A kind of preparation method of polymerized ultraviolet light absorber
A technology of polymerization and ultraviolet light, applied in the direction of coating, etc., can solve the problems of content reduction, cumbersome process operation, low grafting rate, etc., and achieve the effect of reducing usage and cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A preparation method of a polymerized ultraviolet light absorber, the method comprises the following steps:
[0029] (1) 214g (1.0mol) of UV-0 (2,4-dihydroxybenzophenone), a small molecule ultraviolet light absorber, was placed in a glass flask, 5g of p-toluenesulfonic acid was added, 250g of ethyl acetate was added, and the mixture was stirred. Make it completely dissolved and add 98g (1.0mol) maleic anhydride while stirring, heat to 80°C, react under stirring, and check the pH to 6-8 (drop the reaction on a pH test paper wetted with water to test), It can be judged that the reaction is complete, and the temperature is cooled down to form a reaction solution of the polymerized monomer M with ultraviolet light absorption function;
[0030] (2) Add 104g (1.0mol) of styrene monomer to the above reaction system, add 15g AIBN (azobisisobutyronitrile), stir to dissolve, slowly heat up to 80°C, and react for 6h under continuous stirring. Form a polymerized UV absorber. Cool...
Embodiment 2
[0032] A preparation method of a polymerized ultraviolet light absorber, the method comprises the following steps:
[0033] (1) 214g (1.0mol) of UV-0 (2,4-dihydroxybenzophenone), a small molecule ultraviolet light absorber, was placed in a glass flask, 5g of p-toluenesulfonic acid was added, 250g of ethyl acetate was added, and the mixture was stirred. Make it dissolve completely and add 98g (1.0mol) maleic anhydride while stirring, heat to 110°C, react under stirring, and check the pH to 6-8 (drop the reaction on a pH test paper wetted with water to test), It can be judged that the reaction is complete, and the temperature is cooled down to form a reaction solution of the polymerized monomer M with ultraviolet light absorption function;
[0034] (2) Add 43 g (0.5 mol) of acrylic monomer, 50 g (0.5 mol) of methyl methacrylate to the above reaction system, add 15 g of BPO (benzoyl peroxide), stir to dissolve, and slowly heat up to 110 ° C , and react for 4h under continuous st...
Embodiment 3
[0037] A preparation method of a polymerized ultraviolet light absorber, the method comprises the following steps:
[0038] (1) 214g (1.0mol) of UV-0 (2,4-dihydroxybenzophenone), a small molecule ultraviolet light absorber, was placed in a glass flask, 5g of p-toluenesulfonic acid was added, 250g of ethyl acetate was added, and the mixture was stirred. Make it dissolved completely, add 98g (1.0mol) maleic anhydride while stirring, heat to 100°C, and under stirring, check the pH to 6-8 (drop the reaction on a pH test paper wetted with water to test), namely It can be judged that the reaction is complete, the temperature is cooled, and vacuum dried, that is, the polymerized monomer M with ultraviolet light absorption function is formed;
[0039] (2) 500g of water was added to the mixture to which 104g (1.0mol) of polymerized monomer M, 56.8g (0.8mol) of acrylamide and 200g (0.2mol) of allyl polyethylene glycol (molecular weight 1000) had been added. 20g AIBA (azodiisobutylamidi...
PUM
Property | Measurement | Unit |
---|---|---|
wavelength | aaaaa | aaaaa |
degree of grafting | aaaaa | aaaaa |
degree of grafting | 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