CN102719114A - Method for preparing permanent yellow G - Google Patents
Method for preparing permanent yellow G Download PDFInfo
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- CN102719114A CN102719114A CN2012101690344A CN201210169034A CN102719114A CN 102719114 A CN102719114 A CN 102719114A CN 2012101690344 A CN2012101690344 A CN 2012101690344A CN 201210169034 A CN201210169034 A CN 201210169034A CN 102719114 A CN102719114 A CN 102719114A
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- coupling
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- coupling component
- permanent yellow
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Abstract
The invention discloses a method for preparing permanent yellow G. The method comprises the following steps of: beating a diazo component, hydrochloric acid and water, adding ice, reducing the temperature to 0 DEG C, adding a solution of sodium nitrite, stirring for 1 hour, adding a small amount of argil, stirring for 10 minutes, and filtering for later use; dissolving a coupling component in a dissolving kettle until the coupling component is transparent, putting into a coupling kettle, adjusting the temperature and volume, adding a dilute solution of acetic acid, performing acid precipitation until the PH value is 6.5 to 7, adding a buffering agent into a spare material obtained after filtration and the coupling component which is subjected to acid precipitation, coupling, and after-treating; and entering a filter press and washing, drying and grinding a filter cake, and packaging to obtain a product. By the method for preparing the permanent yellow G, the production cost is effectively reduced; the chemical oxygen demand (COD) of generated wastewater is low; and the method is environment-friendly and energy-saving.
Description
Technical field
The present invention relates to a kind of preparation method of pigment, specifically, relate to the preparation method of a kind of permanent yellow G.
Background technology
At present the production technique of permanent yellow G generally is to prepare through technologies such as mix, mixing, pulverizing, classification, outer dopings, and this type preparation method cost is higher and pollute comparatively serious.
Summary of the invention
Technical problem to be solved by this invention provide a kind of when solving preparation permanent yellow G cost than the high pollution method for preparing permanent yellow G of serious problems comparatively.
The present invention solves the scheme that its technical problem takes: a kind of permanent yellow G the preparation method, this method may further comprise the steps:
A. 0 degree that is cooled on the rocks after diazo component, hydrochloric acid, water being pulled an oar 20-35 minute together;
B. add sodium nitrite solution, stir after 1 hour, add a small amount of carclazyte again, stirred 10 minutes, filter then give over to subsequent use;
C. the coupling component is put into the coupling still after the dissolution kettle dissolving is transparent, adjustment temperature and volume;
D. the rare acetum of the adding of the coupling component in step c carries out acid out to PH=6.5-7;
E. with carrying out coupling behind the coupling component adding buffer reagent through acid out described in subsequent use material after filtering described in the step b and the steps d, coupling finishes, and carries out post processing modes such as heat treated or interpolation auxiliary agent;
F. the back entering pressure filter that disposes washs, and with the shape of claying into power after the oven dry of gained filter cake, is packaged to be product then.
As preferably, the diazo component among the said step a is by 3,3'-dichlorobenzidine (DCB), water, hydrochloric acid, Sodium Nitrite, gac and riodine preparation.
As preferably, the coupling component among the said step c is by acetyl-acetanilide, yellow soda ash, water and acetic acid preparation and prepare, and the coupled reaction temperature is 10 ℃-20 ℃, and the volume of coupling component is 20 times of coupling component.
As preferably, the pressure of pressure filter is 0.3-0.6MPa, and time of filter pressing is 3-6 hour.
Compared with prior art, usefulness of the present invention is: the preparation method of this permanent yellow G has reduced production cost effectively, and the waste water CDO of generation is low, and environmental protection is energy-conservation again.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is preparing method's process flow sheet of permanent yellow G of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing and embodiment: a kind of permanent yellow G as shown in Figure 1 the preparation method; This method may further comprise the steps: 0 degree that is cooled on the rocks after diazo component, hydrochloric acid, water were pulled an oar 20-35 minute together; Said diazo component is by 3, and 3'-dichlorobenzidine (DCB), water, hydrochloric acid, Sodium Nitrite, gac and riodine preparation add sodium nitrite solution; Stir after 1 hour; Add a small amount of carclazyte again, stirred 10 minutes, filter then give over to subsequent use; The coupling component is put into the coupling still after the dissolution kettle dissolving is transparent, stating the coupling component is to be prepared by acetyl-acetanilide, yellow soda ash, water and acetic acid preparation.Adjustment temperature temperature to 10 ℃-20 ℃ of volumes with the coupling component are 20 times of coupling components, add rare acetum in the coupling component after dissolving and carry out acid out to PH=6.5-7; Add buffer reagent in subsequent use material after filtration and the process coupling component of acid out and carry out coupling, coupling finishes, and carries out post processing modes such as heat treated or interpolation auxiliary agent; The back entering pressure filter that disposes washs, and the pressure of pressure filter is 0.3-0.6MPa, and time of filter pressing is 3-6 hour, with the shape of claying into power after the oven dry of gained filter cake, is packaged to be product then.The preparation method of this permanent yellow G has reduced production cost effectively, and the waste water CDO of generation is low, and environmental protection is energy-conservation again.
It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
- A permanent yellow G the preparation method, it is characterized in that: this method may further comprise the steps:A. 0 degree that is cooled on the rocks after diazo component, hydrochloric acid, water being pulled an oar 20-35 minute together;B. add sodium nitrite solution, stir after 1 hour, add a small amount of carclazyte again, stirred 10 minutes, filter then give over to subsequent use;C. the coupling component is dissolved in dissolution kettle and puts into the coupling still after transparent, adjustment temperature and volume;D. the rare acetum of the adding of the coupling component in step c carries out acid out to PH=6.5-7;E. with carrying out coupling behind the coupling component adding buffer reagent through acid out described in subsequent use material after filtering described in the step b and the steps d, coupling finishes, and heat-treats;F. the back entering pressure filter that disposes washs, and with the shape of claying into power after the oven dry of gained filter cake, is packaged to be product then.
- 2. the preparation method of permanent yellow G according to claim 1 is characterized in that: the diazo component among the said step a is by 3,3'-dichlorobenzidine (DCB), water, hydrochloric acid, Sodium Nitrite, gac and riodine preparation.
- 3. the preparation method of permanent yellow G according to claim 1; It is characterized in that: the coupling component among the said step c is by acetyl-acetanilide, yellow soda ash, water and acetic acid preparation; The coupled reaction temperature is 10 ℃-20 ℃, and the volume of coupling component is 20 times of coupling component.
- 4. according to the preparation method of the described permanent yellow G of claim 1, it is characterized in that: the pressure of press filtration is 0.3MPa-0.6MPa among the said step f, and time of filter pressing is 3h-6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101690344A CN102719114A (en) | 2012-05-29 | 2012-05-29 | Method for preparing permanent yellow G |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101690344A CN102719114A (en) | 2012-05-29 | 2012-05-29 | Method for preparing permanent yellow G |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102719114A true CN102719114A (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101690344A Pending CN102719114A (en) | 2012-05-29 | 2012-05-29 | Method for preparing permanent yellow G |
Country Status (1)
| Country | Link |
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| CN (1) | CN102719114A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387753A (en) * | 2013-07-31 | 2013-11-13 | 瑞安宝源化工有限公司 | Preparation process of benzidine yellow |
| CN103396678A (en) * | 2013-07-31 | 2013-11-20 | 瑞安宝源化工有限公司 | Process for preparing heavy nitrogen solution of permanent yellow G |
| CN104403349A (en) * | 2014-11-29 | 2015-03-11 | 嘉兴科隆化工有限公司 | Industrial production method of pigment yellow 97 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB512607A (en) * | 1937-12-09 | 1939-09-21 | Tootal Broadhurst Lee Co Ltd | Improvements in production of organic pigments |
| US3759733A (en) * | 1970-07-16 | 1973-09-18 | Ciba Geigy Ag | Pigment compositions |
| CN87100778A (en) * | 1987-02-19 | 1988-08-31 | 大连染料厂 | A kind of azoic diphenylamine yellow dispering dye |
| CN1140733A (en) * | 1995-07-12 | 1997-01-22 | 西巴-盖尔基股份公司 | Production of pigments |
-
2012
- 2012-05-29 CN CN2012101690344A patent/CN102719114A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB512607A (en) * | 1937-12-09 | 1939-09-21 | Tootal Broadhurst Lee Co Ltd | Improvements in production of organic pigments |
| US3759733A (en) * | 1970-07-16 | 1973-09-18 | Ciba Geigy Ag | Pigment compositions |
| CN87100778A (en) * | 1987-02-19 | 1988-08-31 | 大连染料厂 | A kind of azoic diphenylamine yellow dispering dye |
| CN1140733A (en) * | 1995-07-12 | 1997-01-22 | 西巴-盖尔基股份公司 | Production of pigments |
Non-Patent Citations (2)
| Title |
|---|
| 陈均志: "《精细化工原材料及中间体手册—涂料》", 31 January 2005, article "《精细化工原材料及中间体手册—涂料》", pages: 383-385 * |
| 陈均志: "《精细化工原材料及中间体手册—涂料》", 31 January 2005, 化学工业出版社化学与应用化学出版中心 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387753A (en) * | 2013-07-31 | 2013-11-13 | 瑞安宝源化工有限公司 | Preparation process of benzidine yellow |
| CN103396678A (en) * | 2013-07-31 | 2013-11-20 | 瑞安宝源化工有限公司 | Process for preparing heavy nitrogen solution of permanent yellow G |
| CN104403349A (en) * | 2014-11-29 | 2015-03-11 | 嘉兴科隆化工有限公司 | Industrial production method of pigment yellow 97 |
| CN104403349B (en) * | 2014-11-29 | 2017-07-21 | 嘉兴科隆化工有限公司 | A kind of industrialized preparing process of pigment yellow 97 |
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Application publication date: 20121010 |