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Composite ester-removing reactive black dye as well as preparation method and application thereof

A compound degreasing and reactive black technology, which is applied in dyeing, organic dyes, textiles and papermaking, etc. It can solve the problems of poor dyeing and printing effects, insufficient blackness, low utilization rate, etc., and achieve excellent color fixing ability , excellent dyeing depth and high reproducibility

Active Publication Date: 2018-06-12
TAIXING JINYUN DYESTUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its utilization rate is low in application, and after dyeing and printing fiber materials, the blackness is not full enough, especially for wool, brocade, cotton and other fiber materials. Require

Method used

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  • Composite ester-removing reactive black dye as well as preparation method and application thereof
  • Composite ester-removing reactive black dye as well as preparation method and application thereof
  • Composite ester-removing reactive black dye as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 (Partial Deesterification of Dye Compound of Formula (1))

[0023] Adjust the pH to 7.0 with 100g of the compound solution of the dye structure of formula (1) (concentration 250g / L) with 7.5g of the prepared soda ash solution (concentration 200g / L), heat up to 35℃, keep warm and keep the pH value to react 90 Min, stop adjusting the alkali, and continue the heat preservation reaction for 90 minutes. When the pH value stabilizes at 6.7±0.05 and reaches the end of the reaction, a composite deesterified reactive black dye solution containing 24 g of formula (1) and 1.6 g of formula (2) is obtained. After drying, the composite deesterified reactive black dye 1 of the present invention is obtained.

Embodiment 2

[0024] Example 2 (Partial Deesterification of Dye Compound of Formula (1))

[0025] Adjust the pH to 8.5 with 100g of the compound solution of the dye structure of formula (1) (concentration 250g / L) with 15g of prepared soda ash solution (concentration 200g / L), heat up to 35℃, keep warm and keep the pH value for 90 minutes , Stop adjusting the alkali, continue the temperature keeping reaction for 90 minutes, wait until the pH value stabilizes at 7.0±0.05, and reach the end of the reaction, to obtain a composite deesterified reactive black dye solution containing 21 g of formula (1) and 5.2 g of formula (2). After drying, the composite deesterified reactive black dye 2 of the present invention is obtained.

Embodiment 3

[0026] Example 3 (Mechanical blending of dye compounds of formula (1) and formula (2)):

[0027] 20 parts of the dye compound of formula (2) and 80 parts of the dye compound of formula (1) are fully mechanically mixed to obtain the composite deesterified reactive black dye 3 of the present invention.

[0028] Dyeing instructions:

[0029] Take 1g of the dye prepared according to the above-mentioned Examples 1 to 3 and C.I. Reactive Black 5, first use an appropriate amount of water to make it fully dissolved, and then dilute to a 250mL volumetric flask. Mix 50mL dye solution with 50mL water, then add 5g cotton cloth (wool, brocade) and 6g sodium sulfate, then increase to 60℃ at 1℃ / min, keep for 30 minutes, add 2g sodium carbonate, and keep 60℃ Dye for 30 minutes, then take out the dyed cotton cloth (wool, brocade), boil and soap with non-ionic detergent for 15 minutes, then wash with water and dry at about 70°C.

[0030] The sample performance test method of the embodiment implements ...

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PUM

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Abstract

The invention provides a composite ester-removing reactive black dye which is characterized by comprising at least two dye compounds in formula (1) or (2) as shown in the specification. The compositeester-removing reactive black dye is mainly prepared from C.I. reactive black 5 through partially degreasing or prepared via compounding 80-95 parts of a dye compound as shown in the formula (1) and 5-20 parts of a dye compound as shown in the formula (2), has relatively high reactivity, good fixation rate, excellent dyeing depth performance and relatively high pitch-black degree, and is suitablefor dyeing and printing of fiber of fur, brocade, cotton and the like.

Description

Technical field [0001] The invention belongs to the field of fine chemicals, and specifically relates to a composite reactive dye, in particular to a composite deesterified reactive black dye and its application in dyeing and printing of wool, nylon and cotton fibers. Background technique [0002] In recent years, the demand for reactive dyes in my country has continued to increase, and the output has increased year by year, and the requirements for its application performance have become higher and higher. C.I. Reactive Black 5 is a double-reactive azo dye with large production volume and wide application, but its application properties such as directness, stability, and promotion need to be improved. In application, its utilization rate is low. After dyeing and printing fiber materials, the blackness is not full enough. Especially for fiber materials such as wool, nylon, cotton and other fiber materials, the dyeing and printing effect is not good, and it cannot reach the higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/24D06P1/384D06P3/66
CPCC09B67/0059C09B67/0072D06P1/384D06P3/666
Inventor 赵卫国王兵苏金奇鞠苏华张卫平周沈勇陈昊
Owner TAIXING JINYUN DYESTUFF
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