Novel environment-friendly acid blue-light red dye applied to furs and synthesis method of dye
A red dye, a new type of technology, applied in dyeing methods, azo dyes, organic dyes, etc., can solve the problems of color dyes that cannot meet the requirements of consumers, poor level dyeing, poor solubility, etc., to achieve superior compatibility, The dyeing residue is shallow and has no allergenic effect
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Embodiment 1
[0062] A kind of synthetic method of novel environment-friendly acid blue light red dye for fur, comprises the following steps:
[0063] (1) Diazotization reaction
[0064] Add 100ml of water to a 500ml beaker, stir and add 9g of p-nitroaniline o-sulfonic acid, then add 18g of 33% concentrated hydrochloric acid, and stir for 30 minutes.
[0065] Add 7g of sodium nitrite to a 200ml beaker, then add 30ml of water, stir to dissolve it all, then add it into the above-mentioned 500ml beaker in a thin stream, add it within 1min, keep warm at 0°C for 1.5 hours, then add sulfamic acid to remove it. Remove excess sodium nitrite.
[0066] (2) Coupling
[0067] Weigh 11g (100%) Nivenic acid in the beaker of 1000ml, add water 200ml and stir, weigh 5g 30% sodium hydroxide aqueous solution, join in the above-mentioned beaker, stir and make material all dissolve, make PH between 8 to 9, then Filter with a Buchner funnel, filter out the insoluble matter, put the filtered solution in a 2000...
Embodiment 2
[0073] A kind of synthetic method of novel environment-friendly acid blue light red dye for fur, comprises the following steps:
[0074] (1) Diazotization reaction
[0075] Add 100ml of water to a 500ml beaker, stir and add 10g of p-nitroaniline o-sulfonic acid, then add 19g of 33% concentrated hydrochloric acid, and stir for 30 minutes.
[0076] Add 8g of sodium nitrite to a 200ml beaker, then add 30ml of water, stir to dissolve it all, then add it into the above 500ml beaker in a thin stream, finish adding within 2min, keep warm at 5°C for 2.5 hours, then add sulfamic acid to remove Remove excess sodium nitrite.
[0077] (2) Coupling
[0078] Weigh 12g (100%) Nivenic acid in the beaker of 1000ml, add water 200ml and stir, weigh 5g 30% sodium hydroxide aqueous solution, join in the above-mentioned beaker, stir and make material all dissolve, make PH between 8 to 9, then Filter with a Buchner funnel, filter out the insoluble matter, put the filtered solution in a 2000ml bea...
Embodiment 3
[0084] A kind of synthetic method of novel environment-friendly acid blue light red dye for fur, comprises the following steps:
[0085] (1) Diazotization reaction
[0086] Add 100ml of water to a 500ml beaker, stir and add 9.48g of p-nitroaniline o-sulfonic acid, then add 18.25g of 33% concentrated hydrochloric acid, and stir for 30 minutes.
[0087] Add 7.35g of sodium nitrite to a 200ml beaker, then add 30ml of water, stir to dissolve it all, then add it into the above 500ml beaker in a thin stream, finish adding within 1min, keep warm at 3°C for 2 hours, then add sulfamic acid Remove excess sodium nitrite.
[0088] (2) Coupling
[0089] Weigh 11.76g (100%) Nivenic acid in the beaker of 1000ml, add water 200ml and stir, weigh 5g 30% sodium hydroxide aqueous solution, join in the above-mentioned beaker, stir and make material all dissolve, make PH between 8 to 9, Then filter with a Buchner funnel, filter out the insoluble matter, put the filtered solution in a 2000ml be...
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