Method for synthesizing butylhydroxyoxo-stannane

A technology for synthesizing butyl stannoic acid and butyl stannoic acid, which is applied in the chemical industry, can solve the problems of low product purity, difficulty in control, complex synthesis, etc., and achieve the effects of simple synthesis, stable and easy-going reaction, and high recovery rate

Inactive Publication Date: 2015-12-30
云南锡业锡化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current methods for synthesizing butylstannoic acid have problems such as complex synthesis, difficult control, low conversion rate, and low product purity. Overcoming these problems is an important topic in the chemical industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] (1) Control feeding: Weigh 5g NaOH into the reaction bottle and stir and dissolve with 200g water, use cooling water to control the temperature below 40°C, weigh 80g monobutyltin trichloride liquid into the constant pressure funnel, weigh 25g NaOH Dissolve in 50g of water and put it into the constant pressure funnel to slowly drop into the reaction flask, control the dropping temperature to be less than 30°C, and the pH of the dropping process is 8.0;

[0020] (2) Constant temperature reaction: After controlling the feeding, the liquid in the reaction vessel is heated to 50°C, and the constant temperature reaction is carried out for 1 hour to produce butylstannoic acid;

[0021] (3) Water washing: Suction filter the butyl stannoic acid obtained from the reaction with a Buchner funnel, transfer the filter cake to a 500ml beaker and add about 200ml water for washing, repeat twice and then suction filtration;

[0022] (4) Centrifugation: After passing the water washing, th...

example 2

[0028] (1) Control feeding: Weigh 100g of ammonia water with a concentration of 20% into the reaction bottle, use cooling water to control the temperature below 40°C, weigh 80g of monobutyltin trichloride liquid into the constant pressure funnel, and weigh 400g Ammonia water with a concentration of 20% is put into a constant pressure funnel and slowly added dropwise into the reaction flask, the temperature of the dropwise addition is controlled to be less than 20°C, and the pH of the dropwise addition process is 9.0;

[0029] (2) Constant temperature reaction: After controlling the feeding, the temperature of the liquid in the reaction vessel is raised to 40°C, and the constant temperature reaction is carried out for 2 hours to produce butylstannoic acid;

[0030] (3) Water washing: Suction filter the butyl stannoic acid obtained from the reaction with a Buchner funnel, transfer the filter cake to a 500ml beaker and add about 200ml water for washing, repeat twice and then sucti...

example 3

[0037] (1) Control feeding: Weigh 10g Na2CO3 into the reaction bottle and stir and dissolve it with 200g water, use cooling water to control the temperature below 40°C, weigh 80g monobutyltin trichloride liquid into the constant pressure funnel, weigh 35gNa2CO3 Dissolve in 150g of water, put it into a constant pressure funnel and slowly drop it into the reaction flask, control the dropping temperature below 20°C, and the pH of the dropping process is 8.0;

[0038] (2) Constant temperature reaction: After controlling the feeding, the liquid in the reaction vessel is heated to 50°C, and the constant temperature reaction is carried out for 6 hours to produce butylstannoic acid;

[0039] (3) Water washing: Suction filter the butyl stannoic acid obtained from the reaction with a Buchner funnel, transfer the filter cake to a 500ml beaker and add about 200ml water for washing, repeat twice and then suction filtration;

[0040] (4) Centrifugation: After passing the water washing, the ...

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PUM

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Abstract

The invention belongs to the field of chemical engineering, and particularly relates to a method for synthesizing butylhydroxyoxo-stannane. The method comprises the following five steps of material adding control, constant-temperature reaction, water washing, centrifugalization and drying. The method disclosed by the invention is simple in synthesis, and butyltin trichloride and alkali liquor are directly reacted at ambient temperature and pressure; material adding is easy to control, and the reaction is stable and easy-going; and through the implementation of a method for controlling the pH value of an end point, the conversion rate of products production is high, the recovery rate is more than 98%, and the main content is 98% or more.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a method for synthesizing butylstannoic acid. Background technique [0002] Organotin compounds are an important product of tin deep processing, with the characteristics of various varieties and wide applications, and it is the fastest growing field of tin consumption. Organotin products are used as heat stabilizers in plastic processing industries such as PVC, and have been widely used in industrialization. As catalysts, they are widely used in chemical industries such as silica gel synthesis, polyurethane synthesis, and coating synthesis. Butyl stannoic acid, also known as monobutyl tin oxide, can be used to synthesize butyl tin series heat stabilizers and catalysts, and can also be used as a polyurethane catalyst, silica gel catalyst, and coating catalyst with excellent performance. The current method for synthesizing butylstannoic acid has problems such as complex synthesis,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F11/00
Inventor 艾维华姚俊廖少峰王文娟花蓓江鑫
Owner 云南锡业锡化学品有限公司
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