Synthesis method of dibutyltin dilaurate
A technology of dibutyltin laurate and dibutyltin dichloride, which is applied in the direction of tin organic compounds, can solve environmental pollution, a large amount of waste water, unfavorable environment and personal health, etc., to protect the environment and personal safety, shorten the process, and reduce energy consumption. consumption effect
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Embodiment 1
[0018] A kind of synthetic method of dibutyltin dilaurate, comprising the following steps: (1) add 200g lauric acid, 123.3g dichloro Dibutyltin and 100mL of absolute ethanol, inject 226.6g of sodium ethoxide-ethanol solution with a mass fraction of 30% into the constant pressure dropping funnel, start heating and stirring, when the temperature of the mixed solution reaches 55°C, add the sodium ethoxide-ethanol solution dropwise , keep the dropping rate at 7mL / min;
[0019] (2) After the sodium ethoxide-ethanol solution is added dropwise, keep the temperature at 50-60°C. After reacting for 30 minutes, turn on the cooling water and start vacuuming to evaporate the ethanol solvent. When the temperature of the mixed solution in the reactor reaches 70 ℃, and when no liquid distills out, stop vacuuming and heating;
[0020] (3) Use a funnel to filter out the crystals in the feed liquid to obtain a light yellow liquid product.
Embodiment 2
[0022] A kind of synthetic method of dibutyltin dilaurate, comprising the following steps: (1) add 200g lauric acid, 123.3g dichloro Dibutyltin and 76mL of absolute ethanol, inject 226.6g of sodium ethoxide-ethanol solution with a mass fraction of 28% into the constant pressure dropping funnel, start heating and stirring, when the temperature of the mixed solution reaches 55°C, add the sodium ethoxide-ethanol solution dropwise , keep the dropping rate at 10mL / min;
[0023] (2) After the sodium ethoxide-ethanol solution is added dropwise, keep the temperature at 50-60°C. After reacting for 30 minutes, turn on the cooling water and start vacuuming to evaporate the ethanol solvent. When the temperature of the mixed solution in the reactor reaches 70 ℃, and when no liquid distills out, stop vacuuming and heating;
[0024] (3) Use a funnel to filter out the crystals in the feed liquid to obtain a light yellow liquid product.
Embodiment 3
[0026] A kind of synthetic method of dibutyltin dilaurate, comprising the following steps: (1) add 200g lauric acid, 123.3g dichloro Dibutyltin and 100mL of absolute ethanol, inject 226.6g of sodium ethoxide-ethanol solution with a mass fraction of 32% into the constant pressure dropping funnel, start heating and stirring, when the temperature of the mixed solution reaches 55°C, add the sodium ethoxide-ethanol solution dropwise , keep the dropping rate at 5mL / min;
[0027] (2) After the sodium ethoxide-ethanol solution is added dropwise, keep the temperature at 50-60°C. After reacting for 30 minutes, turn on the cooling water and start vacuuming to evaporate the ethanol solvent. When the temperature of the mixed solution in the reactor reaches 70 ℃, and when no liquid distills out, stop vacuuming and heating;
[0028] (3) Use a funnel to filter out the crystals in the feed liquid to obtain a light yellow liquid product.
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