A kind of preparation method of monobutyl tin oxide
A technology of monobutyl tin oxide and monobutyl tin trichloride, applied in the field of preparation of monobutyl tin oxide, can solve problems such as affecting the purity and production efficiency of monobutyl tin oxide products
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[0029] The invention provides a kind of preparation method of monobutyl tin oxide, comprises the following steps:
[0030] (1) Add tetrabutyltin into the reactor, stir evenly, slowly add tin tetrachloride dropwise, after the dropwise addition, stir for 30min, raise the temperature to 140°C, keep warm for 4-8h, and after the reaction is over, monobutyl trichloride is obtained. A mixed solution of tin chloride and dibutyl tin dichloride;
[0031] (2) The mixed solution of monobutyl tin trichloride and dibutyl tin dichloride is heated up to 95-100° C., and the boiling points of the two substances in the mixture are different, and monobutyl tin trichloride, dibutyl tin trichloride, Dibutyltin dichloride, collect monobutyltin trichloride;
[0032] (3) Add monobutyl tin trichloride, surfactant, organic solvent collected in step (2) to the reactor, after stirring evenly, slowly add sodium hydroxide solution dropwise, after dropwise, be warming up to 90 ℃, heat preservation reaction...
Embodiment 1
[0069] The preparation method of described monobutyl tin oxide comprises the following steps:
[0070] (1) Add tetrabutyltin into the reactor, stir evenly, slowly add tin tetrachloride dropwise, after the dropwise addition, stir for 30min, heat up to 140°C, keep warm for 6h, and the reaction is over to obtain monobutyltin trichloride A mixed solution of tin and dibutyltin dichloride;
[0071] (2) Warm up the mixed solution of monobutyltin trichloride and dibutyltin dichloride to 98°C, the boiling points of the two substances in the mixture are different, and the monobutyltin trichloride, dibutyltin trichloride and dibutyltin trichloride are successively distilled. Base tin dichloride, collect monobutyl tin trichloride;
[0072] (3) Add monobutyl tin trichloride, surfactant, organic solvent collected in step (2) to the reactor, after stirring evenly, slowly add sodium hydroxide solution dropwise, after dropwise, be warming up to 90 ℃, keep warm for 4 hours, cool down to room ...
Embodiment 2
[0084] The preparation method of described monobutyl tin oxide comprises the following steps:
[0085] (1) Add tetrabutyltin into the reactor, stir evenly, slowly add tin tetrachloride dropwise, after the dropwise addition, stir for 30min, heat up to 140°C, keep warm for 6h, and the reaction is over to obtain monobutyltin trichloride A mixed solution of tin and dibutyltin dichloride;
[0086] (2) Warm up the mixed solution of monobutyltin trichloride and dibutyltin dichloride to 98°C, the boiling points of the two substances in the mixture are different, and the monobutyltin trichloride, dibutyltin trichloride and dibutyltin trichloride are successively distilled. Base tin dichloride, collect monobutyl tin trichloride;
[0087] (3) Add monobutyl tin trichloride, surfactant, organic solvent collected in step (2) to the reactor, after stirring evenly, slowly add sodium hydroxide solution dropwise, after dropwise, be warming up to 90 ℃, keep warm for 4 hours, cool down to room ...
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