Preparation method of 2,4-dinitochloro benzene
A technology of dinitrochlorobenzene and p-nitrochlorobenzene is applied in 2 fields, can solve the problems of long reaction time, poor and poor product quality, and the content can only reach 95%, and achieves simplified production process and reduced reaction time. The effect of shortening and improving efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0007] In the production process of this embodiment, 2,4-dinitrochlorobenzene is obtained through nitration of p-nitrochlorobenzene.
[0008]
[0009] This process operation process, batching ratio: p-nitrochlorobenzene: 98% sulfuric acid: 98% nitric acid=1: 0.9: 0.45, earlier nitric acid and sulfuric acid are mixed in mixed acid pot to make mixed acid, and make it cool. Then add p-nitrochlorobenzene into the reaction pot, cool it to 55-60°C, gradually add the mixed acid, the temperature is controlled at 65-70°C, and drop it in about 4-5 hours, then put the jacket cooling water When the reaction temperature no longer rises, turn on the steam heating, about 1 hour, raise the temperature to 105 ° C, keep warm for 2 hours, take samples to measure the freezing point of the warm product ≥ 47 ° C, when the content is greater than 99%, the nitration reaction is complete, turn off Remove the steam, enter the cooling water, stop stirring, let stand for 1 hour, release the waste nitr...
PUM
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