Preparation method of HFPO (hexafluoropropylene oxide) as perfluoro(2-methyl-3-pentanone) precursor

A technology of hexafluoropropylene oxide and perfluorohexanone, which is applied in the field of preparation of hexafluoropropylene oxide, the precursor of perfluorohexanone, can solve the problems of power consumption and achieve low cost, high yield and short reaction time Effect

Active Publication Date: 2018-10-02
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

The current efficiency is 65%, and the power consumption is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Pass 0.3 moles of sulfur dioxide, 0.5 moles of nitrogen monoxide, and 0.8 moles of oxygen into the microreactor. After reacting at 50°C for 10 minutes, pass 1.6 moles of hexafluoropropylene preheated at 50°C into the microreactor. After reacting for 30 minutes, 252.3 grams of perfluoropropylene oxide were obtained by separation in a gas cabinet, with a yield of 95%.

Embodiment 2

[0032] Pass 0.3 moles of sulfur dioxide, 0.5 moles of nitrogen monoxide, and 2.4 moles of oxygen into the microreactor. After reacting at 30°C for 10 minutes, pass 0.53 moles of hexafluoropropylene preheated at 30°C into the microreactor. After reacting for 5 minutes, 85.0 g of perfluoropropylene oxide was obtained by separation in a gas cabinet, with a yield of 96%.

Embodiment 3

[0034] Pass 0.3 moles of sulfur dioxide, 0.5 moles of nitrogen monoxide, and 4.8 moles of oxygen into the microreactor. After reacting at 0°C for 10 minutes, pass 0.93 moles of hexafluoropropylene preheated at 0°C into the microreactor. After reacting for 10 minutes, 148.7 grams of perfluoropropylene oxide were obtained by separation in a gas cabinet, with a yield of 96%.

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Abstract

The invention discloses a preparation method of HFPO (hexafluoropropylene oxide) as a perfluoro(2-methyl-3-pentanone) precursor. The preparation method comprises steps as follows: sulfur dioxide, nitric oxide and oxygen are introduced into a microchannel reactor, sulfur trioxide and nitrogen dioxide are generated and oxidized with hexafluoropropylene gas in the microchannel reactor, and HFPO is generated. The preparation method is short in reaction time, safe, low in cost and high in yield, and the process is simple.

Description

technical field [0001] The invention relates to a preparation method of organic fluorine chemicals, in particular to a preparation method of hexafluoropropylene oxide, a precursor of perfluorohexanone. Background technique [0002] Perfluoropropylene oxide (English name Hexafluoropropylene Oxide, referred to as HFPO, also known as hexafluoropropylene oxide), is a widely used organic fluorine chemical. Due to the three-membered ring of HFPO and the strong electron-withdrawing properties of oxygen atoms, the carbon atoms on HFPO are easily attacked by nucleophiles. Therefore, HFPO is prone to react with nucleophiles such as water, alcohol, sulfuric acid, amines, Grignard reagents, and organolithium. It can react with acyl fluorides to prepare perfluorovinyl ethers, which are widely used, and are also used to prepare perfluoroacetone and perfluoroacetone. An important raw material for acid fluoride. [0003] At present, the synthesis of HFPO at home and abroad mainly uses Hex...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C07D303/48C07D301/08C07D301/03
CPCC07D301/03C07D301/08C07D303/48
Inventor何建明裴文刘乘风金崇献
Owner浙江利化新材料科技有限公司