Polyacrylate-polyurethane composite emulsion with anti-ultraviolet function and preparation method and application thereof
A technology of polyacrylate and composite emulsion, applied in the field of composite emulsion to achieve the effect of good anti-ultraviolet performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0022] The preparation method and application of a polyacrylate-polyurethane composite emulsion with anti-ultraviolet function described in this embodiment, the specific steps are as follows:
[0023] (1) Prepolymerization: add 0.1mol polyethylene glycol and 0.15mol dimethylolpropionic acid to the reactor, vacuum dehydrate at 110°C for 1.5h, slowly cool down to 55°C, add dropwise 0.4mol toluene diisocyanate, 65mL Butanone and 1.3g of catalyst dibutyltin dilaurate were heated up to 85°C and reacted for 3.5h.
[0024] (2) Chain extension: Cool down the reactor in step (1) to 43°C, add 0.125mol of monohydroxyacrylic acid several times within 1.2h; raise the temperature to 70°C, and keep it warm for 1.5h.
[0025] (3) Grafting: add 0.42g of sodium lignosulfonate and ammonium persulfate aqueous solution to the reaction kettle of step (2); the concentration of ammonium persulfate aqueous solution is 0.3%; finally, cool naturally.
[0026] (4) Emulsification: The solution in step (3...
Embodiment 2
[0032] The preparation method and application of a polyacrylate-polyurethane composite emulsion with anti-ultraviolet function described in this embodiment, the specific steps are as follows:
[0033] (1) Prepolymerization: add 0.1mol polyethylene glycol and 0.1mol dimethylolpropionic acid to the reactor, vacuum dehydrate at 100°C for 1 hour, slowly cool down to 50°C, add dropwise 0.3mol toluene diisocyanate, 95.6mL Butanone and 0.478g catalyst dibutyltin dilaurate were heated to 80°C and reacted for 3h.
[0034] (2) Chain extension: Cool down the reaction kettle in step (1) to 40°C, add 0.1mol monohydroxyacrylic acid several times within 1 hour; raise the temperature to 60°C, and keep it warm for 1 hour.
[0035](3) Grafting: Add 0.5 g of sodium lignosulfonate and ammonium persulfate aqueous solution to the reaction kettle of step (2); the concentration of the ammonium persulfate aqueous solution is 0.1%; finally, cool naturally.
[0036] (4) Emulsification: The solution in ...
Embodiment 3
[0042] The preparation method and application of a polyacrylate-polyurethane composite emulsion with anti-ultraviolet function described in this embodiment, the specific steps are as follows:
[0043] (1) Prepolymerization: add 0.1mol polyethylene glycol and 0.2mol dimethylolpropionic acid to the reactor, vacuum dehydrate at 120°C for 2 hours, slowly cool down to 60°C, add dropwise 0.5mol toluene diisocyanate, 51.3mL Butanone and 2.3g catalyst dibutyltin dilaurate were heated up to 90°C and reacted for 4h.
[0044] (2) Chain extension: Cool down the reaction kettle in step (1) to 45°C, add 0.2mol monohydroxyacrylic acid in several times within 1.5h; raise the temperature to 80°C, and keep it warm for 2h.
[0045] (3) Grafting: Add 0.67g of sodium lignosulfonate and ammonium persulfate aqueous solution to the reaction kettle of step (2); the concentration of ammonium persulfate aqueous solution is 0.5%; finally, cool naturally.
[0046] (4) Emulsification: The solution in step...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More