CN1887969A - Direct date red NGB dye and its prepn - Google Patents
Direct date red NGB dye and its prepn Download PDFInfo
- Publication number
- CN1887969A CN1887969A CN 200610085459 CN200610085459A CN1887969A CN 1887969 A CN1887969 A CN 1887969A CN 200610085459 CN200610085459 CN 200610085459 CN 200610085459 A CN200610085459 A CN 200610085459A CN 1887969 A CN1887969 A CN 1887969A
- Authority
- CN
- China
- Prior art keywords
- ngb
- dye
- red
- acid
- dyestuff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Coloring (AREA)
Abstract
The present invention discloses one kind of date red NGB dye in the structural expression as shown and its preparation process. The date red NGB dye is prepared through the first condensation between 4, 4-diamino anilide as main material and 1, 4-acid at 10-15 deg.c and pH 7.5-8.5 to obtain yellowish red dye monomer; and the subsequent synthesis of the yellowish red dye monomer and gamma acid at 15-20 deg.c and pH 7.5-8.5. The preparation process has no coupling probably generating and entraining carcinogenic substance. The date red NGB dye has high colorfastness and may be used to substitute traditional azo dye.
Description
Technical field
The present invention relates to a kind of direct bordeaux NGB dyestuff and preparation thereof.
Background technology
The direct bordeaux GB of the fifties invention in last century.Structural formula is:
This product is a kind of azoic dyestuff, has the harm of system cancer, feasible production and applying unit employee's healthy very big influence, the kind that existing pass department explicit order stops to produce of being subjected to.
Summary of the invention
For addressing the above problem, the invention provides a kind of purplish red dye well its preparation method that does not have the azo performance.
In order to achieve the above object, a kind of direct bordeaux NGB of the present invention dyestuff, the compound of its structural formula is;
Its preparation method, be by the amino anilide of 4.4-two ' be main raw material and 1-4 acid 10-15 ℃, PH=7.5-8.5 condition under condensation make the inclined to one side red monomer of little yellow, then with γ acid 15-20 ℃, PH=7.5-8.5 condition under syntheticly make purplish red NGB dyestuff.
A kind of direct bordeaux NGB of the present invention dyestuff, its preparation process does not have the coupling process, has prevented to produce and carry secretly because of coupling the generation of carcinostatic substance phenomenon.
Embodiment
Embodiment one, the present invention are prepared as: take by weighing the 15.5 gram amino anilides of 4.4-two ' and 12.3 and restrain H acid red partially monomer dye of the little yellow of condensation system under 10-15 ℃, the condition of PH=7.5-8.5.In the red partially monomer dye of above-mentioned little yellow, add 12 gram γ acid 15-20 ℃, PH=7.5-8.5 condition under syntheticly make purplish red NGB dyestuff.
Claims (2)
1, a kind of direct bordeaux NGB dyestuff, the compound of its structural formula is;
2, according to the described dyestuff of claim 1, its preparation method by the amino anilide of 4.4-two ' be main raw material and 1-4 acid 10-15 ℃, PH=7.5-8.5 condition under condensation make the inclined to one side red monomer of little yellow, then with γ acid 15-20 ℃, PH=7.5-8.5 condition under syntheticly make purplish red NGB dyestuff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085459 CN1887969A (en) | 2006-06-19 | 2006-06-19 | Direct date red NGB dye and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085459 CN1887969A (en) | 2006-06-19 | 2006-06-19 | Direct date red NGB dye and its prepn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1887969A true CN1887969A (en) | 2007-01-03 |
Family
ID=37577254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610085459 Pending CN1887969A (en) | 2006-06-19 | 2006-06-19 | Direct date red NGB dye and its prepn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1887969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421750A (en) * | 2009-05-14 | 2012-04-18 | 科莱恩金融(Bvi)有限公司 | Bisazo compounds |
-
2006
- 2006-06-19 CN CN 200610085459 patent/CN1887969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421750A (en) * | 2009-05-14 | 2012-04-18 | 科莱恩金融(Bvi)有限公司 | Bisazo compounds |
| CN102421750B (en) * | 2009-05-14 | 2014-11-05 | 科莱恩金融(Bvi)有限公司 | Bisazo compounds |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108558884B (en) | Synthesis method of folic acid | |
| CN102630923A (en) | Method for preparing soy sauce | |
| UA100367C2 (en) | METHOD OF PREPARATION OF MEMANTINE AND ITS HYDROCHLORIDE | |
| CN102977227A (en) | Method for preparing chitosan-like efficient flocculant | |
| CN102150726A (en) | Eucommia ulmoides red tea and preparation method thereof | |
| CN101268832A (en) | Health product with function of accelerating assimilation and method for preparing the same | |
| CN1887969A (en) | Direct date red NGB dye and its prepn | |
| CN103141201B (en) | Good-quality and high-yield production method of fruit and seed medicinal plants | |
| CN102442851A (en) | Method for preparing Hongfeng apricot mature tree base fertilizer | |
| CN107353320B (en) | The method of alkaline extraction high efficiency extraction plant selenoprotein | |
| CN111073933A (en) | Preparation method of protein peptide selenium chelate suitable for ruminants | |
| CN104341325B (en) | Unsaturated ester and preparation method thereof | |
| CN1861691A (en) | Direct blackish green NB dye and its preparation | |
| CN101633589A (en) | Nitrogenous fertilizer synergist | |
| CN101643799B (en) | Method for preparing formaldehyde-free retanning agent | |
| CN110128294A (en) | A kind of chloro- 5- nitrobenzonitrile ammonolysis technique of 2- | |
| CN101849677A (en) | Chitosan oligosaccharide chelating ferrous and preparation method thereof | |
| CN114982932B (en) | Caramel type reaction spice and preparation method thereof | |
| CN1861692A (en) | Direct dark brown NM dye and its preparation | |
| WO2009025238A1 (en) | Method for producing quinazoline derivative | |
| CN201376065Y (en) | Assembling line machine of code nails and chain nails, with functions of groove leveling and preheating | |
| CN1660777A (en) | Technique for producing Gamma amino butyric acid | |
| CN104046055B (en) | A kind of hair reactive fluorescent dye, preparations and applicatio | |
| CN106699576A (en) | Method for synthesizing methoxyphenamine hydrochloride | |
| CN111137967A (en) | Water quality modifier for improving physique of write carp and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |