2. Secondly, 8Kg of aminosilane is added with stirring, and then 400 g of potassium hydroxide aqueous solution and 200 g of distilled water are slowly added, and stirring cannot be stopped during the feeding process.
3. Finally, start heating up, and start timing when the feed temperature is 150℃. At the same time, pay attention to temperature control, and keep the feed temperature at 150- 160℃ to make it reddish.