Polyazo reactive dye compound and preparation method therefor
A reactive dye and compound technology, applied in the field of polyazo reactive dye compounds and their preparation, can solve the problems of poor washing and rubbing fastness, unsatisfactory lifting force and dye depth, etc. Outstanding rubbing fastness, significant economic and social benefits, and good dependence
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Embodiment 1
[0040]In a 1000ml beaker, add 150g of water and 36.1g of sulfonated para-ester (II-1), stir and beat for 1h, add 23g of 30% sodium nitrite solution at 10-15°C to carry out diazotization reaction for 2h, after reaching the end point Add sulfamic acid to destroy excess nitrous acid, then add 15.1g m-ureidoaniline (II-2), control pH3~5 with baking soda, react at 10~15°C for 4~6h, and detect the disappearance of diazonium salt as the end point . Adjust the pH of the reaction solution to 6.5-7 to make it completely dissolved, add 23g of 30% sodium nitrite solution, mix well, add the mixed solution to 30g of 30% hydrochloric acid and carry out diazotization reaction at 10-15°C for 2 hours After reaching the end point, add sulfamic acid to destroy excess nitrous acid to obtain the first diazonium solution for later use.
[0041] In a 1000ml beaker, add 150g of ice water and 28.1g of para-ester (Ⅲ-1), stir and beat for 1 hour, add 30g of 30% hydrochloric acid, and add 23g of 30% sodi...
Embodiment 2
[0045] According to the preparation method described in Example 1, change 15.1g m-ureidoaniline into 15.0g m-acetamidoaniline to obtain the compound of formula (I-2), λmax=640nm in the aqueous solution, when applied to dyeing, the The fabric is dyed green.
[0046]
Embodiment 3~19
[0048]
[0049] According to the preparation method described in Example 1, the difference is that (II-1), (II-2) and (III-1) are replaced with the raw materials in the following Table 1 to obtain the dye compounds shown in the table, Can be used to dye fabrics green when applied to dyeing:
[0050]
[0051]
[0052]
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