Azo dye composition and application thereof

A technology of azo dyes and compositions, applied in the field of textile printing and dyeing, can solve the problems of poor compatibility, severe dye decomposition, intolerance to alkaline baths and high pH dyeing baths, etc.

Active Publication Date: 2008-09-17
浙江昱泰染化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In summary, although some commercially available disperse dyes can be dyed under weakly alkaline conditions, they are not resistant to alkaline baths with high concentrations of alkaline agents and high pH dyeing baths, and the compatibility between single dyes is poor, so they cannot better meet the requirements of the previous requirements. To deal with the needs of scouri

Method used

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  • Azo dye composition and application thereof
  • Azo dye composition and application thereof
  • Azo dye composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Mix 51 kilograms of azo dyes shown in formula (a-1) and 49 kilograms of formula (a-9), and 125 kilograms of sodium lignosulfonate with water, grind and disperse with a grinder, and spray dry to obtain final product finished product. The dye is suitable for one-bath and one-step dyeing of polyester fiber and its blended fabrics under alkaline conditions combined with pretreatment and dyeing, and can provide orange hues with excellent fastness properties to the fabrics.

[0071]

[0072]

Embodiment 2～14

[0074] According to the data shown in Table 1, the azo dye, 125 kg of additives, and water were added for beating, mixing, grinding and dispersing with a grinder, and spray drying to obtain a finished product.

[0075] Table 1 (weight unit is kilogram)

[0076]

[0077]

Embodiment 15

[0079] 50 kilograms of the azo dye composition prepared in Example 1, 10 kilograms of Example 7 and 40 kilograms of Example 9 were mixed to obtain a finished product. The dye is suitable for one-bath and one-step dyeing of polyester fiber and its blended fabrics under alkaline conditions. The dyeing speed is fast and uniform, and it can provide black fabrics with excellent fastness properties.

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Abstract

The invention relates to an azo dye compound and the application thereof. The compound is the combination of at least two dyes with A in the general formula (I) selected from any structure of (a), (b) or (c); any combination with A to be at least one from (a), at least one from (b) or at least one from (c); or the combination of at least one dye shown by the general formula (1) and at least one general disperse dye, or/and a dye as shown by the formula (2). Each substituent is shown as the claim of right. The compound can dye polyester and blended fabric thereof under the condition of strong alkalinity with pH more than or equal to 11 and less than or equal to 14; the alkalinity condition can effectively remove slurry and oil on the fabric, and overcomes the defect that decomposition products can be separated out in an acid bath, and cause dyeing defect. The cloth and the fabric adopting the azo dye compound are neat and have excellent styles. In addition, the polyester fiber and the blended fabric thereof can be pretreated with alkalinity and be dyed in a bath and at one step, thus improving the efficiency, and reducing the manufacturing cost and the waste water from dyeing.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and relates to an azo dye composition and an environment-friendly, energy-saving and high-efficiency dyeing method applied to polyester fibers. Background technique [0002] The staining of various oil agents in the spinning process of polyester and other chemical fiber fabrics is a problem that must be solved in the pre-dyeing process. Alkaline conditions are basically used for the removal of oil agents. But this technological condition causes unnecessary trouble to dyeing process. As we all know, conventional disperse dyes must be dyed under acidic conditions. After alkaline degreasing, they must be drained and washed, and then dyed with acetic acid to adjust the pH value. How to shorten the dyeing process and achieve one-bath degreasing dyeing is a difficult problem for polyester dyeing. In the past ten years, the problems of energy shortage and environmental pollution h...

Claims

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Application Information

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IPC IPC(8): C09B67/36D06P1/02D06P3/52D06P3/24D06P3/82
Inventor 陈旭王喆荆丽丽
Owner 浙江昱泰染化科技有限公司
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