Refining method of terephthalaldehyde
A technology of terephthalaldehyde and purification method, applied in the field of terephthalaldehyde purification and polymerization grade terephthalaldehyde, can solve the problems of limitation, low yield, low terephthalaldehyde yield and the like, and achieve product purity The effect of high, high yield and simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0023] Put 10 g of crude terephthalaldehyde in an evaporator, and evaporate at -70KPa, 40°C. Then place the evaporated material in hot water at 70°C, the quality of the hot water is 20 times the mass of the terephthalaldehyde material, fully stir and dissolve, then filter, cool to 20°C, and terephthalaldehyde begins to crystallize during the cooling process , and then after standing for 5 hours, after the terephthalaldehyde crystallization is completed, filter to obtain the terephthalaldehyde product, and dry the filtered terephthalaldehyde product at 60°C for 20 hours to obtain the refined terephthalaldehyde product . The total yield of the refined terephthalaldehyde product is 92.6%, and the purity is 99.6%.
Embodiment 2
[0025] Put 10 g of crude terephthalaldehyde in an evaporator, and evaporate it at -90KPa, 20°C. Then place the evaporated material in hot water at 50°C, the quality of the hot water is 30 times the mass of the terephthalaldehyde material, fully stir and dissolve, then filter, cool to 20°C, and terephthalaldehyde begins to crystallize during the cooling process , and then after standing for 5 hours, after the terephthalaldehyde crystallization is completed, filter to obtain the terephthalaldehyde product, and dry the filtered terephthalaldehyde product at 60°C for 20 hours to obtain the refined terephthalaldehyde product . The total yield of the refined terephthalaldehyde product is 91.3%, and the purity is 99.4%.
Embodiment 3
[0027] Put 10 g of crude terephthalaldehyde in an evaporator, and evaporate at -30KPa, 50°C. Then place the evaporated material in hot water at 90°C, the quality of the hot water is 10 times the mass of the terephthalaldehyde material, fully stir and dissolve, then filter, cool to 40°C, and terephthalaldehyde begins to crystallize during the cooling process , and then after standing for 5 hours, after the terephthalaldehyde crystallization is completed, filter to obtain the terephthalaldehyde product, and dry the filtered terephthalaldehyde product at 60°C for 20 hours to obtain the refined terephthalaldehyde product . The total yield of the refined terephthalaldehyde product is 93.4%, and the purity is 99.7%.
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