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Reactive black dye composition

A dye composition and the technology of the composition are applied in the directions of organic dyes, dyeing methods, textiles and paper making, etc., and can solve the problems of weak dye depth, difficult cleaning of dyed fabrics, insufficient blackness, etc.

Inactive Publication Date: 2015-04-15
ZHEJIANG KEYONG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are also defects such as poor lifting force and insufficient blackness, which limit its wide use.
[0003] The existing reactive black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN102245712A, CN1730566A, etc.
This is due to the high concentration of dyes used in deep-color dyeing, the amount of floating dyes increases, and the adsorption of dyes to fibers has a saturation value. Generally, the concentration of dyes should not exceed 10% of the saturation value of dyeing. Excessive dyes cannot be dyed and fixed. It will accumulate on the surface of the fabric. If the cleanability is not good, it will inevitably affect the wet fastness of the dyed fabric, resulting in poor dyeing performance.

Method used

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  • Reactive black dye composition
  • Reactive black dye composition
  • Reactive black dye composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Preparation of dye compounds of formula (IIa-1):

[0079] (1) Diazotization: Add 45.5g of sulfonated para-ester (ie 4-β-ethylsulfone sulfate aniline-2-sulfonic acid) to 150mL of water and stir evenly, add ice and cool to 2-5 ℃, add 7.0ml of 31% (w / w) hydrochloric acid, beat for 30-40 minutes, add 30.2g of 30% (w / w) sodium nitrite solution dropwise from the liquid surface at 2-5 ℃, and keep the temperature at 5 ~10°C, pH=1.0~1.3, stirring and reacting for 2~3 hours under the condition of color development of potassium iodide test paper, maintaining a slight excess of sodium nitrite during the dropwise addition and reaction, and eliminating the excess sodium nitrite with sulfamic acid to obtain 4-β-Ethylsulfone sulfate aniline-2-sulfonic acid diazo solution.

[0080] (2) Diazotization: add 35.5g of p-ester (i.e. p-(β-hydroxyethylsulfone sulfate) aniline) to 80mL of water and stir evenly, then add ice and cool to 2-5°C, and keep for 2-5 Slowly add 14ml of 31% hydrochlori...

Embodiment 2

[0085] Mechanically mix 59 parts of dyes of formula (Ia-3), 25 parts of dyes of formula (IIa-1), 16 parts of dyes of formula (Ⅲb-1) and 2.5 parts of sodium sulfate, and the obtained composite dyed cotton is deep black, where M 1 , M 2 , M 3 All are Na, that is, the dye compound is expressed in the form of sodium salt.

[0086]

[0087]

Embodiment 3～72

[0089] Mechanically mix the dyes listed in Table 1 (where M 1 ~ M 4 Both are Na, that is, the dye compounds are all in the form of sodium salts), dyed cotton is black.

[0090]

[0091]

[0092]

[0093]

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PUM

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Abstract

The present invention provides a reactive black dye composition, which mainly comprises 45-99 parts by mass of a component A and 1-55 parts by mass of a component B, wherein the component A is selected from one or a plurality of materials represented by formulas (Ia)-(Ib), and the component B is selected from one or a plurality of materials represented by formulas (IIa)-(IIc). According to the present invention, when the reactive black dye composition of the present invention is used for textile printing dyeing, advantages of good build-up property, high color fixation rate, high dye uptake, easy water washing, clear dyeing residue liquid, stable saline-alkaline tolerance, and excellent wet treatment fastness are provided, and the reactive black dye composition is a cheap and rare deep black dye. The formulas are defined in the instruction.

Description

(1) Technical field [0001] The invention relates to a reactive black dye composition, in particular to a reactive black dye composition with excellent lifting power, easy water washing and stable dyeing performance. (2) Background technology [0002] In cotton fiber dyeing, black accounts for almost 40-50%, and more direct dyes and sulfur dyes are banned and restricted due to environmental protection issues. Reactive black KN-B is used in a large amount because of its low price, good fastness, high color fixation rate and easy washing, and there is no environmental protection problem including AOX. But there are also defects such as poor lifting force and insufficient blackness, which limit its wide use. [0003] The existing reactive black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN102245712A, CN1730566A, etc. ...

Claims

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Application Information

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IPC IPC(8): C09B67/22C09B67/24D06P1/38D06P3/66
Inventor 欧其王晓红汪仁良
Owner ZHEJIANG KEYONG CHEM CO LTD
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