Method for synchronously preparing hydrofluoroether and fluorine-containing olefine ether

A technology for fluorine-containing alkenyl ether and hydrofluoroether is applied in the field of simultaneous preparation of hydrofluoroether and fluorine-containing alkene ether, which can solve the problems of inability to respond to market demand in time, energy consumption recovery, high cost, and single product of hydrofluoroether, etc. Achieve low cost, reduce equipment investment and reduce energy consumption

Inactive Publication Date: 2016-08-31
JUHUA GROUP TECH CENT
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that only a single product of hydrofluoroether can be obtained, the operation flexibility is small, and it cannot respond to market demand in time
The disadvantage is that only a single product of hydrofluoroether can be obtained, the operation flexibility is small, and the market demand cannot be responded to in a timely manner, and the boiling point of the solvent is high, and the recovery energy consumption and cost are high
No solvent or fluorine-containing catalyst is used in the reaction process. The disadvantage is that only a single product of hydrofluoroether can be obtained, the operation flexibility is small, the market demand cannot be responded to in time, and the production cost is high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put 1 mole of tetrafluoropropanol, 2 moles of DMSO, and 1 mole of NaOH into a 1L stainless steel high-pressure reaction kettle. Under stirring, heat up to 70°C, and continuously introduce tetrafluoroethylene into the gas phase for reaction. During the reaction, adjust the ventilation of tetrafluoroethylene The amount of feed keeps the pressure in the reactor at 0.5 MPa, and when 1.2 moles of tetrafluoroethylene is fed, the feed of tetrafluoroethylene is stopped to end the reaction. 0.373 moles of tetrafluoropropyl tetrafluoroethyl ether and 0.614 moles of trifluoropropenyl tetrafluoroethyl ether were separated by distillation, with a yield of 98.4%.

Embodiment 2

[0029] Put 1 mole of trifluoroethanol, 2.5 moles of NMP, and 0.1 mole of KOH into a 1L stainless steel autoclave, heat up to 50°C under stirring, and continuously introduce tetrafluoroethylene into the gas phase for reaction. During the reaction, adjust the introduction of tetrafluoroethylene Keep the pressure in the reactor at 0.2 MPa, stop feeding tetrafluoroethylene after 1.1 moles of tetrafluoroethylene is fed, and end the reaction. 0.571 moles of trifluoroethyl tetrafluoroethyl ether and 0.415 moles of trifluorovinyl trifluoroethyl ether were separated by distillation, with a yield of 98.6%.

Embodiment 3

[0031] Put 1 mole of ethanol, 1 mole of DMF, and 1.2 moles of KOH into a 1L stainless steel high-pressure reaction kettle. Under stirring, heat up to 100°C, and continuously introduce tetrafluoroethylene into the gas phase for reaction. The pressure in the reactor was 0.8MPa, and when 1 mole of tetrafluoroethylene was introduced, the introduction of tetrafluoroethylene was stopped to end the reaction. 0.439 moles of tetrafluoroethyl ether and 0.537 moles of trifluorovinyl ether were separated by distillation, with a yield of 97.6%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for synchronously preparing hydrofluoroether and fluorine-containing olefine ether. The method for synchronously preparing the hydrofluoroether and the fluorine-containing olefine ether comprises the following steps of making fluorine-containing olefine react with alcohol in a solvent in the presence of a catalyst, and controlling reaction pressure to be 0.2MPa to 1.5MPa through regulating the introduction amount of the fluorine-containing olefine in a reaction process, wherein the molar ratio of the alcohol to the solvent to the catalyst is 1: (0.5 to 3): (0.1 to 1.5), and a reaction temperature is 50 DEG C to 150 DEG C; when the molar ratio of the introduction amount of the fluorine-containing olefine to the alcohol is (1.0 to 1.2): 1, terminating a reaction, and carrying out distillation separation to obtain products of the hydrofluoroether and the fluorine-containing olefine ether respectively. The method for synchronously preparing the hydrofluoroether and the fluorine-containing olefine ether has the advantages of being simple in technique, high in operating flexibility, low in cost, green and environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of fluorine fine chemical industry, in particular to a method for simultaneously preparing hydrofluoroether and fluorine-containing alkenyl ether. Background technique [0002] With the improvement of environmental protection requirements, the protection of the atmospheric ozone layer is increasingly strengthened. Deadlines for restricted use and phase-out of fluorotrichloromethane (R-11), difluorodichloromethane (R-11), difluorochloromethane (R-22) refrigerants, foaming agents, and fluorinated cleaning agents is approaching, there is an urgent need for environmentally friendly refrigerants, blowing agents and electronic cleaners that can protect the ozone layer. Fluorine-containing ethers, especially hydrofluoroethers and fluorine-containing alkenyl ethers, have zero ozone-depleting potential (ODP), low global warming potential (GWP) and short atmospheric residence time, and have little impact on the envir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/12C07C41/06C07C43/15C07C41/16
CPCC07C41/06C07C41/16
Inventor 耿为利周强王宗令吴庆郑磊
Owner JUHUA GROUP TECH CENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap