Controllable method for preparing methoxy polyethylene glycol methacrylate-styrene polymer under condition of high vacuum degree
A technology of polyethylene glycol methacrylate and methoxy polyethylene glycol, applied in the direction of organic chemistry, etc., can solve the problems of difficult extraction, limited entrainment effect, difficult catalyst recovery, etc., so as to reduce the dosage and reduce the possibility , the effect of mild reaction conditions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] Add 30.2000g of methoxypolyethylene glycol (the degree of polymerization n is 13) into the reaction kettle, add catalyst 4-(dimethylamino)pyridine 1.0351g under stirring, heat to dissolve, weigh 0.0086g of polymerization inhibitor and dissolve in 4.3045 In 1 g of methacrylic acid, connect constant pressure drop liquid and controllable vacuuming device, control the vacuum at 0.095MPa, raise the temperature to 63°C, add methacrylic acid dropwise within 3 hours, react for 5 hours, and cool down to obtain methoxy Polyethylene glycol methacrylate.
Embodiment 2
[0021] Add 50.3000g of methoxypolyethylene glycol (the degree of polymerization n is 45) in the reaction kettle, add the catalyst 4-(dimethylamino)pyridine 2.1239g under stirring, heat to dissolve, weigh 0.0084g of polymerization inhibitor and dissolve in 2.7979 In 1 g of methacrylic acid, connect constant pressure drop liquid and controllable vacuuming device, control the vacuum at 0.097MPa, raise the temperature to 50°C, add methacrylic acid dropwise within 2 hours, react for 5.5 hours, and cool down to obtain methoxy Polyethylene glycol methacrylate.
Embodiment 3
[0023] Add 110.8000g of methoxypolyethylene glycol (polymerization degree n is 100) in the reaction kettle, add catalyst 4-(dimethylamino)pyridine 5.7014g under stirring, heat to dissolve, weigh 0.0129g of polymerization inhibitor and dissolve in 3.2284 In 1 g of methacrylic acid, connect constant pressure drop liquid and controllable vacuuming device, control the vacuum at 0.099MPa, raise the temperature to 30°C, add methacrylic acid dropwise within 2.5 hours, react for 6 hours, and cool down to obtain methoxy Polyethylene glycol methacrylate.
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