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Composite active black dye

A technology of reactive black and dyes, applied in the direction of organic dyes, etc., can solve the problem of dry and wet friction and staining of white cloth, which is difficult to meet customer requirements, alkali resistance, water fastness, blackness is not ideal, deep dyeing To achieve the effect of ensuring lifting power and dyeing depth, excellent dyeing fastness and good level dyeing

Inactive Publication Date: 2007-09-19
SHANGHAI KEHUA DYESTUFF IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Black dye is an indispensable and widely used variety in textiles. In the past, sulfur black was mostly used for dyeing cellulose fibers, but sulfur black caused serious environmental pollution during the use process.
With the continuous improvement of people's requirements for the feel, texture, comfort, color fastness and environmental protection of textile fabrics, it has become the current development trend to dye black with reactive dyes instead of sulfur dyes. The fastness to rubbing and staining of white cloth has been difficult to meet customer requirements
[0003] The most widely used reactive black GR on the market is compounded by adding orange components on the basis of C.I. reactive black 5. Its alkali resistance, color fastness to water and blackness are not ideal. Patent CN1524904 discloses Although composite reactive black dyes have been greatly improved in terms of color fixing rate, level dyeing property, and washing fastness, the dyeing depth (blackness) still needs to be improved.

Method used

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  • Composite active black dye
  • Composite active black dye
  • Composite active black dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 65 grams of dyestuff A shown in formula (Ia), 17 grams of dyestuff B shown in formula (IIa), 13 grams of dyestuff C shown in formula (IIIb), 5 grams of dyestuff D shown in formula (IVa), yuan 54 grams of starch powder and 100 grams of water are blended, stirred evenly, and then spray-dried to obtain the reactive black dye of the present invention.

Embodiment 2~11

[0028] According to the preparation method of Example 1, dye A, dye B, dye C, and dye D are mixed according to the data shown in Table 1 below as the dye composition used in conjunction. Among them, Ia~Id respectively represent the dye A shown in the formula (Ia)~(Id) in the summary of the invention, IIa~IId respectively represent the dye B shown in the formula (IIa)~(IId), IIIa~IIIc respectively represent the formula (IIIa ) to dye C represented by (IIIc), and IVa and IVb represent dye D represented by formulas (IVa) and (IVb), respectively.

[0029] Example

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Abstract

The present invention relates to a kind of disazo dyestuffs composition, the described composite active blank dyestuff mainly contains four dyestuffs, said invention also provides their structure formulas. The described composite dyestuff is suitable for dyeing dark colour fabrics, such as cellulose fibre, cotton fibre and synthetic fibre, etc., and has good level-dyeing property, repeatability, high dyeing fastness, fastness to washing and wet rubbing fastness.

Description

(1) Technical field [0001] The invention relates to a disazo dye composition. (2) Background technology [0002] Black dye is an indispensable and widely used variety in textiles. In the past, sulfur black was mostly used for dyeing cellulose fibers, but sulfur black caused serious environmental pollution during use. With the continuous improvement of people's requirements for the feel, texture, comfort, color fastness and environmental protection of textile fabrics, it has become the current development trend to dye black with reactive dyes instead of sulfur dyes. The fastness to rubbing and white cloth staining has been difficult to meet customer requirements. [0003] The most widely used reactive black GR on the market is compounded by adding orange components on the basis of C.I. reactive black 5. Its alkali resistance, color fastness to water and blackness are not ideal. Patent CN1524904 discloses Although composite reactive black dyes have been greatly improved in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/24
Inventor 阮伟祥张云保汪仁良
Owner SHANGHAI KEHUA DYESTUFF IND
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