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Method for dry-method synthesis of zinc acetylacetonate under normal pressure

A technology of zinc acetylacetonate and acetylacetonate, applied in the field of preparation of zinc acetylacetonate, can solve the problems of high energy consumption, complex process, and many waste water, and achieve the effects of low energy consumption, simple operation, and no waste water discharge

Active Publication Date: 2019-08-09
SHENZHEN AIMSEA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for dry synthesis of zinc acetylacetonate under normal pressure, aiming to solve the problem of the large amount of waste water and large energy consumption in the production process of zinc acetylacetonate in the prior art. , process complex problems

Method used

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  • Method for dry-method synthesis of zinc acetylacetonate under normal pressure
  • Method for dry-method synthesis of zinc acetylacetonate under normal pressure
  • Method for dry-method synthesis of zinc acetylacetonate under normal pressure

Examples

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Effect test

Embodiment 1

[0039] Weigh 100g of acetylacetone and pour it into the dropping funnel, then weigh 55g of basic zinc carbonate and pour it into the stirrer, initially set the stirrer at 500rpm, turn on the switch of the dropping funnel, and let the acetylacetone drop down. The reaction proceeds rapidly, and carbon dioxide escapes immediately, which will bring up basic zinc carbonate powder. With the dropwise addition of acetylacetone, more and more zinc acetylacetonate is produced. Increase the rotation speed to 2000rpm. After 30min, all the acetylacetone has been dropped, and continue to stir at 2000rpm for 20min. After the reaction, put the product into an oven for 1 hour at 100°C. The zinc content was measured by weighing, the product yield was 94.56%, and the zinc content was 24.36%.

Embodiment 2

[0041] Weigh 105g of acetylacetone and pour it into the dropping funnel, then weigh 56g of basic zinc carbonate and pour it into the stirrer, initially set the stirrer at 300rpm, turn on the switch of the dropping funnel, and let the acetylacetone drop down. The reaction proceeds rapidly, and carbon dioxide escapes immediately, which will bring up basic zinc carbonate powder. With the dropwise addition of acetylacetone, more and more zinc acetylacetonate is produced. Increase the rotation speed to 1500rpm. After 35min, all the acetylacetone has been dropped, and continue to stir at 2500rpm for 25min. After the reaction, put the product into an oven for 1 hour at 100°C. The zinc content was measured by weighing, and the product yield was 97.42%, and the zinc content was 25.24%.

Embodiment 3

[0043] Weigh 85g of acetylacetone and pour it into the dropping funnel, then weigh 45g of basic zinc carbonate and pour it into the stirrer, initially set the stirrer at 500rpm, turn on the switch of the dropping funnel, and let the acetylacetone drop down. The reaction proceeds rapidly, and carbon dioxide escapes immediately, which will bring up basic zinc carbonate powder. With the dropwise addition of acetylacetone, more and more zinc acetylacetonate is produced. Increase the rotation speed to 3000rpm. After 30 minutes, all the acetylacetone has been dropped, and continue to stir at a rotation speed of 3000rpm for 25 minutes. After the reaction, put the product into an oven for 1 hour at 100°C. The zinc content was measured by weighing, the product yield was 96.27%, and the zinc content was 24.98%.

[0044] The product prepared in this embodiment 3 and the zinc acetylacetonate standard sample are carried out NMR (nuclear magnetic resonance) test respectively, and the measu...

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Abstract

The invention provides a method for dry-method synthesis of zinc acetylacetonate under normal pressure. The method comprises the steps that acetylacetonate is added to basic zinc carbonate under a stirring condition for a reaction to obtain a reaction product; the reaction product is dried, and the zinc acetylacetonate is prepared. According to the method, the basic zinc carbonate is adopted as azinc source and reacts with the acetylacetone, the reaction speed of the basic zinc carbonate and the acetylacetone is high, the reaction can be carried out at the normal temperature and under the normal pressure, and the making process is simple; the reaction can be carried out simply by an ordinary stirrer, and the reaction energy consumption is small; furthermore, in the reaction process, the reactants do not need to be dispersed by a solvent, after the reaction is completed, there is no solvent to be treated or waste water to be discharged, and the method is clean and environmentally friendly.

Description

technical field [0001] The invention relates to the field of preparation of zinc acetylacetonate, in particular to a method for dry synthesis of zinc acetylacetonate under normal pressure. Background technique [0002] Polyvinyl chloride (PVC), polyethylene, polystyrene, polystyrene and ABS are also known as the five major thermoplastic synthetic resins. Among several general-purpose synthetic resins, the output of PVC is only lower than that of polyethylene, ranking second. PVC is polymerized from vinyl chloride. It has excellent chemical corrosion resistance, electrical insulation, flame retardancy and mechanical properties, and has the advantages of light weight, high strength and low cost. It is widely used in the production of various plastic products. However, PVC materials are prone to thermal degradation during processing and use, resulting in darker colors and lower performance. Therefore, stabilizers must be added to prevent or alleviate thermal degradation during...

Claims

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Application Information

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IPC IPC(8): C07C45/77C07C49/92
CPCC07C45/77C07C49/92
Inventor 周志鑫周国庆严一丰严晴
Owner SHENZHEN AIMSEA IND
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