Reactive black dye composition and dye product

A technology of dye composition and reactive black, which is applied in organic dyes, dyeing methods, textiles and papermaking, and can solve the problems of poor dyeing depth, affecting the wet fastness of dyed fabrics, and poor dyeing performance.

Active Publication Date: 2016-05-04
SHANGHAI KEHUA DYESTUFF IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today, C.I. reactive black 5 accounts for a large proportion in the black color spectrum, but it has disadvantages such as low affinity to fibers, low color fixation rate, and unsatisfactory blackness. Therefore, to obtain a good black reactive dye, it must be compounded with multi-component dyes Made
[0003] However, the existing reactive black dye color matching products still have problems such as weak dyeing depth and low color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1195678A, CN103194091A, CN1858118A, 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 ease of cleaning 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 and dye product
  • Reactive black dye composition and dye product
  • Reactive black dye composition and dye product

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0065] 1. Weigh 14.6g (0.02mol) of sulfonated para-ester with a content of 53%, add water and beat for 0.5h, slowly add 5.06g of 30% sodium nitrite solution dropwise under the conditions of pH 0.8-1.4 and temperature 14-17°C (0.022mol) carry out diazonium reaction, every 0.5h judges whether sodium nitrate is excessive, reacts for 2h, the reaction terminal control amino reagent does not show yellow;

[0066] 2. Weigh 4.6g (0.02mol) of metaurea with a content of 65%, slowly add it to the above-mentioned diazo component, adjust the pH to 4.5-5.0, perform coupling reaction at 10-15°C for 2 hours, and measure the purity of the liquid phase Reaching 80% is the end of the reaction;

[0067] 3. Adjust the pH of the above coupling solution to 6.5-6.7, add 5.06g (0.022mol) of 30% sodium nitrite solution and stir evenly, and slowly add it dropwise to 5.9g (0.05mol) of 31% glacial hydrochloric acid within 40-60min. And keep stirring and reacting for 3 hours, and judge whether the sodium ...

Embodiment 23

[0083] 85 parts of the dyestuff of formula (Ⅰ-3), 15 parts of the dyestuff of formula (II-1) and 20 parts of sodium sulfate are mechanically mixed, and the composite dye dyed cotton that obtains is black (M 1~ M 2 Both are H, that is, the dye compound is expressed in the form of free acid).

[0084]

Embodiment 24

[0086] With 20 parts of dyes of formula (I-1), 45 parts of dyes of formula (I-3), 25 parts of dyes of formula (II-5), 10 parts of dyes of formula (III-1) and 30 parts of sodium sulfate Carry out mechanical mixing, the compound dyestuff dyeing cotton that obtains is black (M 1 ~ M 3 Both are H, that is, the dye compound is expressed in the form of free acid).

[0087]

[0088]

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PUM

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Abstract

The invention relates to a reactive black dye composition and a dye product. The reactive black dye composition includes, by weight, 45-95 parts of a component A, 5-55 parts of a component B and 0-40 parts of a component C, the component A is selected from at least one compound represented by formula (I), the component B is selected from at least one compound represented by formula (II), and the compound C is selected from at least one compound represented by formula (III) and / or formula (IV). The reactive black dye product includes the reactive black dye composition. The product has the advantages of good deep dyeing property, excellent lifting force, high color fixing rate, good compatibleness, excellent color fastness, realization of less dye dosage, easy water washing and clear raffinate in the printing and dyeing process, stable saline-alkaline resistance, stable dyeing performance, and suitableness for dip dyeing, pad dyeing, printing and other technologies.

Description

(1) Technical field [0001] The invention relates to a reactive black dye composition and dye products. (2) Background technology [0002] Black dyes have always been the color spectrum with the largest amount of dyes. In the dyeing and printing of cotton fabrics, the black color spectrum accounts for about 50% of the total color spectrum. dye products. Today, C.I. reactive black 5 accounts for a large proportion in the black color spectrum, but it has disadvantages such as low affinity to fibers, low color fixation rate, and unsatisfactory blackness. Therefore, to obtain a good black reactive dye, it must be compounded with multi-component dyes made. [0003] However, the existing reactive black dye color matching products still have problems such as weak dyeing depth and low color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1195678A, CN103194091A, CN1858118A, etc. This is due to the high concentration of dyes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/36C09B67/24D06P1/38D06P3/66
Inventor 王晓红王专周巧燕
Owner SHANGHAI KEHUA DYESTUFF IND
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