Disperse dye, and preparation method and application thereof

A disperse dye and hydrogen-based technology, applied in dyeing methods, azo dyes, organic dyes, etc., can solve the problems of large specific surface area of ​​fine-denier polyester fibers, difficulty in obtaining high washing fastness, and reduced washing fastness, achieving improved Effects of soaping fastness, color fastness improvement and water solubility improvement

Inactive Publication Date: 2016-11-09
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large specific surface area of ​​fine denier polyester fibers and high dye concentration during dyeing, the problem of lower washing fastness after high temperature setting is more prominent.
Therefore, it is difficult to obtain high washing fastness for fine denier polyester / spandex elastic fabrics using conventional disperse dyes

Method used

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  • Disperse dye, and preparation method and application thereof
  • Disperse dye, and preparation method and application thereof
  • Disperse dye, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0048] (1), preparation of diazonium salt:

[0049] In a three-necked flask with a stirrer, 4-chlorosulfonic acid phenylacetamide (12.0g), potassium fluoride (180g) and 240 ml of water were mixed and dissolved, stirred and refluxed for 3h, then added to an ice bath for precipitation, Wash the cooled object with tap water at 40°C with a pH value of 4 to 5, and collect the precipitate. 0.1 mole of 4-fluorosulfonanilide precipitate was dissolved in 35 ml of concentrated hydrochloric acid and 350.0 ml of water, and 0.1 mole of sodium nitrite was added in a calcium chloride ice bath at a temperature of -5°C to 5°C. After diazotization for 4-5 hours, add sodium acetate to adjust the pH value to pH 5-6, filter and wash.

[0050] (2), coupling reaction:

[0051] Add 0.1 mole diazonium salt solution to the solution containing 0.1 mole coupling component, 500ml methanol and 500g ice bath, react for 4-5 hours, then adjust the pH value of the diazonium solution to pH 5-6 by adding sodiu...

Embodiment 2-5

[0053] The preparation method is the same as in Example 1, the difference is that: change the diazotization reagent, the diazotization reaction temperature, the molar ratio of the diazonium compound to the diazotization reagent reaction substance, and the molar ratio of the diazotization salt to the coupling reagent reaction substance to obtain The different disperse dyes are shown in the table below.

[0054] Table 1,

[0055]

[0056] Product Confirmation:

[0057] Compound Ⅰ-1:

[0058] Chemical formula:

[0059]

[0060] Physical and chemical parameters: brown solid particles, purple-red solution in toluene solvent, maximum absorption wavelength 523nm.

[0061] Confirmation of structure:

[0062] 1 H-NMR (DMSO-d6): δ=7.05(d, J=7.30Hz, 1H, Ar-H), 8.00(d, J=2.50Hz, 1H, Ar-H), 8.50(d, J=2.50 Hz,1H,Ar-H),3.93-4.20(m,2H,CH 2 ), 3.86 (d, 3H, J=2.80, OCH 3 ),2.62(t,2H,J=3.60Hz,3.60Hz,CH2 COO),2.03(s,3H,CH 3 CO),1.07(m,3H,CH 2 CH 3 ), 4.85 (s, 1H, OH), 10.25 (s, 1...

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Abstract

The invention discloses a fluorine-containing disperse dye with high washing fastness, and a preparation method and an application thereof. The structural formula of the disperse dye is shown in the description. The disperse dye contains a hydroxyl group, an ester group and a long molecular chain, has high affinity with fibers, and difficultly migrates to the surface of the fibers, so the disperse dye has high color fastness, can be applied to one-bath two-step process dyeing of polyester cotton, and reduces the process flow; or the disperse dye can be used in polyester/polyurethane elastic fabrics, terylene ultrafine fiber fabrics and terylene fabrics with special after-finishing demands to improve the washing fastness of the fabrics.

Description

Technical field: [0001] The invention relates to a disperse dye, more specifically to a fluorine-containing disperse dye with high washing fastness and its preparation method and application. Background technique: [0002] Polyester fabrics are generally dyed with disperse dyes at high temperature and high pressure, relying on van der Waals force and intermolecular hydrogen bond force to bond with fibers, so if washing is sufficient after dyeing, the floating color on the surface will be removed completely, and the color fastness such as washing color fastness, perspiration color fastness, The color fastness to water stains can reach level 3 or above. However, with the development of society, there are more and more functional requirements for polyester fabrics, new polyester fiber fabrics and new design elements are widely used in clothing fabrics, and the color fastness of disperse dyes, especially the color fastness to washing, has been put forward. New or higher require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/01C09B29/085D06P3/54D06P3/85
CPCC09B29/0003C09B29/0838D06P3/54D06P3/82D06P3/8233
Inventor 赵雪
Owner SHAOXING UNIVERSITY
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