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Composite active black dye

A technology of reactive black and dyes, applied in organic dyes, dyeing methods, textiles and papermaking, etc., can solve the problems of not reaching the degree of deep black, easy precipitation, color flowers, etc., and achieve excellent fastness and color fastness The effect of good degree and high fixation rate

Inactive Publication Date: 2005-05-18
SHANGHAI KEHUA DYESTUFF IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Black dye has always been the color with the largest amount of reactive dyes. Among the reactive GR blacks currently on the market, the orange component and C.I. reactive black 5 are used to match the color. Reactive black dyes, but still have the following disadvantages: First, the blackness is still not ideal, and can not reach the level of deep black; second, there is a big difference between the two in terms of fiber directness and water solubility, especially in the dyeing process When adding alkali to fix the color, the orange component is easy to precipitate and cause stains; the affinity to fibers is also high, which is easy to cause color flowers; third, some fastness (such as water fastness, perspiration fastness, etc.) is not enough ideal

Method used

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  • Composite active black dye
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  • Composite active black dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0027] The structural formula of dye A is as follows:

[0028]

[0029] The structural formula of dye B is as follows:

[0030]

[0031] The structural formula of dye C is as follows:

[0032]

[0033] According to the measurement data shown in Table 1, dye A, dye B and dye C, filler sodium sulfate (industrial sodium sulfate), dispersant MF (methylnaphthalenesulfonic acid formaldehyde condensate), diffusing agent CNF (benzylnaphthalene Sulfonate formaldehyde condensate), diffusing agent NNO (naphthalenesulfonic acid formaldehyde condensate) blended, stirred evenly, and then spray-dried to obtain composite reactive black dye.

[0034]

Embodiment 9～17

[0036] According to the substituents and metering data shown in Table 2, dye A, dye B, dye C and auxiliary agent repeat the preparation steps described in Examples 1-8 to obtain composite reactive black dyes respectively.

[0037] raw material

Dye A

Dye B

Dye C

Yuan Ming

pink

(gram)

Dispersant

MF

(gram)

(gram)

substituent

(gram)

substituent

(gram)

substituent

R 1

R 2

R 3

R 4

R 5

R 6

R 7

R 8

X

M

Y

implement

Example 9

30

H

H

D

H

17

H

H

D

H

12

F

Na

Cl

10

0

implement

Example 10

34.5

H

H

E

H

24

M

D

H

H

18

F

Na

Cl

0

0

impleme...

Embodiment 18

[0042] Each get 1 gram of the composite reactive black dye that embodiment 1~17 makes is placed in the volumetric flask of 250ml and is mixed with uniform solution. Take 20ml and mix it with 120ml of distilled water in a dye vat, and add 50ml of 20% sodium sulfate solution to make a dye solution. Dip 2 grams of cotton cloth into the dye solution, heat it to 60°C under normal temperature and pressure, and absorb it for 30 minutes, then add 10ml of 20% sodium carbonate solution into the dye vat to fix the color of the cotton cloth. Fix the color in the sample machine for 45 minutes, take it out after dyeing, fully wash with water and wring dry, boil in soap solution containing 3 g / L of soap flakes for 15 minutes, wash and wring dry, dry at 60-70°C for sampling. Observe its color; adopt the methods determined in GB / T 3920-1997, GB / T 3922-1997 and GB / T 5713-1997 to test its color fastness to rubbing, color fastness to perspiration, and color fastness to water. The test results ar...

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Abstract

The composite active black dye includes dye A in 40-70 wt%, dye B in 15-35 wt% and dye C IN 8-30 wt%. The composite active black dye is especially suitable for dyeing fiber material containing hydroxyl radical or carboxyl radical, such as cellulose fiber, cotton fiber, synthetic fiber, etc. and is one kind of ecological active black dye with high color fastness, high blackness and other features.

Description

(1) Technical field [0001] The invention relates to a composite reactive black dye, in particular to a composite reactive black dye for cellulose fibers. (2) Background technology [0002] Black dye has always been the color with the largest amount of reactive dyes. Among the reactive GR blacks currently on the market, the orange component and C.I. reactive black 5 are used to match the color. Reactive black dyes, but still have the following disadvantages: First, the blackness is still not ideal, and can not reach the level of deep black; second, there is a big difference between the two in terms of fiber directness and water solubility, especially in the dyeing process When adding alkali to fix the color, the orange component is easy to precipitate and cause stains; the affinity to fibers is also high, which is easy to cause color flowers; third, some fastness (such as water fastness, perspiration fastness, etc.) is not enough ideal. Therefore, developing new reactive bl...

Claims

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Application Information

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IPC IPC(8): C09B67/24D06P1/38
Inventor 阮伟祥张云保汪仁良
Owner SHANGHAI KEHUA DYESTUFF IND
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