Waterborne UV-curable polyurethane resin and its preparation method and application
A technology of water-based polyurethane and polyurethane resin, which is applied in the direction of polyurea/polyurethane coatings and coatings, can solve the problems of limiting the promotion and application of water-based UV-curable polyurethane resin, slow photocuring rate, and low bonding strength, and achieve good results. Environmental protection, high production efficiency, good flexibility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] The present embodiment is a kind of water-based ultraviolet light curing polyurethane resin, and its raw material and preparation method are as follows:
[0040] 1) Under the protection of nitrogen, put 28 parts of toluene diisocyanate in a four-neck flask equipped with a mechanical stirrer, dropping funnel and reflux condenser, raise the temperature to 30-40°C, and start to drop 2 parts of castor oil and 0.0004 Dibutyltin dilaurate, react at 50±2°C for 1.5~2h after dropping.
[0041] 2) At a temperature of 50-55°C, add 28 parts of polycarbonate diol (molecular weight: 1000 g / mol) dissolved in 0.0056 parts of dibutyltin dilaurate dropwise, and finish adding dropwise within 1 hour, then raise the temperature To 75~80℃, react for 2~2.5h;
[0042] 3) Lower the temperature to 40-50°C, add 3 parts of 1,4-butanediol and 6 parts of epoxy acrylate dissolved in a small amount of acetone dropwise, and complete the dropwise addition within 1 hour. Raise the temperature to 70-75°...
Embodiment 2
[0048] The present embodiment is a kind of water-based ultraviolet light curing polyurethane resin, and its raw material and preparation method are as follows:
[0049]1) Under the protection of nitrogen, put 36 parts of dicyclohexylmethane diisocyanate in a four-neck flask equipped with a mechanical stirrer, dropping funnel and reflux condenser, raise the temperature to 30-40°C, and start to drop 1 part of castor Sesame oil and 0.0002 parts of dibutyltin dilaurate, react at 50±2°C for 1.5-2 hours after dripping.
[0050] 2) At a temperature of 50-55°C, add dropwise 23 parts of polyether diol (molecular weight: 1000 g / mol) with 0.0057 parts of dibutyltin dilaurate dissolved therein, and finish the dropwise addition within 1 hour, then raise the temperature to 75~80℃, react for 2~2.5h.
[0051] 3) Lower the temperature to 40-50°C, add 3 parts of 1,4-butanediol and 5 parts of epoxy acrylate dissolved in a small amount of acetone dropwise, and complete the dropwise addition with...
Embodiment 3
[0057] The present embodiment is a kind of water-based ultraviolet light curing polyurethane resin, and its raw material and preparation method are as follows:
[0058] 1) Under the protection of nitrogen, put 28 parts of toluene diisocyanate in a four-neck flask equipped with a mechanical stirrer, dropping funnel and reflux condenser, raise the temperature to 30-40°C, and start to drop 2 parts of castor oil and 0.0004 Dibutyltin dilaurate, react at 50±2°C for 1.5~2h after dropping.
[0059] 2) At a temperature of 50-55°C, add dropwise 28 parts of polytetrahydrofuran diol (molecular weight: 1000 g / mol) with 0.0054 parts of dibutyltin dilaurate dissolved therein, and finish adding dropwise within 1 hour, and then raise the temperature to 75~80℃, react for 2~2.5h;
[0060] 3) Lower the temperature to 40-50°C, add 3 parts of 1,4-butanediol and 6 parts of epoxy acrylate dissolved in a small amount of acetone dropwise, and complete the dropwise addition within 1 hour. Raise the t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| hydroxyl value | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More