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Method of preparing monobutyl tin trichloride and dibutyl tin dichloride from low purity tributyl tin chloride

A low-purity tributyltin chloride, monobutyltin trichloride technology, applied in the direction of tin organic compounds, etc., can solve the problems of serious environmental pollution, difficult to handle, lack of tributyltin chloride and the like

Pending Publication Date: 2019-05-31
南通濠泰化工产品有限公司
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  • Abstract
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Problems solved by technology

When tributyltin chloride is used as an intermediate catalyst for pharmaceutical processing, it cannot continue to be used as waste due to the high impurity content after being applied mechanically for a certain number of times, and tributyltin chloride is serious to environmental pollution and is not easy to handle. In the prior art Lack of further utilization of low-purity tributyltin chloride

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  • Method of preparing monobutyl tin trichloride and dibutyl tin dichloride from low purity tributyl tin chloride

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Embodiment Construction

[0010] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0011] see figure 1 , this embodiment discloses a method for preparing monobutyltin trichloride and dibutyltin dichloride from low-purity tributyltin chloride, comprising the following steps: (1) making the purity lower than 95% The tributyl tin chloride product and tin tetrachloride mixed control reaction temperature reaction obtains the mixture of monobutyl tin trichloride and dibutyl tin dichloride; (2) monobutyl tin chloride that step (1) obtains The mixture of tin...

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Abstract

The invention discloses a method of preparing monobutyl tin trichloride and dibutyl tin dichloride from low purity tributyl tin chloride. The method comprises following steps: (1) mixing tributyl tinchloride with a purity lower than 95% with tin tetrachloride, controlling the temperature to carry out reactions to obtain a mixture composed of monobutyl tin trichloride and dibutyl tin dichloride; and (2) distilling and separating the mixture obtained in the step (1) to obtain monobutyl tin trichloride and dibutyl tin dichloride. Low purity and waste tributyl tin chloride is fully utilized to generate monobutyl tin trichloride and dibutyl tin dichloride that can be used, the cost for processing sewage of organic tin catalysts is reduced, and the utilization rate is improved.

Description

technical field [0001] The invention relates to an organotin catalyst, in particular to a method for preparing monobutyltin trichloride and dibutyltin dichloride from low-purity tributyltin chloride. Background technique [0002] Tributyltin chloride has antiseptic, bactericidal, anti-mildew effects, etc. It can be used as rodenticide, rodent-repelling cable coating and synthetic intermediate, and can be widely used in wood preservation, ship paint, etc. At the same time, it is widely used in the pharmaceutical industry as a pharmaceutical intermediate, and can be used as a catalyst, the introduction of tributyltin groups in organic synthesis, and the synthesis of prostaglandins. When tributyltin chloride is used as an intermediate catalyst for pharmaceutical processing, it cannot continue to be used as waste due to the high impurity content after being applied mechanically for a certain number of times, and tributyltin chloride is serious to environmental pollution and is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/22
Inventor 姜盼盼刘美芳
Owner 南通濠泰化工产品有限公司
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