A kind of method for preparing hexafluoroacetone with perfluoropropylene oxide as raw material

A technology of perfluoropropylene oxide and hexafluoroacetone, which is applied in the chemical industry and can solve the problems of short service life of catalysts

Active Publication Date: 2022-07-26
浙江利化新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new method for preparing hexafluoroacetone using perfluoropropylene oxide as a raw material, so as to provide a new preparation idea and solve the problems of short service life of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 Preparation of catalyst

[0017] Catalyst 1 was obtained by mixing 1 kg of o-trifluoromethyl phenol, 5 kg of activated carbon, and 1 kg of calcium chloride supported by the Merrifield resin at normal temperature and pressure, and stirred them uniformly.

Embodiment 2

[0018] Example 2 Preparation of catalyst

[0019] Catalyst 2 was obtained by mixing 1 kg of m-trifluoromethyl phenol, 1 kg of activated carbon, and 1 kg of calcium chloride supported by Merrifield resin at normal temperature and pressure under normal temperature and pressure.

Embodiment 3

[0020] Example 3 Preparation of catalyst

[0021] Catalyst 3 was obtained by mixing 1 kg of 2,6-bis(trifluoromethyl)-phenol, 5 kg of diatomaceous earth, and 1 kg of calcium chloride supported by Merrifield resin under normal temperature and normal pressure.

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PUM

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Abstract

The invention discloses a method for preparing hexafluoroacetone by using perfluoropropylene oxide as raw material. The isomerization reaction is carried out at 10-80 DEG C for 1-5 hours, and then hexafluoroacetone is obtained by distillation and purification. The catalyst is obtained by condensing substituted phenol and Merrifield resin, and then mixing and compounding with the carrier. The invention uses the substituted phenol supported by Merrifield resin as a catalyst for the first time, and is applied to the method for preparing hexafluoroacetone by using perfluoropropylene oxide as a raw material, so as to provide a new preparation idea, especially for fluorine chemical enterprises, which can fully Utilize homegrown intermediates. In addition, the raw materials used in the catalyst are readily available, the cost is low, and the economic benefit is good; the preparation process of the catalyst is simple, and the preparation conditions are mild. The yield of hexafluoroacetone is over 95%, the operation is safe, and the catalyst can be used continuously.

Description

technical field [0001] The invention relates to a method for preparing hexafluoroacetone by using perfluoropropylene oxide as a raw material, and belongs to the technical field of chemical industry. Background technique [0002] Hexafluoroacetone (HFA) is a widely used fluorine-containing fine chemical and an important organic fluorine industrial raw material. Companies such as DuPont in the United States and Daikin in Japan have developed and manufactured many valuable fluorine-containing intermediates and military chemical products using hexafluoroacetone as raw materials. High and low temperature resistance, radiation resistance, transparent material polyimide monomer 6DFA used in rayon polyester, polyether spinning, chitin, gel chromatography, fluorinated solvents, aerospace industry, optical glass, microelectronic circuit boards Surface protection layer, monomer of fluororesin, high temperature resistance, corrosion resistance and high self-extinguishing properties of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/58C07C49/167
CPCC07C45/58C07C49/167
Inventor 何建明裴文
Owner 浙江利化新材料科技有限公司
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