Preparation process of zinc acetylacetonate

A technology of zinc acetylacetonate and preparation process, which is applied in the preparation of aldehyde/ketone chelate compound, organic chemistry and other directions, can solve the problems of large investment and high maintenance cost, and achieves the effects of easy operation, few by-products, simple and efficient process flow

Active Publication Date: 2018-07-20
DONGGUAN CHNV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of practical operation, this method still needs to use more water to ensure the full reaction of materials (2000g of acetylacetone, 780g of zinc oxide, 2000g of deionized water), and then the water needs to be discharged through the drying process to generate unnecessary energy consumption
In addition, it is necessary to use a special high-shear dispersing equipment to perform high-shearing on the material to ensure the crushing and diffusion of the coated particles in the reaction system, and the investment of high-shearing and high-dispersing equipment is large, and the maintenance cost is high

Method used

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  • Preparation process of zinc acetylacetonate
  • Preparation process of zinc acetylacetonate
  • Preparation process of zinc acetylacetonate

Examples

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Effect test

example 1

[0026] Add 400g of acetylacetone into the three-necked flask, heat up to 90°C-100°C, weigh 160g of zinc oxide and add it into the three-necked flask at a stirring rate of 150rpm, continue to heat up to 110°C-120°C, add 1g of water and mix for 30 minutes to produce material, after crushing, the white powder product of zinc acetylacetonate can be obtained. The yield of zinc acetylacetonate obtained was 95.7%, the zinc content was 25.2%, and m.p.129.8°C.

example 2

[0028] Add 1000g of acetylacetone into the three-necked flask, heat up to 90°C-100°C, weigh 395g of zinc oxide and add it into the three-necked flask at a stirring rate of 180rpm, continue to heat up to 115°C-125°C, add 5g of hydrogen peroxide and mix for 30 minutes to produce material, after crushing, the white powder product of zinc acetylacetonate can be obtained. The yield of zinc acetylacetonate obtained was 94.9%, the zinc content was 25.6%, and m.p.131.4°C.

example 3

[0030] Add 2000g of acetylacetone into the three-necked flask, heat up to 90°C-100°C, weigh 780g of zinc oxide and add it into the three-necked flask at a stirring rate of 200rpm, continue to heat up to 120°C-130°C, add 8g of glacial acetic acid and mix for 30 minutes. After discharging and pulverizing, the white powder product of zinc acetylacetonate can be obtained. The yield of zinc acetylacetonate obtained was 94.3%, the zinc content was 25.9%, and m.p.132.6°C.

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Abstract

The invention provides a preparation process of zinc acetylacetonate. The process includes: adding acetylacetone and zinc oxide into a reactor mixedly, conducting stirring heating to 110DEG C-140DEG C, and adding a certain amount of catalyst for reaction for 30min, thus obtaining the target product zinc acetylacetonate. The whole technological process is simple and efficient, and is easy to operate, not only saves the production cost, but also greatly improves the production efficiency, and is in line with the requirements of green chemistry. Proven by IR and DSC tests, the product obtained bythe technological conditions provided by the invention has the characteristics of few by-product and high purity. The static thermal stability of the product is superior to that of similar products.

Description

technical field [0001] The invention relates to the field of chemical additives, in particular to a preparation process of zinc acetylacetonate, the prepared zinc acetylacetonate is widely used in PVC heat stabilizers, catalysts, flame retardants, resin crosslinking agents, superconducting films, and heat-reflecting glass films And transparent conductive film forming agent and other fields. Background technique [0002] Acetylacetonate is an important class of organometallic compounds, and its many special properties have attracted widespread attention. Zinc acetylacetonate, as a representative variety, is widely used in the fields of PVC heat stabilizers, catalysts, flame retardants, resin crosslinking agents, superconducting films, heat-reflecting glass films, and transparent conductive film forming agents. [0003] At present, the preparation methods of zinc acetylacetonate are mainly divided into the following two types: 1) liquid phase method, that is, react metal zinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/77C07C49/92
CPCC07C45/77C07C49/92
Inventor 胡丹陈立桓荀育军王玉梅
Owner DONGGUAN CHNV TECH CO LTD
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