Preparation method of 3-aminopropyl triethoxysilane
A technology of aminopropyltriethoxysilane and thermometers, applied in chemical instruments and methods, silicon organic compounds, compounds of group 4/14 elements of the periodic table, etc., can solve the problem of self-polymerization crosslinking failure and storage stability No problem, such as strong coupling activity, low ethanol content, and good storage stability
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Embodiment 1
[0020] In a 2000ml glass four-necked reaction flask with mechanical stirring, spherical reflux condenser, thermometer and oil bath heating, add 1000g of distilled water and raise the temperature to 20℃, then turn on the stirring, the stirring speed is 80 revolutions per minute, when the stirring speed is 80 Under the condition of revolution per minute, 400 g of 3-aminopropyltriethoxysilane with a content of 98.5% and a colorless and transparent appearance was dropped into a four-necked flask for hydrolysis reaction, and the dropping time was controlled to 2 hours. After the dropwise addition is completed, the temperature is increased to 60°C to continue the reaction for 2 hours, and the temperature is lowered to below 30°C after the reaction is completed.
[0021] The materials obtained from the reaction are added to a 2000ml three-necked flask heated by a fractionating tower, a thermometer and an oil bath. The fractionating tower is a glass packed tower with a length of 400 mm an...
Embodiment 2
[0024] In a 2000ml glass four-necked reaction flask with mechanical stirring, spherical reflux condenser, thermometer and oil bath heating, add 1000g of distilled water and raise the temperature to 60°C, then turn on the stirring at 300 revolutions per minute. Under stirring conditions of 300 revolutions per minute, 500 g of 3-aminopropyltriethoxysilane with a content of 98.5% and a colorless and transparent appearance was dropped into the four-necked flask, and the dropping time was controlled to 6 hours. After the dropwise addition is completed, the temperature is increased to 80°C to continue the reaction for 3 hours, and the temperature is lowered to below 30°C after the reaction is completed.
[0025] The materials obtained from the reaction are added to a 2000ml three-necked flask heated by a fractionating tower, a thermometer and an oil bath. The fractionating tower is a glass packed tower with a length of 400 mm and an inner diameter of 10 mm, and is filled with glass spri...
Embodiment 3
[0028] In a 2000ml glass four-necked reaction flask with mechanical stirring, spherical reflux condenser, thermometer and oil bath heating, add 1000g distilled water and raise the temperature to 50°C, then turn on the stirring at 200 revolutions per minute. 600 g of 3-aminopropyltriethoxysilane with a content of 98.5% and a colorless and transparent appearance was dropped into the four-necked flask, and the dropping time was controlled to 5 hours. After the dripping is completed, the temperature is increased to 70°C and the reaction is continued for 2 hours, and the temperature is lowered to below 30°C after the reaction is completed.
[0029] The materials obtained from the reaction are added to a 2000ml three-necked flask heated by a fractionating tower, a thermometer and an oil bath. The fractionating tower is a glass packed tower with a length of 400 mm and an inner diameter of 10 mm, and is filled with glass spring packing. Under normal pressure of 101.3Kpa, heating will fra...
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