Disperse dye composition as well as preparation method and application thereof

A technology of disperse dyes and compositions, applied in dyeing methods, organic dyes, textiles and papermaking, etc., can solve the problems of inability to remove polyester fiber oligomers, unsuitable for strong alkaline conditions, and high processing water consumption, and achieve sublimation fastness. Excellent temperature, good temperature dependence, and the effect of reducing water consumption

Inactive Publication Date: 2015-12-30
WUXI CHANGAN SHUGUANG GLOVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The processing process is long, the processing water consumption is high, and the pollution discharge is large;
[0005] (2) The oligomers (i.e., low-polymerized polyester) inside the polyester fiber cannot be removed, which not only affects the feel of the product, but also easily forms "tar spots" on the surface of the fabric
When the diazo component of monoazo type blue disperse dye is thiazole and benzoisothiazole structure, as C.I. disperse blue 102, its alkali resistance is better, is suitable for using under alkaline condition; And prior art Azo-type heterocyclic blue disperse dyes contain -C in the structure 3 h 6 OC 2 h 4 CN~-C 4 h 8 OC 2 h 4 CN or -C 2 h 4 OCH 3 ~-C 3 h 6 OCH 3 , although it has a certain alkali resistance, but when the alkali is strong, it is also prone to alkali hydrolysis, so it is not suitable for use under strong alkaline conditions
[0017] At present, existing researchers have provided alkali-resistant azo dyes, such as CN101597432A discloses a monoazo heterocyclic blue alkali-resistant disperse dye compound, but the azo dyes are resistant to washing, friction, light and sublimation. Fastness still needs to be further improved

Method used

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  • Disperse dye composition as well as preparation method and application thereof
  • Disperse dye composition as well as preparation method and application thereof
  • Disperse dye composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Add 100g of 98% concentrated sulfuric acid into a 500ml flask, control the temperature at 20°C, slowly add 0.128mol of 3-amino-5-nitrobenzoisothiazole, raise the temperature to 50°C and keep it for 60 minutes, then cool down to 5°C ~10°C, slowly add 0.128mol of nitrosyl sulfuric acid, keep the temperature at 5°C for 3 hours to obtain the diazo component. In another 2000ml flask, add 500ml of water, 10g of 2.5% sulfuric acid, a small amount of auxiliary agent and 0.128mol of N-ethyl-N-propylcyanide-m-methylaniline to obtain a coupling component. Add an appropriate amount of ice to the coupling component and lower it to 0°C, then add the diazo component, control the reaction at 0°C to 5°C until the diazo component disappears, and obtain component A.

[0062] Add 55 milliliters of sulfuric acid in the three-necked flask, dropwise add 13 grams (100%) of nitrosyl sulfuric acid, add 2-bromo-3-chloro-4,6-dinitroaniline 29.65 grams at room temperature, stir and react for 4 hour...

Embodiment 2

[0065] Take 80% of the component A obtained in Example 1, 20% of the component B obtained in Example 1, filter, wash with water, dry, and sand-mill together with the diffusing agent to obtain the disperse dye.

Embodiment 3

[0067] Take 60% of the component A obtained in Example 1, and 40% of the component B obtained in Example 1, filter, wash with water, dry, and sand with a dispersing agent to obtain a disperse dye.

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Abstract

The invention provides disperse dye composition as well as a preparation method and an application thereof. The disperse dye composition comprises one or more than two components A represented in the general structural formula (I) shown in the specification and one or more than two components B represented in the general structural formula (II) shown in the specification, wherein in the formula (I), R1 is H, -CH3, -C2H5, -C2H4CN, -C3H6CN or -C4H8CN; R2 is -C2H4CN, -C3H6CN or -C4H8CN; R3 is H, -CH3 or -C2H5; in the formula (II), R1 is H or -OCH3; R2 and R3 are -CH2COOCH3, CH2COOC2H5, CH(CH3)COOCH3 or CH(CH3)COOC2H5 mutually independently or simultaneously; R4 is NHCOCH3. Dye required industrially and prepared from the dye composition and auxiliaries has excellent alkali resistance, washability, rub resistance, light fastness and sublimation fastness and is easy to dye, and the dying time is shortened obviously.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a disperse dye composition, its preparation method and application. Background technique [0002] General azo-type blue disperse dyes are not resistant to strong alkalis, that is, they are unstable under strong alkali conditions (such as pH 10-11), and are prone to discoloration. Therefore, azo-type disperse dyes are not suitable for strong alkaline dyeing of polyester fibers. [0003] At present, the dyestuffs for polyester fiber dyeing and processing all use disperse dyes, and are dyed under weak acidic (pH value 4.5-5.5) conditions. The main disadvantages of polyester fabric dyeing under weak acid conditions are: [0004] (1) The processing process is long, the processing water consumption is high, and the pollution discharge is large; [0005] (2) The oligomers (i.e., low-polymerized polyester) inside the polyester fiber cannot be removed, which not only affects t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/38D06P3/54D06P1/18
Inventor 缪建良
Owner WUXI CHANGAN SHUGUANG GLOVE FACTORY
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