Liquid oxygen compatible phosphorus-containing epoxy resin system and preparation method thereof
An epoxy resin system, liquid oxygen technology, which is applied in chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry, etc., can solve problems such as damage to epoxy resin properties, and achieve easy operation and preparation. Simple and feasible method
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0026] Example 1
[0027] In a 250ml three-necked flask equipped with a stirring paddle, a reflux condenser and a nitrogen port, add 32.4g (0.1mol) of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide and 92.5g (1mol) epichlorohydrin, then add 0.01mol tetrabutylammonium bromide, under nitrogen protection, stir and react in an oil bath at 65°C for 6h, until the solution is clear and transparent ; Cool down to 50°C, add 20wt% sodium hydroxide (8g) solution dropwise with a constant pressure dropping funnel, the dropwise addition time is 1h, the reaction is 6h, the solution is clear and transparent; it is cooled to room temperature, and the organic solvent dichloromethane is used. Extraction, and wash with deionized water for 3 times to remove sodium chloride, until the aqueous phase is free of chloride ions (using silver nitrate solution to check); the final product is rotary distilled at 100 ° C to remove excess epichlorohydrin, organic solvent an...
Example Embodiment
[0030] Example 2
[0031] In a 250ml three-necked flask equipped with a stirring paddle, a reflux condenser and a nitrogen port, add 32.4g (0.1mol) of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide and 92.5g (1mol) epichlorohydrin, then add 0.005mol of tetrabutylammonium bromide, under nitrogen protection, stir and react in an oil bath at 65°C for 6h, until the solution is clear and transparent ; Cool down to 50°C, add 20wt% sodium hydroxide (8g) solution dropwise with a constant pressure dropping funnel, the dropwise addition time is 1h, the reaction is 6h, the solution is clear and transparent; it is cooled to room temperature, and the organic solvent dichloromethane is used. Extraction, and wash with deionized water for 3 times to remove sodium chloride, until the aqueous phase is free of chloride ions (using silver nitrate solution to check); the final product is rotary distilled at 100 ° C to remove excess epichlorohydrin, organic solven...
Example Embodiment
[0032] Example 3
[0033] In a 250ml three-necked flask equipped with a stirring paddle, a reflux condenser and a nitrogen port, add 32.4g (0.1mol) of 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide and 92.5g (1mol) epichlorohydrin, then add 0.005mol of tetrabutylammonium bromide, under nitrogen protection, stir and react in an oil bath at 65°C for 6h, until the solution is clear and transparent ; Cool to 50°C, add 28wt% sodium hydroxide (8g) solution dropwise using a constant pressure dropping funnel, the dropwise addition time is 1h, the reaction is 6h, the solution is clear and transparent; it is cooled to room temperature, and the organic solvent dichloromethane is used. Extraction, and wash with deionized water for 3 times to remove sodium chloride, until the aqueous phase is free of chloride ions (using silver nitrate solution to check); the final product is rotary distilled at 100 ° C to remove excess epichlorohydrin, organic solvent an...
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap