30 g / L

[0064] Stabilizer HS-310B 1.0 g / L

[0065] Caustic soda (solid alkali) 0.8 g / L

[0066] Acid leveling agent HS-320 1.0 g / L

[0067] 98% acetic acid 3.0 g / L

[0068] Bath ratio 1:15

[0069] (2) Color fixing and soaping formula:

[0070] Color-fixing soaping agent HS-331 0.5 g / L

[0071] Bath ratio 1:20

[0072] (3) Dyeing and soaping process:

[0073] At room temperature, add water, run the fabric, add reactive and acid dyes, add sodium bicarbonate, stabilizer HS-310B and acid leveling agent HS-320, add enough water——20~30min to heat up to 60~65℃——keep warm Add 1 / 3 caustic soda for 20-30 minutes—keep warm for 5-10 minutes and then add 2 / 3 caustic soda—after heat-preserve fo...

Embodiment 2

[0076] Embodiment 2: Dyeing of medium color and luster (each 1.0% of acidic / reactive dyestuff consumption):

[0077] (1) Dyeing formula:

[0078] Amount of reactive dyes with double structure (B, M, BF type) of monochloro-s-triazine and vinyl sulfone

[0079] (weight to fabric): 1.0 %

[0080] Acid dye dosage (weight to fabric): 1.0 %

[0081] Salt 45g / L

[0082] Stabilizer HS-310 B 1.2 g / L

[0083] 30% liquid caustic soda 3.0 g / L

[0084] Acid leveling agent HS-320 0.8 g / L

[0085] 98% acetic acid 3.2 g / L

[0086] Bath ratio 1: 12

[0087] (2) Color fixing and soaping formula:

[0088] Color-fixing soaping agent HS-331 1.0 g / L

[0089] Bath ratio 1:20

[0090] (3) Dyeing and soaping process:

[0091] At room temperature, add water, run the fabric, add reactive and acid dyes, add salt, stabilizer HS-310B and acid leveling agent HS-320, add enough water——20~30min to heat up to 60~65℃—keep warm for 20~ Add 1 / 3 caustic soda for 30 minutes—keep warm for 5-10 minutes an...

Embodiment 3

[0094] Embodiment 3: dark color (neutral / reactive dyestuff consumption is about 2.5~3.0%) dyeing:

[0095] (1) Dyeing formula:

[0096] Vinylsulfone structure (KN type) reactive dye dosage

[0097] (weight to fabric): 2.5 %

[0098] Neutral dye content (weight to fabric): 3.0 %

[0099] Yuanming powder 60 g / L

[0100] Stabilizer HS-310 B 1.5g / L

[0101] Caustic soda (solid alkali) 1.1 g / L

[0102] Acid leveling agent HS-320 0.5 g / L

[0103] 98% acetic acid 3.4 g / L

[0104] Bath ratio 1:8

[0105] (2) Color fixing and soaping formula:

[0106] Color fixing soaping agent HS-331 1.5 g / L

[0107] Bath ratio 1:18

[0108] (3) Dyeing and soaping process:

[0109] At room temperature, add water, run the fabric, add reactive and neutral dyes, add sodium bicarbonate, stabilizer HS-310B and acid leveling agent HS-320, add enough water——20~30min to heat up to 60~65℃—— Keep warm for 20-30 minutes and add 1 / 3 caustic soda - keep warm for 5-10 minutes and then add 2 / 3 caustic so...

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Abstract

The invention discloses a method for dyeing polyamide / cotton (viscose) fabrics with acid (neutral) and reactive dyes in a one-bath way. The method comprises the following steps of: adding alkali in reactive dyes till pH value is 11-11.5 and dyeing cotton fibers with the reactive dyes at the low temperature of 60-65 DEG C or two temperature ranges of 60-65 DEG C and 80-85 DEG C; and then adding acid until the pH value is 5-6, and raising the temperature to 95-98 DEG C and dyeing the polyamide fibers with the acid (neutral) dyes; and meanwhile, fixing the colour of the acid (neutral) dyes in the reactive dye soaping process. According to the invention, as the one-bath two-step dyeing technology is used for replacing the traditional two-bath process, the dyeing time is shortened, the yield is increased and the consumption of energy and water and the alkali usage are reduced, thus lowering the production cost and protecting the environment; when the acid (neutral) dyes are used for dyeing, the dye liquid is a buffer system formed by sodium acetate and acetic acid and can improve the dye reproducibility (dyeing right first time) and reduce rehandling. The method has very obvious practical value.

Description

technical field [0001] The invention relates to a nylon-cotton (viscose) fabric dyeing method, in particular to a nylon-cotton (viscose) fabric dipping dyeing method in the same bath with acidic or neutral and reactive dyes. Background technique [0002] Nylon / cotton (sticky) fabric is a very popular fabric at present. Cotton and viscose fibers are soft to the touch, comfortable to wear, have good moisture absorption and air permeability, but are easy to wrinkle; nylon fibers have good elasticity, high strength, light weight and wear resistance, and good hygroscopicity. At the same time, it has both the advantages of the two fibers, but they are not complementary. It not only has a strong body, but also has a smooth and plump feel. After dyeing and finishing, the fabric is endowed with casual comfort and excellent wearing performance, which is deeply loved by consumers. . However, because brocade and cotton have different internal molecular structures, their dyeing propert...

Claims

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Application Information

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IPC IPC(8): D06P1/673D06P1/39D06P1/00D06P1/44D06P5/02D06P1/38D06P3/87
Inventor 王光明陈权胜张晓亮赵敏希祖菊青王超群徐文涛
Owner ZHEJIANG SCI-TECH UNIV
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