Synthesis of end amino silicone oil modified stryenemaleic anhydride copolymer

[0020] In a four-necked flask equipped with a thermometer, stirrer, water separator and reflux device, add 100 parts of SMA (the molar ratio of styrene and maleic anhydride in the copolymer is 5:1), 100 parts of toluene, and open nitrogen. Stir and raise the temperature to 60°C. When the materials are completely dissolved, add 1.1 parts of 10%wt acetic acid aqueous solution, keep for 0.5h, and use a constant flow pump to add 20 parts of 50% amino-terminated silicone oil toluene solution (amino-terminated silicone oil c=30). Set the dripping time for 0.5h. After the dripping is completed, heat up to 80°C, keep it for 3h, continue to heat up to 120°C, reflux for 5h, cut off the low boiling point in the system with a water trap, and dry after the reaction is complete. Get the target product.

[0022] In a four-necked flask equipped with a thermometer, agitator, water separator and reflux device, add 100 parts of SMA (the molar ratio of styrene and maleic anhydride in the copolymer is 3:1) and 100 parts of toluene. Stir and heat up to 60℃. When the materials are completely dissolved, add 1.1 parts of 10%wt acetic acid aqueous solution, keep for 0.5h, and use constant flow pump to add 20 parts of 50%wt amino-terminated silicone oil toluene solution (amino-terminated silicone oil c=30) , Set the dripping time to 0.5h. After the dripping is completed, heat up to 80°C, keep it for 3h, continue to heat up to 120°C, reflux for 5h, cut off the low boiling point in the system with a water trap, and dry after the reaction is complete. The target product is obtained.

[0024] In a four-necked flask equipped with a thermometer, agitator, water separator and reflux device, add 100 parts of SMA (the molar ratio of styrene and maleic anhydride in the copolymer is 3:1) and 100 parts of toluene. Stir and raise the temperature to 60℃. When the materials are completely dissolved, add 1.1 parts of 10%wt acetic acid aqueous solution, keep for 0.5h, and use constant flow pump to add 30 parts of 50% amino-terminated silicone oil in toluene solution (amino-terminated silicone oil c=30) , Set the dripping time 0.5h. After the dripping is completed, the temperature is raised to 80°C, kept for 3 hours, and the temperature is continued to 120°C, refluxed for 5 hours, the low boiling point in the system is cut off with a water separator, and after the reaction is completed, it is dried to obtain the target product.