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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 48 966 and EP 0 511 523 A1, do not fully meet this need

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 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 were added, followed by stirring at pH 1.5 at 0-5°C 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. Decompose excess nitrite with sulfamic acid.

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

[0089] d) Subsequently, 28 parts of 1-amino-8-naphthol-3,6-disulfonic acid are added at pH 3.5-4 and at a temperatur...

example 2

[0096] In a manner similar to that of Example 1, a dye (λ max = 518nm).

[0097]

example 3

[0099] In a manner similar to that of Example 1, a dye (λ max = 511 nm).

[0100]

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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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