Fluorine-cation-containing WPU (waterborne polyurethane) and preparation method thereof
A water-based polyurethane and cationic technology, applied in the field of chemical materials, can solve the problems of high fluorine content and high production cost, and achieve the effects of stable performance, improved solvent resistance and mechanical properties, and controllable raw materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0036] Example 1:
[0037] (1) Preparation of fluorine-containing block acrylate copolymer: the molecular weight is 10,000, and the block mass ratio is 9:1. Preparation of the block copolymer of hydroxy-terminated butyl methacrylate and dodecafluoroheptyl methacrylate
[0038] Add 0.498g (0.002mol) initiator α-bromoisobutyric acid (4-hydroxybutanediol ester), 18g (0.127mol) butyl methacrylate monomer, 0.183g (0.00127) in a 100mL four-necked flask mol) Catalyst CuBr, 0.439g (0.00254mol) ligand PMDETA, 7.2g solvent toluene, mix well. The system was evacuated and filled with nitrogen, and the reaction was stirred in an oil bath at 60°C. After 8 hours, add 2g (0.005mol) dodecafluoroheptyl methacrylate, 0.0072g (0.00005mol) CuBr, and 0.0173g (0.0001mol) ligand PMDETA into the flask. After pumping and filling with nitrogen again, it is heated at 80℃. Stirring and reacting under the bath for 12 hours, the reaction is over, after removing the catalyst and solvent, a light yellow solid pr...
Example Embodiment
[0042] Example 2:
[0043] (1) Preparation of fluorine-containing block acrylate copolymer: the molecular weight is 10,000, and the block mass ratio is 7:3. Preparation of hydroxy-terminated butyl methacrylate and hexafluorobutyl methacrylate block copolymer
[0044] Add 0.37g (0.002mol) initiator 1-bromoethylbenzene, 14g (0.0986mol) butyl methacrylate monomer, 0.1415g (0.000986mol) catalyst CuBr, 0.2291g (0.001972mol) in a 100mL four-neck flask ) Ligand tetramethylethylenediamine, 6.02g solvent anisole, mix well. The system was evacuated and filled with nitrogen, and the reaction was stirred in an oil bath at 30°C. After 24 hours, add 6g (0.024mol) hexafluorobutyl methacrylate, 0.0238g (0.00024mol) CuCl, and 0.05578g (0.00048mol) ligand tetramethylethylenediamine into the flask. After pumping and filling with nitrogen again, Stirring and reacting in an oil bath at 50°C for 24 hours, the reaction is over, after removing the catalyst and solvent, a light yellow solid product can b...
Example Embodiment
[0047] Example 3:
[0048] (1) Preparation of fluorinated block acrylate copolymer: molecular weight 5000, block mass ratio of 9:1 preparation of hydroxy-terminated butyl methacrylate and hexafluorobutyl methacrylate block copolymer
[0049] In a 100mL four-neck flask, add 0.724g (0.004mol) of the initiator 0-ethyl bromopropionate, 18g (0.127mol) of butyl methacrylate monomer, 0.183g (0.00127mol) catalyst CuBr, 0.5852g ( 0.00254mol) ligand tris-(N,N-dimethylaminoethyl)amine (Me6 TREN), 7.2g solvent toluene, mix well. The system was evacuated and filled with nitrogen, and the reaction was stirred in an oil bath at 50°C. After 18 hours was added 2g (0.008mol) hexafluorobutyl methacrylate, 0.0115g (0.00008mol) CuBr, 0.03686g (0.00016mol) ligand tri-(N,N-dimethylaminoethyl) Amine (Me6 TREN), after pumping and filling with nitrogen again, continue to stir and react for 8 hours at 120°C in an oil bath. After the reaction is over, after removing the catalyst and solvent, a light yellow ...
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.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap