One-component normal-temperature self-crosslinked fluorinated polyurethane coating material and preparation method thereof
A polyurethane coating and self-crosslinking technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of incomplete reaction, high price, environmental hazards, and difficulty in wide application, and achieve stable product performance and good solubility effect of ability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0030] Example 1:
[0031] Preparation of side chain fluorine-containing polyether glycol with 6.2% fluorine-containing formula III
[0032] 0.072 mol of 2-(tridecafluorohexyl) ethyl glycidyl ether and 1.128 mol of n-butyl glycidyl ether were dissolved in 50 mL of dichloromethane to form a dichloromethane mixed solution.
[0033] Then, in the 500mL kettle, after replacing the air in the kettle with pure nitrogen, the temperature was reduced to 0°C, 2.4mol tetrahydrofuran, 100mL dichloromethane, 0.072mol boron trifluoride ether and 0.216mol ethylene glycol were added, and the temperature was lowered to 0°C and stirred After 20 minutes and maintaining this temperature, the above-prepared dichloromethane mixed solution was added dropwise, and the drop was controlled within 2 hours. Maintain at 0°C and react for 18h. Add 20ml of deionized water to terminate the reaction, distill off the solvent, and neutralize to neutral with sodium carbonate solution. Add 100mL deionized water to was...
Example Embodiment
[0037] Example 2:
[0038] Preparation of 12.2% fluorine-containing side chain fluorine-containing polyether glycol with structural formula IV
[0039] 0.157 mol of 2-(tridecafluorohexyl) ethyl glycidyl ether and 1.043 mol of n-butyl glycidyl ether were dissolved in 50 mL of dichloromethane to form a dichloromethane mixed solution.
[0040] In a 500mL kettle equipped with a stirrer, after replacing the air in the kettle with pure nitrogen, the temperature was lowered to 0°C, 100mL of dichloromethane was added as a solvent, 2.4mol of tetrahydrofuran, 0.072mol of boron trifluoride ether and 0.216mol of ethylenedi were added alcohol. The methylene chloride mixed solution prepared above was added dropwise, and the dropwise addition was controlled to be completed within 5 hours. Keep at 0°C, react for 18 hours, add 60ml deionized water to terminate the reaction, distill off the solvent, and neutralize to neutral with sodium bicarbonate solution. Add 200 mL of deionized water, stir and ...
Example Embodiment
[0044] Example 3:
[0045] Preparation of side chain fluorine-containing polyether glycol with structural formula Ⅲ containing 17.9% fluorine
[0046] Dissolve 0.255 mol 2-(tridecafluorohexyl) ethyl glycidyl ether and 0.945 mol butyl glycidyl ether in 50 mL of dichloromethane to form a dichloromethane mixed solution.
[0047] In a 500 mL kettle equipped with a stirrer, after replacing the air in the kettle with pure nitrogen, the temperature was lowered to 0°C and 2.4 mol tetrahydrofuran, 0.072 mol boron trifluoride ether and 0.216 mol 1,2-propanediol were added. The methylene chloride mixed solution prepared above was added dropwise, and the dropwise addition was controlled to be completed within 5 hours. Keep at 0°C, react for 18 hours, add 20ml deionized water to terminate the reaction, distill off the solvent, and neutralize to neutral with sodium bicarbonate solution. Add 250 mL of deionized water, stir and wash for 20 minutes, stand still for layering, wash the oil phase agai...
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