Clean production method for preparing liquid antioxidant
A production method and clean production technology, which are applied in the directions of reaction preparation of ester groups and hydroxyl groups, organic chemistry, chemical recycling, etc., can solve problems such as affecting the production capacity of equipment, long post-processing time, unfavorable environmental protection, etc., and achieve the protection of water resources and environment. , good color, the effect of reducing the risk of running material
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] In a 500ml four-neck flask equipped with electric stirring, thermometer, vacuum tube, condenser, and cold trap, add 100 grams (0.342 moles) of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid methyl ester (3, 5-methyl ester), 66.8 grams (0.513 moles) of iso-octanol, 0.1 grams of dibutyltin oxide, vacuumed to below 10mmHg, filled with nitrogen to normal pressure, heated to 140-150°C, and adjusted to -0.07-- 0.08MPa, the methanol generated in the reaction process is continuously drawn out, collected in the cold trap, and the reaction is maintained for 30 minutes under this condition, the temperature is raised to 160-170°C, and the vacuum degree is kept at -0.07--0.08MPa. The methanol is continuously extracted and collected in the cold trap. Under this condition, the reaction is maintained for 30 minutes, the temperature is raised to 180°C, and the vacuum degree is maintained at -0.07--0.08MPa. The methanol generated during the reaction process is continuously extracted and ...
Embodiment 2
[0022] In a 500ml four-neck flask equipped with electric stirring, thermometer, vacuum tube, condenser, and cold trap, add 100 grams (0.342 moles) of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid methyl ester (3, 5-methyl ester), 53.4 grams (0.410 moles) of isooctyl alcohol, 0.2 grams of aluminum triisopropoxide, vacuumed to below 10mmHg, filled with nitrogen to normal pressure, heated to 140-150°C, and adjusted to -0.07-- 0.08MPa, the methanol generated in the reaction process is continuously drawn out, collected in the cold trap, and the reaction is maintained for 30 minutes under this condition, the temperature is raised to 160-170°C, and the vacuum degree is kept at -0.07--0.08MPa. The methanol is continuously extracted and collected in the cold trap. Under this condition, the reaction is maintained for 30 minutes, the temperature is raised to 180°C, and the vacuum degree is maintained at -0.07--0.08MPa. The methanol generated during the reaction process is continuously e...
Embodiment 3
[0024] In a 500ml four-neck flask equipped with electric stirring, thermometer, vacuum tube, condenser, and cold trap, add 100 grams (0.342 moles) of 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid methyl ester (3, 5-methyl ester), 55.7 grams (0.427 moles) of isooctyl alcohol, 0.5 grams of dibutyltin oxide, vacuumed to below 10mmHg, filled with nitrogen to normal pressure, heated to 140-150°C, and adjusted to -0.07-- 0.08MPa, the methanol generated in the reaction process is continuously drawn out, collected in the cold trap, and the reaction is maintained for 30 minutes under this condition, the temperature is raised to 160-170°C, and the vacuum degree is kept at -0.07--0.08MPa. The methanol is continuously extracted and collected in the cold trap. Under this condition, the reaction is maintained for 30 minutes, the temperature is raised to 180°C, and the vacuum degree is maintained at -0.07--0.08MPa. The methanol generated during the reaction process is continuously extracted...
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