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A light yellow disperse dye

A disperse dye, bright yellow technology, used in azo dyes, organic dyes, monoazo dyes, etc., can solve problems such as poor alkali resistance, poor oxidation resistance and stability

Inactive Publication Date: 2017-07-18
SHANGHAI ANOKY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a bright yellow disperse dye that can be dyed by alkali in order to overcome the defects of poor alkali resistance and oxidation stability of existing disperse dyes

Method used

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  • A light yellow disperse dye
  • A light yellow disperse dye
  • A light yellow disperse dye

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0122] Preparation of Compound A1: (1) Add 150 g of water and 13.7 g of N-(2,4-dinitro)phenyl-1,3-diaminobenzene into a 250 mL three-neck flask, stir evenly at room temperature for half an hour, then add mass The percentage concentration is 20 grams of hydrochloric acid of 36%, continue to stir for 1.5 hours, add ice and cool to 0-5 ℃, dropwise add 18.6 grams of sodium nitrite solution with a mass fraction of 20%, then continue to react at 0-5 ℃ for 3 hours, Add 0.5 g of sulfamic acid, and test colorless with starch potassium iodide test paper to obtain diazonium salt to be coupled.

[0123] (2) Add 200 grams of water, 7 grams of sodium hydroxide with a mass fraction of 30%, 8.7 grams of sodium carbonate, and 4.8 grams of phenol into a 1000mL beaker. After stirring for half an hour, keep at 0-10°C and add step (1) The obtained diazonium salt was reacted for 3 hours while keeping the pH value at 8-9, heated to 65-70° C. for 2 hours, and filtered to obtain 18 grams of intermedia...

Embodiment 1

[0134] 10 grams of former dyes shown in formula A1, 20 grams of former dyes shown in formula B4, 20 grams of former dyes shown in formula C3, dispersant MF60 grams, sodium lignosulfonate 15 grams, water 153 grams together sand Disperse in a mill, and then spray dry to obtain the light yellow dye mixture of the present invention.

Embodiment 2～30

[0136] According to the preparation method of Example 1, the compounds represented by formulas A, B, and C were ground, dispersed, and spray-dried according to the data shown in Table 1 below.

[0137] Table 1

[0138]

[0139]

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Abstract

The invention discloses bright yellow disperse dyes. The bright yellow disperse dye is a compound shown in formula B, wherein R3 is C1-C4 straight chain or branched chain alkyl, -OCH3 or -OC2H5, R4 and R5 are independently H, halogen or nitro, but not While being -H or nitro, R6 and R7 are independently methyl, ethyl, -C2H4CN, -C2H4OCH3, -C2H4OC2H5 or benzyl. The disperse dye of the present invention is bright yellow, can be used as a single color, and can also be used in combination with alkali-resistant disperse dyes of other colors. It has excellent alkali resistance and hydrogen peroxide oxidation stability, and this feature makes it not only Applied to general alkaline printing and dyeing of polyester fiber materials, it can also be applied to scouring dyeing one-bath process or bleaching one-bath process, as well as disperse reactive same-sizing printing process, and can meet environmental protection requirements.

Description

technical field [0001] The invention relates to a bright yellow disperse dye. Background technique [0002] Polyester fibers and their blended fabrics have important applications in current high-grade fabrics, and the applicable dyes are disperse dyes. When disperse dyes are used in the dyeing of polyester fiber products, acidic dyeing baths are generally used for dyeing, but acid dyeing is prone to disadvantages such as staining spots, color spots, and dyeing flowers caused by oligomer contamination. The basic dyeing process of disperse dyes can effectively remove the oligomers produced in the dyeing process, which is expected to shorten the production process, and has the characteristics of low consumption, high efficiency, energy saving and time saving. In recent years, the pressure of energy saving, emission reduction and cost has prompted printing and dyeing enterprises and dye auxiliaries manufacturers to work together to develop a variety of alkali-resistant disperse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/085C09B43/28D06P1/18D06P1/19D06P3/54
Inventor 赵敏燕美芳周洁
Owner SHANGHAI ANOKY GRP
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