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Preparation method for navy blue or black disperse dye

A disperse dye, navy blue technology, applied in the field of preparation of navy blue or black disperse dyes, can solve the problems of lack of washing fastness and sublimation fastness, etc.

Active Publication Date: 2014-10-08
SHANGHAI ANOKY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For disperse dyes, products with conventional fastness requirements are still widely used in the market, such as disperse navy blue EXN-SF and disperse navy blue EXN-SF, which are generally composed of C.I. disperse blue 291:1, C.I. Black EXN-SF, these dyes are still lacking in washing fastness and sublimation fastness during printing and dyeing

Method used

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  • Preparation method for navy blue or black disperse dye
  • Preparation method for navy blue or black disperse dye
  • Preparation method for navy blue or black disperse dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] The former dye A1 shown in formula (I) gets 2 grams, A18 gets 8 grams, the former dye B1 shown in formula (II) gets 5 grams, B30 gets 7.5 grams, the former dye C6 shown in formula (III) gets 12.5 grams, the former dyestuff D3 shown in formula (IV) gets 15 grams, then adds 67 grams of dispersant MF, 8 grams of sodium lignin sulfonate, 153 grams of water and carries out dispersion treatment together with sand mill, then spray drying, to obtain final product Dye compositions of the invention.

Embodiment 2～27

[0096] According to the preparation method of Example 1, according to the data shown in Table 5, at least one dye A, at least one dye B, at least one dye C, at least one dye D and dispersant MF, sodium lignosulfonate Blending with water, sand milling to disperse, and spray drying to obtain finished disperse dyes. Among them, the structural formulas defined by the substituents of the dyes A, B, C, and D are shown in Tables 1 to 4.

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Embodiment 28

[0108] Take 2.5 grams of the disperse dyes prepared in Examples 1-27 and disperse them in 500 milliliters of water to form a dye suspension, draw 20 milliliters and mix them with 80 milliliters of water, adjust the pH of the dyeing bath to 4-5 with acetic acid, and heat up to 70 °C At the same time, put 5 grams of polyester fiber cloth for dyeing, heat up from 70°C to 130°C within 30 minutes, keep warm for 50 minutes, cool to below 90°C, drain and wash. Then put the cloth sample into 100 milliliters of reducing cleaning solution containing 1 gram per liter of caustic soda and 3 gram per liter of hydrosulfite to clean at 80° C. for 20 minutes. According to the national standard GB / T2397-2003, the lifting power of the disperse dyes prepared in Examples 1 to 27 was measured, and the national standard GB / T3921-2008, GB / T3920-2008, GB / T8427-2008, GB / T5718-1997 were used to test their resistance Washing, rubbing, light fastness and sublimation color fastness. The test results are s...

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Abstract

The invention discloses a preparation method for a navy blue or black disperse dye. The preparation method for the navy blue or black disperse dye includes: mixing one or more of dye A shown as formula (I), one or more of dye B shown as formula (II), one or more of dye C shown as formula (III) and one or more of dye D shown as formula (IV), then conducting grinding dispersing in an additive and water, and carrying out spray drying; or, subjecting the one or more of dye A shown as formula (I), one or more of dye B shown as formula (II), one or more of dye C shown as formula (III) and one or more of dye D shown as formula (IV) to grinding dispersing in the additive and water and spray drying respectively, then and performing mixing. The disperse dye prepared by the invention has the advantages of high dye-uptake, good deep dyeing property, excellent elevating power, excellent color fastness, and good level dyeing property. (formula (I), formula (II), formula (III), formula (IV)).

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a method for preparing navy blue or black disperse dyes. Background technique [0002] Monoazo-type disperse dyes occupy an important position in the dyeing and printing of hydrophobic fibers, especially polyester fiber products, because of their simple synthesis process, low price, complete chromatogram, good application and fastness performance, and are widely used. Disperse dyes. [0003] In recent years, with the enhancement of people's awareness of environmental protection and health, consumers have higher and higher requirements for the color fastness level and ecological performance of textiles. For disperse dyes, products with conventional fastness requirements are still widely used in the market, such as disperse navy blue EXN-SF and disperse navy blue EXN-SF, which are generally composed of C.I. disperse blue 291:1, C.I. Black EXN-SF, these dyes are still lacking in wash...

Claims

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Application Information

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IPC IPC(8): C09B67/38D06P1/18D06P3/54
Inventor 赵敏燕美芳韩伟鹏
Owner SHANGHAI ANOKY GRP
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