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Orange reactive dye and preparation method thereof

A reactive dye, orange technology, applied in the field of orange reactive dye and its preparation, can solve the problems of easy precipitation of orange components, high affinity, color difference, etc., and achieves good sunlight-perspiration fastness, improved compatibility, The effect of improving the fixing rate

Inactive Publication Date: 2008-07-30
褚平忠
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the jet blackness of the blended dyes is often not ideal, and because reactive orange KN-GR is the active group of dichlorotriazine and has a high affinity with cellulose fibers, it is first adsorbed on the fibers, while reactive black KNB is colored Slow, so it causes color difference, easy to cause color flower, especially when adding alkali to fix the color, the orange component is easy to sink and precipitate, causing color spots

Method used

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  • Orange reactive dye and preparation method thereof
  • Orange reactive dye and preparation method thereof
  • Orange reactive dye and preparation method thereof

Examples

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Embodiment Construction

[0016] Shrinking: Put 150 parts of ice-water mixture in a shrinking bucket, add 18.5 parts of 100% cyanuric chloride, beat at 0°C for 45-60 minutes, then add 4.2 parts of 100% cyanamide solution dropwise, and finish adding Finally, control the temperature at 0-5° C., adjust the pH to 7-9 with 10% NaOH solution, and adjust the reaction for 10-40 minutes.

[0017] Second shrinkage: Put 200 parts of water in the dissolving bucket, put in 23.9 parts of 100% J acid, adjust the pH to 5.8-6.5 with 10% NaOH solution after beating for one hour, dissolve it, and adjust the volume to control the J acid concentration 4 -5%, then add it to the condensate, raise the temperature to 35-40°C, and adjust the pH to 3-6 with 15% pure lye, react for 3-4 hours to the end, and drop to room temperature for later use.

[0018] Diazo: Put 100 parts of ice-water mixture in a diazo bucket, put in 28.1 parts of 100% p-(β-sulfate ethyl sulfone) aniline, beat for 10 minutes, add 12 parts of industrial hydro...

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Abstract

The invention discloses orange reactive dye and the preparation method thereof. The dye and the structural formula thereof are as follows: the preparation method comprises the following steps: after the unipolycondensation reaction of tricyanogen chloride and cyanamid, the copolycondensation reaction is performed with J acid; Beta sulfuric ester ethyl sulfone amino benzene is diazotized to obtain diazo salt, and then the diazo salt is added into copolycondensation compound to perform the coupling reaction, to obtain mono azo dye; 2amido ethyl-2(1) sulfonyl ethoxyl sulphone is added into mono azo dye solution to perform the tri-polycondensation reaction. The invention has the advantages of high color fixation rate, good building up property and level dyeing property, good sun-proof performance, sweat resistance and washing fastness, which is suitable for the cellulose fiber dying and simultaneously suitable for the fiber dying such as direct viscose and artificial amiray ramie, etc.

Description

technical field [0001] The invention relates to an orange reactive dye and a preparation method thereof. Background technique [0002] The reactive dyes currently produced are usually halogenated triazine type, phenyl ethyl sulfone sulfate type or mixed type of halogenated triazine and phenyl ethyl sulfone sulfate ester. In the dyeing process, a large amount of salt is used to cause the color of dyeing wastewater. The degree is large and the environmental pollution is heavy. Secondly, when dyeing deep black, reactive black KN-B (reactive black 5) and reactive orange KN-GR (reactive orange 129) are often blended together. However, the jet blackness of the blended dyes is often not ideal, and because reactive orange KN-GR is the active group of dichlorotriazine and has a high affinity with cellulose fibers, it is first adsorbed on the fibers, while reactive black KNB is colored Slow, so it causes color difference, easy to cause color flower, especially when adding alkali to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/53C09B62/51
Inventor 褚平忠
Owner 褚平忠
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