CN108102419A - One kind is suitable for digital ink-jet printed orange active dye and preparation method thereof - Google Patents

One kind is suitable for digital ink-jet printed orange active dye and preparation method thereof Download PDF

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Publication number
CN108102419A
CN108102419A CN201711375795.4A CN201711375795A CN108102419A CN 108102419 A CN108102419 A CN 108102419A CN 201711375795 A CN201711375795 A CN 201711375795A CN 108102419 A CN108102419 A CN 108102419A
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reaction
added
acid
sodium
contracting
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CN108102419B (en
Inventor
张兴华
邢广文
张英磊
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Tianjin Dek Chemical Co Ltd
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Tianjin Dek Chemical Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B62/00Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
    • C09B62/02Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring
    • C09B62/04Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring to a triazine ring
    • C09B62/08Azo dyes
    • C09B62/09Disazo or polyazo dyes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/38General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
    • D06P1/382General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes reactive group directly attached to heterocyclic group
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/30Ink jet printing

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)

Abstract

The present invention relates to one kind to be suitable for digital ink-jet printed orange active dye and preparation method thereof, which has following structural formula:

Description

One kind is suitable for digital ink-jet printed orange active dye and preparation method thereof
Technical field
The present invention relates to a kind of digital ink-jet printed reactive dye and preparation method thereof.It is especially a kind of digital ink-jet printed Orange active dye and preparation method thereof.
Background technology
Typically now digital ink-jet printed dyestuff used is common acid dyes and existing reactive dye.Due to acidity Dye shade is not very gorgeous, and the active group ethyl sulfuryl sulfuric acid ester base of reactive dye easily hydrolyzes, and causes digital ink-jet Dyestuff is unstable, easy clog nozzle.Acid dyes and existing reactive dye have been unable to meet high-grade digital ink-jet printed The demand of dyestuff.
The content of the invention
The technical problems to be solved by the invention are to provide a not clog nozzle, reduce defect ware, required raw material It is at low cost and beautiful in colour, have excellent performance, it is easy to use, the digital ink-jet printed orange active dye of strong applicability and its Preparation method.
In order to solve the above technical problem, the present invention provides a kind of orange digital ink-jet printed reactive dye and its preparations Method, the dyestuff are such as following formula (I) compound represented:
In formula:M is-H either alkali metal, and preferred as alkali is Na or K.
Specifically, the present invention provides a kind of method for preparing orange digital ink-jet printed reactive dye, this method includes Following steps:
(a) dissolving of 2.4- diamino benzene sulfonic acids sodium:
2.4- diamino benzene sulfonic acid sodium is added in water, is stirred to complete molten, is obtained 2.4- diamino benzene sulfonic acid sodium solutions;
(b) a contracting reaction:
At 0-8 DEG C, when making Cyanuric Chloride and 2.4- diamino benzene sulfonic acids sodium reaction 4-6 small, the pH controls of reactant exist 2-4 obtains a contracting reaction solution;
Preferably, trash ice is added in water, adds in Cyanuric Chloride, is carried out ice and is ground 15 minutes, 2.4- diaminos are then added dropwise Base benzene sulfonic acid sodium salt solution maintains pH in 2-4 with sodium acid carbonate, and temperature is kept for 0-8 DEG C, when reaction 5 is small after, obtain a contracting reaction solution;
(c) two contracting reaction:
In (b) step 1 contracting reaction solution, amion acetic acid is added in, is stirred evenly, temperature is risen to 30-45 DEG C, reacts 5-7 Hour, the pH value of reaction is maintained at 4-6.5, obtains two contracting reaction solutions;
Preferably, pH=4-6.5 is maintained with sodium carbonate, when reaction 6 is small;
(d) two contracting reaction solution diazo-reaction:
In (c) step 2 contracting reaction solution, hydrochloric acid and sodium nitrite are added in, temperature control is when 0-10 DEG C of reaction 1-3 is small.
Preferably, trash ice is added in (c) step 2 contracting reaction solution, temperature is controlled at 0 DEG C, stirred evenly, and adds in hydrochloric acid After solution, sodium nitrite solution is added in, when 0-10 DEG C of temperature, reaction 2 are small;
Reaction process is in blueness after ensuring Congored test paper leaching always, and in micro- blueness after the leaching of KI test paper, reaction, which finishes, uses ammonia Base sulfonic acid removes remaining sodium nitrite, obtains two contracting reaction solution diazols;
(e) dissolving of 3,5- diaminobenzoic acids:
3,5- diaminobenzoic acids are added in water, are stirred evenly, and with 30% sodium hydroxide tune pH=7, obtain 3,5- bis- Aminobenzoic acid solution;
(f) a step coupling reaction:
Two contracting reaction solution diazols are added in 3,5- diaminobenzoic acid solution, are stirred evenly, with sodium carbonate tune pH =5-8 is warming up to 15-30 DEG C, when reaction 3~6 is small, obtains a step coupling reaction liquid;
(g) aniline -2,5- disulfonic acid diazo-reaction:
At 0-10 DEG C, when making aniline -2,5- disulfonic acid, hydrochloric acid and sodium nitrite reaction 1-3 small.
Preferably, aniline -2,5- disulfonic acid and trash ice are added in water, temperature is controlled at 0 DEG C, stirred evenly, and adds in hydrochloric acid After solution, sodium nitrite solution is added in, when 0-10 DEG C of temperature, reaction 2 are small.
Reaction process is in blueness after ensuring Congored test paper leaching always, and in micro- blueness after the leaching of KI test paper, reaction, which finishes, uses ammonia Base sulfonic acid removes remaining sodium nitrite, obtains aniline -2,5- disulfonic acid diazol;
(h) two step coupling reaction:
Aniline -2,5- disulfonic acid diazol is added in the product of step (f) acquisition, stirred evenly, with sodium carbonate tune PH=5-8, is warming up to 15-30 DEG C, when reaction 3~6 is small, and filtering obtains two step coupling reaction liquid;I.e. digital ink-jet printed reactive orange Dyestuff.
Preferably, method of the invention can also include step (i):
(i) coloured light and intensity are adjusted:
(h) step material is dyed, carries out coloured light further according to coloration result, intensity adjusts;
Preferably, method of the invention can also include step (j):
(j) post-process:
Add in activated carbon in the material obtained by (i) step, when stirring 1 is small after, be added in solid-liquid separator and divided From collection filtrate.By filtrate by NF membrane desalination, dye strength in feed liquid is concentrated after electrical conductivity is down to 2000 μ S/cm To 30%, insoluble matter is removed finally by ultrafiltration membrane, it is saturating with micropore filtering film (diameter 50mm, 0.22 μm of aperture) detection 20min It is qualification excessively to reach 500ml.
(k) finished product packing:
Article obtained by (j) step is packed.
Advantageous effect possessed by the present invention:
The preparation method of the present invention, prepared digital ink-jet printed active orange dye have bright-coloured beautiful coloured light, respectively Item wet fastness properties is very superior, not clog inkjet head, and easy to operate.
Digital ink-jet printed active orange dye prepared by the preparation method of the present invention, in ink-jet reactive dye, with acid Property dyestuff compare, either every fastness is still to being all excellent in terms of environmental protection.
Specific embodiment
To illustrate technical scheme, embodiment is set forth below and carrys out the technical solution that the present invention will be described in detail, The embodiment does not form any limitation of the invention.
Embodiment 1
A kind of digital ink-jet printed active orange dye, the structural formula of the dyestuff are:
The preparation method of the digital ink-jet printed active orange dye, includes the following steps:
A, the dissolving of 2.4- diamino benzene sulfonic acids sodium:Add 300 liters of water into retort, add in 2.4- diamino benzene sulfonic acid sodium 65kg stirs to complete molten, obtains 2.4- diamino benzene sulfonic acid sodium solutions;
B, a contracting reaction:Into retort plus 300 liters, trash ice 500Kg of water, stirring, addition Cyanuric Chloride 48kg, ice grind 15 After minute, start that 2.4- diamino benzene sulfonic acid sodium solutions are added dropwise, be added dropwise, maintaining PH with sodium acid carbonate, temperature is kept in 2-4 0-8 DEG C, reaction 5 it is small when after, obtain a contracting reaction solution.It is spare;
C, two contracting reaction:In (b) step 1 contracting reaction solution, amion acetic acid 20kg is added in, stirs evenly, temperature is risen to 30-45 DEG C, when reaction 5-7 is small, the pH value of reaction is maintained at 4-6.5, obtains two contracting reaction solutions;
D, two contracting reaction solution diazo-reaction:In (c) step 2 contracting reaction solution, trash ice is added in, temperature is controlled at 0 DEG C. 30% hydrochloric acid 76kg is added in, then adds 30% sodium nitrite solution 65kg, in 0-10 DEG C of temperature, when reaction 2 is small, reaction process Always ensure after Congored test paper leaching in blueness, in micro- blueness after the leaching of KI test paper, reaction finish removed with sulfamic acid it is remaining sub- Sodium nitrate, it is spare;
E, the dissolving of 3,5- diaminobenzoic acids:
3,5- diaminobenzoic acid 37kg are added in water, are stirred evenly, and with 30% sodium hydroxide tune PH=7, obtain 3,5- Diaminobenzoic acid solution.
F, a step coupling reaction:The two contracting reaction solution diazol of product that step (d) is obtained is added to step (e) acquisition Product 3, in 5- diaminobenzoic acid solution, stir evenly.With sodium carbonate tune PH=5-8,15-30 DEG C is warming up to, reaction 3 is small When, a step coupling reaction liquid is obtained, it is spare;
G, aniline -2,5- disulfonic acid diazo-reaction:
In retort plus 400 liters of bottom water, addition 133kg aniline -2,5- disulfonic acid stir evenly.Add in trash ice, temperature Control is at 0 DEG C.30% hydrochloric acid 74kg is added in, then adds 30% sodium nitrite solution 115kg, in 0-10 DEG C of temperature, reaction 2 is small When, reaction process ensures that Congored test paper, in blueness, in micro- blueness after the leaching of KI test paper, reacts to finish and uses sulfamic acid after soaking always Remaining sodium nitrite is removed, it is spare;
H, two step coupling reaction:Product aniline -2,5- disulfonic acid diazol that step (g) is obtained, is added to step f and obtains In the one step coupling reaction liquid of product obtained, stir evenly.With sodium carbonate tune PH=5-8,15-30 DEG C, when reaction 3 is small is warming up to, Coupling reaction liquid is obtained, filtering obtains two step coupling reaction liquid;I.e. digital ink-jet printed active orange dye.
I, coloured light and intensity are adjusted:H steps material is dyed, carries out coloured light further according to coloration result, intensity adjusts.
J, post-process:In the material obtained by i steps add in 30kg activated carbons, stirring 1 it is small when after, be added to separation of solid and liquid It is separated in device, collects filtrate.By filtrate by NF membrane desalination, will be contaminated after electrical conductivity is down to 2000 μ S/cm in feed liquid Material concentration is concentrated into 30%, removes insoluble matter finally by ultrafiltration membrane, is examined with micropore filtering film (diameter 50mm, 0.22 μm of aperture) It is qualification to survey 20min transit doses to reach 500ml.
K, finished product packing:Article obtained by j steps is packed.
Digital ink-jet printed active orange dye prepared by the method for embodiment 1 is 385 kilograms of standard dyes.
Table one:1 digital ink-jet printed reactive orange application performance of embodiment, quality index
The dyestuff and dyestuff preparation method of the present invention is described by specific embodiment.People in the art Member can use for reference the links such as the appropriate feed change of present disclosure, process conditions to realize the present invention, and correlation, which changes, all not to be had There is disengaging present disclosure, all similar replacements and change are it will become apparent to those skilled in the art that all It is deemed to be included within the scope of the present invention.

Claims (7)

1. a kind of orange digital ink-jet printed reactive dye, it is characterised in that:The dyestuff has following structural formula:
In formula:M is-H either alkali metal.
2. orange digital ink-jet printed reactive dye according to claim 1, it is characterised in that:The M is Na.
A kind of 3. preparation method of the orange digital ink-jet printed reactive dye of claim 1 or 2, which is characterized in that the party Method includes the following steps:
(a) dissolving of 2.4- diamino benzene sulfonic acids sodium:
2.4- diamino benzene sulfonic acid sodium is added in water, is stirred to complete molten, is obtained 2.4- diamino benzene sulfonic acid sodium solutions;
(b) a contracting reaction:
At 0-8 DEG C, when making Cyanuric Chloride and 2.4- diamino benzene sulfonic acids sodium reaction 4-6 small, the pH of reactant is controlled in 2-4, Obtain a contracting reaction solution;
(c) two contracting reaction:
In (b) step 1 contracting reaction solution, amion acetic acid is added in, is stirred evenly, temperature is risen to 30-45 DEG C, reaction 5-7 is small When, the pH value of reaction is maintained at 4-6.5, obtains two contracting reaction solutions;
(d) two contracting reaction solution diazo-reaction:
In (c) step 2 contracting reaction solution, hydrochloric acid and sodium nitrite are added in, temperature control is when 0-10 DEG C of reaction 1-3 is small;It obtains Two contracting reaction solution diazols;
(e) dissolving of 3,5- diaminobenzoic acids:
3,5- diaminobenzoic acids are added in water, are stirred evenly, and with 30% sodium hydroxide tune pH=7, obtain 3,5- diaminobenzenes Formic acid solution;
(f) a step coupling reaction:
Two contracting reaction solution diazols are added in 3,5- diaminobenzoic acid solution, are stirred evenly, with sodium carbonate tune pH=5- 8,15-30 DEG C is warming up to, when reaction 3~6 is small, obtains a step coupling reaction liquid;
(g) aniline -2,5- disulfonic acid diazo-reaction:
At 0-10 DEG C, when making aniline -2,5- disulfonic acid, hydrochloric acid and sodium nitrite reaction 1-3 small;
(h) two step coupling reaction:
Aniline -2,5- disulfonic acid diazol is added in the product of step (f) acquisition, stirred evenly, with sodium carbonate tune pH= 5-8, is warming up to 15-30 DEG C, when reaction 3~6 is small, and filtering obtains two step coupling reaction liquid;I.e. digital ink-jet printed reactive orange dye Material.
4. method as claimed in claim 3, it is characterised in that:Further include following steps:
(i) coloured light and intensity are adjusted:
(h) step material is dyed, carries out coloured light further according to coloration result, intensity adjusts.
(j) post-process:
Add in activated carbon in the material obtained by (i) step, when stirring 1 is small after, be added in solid-liquid separator and separated, received Collect filtrate.By filtrate by NF membrane desalination, dye strength in feed liquid is concentrated into after electrical conductivity is down to 2000 μ S/cm 30%, insoluble matter is removed finally by ultrafiltration membrane, is penetrated with micropore filtering film (diameter 50mm, 0.22 μm of aperture) detection 20min It is qualification that amount, which reaches 500ml,.
(k) finished product packing:
Article obtained by (j) step is packed.
5. according to the method described in claim 3, it is characterized in that, (b) step is:Trash ice is added in water, adds in three Polychlorostyrene cyanogen carries out ice and grinds 15 minutes, 2.4- diamino benzene sulfonic acid sodium solutions are then added dropwise, and pH is maintained in 2-4, temperature with sodium acid carbonate Degree keep 0-8 DEG C, reaction 5 it is small when after, obtain a contracting reaction solution.
6. according to the method described in claim 3, it is characterized in that, (d) step is:
Trash ice is added in (c) step 2 contracting reaction solution, temperature is controlled at 0 DEG C, stirred evenly, and after adding in hydrochloric acid solution, is added in Sodium nitrite solution, when 0-10 DEG C of temperature, reaction 2 are small;
Reaction process is in blueness after ensuring Congored test paper leaching always, is finished after the leaching of KI test paper in micro- blueness, reaction with amino sulphur Acid removes remaining sodium nitrite, obtains two contracting reaction solution diazols.
7. according to the method described in claim 3, it is characterized in that, (g) step is:
In water plus aniline -2,5- disulfonic acid and trash ice, temperature are controlled at 0 DEG C, stirred evenly, and after adding in hydrochloric acid solution, are added in Sodium nitrite solution, when 0-10 DEG C of temperature, reaction 2 are small;
Reaction process is in blueness after ensuring Congored test paper leaching always, is finished after the leaching of KI test paper in micro- blueness, reaction with amino sulphur Acid removes remaining sodium nitrite, obtains aniline -2,5- disulfonic acid diazol.
CN201711375795.4A 2017-12-19 2017-12-19 Orange reactive dye suitable for digital ink-jet printing and preparation method thereof Active CN108102419B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112457686A (en) * 2019-09-06 2021-03-09 浙江科永化工有限公司 Yellow reactive dye compound and preparation method and application thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1266869A (en) * 1999-03-11 2000-09-20 西巴特殊化学品控股有限公司 Azo dye, and its preparing process and use
CN1745147A (en) * 2003-02-05 2006-03-08 西巴特殊化学品控股有限公司 Mixtures of reactive dyes and their use
CN104059000A (en) * 2014-07-10 2014-09-24 浙江瑞华化工有限公司 Reactive dye as well as preparation method and application thereof
CN104893357A (en) * 2015-04-13 2015-09-09 华新珍 Yellow reactive dye and preparation method thereof
CN105694530A (en) * 2016-03-17 2016-06-22 浙江瑞华化工有限公司 Orange reactive dye compound, orange reactive dye composition and preparation method and application thereof
CN106833015A (en) * 2017-01-16 2017-06-13 台州市前进化工有限公司 A kind of many chromophoric group dark brown reactive dye of trisazo- and its preparation method and application
CN106833011A (en) * 2016-12-05 2017-06-13 泰兴锦云染料有限公司 A kind of active orange dye and its preparation and application

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1266869A (en) * 1999-03-11 2000-09-20 西巴特殊化学品控股有限公司 Azo dye, and its preparing process and use
CN1745147A (en) * 2003-02-05 2006-03-08 西巴特殊化学品控股有限公司 Mixtures of reactive dyes and their use
CN104059000A (en) * 2014-07-10 2014-09-24 浙江瑞华化工有限公司 Reactive dye as well as preparation method and application thereof
CN104893357A (en) * 2015-04-13 2015-09-09 华新珍 Yellow reactive dye and preparation method thereof
CN105694530A (en) * 2016-03-17 2016-06-22 浙江瑞华化工有限公司 Orange reactive dye compound, orange reactive dye composition and preparation method and application thereof
CN106833011A (en) * 2016-12-05 2017-06-13 泰兴锦云染料有限公司 A kind of active orange dye and its preparation and application
CN106833015A (en) * 2017-01-16 2017-06-13 台州市前进化工有限公司 A kind of many chromophoric group dark brown reactive dye of trisazo- and its preparation method and application

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112457686A (en) * 2019-09-06 2021-03-09 浙江科永化工有限公司 Yellow reactive dye compound and preparation method and application thereof
CN112457686B (en) * 2019-09-06 2022-09-30 浙江科永化工有限公司 Yellow reactive dye compound and preparation method and application thereof

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