Fiber-reactive azo dyes, preparation thereof and use thereof

A technology of azo dyes and coupling, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems that do not fully meet this demand

Inactive Publication Date: 2011-06-29
DYSTAR COLOURS DISTRIBUTION GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Known dyes, including those described in DE 27

Method used

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  • Fiber-reactive azo dyes, preparation thereof and use thereof
  • Fiber-reactive azo dyes, preparation thereof and use thereof
  • Fiber-reactive azo dyes, preparation thereof and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0085] Example 1

[0086] a) Suspend 19 parts of cyanuric chloride in 500 parts of water and 100 parts of ice. 32 parts of 2-amino-5-naphthol-1,7-disulfonic acid was added, followed by stirring at 0-5°C at pH 1.5 for about 3 hours.

[0087] b) 30 parts of 5-(β-sulfatoethanesulfonyl)-2-methoxyaniline are dissolved in 200 parts of water at pH 6-7. 7 parts of sodium nitrite were added, and the solution was added dropwise to a mixture of 20 parts of concentrated hydrochloric acid, 100 parts of ice, and 50 parts of water. This was followed by stirring at 0-5°C for 2 hours. The excess nitrite is decomposed with sulfamic acid.

[0088] c) Add the diazonium compound prepared according to b) dropwise to the reaction mixture obtained according to a) while maintaining the pH between 5 and 6 with a 20% sodium carbonate solution. During this process, the temperature is raised to room temperature.

[0089] d) Subsequently, 28 parts of 1-amino-8-naphthol-3,6-disulfonic acid were added at pH 3.5-...

Example Embodiment

[0095] Example 2

[0096] In a method similar to Example 1, the dye (λ max =518nm).

[0097]

Example Embodiment

[0098] Example 3

[0099] In a method similar to Example 1, the dye (λ max =511nm).

[0100]

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PUM

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Abstract

The present invention provides azo dyes of formula (1), wherein D, M and Y are each as defined in claim 1, processes for their preparation and their use.

Description

(1) Technical field [0001] The invention relates to the technical field of fiber reactive azo dyes. (2) Background technology [0002] There is a need in the textile industry for vivid yellowish-red to red reactive dyes with good lifting power and good color fastness, such as for dyeing the dyes known as "Marlboro Red" or "Coca-Cola Red". The case required by the hue of "red". [0003] Known dyes, including those described in DE 27 48 966 and EP 0 511 523 A1, do not fully satisfy this need. (3) Contents of the invention [0004] The inventors of the present invention have found dyes that very much meet the requirements for lift, brightness, wash-off and color fastness. [0005] Accordingly, the present invention provides azo dyes of formula (1) [0006] [0007] in [0008] Y stands for -CH=CH 2 or -CH 2 CH 2 Z, wherein Z is a base-separable group; [0009] D represents a group with chemical formula (2), (3) or (4) [0010] [0011] and [0012] M represent...

Claims

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Application Information

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IPC IPC(8): C09B62/44C09D11/00
CPCC09B62/4415C09D11/328C09B62/44
Inventor S·伊兰伯格
Owner DYSTAR COLOURS DISTRIBUTION GMBH
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