Continuous Production System of Nano Disperse Dyes
A nano-dispersion and production system technology, applied in the direction of organic dyes, azo dyes, monoazo dyes, etc., can solve the problems of decreased dye productivity, difficulty in uniform mixing of materials, and large particle size of dyes, so as to improve the conversion rate , Avoid decomposition, precise temperature control effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0082] Example 1 Continuous production of an azo nanodisperse dye
[0083] In this embodiment, the diazonium component includes p-nitroaniline and nitrite, the diazonium reagent includes hydrochloric acid, and the coupling component includes N-ethyl-N-cyanoethylaniline and acetic acid.
[0084] The diazotization reaction process is as follows: the mixed solution of p-nitroaniline and nitrite is premixed with the hydrochloric acid solution through the premixing component, such as figure 2 As shown in the figure, it is then continuously fed into the spiral coil reactor through the pipeline to obtain the diazonium salt solution or suspension. The diazotization reaction is carried out at -5 °C to 30 °C, preferably 5 °C to 10 °C. The molar ratio of hydrogen ions of hydrochloric acid to p-nitroaniline in the diazotization reaction is Preferably 2.8:1, the molar ratio of sodium nitrite to p-nitroaniline is 1-2:1, preferably 1.07:1, and the feed flow rate is 50-300 mL / min, preferab...
example 2
[0094] Example 2 A kind of continuous preparation method of nano-scale disperse dyes
[0095] In this embodiment, the diazonium component includes p-nitroaniline and nitrite, the diazonium reagent includes hydrochloric acid, and the coupling component includes N-ethyl-N-cyanoethylaniline, acetic acid, and Dispersant.
[0096] A continuous preparation method of nano disperse dyes using supergravity is characterized in that, the method comprises the steps:
[0097] The diazotization reaction process is as follows: the mixed solution of p-nitroaniline and nitrite is premixed with the hydrochloric acid solution through the premixing component, such as figure 2 As shown in the figure, it is then continuously fed into the spiral coil reactor through the pipeline to obtain the diazonium salt solution or suspension. The diazotization reaction is carried out at -5 °C to 30 °C, preferably 5 °C to 10 °C. The molar ratio of hydrogen ions of hydrochloric acid to p-nitroaniline in the di...
example 3
[0101] Example 3 A kind of continuous preparation method of nano-scale disperse dyes
[0102] In this embodiment, the diazonium component includes p-nitroaniline and nitrite, the diazonium reagent includes hydrochloric acid, and the coupling component includes N-ethyl-N-cyanoethylaniline, acetic acid, and Dispersant.
[0103] A continuous preparation method of nano disperse dyes using supergravity is characterized in that, the method comprises the steps:
[0104] The diazotization reaction process is as follows: the mixed solution of p-nitroaniline and nitrite is premixed with the hydrochloric acid solution through the premixing component, such as figure 2 As shown in the figure, it is then continuously fed into the spiral coil reactor through the pipeline to obtain the diazonium salt solution or suspension, and the diazotization reaction is carried out at -5 °C to +30 °C, preferably 5 °C to 10 °C. The molar ratio of the hydrogen ion of hydrochloric acid to p-nitroaniline i...
PUM
Property | Measurement | Unit |
---|---|---|
angle | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com