A kind of waterborne polyurethane acrylate oligomer, its preparation method and waterborne ultraviolet light curing coating
A urethane acrylate and urethane acrylic technology, applied in the polymer field, can solve problems such as environmental pollution and health hazards of operators, and achieve the effects of excellent anti-graffiti and excellent stain resistance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0050] The present invention provides a kind of preparation method of the waterborne urethane acrylate oligomer having the structure shown in formula I described in above-mentioned technical scheme, comprises the following steps:
[0051] a) under nitrogen or inert gas conditions, the hexamethylene diisocyanate trimer is reacted with a fluorosurfactant having a structure shown in formula II to obtain a first intermediate;
[0052] Formula II;
[0053] In formula II, said a=1-7, b=0-15;
[0054] b) reacting the hydroxyl-terminated fluorine-containing compound with the first intermediate obtained in step a) in the presence of alcohol ether acetate to obtain a second intermediate;
[0055] c) in the presence of a catalyst and a polymerization inhibitor, react the second intermediate obtained in the step b) with a hydroxyl-containing acrylate to obtain a water-based polyurethane acrylate oligomer having a structure shown in formula I.
[0056]Under the condition of nitrogen or...
Embodiment 1
[0118] Under the protection of nitrogen, add 268g of HDI trimer to the three-necked flask, raise the temperature to 65°C, add 340g of perfluoroalkyl polyoxyethylene ether ZonylFSO-100 dropwise, and the dropping rate is 3mL / min. After the dropwise addition, Keep the temperature and continue to stir for 1.5h to obtain the first intermediate;
[0119] Add 65g of ethylene glycol ethyl ether acetate to the first intermediate, raise the temperature to 80°C, add 48g of 2,2,2-trifluoroethanol dropwise, at a rate of 5mL / min, and keep Continue stirring at this temperature for 1.5h to obtain the second intermediate;
[0120]Add 0.328g of dibutyltin dilaurate and 3.24g of p-hydroxyanisole to the second intermediate, drop the temperature to 70°C, and add 68g of hydroxyethyl acrylate dropwise at a rate of 15mL / min. , continue to react for 1.5h to obtain water-based urethane acrylate oligomer.
[0121] The present invention carries out hydrogen nuclear magnetic resonance spectrum identific...
Embodiment 2
[0126] Under the protection of nitrogen, add 325g of HDI trimer to the three-necked flask, raise the temperature to 75°C, add 410g of perfluoroalkyl polyoxyethylene ether ZonylFSO-100 dropwise, and the dropping rate is 5mL / min. The temperature continued to stir for 3h to obtain the first intermediate;
[0127] Add 120g of diethylene glycol ethyl ether acetate to the first intermediate, raise the temperature to 85°C, add 186g of 1H,1H,2H,2H-tridecafluoro-1-octanol dropwise, and the dropping rate is 8mL / min, after the dropwise addition, keep the temperature and continue to stir for 3h to obtain the second intermediate;
[0128] Add 0.46g of stannous octoate and 5.53g of hydroquinone to the second intermediate, drop the temperature to 75°C, add 158g of dipentaerythritol pentaacrylate dropwise at a rate of 20mL / min, and continue the reaction after the addition is complete 3h, to obtain water-based polyurethane acrylate oligomer.
[0129] The present invention carries out hydrog...
PUM
| Property | Measurement | Unit |
|---|---|---|
| number average molecular weight | aaaaa | aaaaa |
| particle size (mesh) | aaaaa | aaaaa |
| number average molecular weight | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More