CN101812244B - Reactive dye for dyeing nylon and preparation method thereof - Google Patents
Reactive dye for dyeing nylon and preparation method thereof Download PDFInfo
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- CN101812244B CN101812244B CN 200910228242 CN200910228242A CN101812244B CN 101812244 B CN101812244 B CN 101812244B CN 200910228242 CN200910228242 CN 200910228242 CN 200910228242 A CN200910228242 A CN 200910228242A CN 101812244 B CN101812244 B CN 101812244B
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Abstract
The invention relates to a reactive dye for dyeing nylon and a preparation method thereof. The dye has the following structural formula (I). The preparation method for the dye comprises the following steps: (a) adding hydrochloric acid solution and sodium nitrite solution into meta-nitroaniline or p-nitroaniline; (b) dripping H acid into the solution of the step (a); (c) dissolving 2,5-dimethoxy meta-ester into water; (d) adding the solution obtained in the step (c) into cyanuric chloride suspension to perform reaction, and adding 2,5-diaminophenylsulfonic acid into the solution after the reaction is finished; (e) adding the hydrochloric acid solution into the solution of the step (d), and then adding sodium nitrite solution into the solution; (f) dripping the solution of the step (e) into the solution of the step (b); and (g) converting beta-ethyl sulfone sulfate of the coupling solution of the step (f) into vinyl sulfone under the alkali condition so as to form a compound of the structural formula (I).
Description
Technical field
The present invention relates to the dye well its preparation method, particularly, the present invention relates to a kind of active dark blue dye and preparation method thereof.
Background technology
The general dyestuff used of the dyeing of nylon fabrics is weak acid dye and metallized dye.Due to the fabric that weak acid dye dyes, fastness is not good enough, and coloured light is not bright-coloured, the infringement that the particularly pollution in the pollution of metallized dye heavy metal in manufacturing processed and when dyeing, and the nylon fabrics that dyes is held up mankind's skin.Due to the environmental ecology restricting factor, more and more higher to the requirement of dye uptake, degree of fixation and the dyeing waste-water of dyestuff.The exploitation of the active nylon dyestuff of navy is the focus of dye industry always, and this is because navy consumption in all tones is maximum, and is the main ingredient of spelling black.The invention provides a kind of active dark blue dye that is applicable to dyeing nylon, solved the technical problem of cellulosic fibre and tynex dyeing.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of active dark blue dye that is applicable to dyeing nylon, this dyestuff has following structural formula (I):
Wherein, R
1Be H, R
2Be NO
2, perhaps R
2Be H, R
1Be NO
2
The preparation method of said structure formula (I) compound dyestuff comprises the steps:
(a) (to) the N-methyl-p-nitroaniline diazotization reaction:
To (to) add hydrochloric acid soln in N-methyl-p-nitroaniline, then add sodium nitrite solution, obtain diazo liquid;
(b) acid coupling reaction:
The H acid solution is added drop-wise in the diazo liquid that (a) step obtains reacts, get acid coupling liquid;
(c) preparation 2,5-dimethoxy para-ester solution:
2,5-dimethoxy para-ester is dissolved in the water, gets 2, the 5-dimethoxy para-ester aqueous solution;
(d) condensation reaction:
Add 2 of (c) step acquisition in the cyanuric chloride suspension liquid, the 5-dimethoxy para-ester aqueous solution reacts, and adds 2,5-diamino benzene sulfonic acid after reaction is completed, and gets condensation reaction solution;
(e) diazotization reaction:
Add hydrochloric acid soln in the condensation reaction solution of (d) step, then add sodium nitrite solution, get diazo liquid;
(f) alkaline coupling reaction:
The diazo liquid of (e) step is added dropwise in the acid coupling liquid of (b) step, gets alkaline coupling liquid;
(g) hydrolysis reaction
Under alkaline condition, make its beta-sulfuric ester ethyl sulfonyl be converted into the compound that the ethene sulfuryl has so just prepared said structure formula (I) (f) step.
More specifically, the preparation method of said structure formula (I) compound dyestuff comprises the steps:
(a) (to) the N-methyl-p-nitroaniline diazotization reaction:
(to) add hydrochloric acid soln in the solution of N-methyl-p-nitroaniline, then add sodium nitrite solution, guarantee reaction soln pH＜2, be little blueness after starch potassium iodide paper soaks, temperature is 0-35 ℃, reacts 1-3 hour, then eliminate excessive Sodium Nitrite with thionamic acid, get diazo liquid;
(b) acid coupling reaction:
The H acid solution is added drop-wise in the diazo liquid of (a) step, controls temperature of reaction at 5-15 ℃, reacted 4-8 hour, get acid coupling liquid.
(c) preparation 2,5-dimethoxy para-ester solution:
2,5-dimethoxy para-ester is dissolved in the water, regulates pH=3.5-4.0.
(d) condensation reaction:
The solution that adds (c) step to obtain in the cyanuric chloride suspension liquid, keeping temperature is 0-15 ℃, pH=2.5-3.0 dropwises maintenance reaction 4-6 hour, then add 2,5-diamino benzene sulfonic acid, adjusting temperature is 10-40 ℃, pH=4-7 reacted 2-4 hour, got condensation reaction solution.
(e) diazotization reaction:
Add hydrochloric acid soln in the condensation reaction solution of (d) step, then add sodium nitrite solution, keep reaction soln pH＜2, be little blueness after starch potassium iodide paper soaks, keep 0-15 ℃ of temperature, reacted 1-3 hour, then eliminate excessive nitrous acid with thionamic acid, get diazo liquid;
(f) alkaline coupling reaction:
The diazo liquid of (e) step is added dropwise in the acid coupling liquid of (b) step, transfers pH=6-7 with soda ash in dropping, dropwise maintenance reaction 1-2 hour, get alkaline coupling liquid;
(g) hydrolysis reaction
With the alkaline coupling liquid of trash ice adjustment (f) step temperature 10-15 ℃ adds sodium hydroxide solution, adjusts pH=9-9.5, keeps reaction 1-3 hour, then adjusts pH=6-7 with hydrochloric acid soln; Wherein sodium hydroxide solution is 30% sodium hydroxide solution, and hydrochloric acid soln is 30% hydrochloric acid soln,
So just prepared the compound of said structure formula (I).
In aforesaid method:
Cyanuric chloride is the compound of following structural formula (II):
H acid is 1-amino-8-naphthol-3, the 6-disulfonate sodium, and it is the compound of following structural formula (III):
P-Nitroaniline is the compound of following structural formula (IV):
The structure of m-nitraniline is as follows:
2,5-diamino benzene sulfonic acid is the compound of following structure formula V:
2,5-dimethoxy para-ester (the CAS number of boarding is 26672-24-2) is the compound of following structural formula (VI):
In aforesaid method,
Preferably, the H acid solution is the aqueous solution, its pH value=6.8-7.2;
Preferably, (e) hydrochloric acid soln in the step is the aqueous hydrochloric acid of 30 % by weight, and sodium nitrite solution is the sodium nitrite in aqueous solution of 30 % by weight.
Preferably, above-mentioned preparation method can also comprise the post-processing step of product, and post-processing step can be selected as required, and post-processing step comprises:
(h) remove insolubles:
The product of (g) step is joined separate in solid-liquid separator, remove waste residue, collect filtrate in storage tank;
Perhaps sodium-chlor or Repone K are joined in the product of (g) step according to a certain percentage, stirred 1 hour, join in solid-liquid separator and separate, remove filtrate, collect filter cake, filtrate is discharged after treatment, filter cake is dissolved in water, joins in solid-liquid separator and separate, remove waste residue, collect filtrate in storage tank, the waste residue that obtains in this step can be used for engineering soil;
(i) adjust coloured light and intensity:
The filtrate that (h) step obtains is dry with the small spraying tower, dyeing, then carry out the adjustment of coloured light and intensity according to coloration result;
(j) drying:
The look liquid that (i) step is obtained joins in the feed liquid preheating container, adjusts 210 ℃ of inlet temperatures, carries out spraying drying with the temperature out of 95-100 ℃, obtains dark blue dye of the present invention.
In aforesaid method raw material used be all can purchase from the market available.
Active dark blue dye of the present invention has not only that good boldness, degree of fixation, lifting force and colouring are even, dye yield is high, also have the consistency good with other reactive dyestuffs, greatly improved dyeing quality, reduce the usage quantity of dyestuff, but also eliminated the pollution of heavy metal to environment.Synthetic method of the present invention can environmental contamination reduction, and the desired raw material cost is low, and product solubility is high, and bright in colour, application performance is excellent, easy to use, is applicable to cotton, especially dyeing nylon.
Embodiment
In order to understand the present invention, the below further illustrates technical scheme of the present invention with embodiment, but does not limit protection scope of the present invention.
Embodiment
Be prepared as follows the compound of structural formula (VII)
(a) add end water in reactor, add 13.8 kilograms of p-Nitroaniline, stirring and dissolving, 30% quantitative hydrochloric acid soln is added, add rubble ice, making its solution quality/volume (g/ml) concentration is 10%, then adds 30% sodium nitrite solution, keep pH value of solution＜2 in reaction process, be little blueness after starch potassium iodide paper soaks, keeping temperature is 15 ℃, reacts 2 hours, eliminate excessive nitrous acid with thionamic acid, get diazo liquid.
(b) 32.7 kilograms of H acid are prepared into the aqueous solution, regulate pH value=6.8-7.2, join in the diazo liquid of (a) step, keeping temperature is 10 ℃, reacts 6 hours, gets acid coupling liquid.
(c) add end water in reactor, add 33.4 kilograms of 2,5-dimethoxy para-esters, stirring and dissolving is transferred pH=3.5-4.0 with sodium bicarbonate, and making mass/volume (g/ml) concentration is 15%, obtains 2,5-dimethoxy para-ester solution.
(d) add water of a small amount of end in reactor, add rubble ice, then add 17.7 kilograms of cyanuric chlorides, drip in stirring that (c) step obtains 2,5-dimethoxy para-ester solution, keeping temperature is 5 ℃, pH=2.5-3.0, dropwise maintenance reaction 5 hours, add 18.0 kilograms of 2,5-diamino benzene sulfonic acids in solution, keeping temperature is 30 ℃, pH=6 reacted 3 hours, got condensated liquid.
(e) with the condensated liquid temperature of rubble ice adjustment (d) step, add 30% hydrochloric acid, add again 30% sodium nitrite solution, keep reaction soln pH＜2, be little blueness after starch potassium iodide paper soaks, keeping temperature is 5 ℃, reacts 2 hours, eliminate excessive nitrous acid with thionamic acid, get diazo liquid.
(f) the acid coupling liquid of (b) step being adjusted temperature is 25 ℃, and the diazo liquid that (e) step is obtained adds in this acid coupling liquid, transfers pH=6-7 with soda ash in dropping, dropwises to keep reaction 1 hour.
(g) rubble ice is joined in the product that (f) step obtains, adjusting temperature is 10 ℃, adds 30% sodium hydroxide solution, adjusts pH=9-9.5, keeps 2 hours, then with 30% hydrochloric acid soln adjustment pH=6-7.Obtain the compound of structural formula (VII).
Post-processing step:
(h) (g) step solution is joined separate in solid-liquid separator, remove waste residue, collect filtrate in storage tank, obtain 1.5 kilograms of left and right waste residues and be used as engineering soil.
(i) filtrate that (h) step is obtained is dry with the small spraying tower, dyeing, then carry out the adjustment of coloured light and intensity according to coloration result.
(k) the look liquid with (i) step joins in the feed liquid preheating container, adjusts 210 ℃ of inlet temperatures, carries out spraying drying with the temperature out of 95-100 ℃., the finished product after being processed.
The performance table of the nylon active dark blue dye of the structural formula that embodiment prepares (VII) is as follows:
Compound of the present invention and preparation method thereof is described by specific embodiment.Those skilled in the art can use for reference the links such as content appropriate change raw material of the present invention, processing condition and realize corresponding other purpose, its relevant change does not all break away from content of the present invention, within all similar replacements and change will become apparent to those skilled in the art that and all be deemed to be included in scope of the present invention.
Claims (6)
1. active dark blue dye that is applicable to dyeing nylon, this dyestuff has following structural formula (I):
Wherein, R
1Be H, R
2Be NO
2, perhaps R
2Be H, R
1Be NO
2
2. the preparation method of the dyestuff of claim 1, the method comprises the steps:
(a) m-nitraniline or p-Nitroaniline diazotization reaction:
Add hydrochloric acid soln in m-nitraniline or p-Nitroaniline, then add sodium nitrite solution, obtain diazo liquid;
(b) acid coupling reaction:
The H acid solution is added drop-wise in the diazo liquid that (a) step obtains reacts, get acid coupling liquid;
H acid is 1-amino-8-naphthol-3, the 6-disulfonate sodium, and it is the compound of following structural formula (III):
(c) preparation 2,5-dimethoxy para-ester solution:
2,5-dimethoxy para-ester is dissolved in the water, gets 2, the 5-dimethoxy para-ester aqueous solution;
(d) condensation reaction:
Add 2 of (c) step acquisition in the cyanuric chloride suspension liquid, the 5-dimethoxy para-ester aqueous solution reacts, and adds 2,5-diamino benzene sulfonic acid after reaction is completed, and gets condensation reaction solution;
(e) diazotization reaction:
Add hydrochloric acid soln in the condensation reaction solution of (d) step, then add sodium nitrite solution, get diazo liquid;
(f) alkaline coupling reaction:
The diazo liquid of (e) step is added dropwise in the acid coupling liquid of (b) step, gets alkaline coupling liquid;
(g) hydrolysis reaction
The alkaline coupling liquid that (f) step is obtained makes its beta-sulfuric ester ethyl sulfonyl be converted into the ethene sulfuryl under alkaline condition, has so just prepared the compound of said structure formula (I).
3. method according to claim 2, the method comprises the steps:
(a) m-nitraniline or p-Nitroaniline diazotization reaction:
Add hydrochloric acid soln in the solution of m-nitraniline or p-Nitroaniline, then add sodium nitrite solution, guarantee reaction soln pH＜2, be little blueness after starch potassium iodide paper soaks, temperature is 0-35 ℃, reacts 1-3 hour, then eliminate excessive Sodium Nitrite with thionamic acid, get diazo liquid;
(b) acid coupling reaction:
The H acid solution is added drop-wise in the diazo liquid of (a) step, controls temperature of reaction at 5-15 ℃, reacted 4-8 hour, get acid coupling liquid;
(c) preparation 2,5-dimethoxy para-ester solution:
2,5-dimethoxy para-ester is dissolved in the water, regulates pH=3.5-4.0;
(d) condensation reaction:
The solution that adds (c) step to obtain in the cyanuric chloride suspension liquid, keeping temperature is 0-15 ℃, pH=2.5-3.0 dropwises maintenance reaction 4-6 hour, then add 2,5-diamino benzene sulfonic acid, adjusting temperature is 10-40 ℃, pH=4-7 reacted 2-4 hour, got condensation reaction solution;
(e) diazotization reaction:
Add hydrochloric acid soln in the condensation reaction solution of (d) step, then add sodium nitrite solution, keep reaction soln pH＜2, be little blueness after starch potassium iodide paper soaks, keep 0-15 ℃ of temperature, reacted 1-3 hour, then eliminate excessive nitrous acid with thionamic acid, get diazo liquid;
(f) alkaline coupling reaction:
The diazo liquid of (e) step is added dropwise in the acid coupling liquid of (b) step, transfers pH=6-7 with soda ash in dropping, dropwise maintenance reaction 1-2 hour, get alkaline coupling liquid;
(g) hydrolysis reaction
With the alkaline coupling liquid of trash ice adjustment (f) step temperature 10-15 ℃ adds sodium hydroxide solution, adjusts pH=9-9.5, keeps reaction 1-3 hour, then adjusts pH=6-7 with hydrochloric acid soln; Wherein sodium hydroxide solution is 30% sodium hydroxide solution, and hydrochloric acid soln is 30% hydrochloric acid soln;
So just prepared the compound of said structure formula (I).
4. according to claim 2 or 3 described methods, wherein the H acid solution in (b) step is the aqueous solution, its pH value=6.8-7.2.
5. according to claim 2 or 3 described methods, wherein the hydrochloric acid soln in (e) step is the aqueous hydrochloric acid of 30 % by weight, sodium nitrite solution is the sodium nitrite in aqueous solution of 30 % by weight.
6. according to claim 2 or 3 described methods, the method also comprises the post-processing step of product, and post-processing step comprises:
(h) remove insolubles:
The product of (g) step is joined separate in solid-liquid separator, remove waste residue, collect filtrate in storage tank;
Perhaps sodium-chlor or Repone K are joined in the product of (g) step according to a certain percentage, stirred 1 hour, join in solid-liquid separator and separate, remove filtrate, collect filter cake, filtrate is discharged after treatment, filter cake is dissolved in water, joins in solid-liquid separator and separate, remove waste residue, collect filtrate in storage tank, the waste residue that obtains in this step is used for engineering soil;
(i) adjust coloured light and intensity:
The filtrate that (h) step obtains is dry with the small spraying tower, dyeing, then carry out the adjustment of coloured light and intensity according to coloration result;
(j) drying:
The look liquid that (i) step is obtained joins in the feed liquid preheating container, adjusts 210 ℃ of inlet temperatures, carries out spraying drying with the temperature out of 95-100 ℃, obtains the dark blue dye of claim 1.
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| CN 200910228242 CN101812244B (en) | 2009-11-16 | 2009-11-16 | Reactive dye for dyeing nylon and preparation method thereof |
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|---|---|---|---|
| CN 200910228242 CN101812244B (en) | 2009-11-16 | 2009-11-16 | Reactive dye for dyeing nylon and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751103A (en) * | 2003-02-21 | 2006-03-22 | 日本化药株式会社 | Reactive dye composition and method of dyeing with the same |
| CN1768118A (en) * | 2003-04-01 | 2006-05-03 | 西巴特殊化学品控股有限公司 | Mixtures of reactive dyes and their use |
| CN1934195A (en) * | 2004-03-19 | 2007-03-21 | 亨斯迈先进材料（瑞士）有限公司 | Mixtures of reactive dyes and their use |
| CN101215427A (en) * | 2008-01-22 | 2008-07-09 | 天津市德凯化工有限公司 | Method of preparing navy blue active dyestuff |
-
2009
- 2009-11-16 CN CN 200910228242 patent/CN101812244B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751103A (en) * | 2003-02-21 | 2006-03-22 | 日本化药株式会社 | Reactive dye composition and method of dyeing with the same |
| CN1768118A (en) * | 2003-04-01 | 2006-05-03 | 西巴特殊化学品控股有限公司 | Mixtures of reactive dyes and their use |
| CN1934195A (en) * | 2004-03-19 | 2007-03-21 | 亨斯迈先进材料（瑞士）有限公司 | Mixtures of reactive dyes and their use |
| CN101215427A (en) * | 2008-01-22 | 2008-07-09 | 天津市德凯化工有限公司 | Method of preparing navy blue active dyestuff |
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Address after: 300270 No. 1558 Kaixuan street, Dagang Petrochemical Industrial Park, Binhai New Area, Tianjin Patentee after: Tianjin Dek Chemical Co.,Ltd. Address before: 300163 Tianjin city Dongli District ZhangGuiZhuang road Ji'an Road Patentee before: Tianjin Dek Chemical Co.,Ltd. |
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Effective date of registration: 20230131 Granted publication date: 20130619 |