CN105238095A - Preparation method of pigment orange 16 - Google Patents
Preparation method of pigment orange 16 Download PDFInfo
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- CN105238095A CN105238095A CN201510661675.5A CN201510661675A CN105238095A CN 105238095 A CN105238095 A CN 105238095A CN 201510661675 A CN201510661675 A CN 201510661675A CN 105238095 A CN105238095 A CN 105238095A
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- pigment orange
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Abstract
The invention relates to a preparation method of a pigment orange 16 and belongs to the field of chemical engineering. The preparation method mainly comprises diazo salt preparation, diazotization, filtration and drying. The preparation method of the pigment orange 16 changes a low temperature reaction in the traditional technology and accelerates a diazotization process by a heating reaction. The prepared diazo salt can produce a part of hydrolysis and but through immediate use of a dispersant, particle deposition and coacervation are avoided and too dark color is avoided. The heating reaction process changes performances of the pigment orange 16 obtained by the traditional low temperature reaction process so that pigment orange 16 firmness is greatly improved.
Description
Technical field
The present invention relates to a kind of preparation method of pigment orange 16, belong to chemical field.
Background technology
Pigment orange 18 is mainly used in ink, because firmness is poor, is generally used for the packaging ink of high transparency, low cost.Contriver finds, in existing preparation technology, pigment orange 16 generally chooses the temperature of reaction of 0 to 5 degrees Celsius in diazotization reaction, and like this, diazonium salt is facile hydrolysis not, ensures finished color.Then, result also in the poor problem of firmness like this.
Summary of the invention
The present invention wants technical solution problem to be: the shortcoming overcoming above-mentioned technology, provides a kind of preparation method of pigment orange 16 of strong firmness.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of preparation method of pigment orange 16, comprises the following steps:
(1) 3,3 '-dimethoxy benzidine, hydrochloric acid and water are pulled an oar;
(2) add Sodium Nitrite and fully stir, forming diazonium salt solution;
(3), after the mixing of sodium hydroxide solution, water and acetyl-acetanilide also fully being stirred, interpolation acetum, fully stirs to pH value between 5 to 6;
(4) solution of step (2) is added in the solution of step (3) carries out coupling, and fully stir, heat simultaneously, make mixeding liquid temperature maintain 85 to 90 degrees Celsius;
(5) add emulsifying agent and dispersion agent, and holding temperature is at 30 to 45 degrees Celsius; Abundant stirring;
(6) pigment orange 16 is namely obtained after filtration, washing, drying.
Such scheme further improves and is: in step (3), and the acetum concentration used is 15.5%.
Such scheme further improves and is: in described step (2), uses urea to destroy excessive Sodium Nitrite.
Such scheme further improves and is: in described step (1), and concentration of hydrochloric acid is 40%.
The preparation method of pigment orange 16 provided by the invention, is changing the low-temp reaction in traditional technology, uses reacting by heating to accelerate diazo process, although can generating portion be hydrolyzed by diazonium salt, pass through, follow-up horse back adds precipitation and the cohesion that dispersion agent stops particle, avoids color excessively dark.And reacting by heating process, change Conventional cryogenic reaction obtain the performance of pigment orange 16, its firmness is increased greatly.
Embodiment
Embodiment
The preparation method of a kind of pigment orange 16 that the present embodiment provides, comprises the following steps:
(1) 3,3 '-dimethoxy benzidine, hydrochloric acid and water are pulled an oar;
(2) add Sodium Nitrite and fully stir, forming diazonium salt solution;
(3), after the mixing of sodium hydroxide solution, water and acetyl-acetanilide also fully being stirred, interpolation acetum, fully stirs to pH value between 5 to 6;
(4) solution of step (2) is added in the solution of step (3) carries out coupling, and fully stir, heat simultaneously, make mixeding liquid temperature maintain 85 to 90 degrees Celsius;
(5) add emulsifying agent and dispersion agent, and holding temperature is at 30 to 45 degrees Celsius; Abundant stirring;
(6) pigment orange 16 is namely obtained after filtration, washing, drying.
In step (3), the acetum concentration used is 15.5%.
In step (2), urea is used to destroy excessive Sodium Nitrite.
In step (1), concentration of hydrochloric acid is 40%.
The present invention is not limited to the concrete technical scheme of above-described embodiment, and in addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacing and being formed, and are the protection domain of application claims.
Claims (4)
1. a preparation method for pigment orange 16, is characterized in that, comprises the following steps:
(1) 3,3 '-dimethoxy benzidine, hydrochloric acid and water are pulled an oar;
(2) add Sodium Nitrite and fully stir, forming diazonium salt solution;
(3), after the mixing of sodium hydroxide solution, water and acetyl-acetanilide also fully being stirred, interpolation acetum, fully stirs to pH value between 5 to 6;
(4) solution of step (2) is added in the solution of step (3) carries out coupling, and fully stir, heat simultaneously, make mixeding liquid temperature maintain 85 to 90 degrees Celsius;
(5) add emulsifying agent and dispersion agent, and holding temperature is at 30 to 45 degrees Celsius; Abundant stirring;
(6) pigment orange 16 is namely obtained after filtration, washing, drying.
2. the preparation method of pigment orange 16 as claimed in claim 1, it is characterized in that: in step (3), the acetum concentration used is 15.5%.
3. the preparation method of pigment orange 16 as claimed in claim 1, is characterized in that: in described step (2), uses urea to destroy excessive Sodium Nitrite.
4. the preparation method of pigment orange 16 as claimed in claim 1, it is characterized in that: in described step (1), concentration of hydrochloric acid is 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661675.5A CN105238095A (en) | 2015-10-15 | 2015-10-15 | Preparation method of pigment orange 16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661675.5A CN105238095A (en) | 2015-10-15 | 2015-10-15 | Preparation method of pigment orange 16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105238095A true CN105238095A (en) | 2016-01-13 |
Family
ID=55035933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510661675.5A Pending CN105238095A (en) | 2015-10-15 | 2015-10-15 | Preparation method of pigment orange 16 |
Country Status (1)
| Country | Link |
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| CN (1) | CN105238095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591409A (en) * | 2019-09-21 | 2019-12-20 | 龙口佳源颜料有限公司 | Preparation method of pigment orange 16 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5904878A (en) * | 1997-05-14 | 1999-05-18 | Sun Chemical Corporation | Fluorescent orange azo pigments |
| CN1246393C (en) * | 2000-11-17 | 2006-03-22 | 西巴特殊化学品控股有限公司 | Method of improving pigment fluorescence |
-
2015
- 2015-10-15 CN CN201510661675.5A patent/CN105238095A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5904878A (en) * | 1997-05-14 | 1999-05-18 | Sun Chemical Corporation | Fluorescent orange azo pigments |
| CN1246393C (en) * | 2000-11-17 | 2006-03-22 | 西巴特殊化学品控股有限公司 | Method of improving pigment fluorescence |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591409A (en) * | 2019-09-21 | 2019-12-20 | 龙口佳源颜料有限公司 | Preparation method of pigment orange 16 |
| CN110591409B (en) * | 2019-09-21 | 2021-05-28 | 龙口佳源颜料有限公司 | Preparation method of pigment orange 16 |
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Application publication date: 20160113 |
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| RJ01 | Rejection of invention patent application after publication |