Redispersable pH-sensitive cation polymer hydrogel sub-micrometer grain and its preparation method
A technology of hydrogel submicron particles and cationic polymers, applied in the field of pH-sensitive hydrogel polymer materials, to achieve the effect of small particle size change and simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0014] 1.8848g methacrylic acid-N, N-dimethylaminoethyl ester, 0.062g tetraethylene glycol-bismethacrylate, 0.973g relative molecular mass are 2080 polyethylene glycol monomethyl ether acrylate and 0.04g Azobisisobutyronitrile and 70mL of acetonitrile were added to a 100mL four-necked bottle, nitrogen gas was passed for 20min, and the reaction was carried out under reflux at 80°C for 6h; 10mL of twice distilled water was added dropwise while distilling acetonitrile under normal pressure, and the dispersion was cooled naturally after the distillation was completed, and then After the cooled dispersion was centrifuged at 3000rpm for 15min, the supernatant was put into a dialysis bag with a cut-off molecular mass of 8000-14400 and dialyzed for 72h. The dialyzed dispersion was freeze-dried to obtain a white powder product.
[0015] The submicron particle size of the cationic polymer hydrogel prepared in this example is 295nm, and the particle size after fully swelling in pure water...
Embodiment 2
[0017] 2.2193g methacrylic acid-N, N-dimethylaminoethyl ester, 0.0888g tetraethylene glycol-bismethacrylate, 0.5918g relative molecular mass is 2080 polyethylene glycol monomethyl ether acrylate and 0.0592g Azobisisobutyronitrile and 70mL of acetonitrile were added to a 100mL four-necked bottle, nitrogen gas was passed for 20min, and the reaction was carried out under reflux at 80°C for 6h; 10mL of twice distilled water was added dropwise while distilling acetonitrile under normal pressure, and the dispersion was cooled naturally after the distillation was completed, and then After the cooled dispersion was centrifuged at 3000rpm for 15min, the supernatant was put into a dialysis bag with a cut-off molecular mass of 8000-14400 and dialyzed for 72h, and the dialyzed dispersion was freeze-dried to obtain a white powder product.
Embodiment 3
[0019] 0.7398g methacrylic acid-N, N-dimethylaminoethyl ester, 0.0592g tetraethylene glycol-bismethacrylate, 2.0713g relative molecular mass is 2080 polyethylene glycol monomethyl ether acrylate and 0.0888g Azobisisobutyronitrile and 70mL of acetonitrile were added to a 100mL four-necked bottle, nitrogen gas was passed for 20min, and the reaction was carried out under reflux at 80°C for 6h; 10mL of twice distilled water was added dropwise while distilling acetonitrile under normal pressure, and the dispersion was cooled naturally after the distillation was completed, and then After the cooled dispersion was centrifuged at 3000rpm for 15min, the supernatant was put into a dialysis bag with a cut-off molecular mass of 8000-14400 and dialyzed for 72h, and the dialyzed dispersion was freeze-dried to obtain a white powder product.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
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