Novel acrylate modified waterborne polyurethane adhesive

[0030] 1. Add 26 grams of isophorone diisocyanate (IPDI) and 40 grams of dehydrated polytetrahydrofuran ether glycol (PTMG, 2000) into a 500ml three-neck flask equipped with a stirring blade, a condenser tube and nitrogen protection at 80°C 0.02 g of dibutyltin dilaurate was added as an initiator, and kept at 70-80° C. for 40-50 minutes.

[0031] 2. Add 7 grams of 2,2-dimethylolpropionic acid and react for 2 hours. Acetone can be used to adjust the viscosity during the reaction.

[0032] 3. Lower the temperature so that the temperature in the three-neck flask is 40-48°C, and neutralize by adding triethylamine and a small amount of deionized water.

[0033] 4. After the dispersion is uniform, add 7 grams of sodium lauryl sulfate and 5 grams of potassium persulfate to continue the reaction for 30 minutes.

[0034] 5. After 30 minutes, add 20 grams of butyl acrylate and adjust the temperature to 60° C., and react for 2 hours.

[0035] After 6.2 hours, obtain novel acrylate modi...

[0037] 1. Add 26.3 grams of toluene diisocyanate (TDI) and 40 grams of dehydrated polytetrahydrofuran ether glycol (PTMG, 2000) into a 500ml three-necked flask equipped with a stirring paddle, condenser and nitrogen protection, and add 0.02 grams of Dibutyltin laurate was used as an initiator, and stirred at 90°C for 40-50 minutes.

[0038] 2. Add 5 grams of 2,2-dimethylolpropionic acid and react for 1 hour. Acetone can be used to adjust the viscosity during the reaction.

[0039] 3. Cool down to 50°C, add 7 grams of sodium lauryl sulfate, 5 grams of azobisisobutyronitrile and 30 grams of hydroxyethyl acrylate, raise the temperature to 80°C, and react for two hours

[0040] 4. Cool down to 40°C, add triethylamine and a small amount of deionized water for neutralization and dispersion, and obtain a new type of acrylate-modified water-based polyurethane binder.

[0042] 1. Add 43 grams of isophorone diisocyanate (IPDI) and 40 grams of dehydrated polytetrahydrofuran ether glycol (PTMG, 1000) into a 500ml three-neck flask equipped with a stirring blade, a condenser tube and nitrogen protection at 80°C 0.02 g of dibutyltin dilaurate was added as an initiator, and kept at 70-80° C. for 40-50 minutes.

[0043] 2. Add 7 grams of 2,2-dimethylolpropionic acid and react for 2 hours. Acetone can be used to adjust the viscosity during the reaction.

[0044] 3. Lower the temperature so that the temperature in the three-neck flask is 40-48°C.

[0045] 4. Add 10 g of 2-hydroxyethyl methacrylate and continue the reaction for 30 minutes.

[0046] 5. After 30 minutes, add 7 grams of sodium lauryl sulfate, 5 grams of azobisisobutyronitrile and 30 grams of hydroxybutyl acrylate and adjust the temperature to 60°C for 2 hours of reaction.

[0047] 6. After 2 hours, lower the temperature to 40°C and add triethylamine and a small amount of deionized water ...