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High-concentration composite reactive dye

A reactive dye and high-concentration technology, applied in the field of black or brown composite dyes, can solve the problem of low color fixation rate of black reactive dyes, and achieve excellent dyeing performance, high color fixation rate, level dyeing and good lifting power

Inactive Publication Date: 2008-02-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-concentration composite reactive dye to solve the problem of low fixation rate of existing black reactive dyes, especially suitable for small liquor ratio dyeing and low-temperature alkaline pad dyeing

Method used

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  • High-concentration composite reactive dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mix 36.2 parts of 4-(β-hydroxyethylsulfone sulfate)-aniline with 350 parts of water and beat for ~60min, add 46 parts of 30% sodium nitrite solution dropwise from the liquid surface at 0~5°C, at this temperature Stir until the diazotization reaches the end point.

[0038] Add the aqueous solution containing 29.6 parts of compound (3) to the above-mentioned diazonium salt, perform a coupling at ~5°C, and keep the pH at 4~5°C; Maintain at 8-10°C. When the reaction reaches the end point, raise the temperature to 40°C, add 5 parts of activated carbon, stir for 12-20 minutes, filter, and directly spray-dry the dye solution to obtain the dye (101) with the following structural formula:

[0039]

[0040] Dye dyed cotton fiber is yellow, and the fastness is good.

Embodiment 2～15

[0042] The yellow-orange dye listed in Table 1 can be obtained with reference to the method of Example 1.

[0043] Table 1

[0044]

[0045]

[0046]

[0047]

Embodiment 16

[0049] Mix 32 parts of 3-amino-N-[4-(β-hydroxyethylsulfone sulfate)-phenyl]benzamide with 350 parts of water for beating for ~60 minutes, and slowly add 30% of 46 parts of sodium nitrite solution, stirred at this temperature until the diazotization reached the end.

[0050] Add an aqueous solution containing 18.8 parts of 2,4-diaminobenzenesulfonic acid to the above-mentioned diazonium salt, perform a coupling at ~5°C, and keep the pH at 3 to 4; after the reaction is completed, add 28.1 parts of 4-(β -Hydroxyethyl sulfone sulfate)-diazonium salt prepared from aniline for secondary coupling, adjust the pH to 6-6.5 with sodium bicarbonate, and maintain the temperature at 8-10°C. When the reaction reaches the end point, raise the temperature to 40°C, add 5 parts of activated carbon, stir for 12-20 minutes, filter, and directly spray-dry the dye solution to obtain the dye (201) with the following structural formula:

[0051]

[0052] Dye dyed cellulose fiber is brownish yellow, ...

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PUM

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Abstract

A high-concentration composite reactive dye belongs to the fine chemical field, relating to the preparing method of the high-concentration composite reactive dye. The invention is characterized in that: the invention discloses a high-concentration composite reactive dye, which comprises any type or more types of compound formula (I), any type or more types of compound formula (II), any type or more types of compound formula (III) and any type or more types of compound formula (IV); according to the percentage by weight, I to II to III is equal to (5-55) to (20-85) to (0-25), and (I plus II plus III) to IV is equal to (100-50) to (0-50). The invention has the beneficial effects that: remixed black and brown dyes possess high exhaust dyeing rate and color fixing rate and excellent level dyeing property, build-up property and repeatability, thereby the dye is particularly suitable to be used in short liquor ratio dyeing of cellulose fiber and polyamide fiber.

Description

technical field [0001] The invention relates to composite reactive dyes, especially black or brown composite dyes, which are suitable for exhaust and pad dyeing of cellulose fibers and polyamide fibers. Background technique [0002] Reactive dyes are one of the main dyes used for dyeing cellulose fibers. Among the current requirements for reactive dyes, dyeing depth is an extremely important indicator, especially when dyeing very dark colors, it is required that the dye has a good lifting power, and at the same time, the unfixed dye is easy to wash off. Black reactive dyestuff is the kind that application amount is bigger, although the relevant black compound reactive dyestuff structure that relevant patent (CN1858118A, CN1746231A) introduces all has jet blackness preferably, but deficiency is wherein adopts orange and dark blue dyestuff fixation rate Only ~60%, not only reduces economic benefits, but also causes environmental pollution due to dyeing residue. Contents of ...

Claims

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Application Information

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IPC IPC(8): C09B67/24D06P1/38D06P3/60D06P3/24
Inventor 吕荣文高崑玉
Owner DALIAN UNIV OF TECH
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