Check patentability & draft patents in minutes with Patsnap Eureka AI!

A kind of perfluoropolyether and preparation method thereof

A technology of perfluoropolyether and perfluorocyclic ether, which is applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical processes, etc., can solve the problems of reduced reaction efficiency, blurred glass corrosion, and strong corrosion of glass And other problems, to achieve the effect of high reaction efficiency, good product quality, and stable temperature control

Active Publication Date: 2022-07-19
浙江创氟高科新材料有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (2) Perfluoropolyether intermediates generally contain more acyl fluoride groups. At the same time, carbonyl fluoride and other substances will be generated during the process. These substances are easy to form HF when they meet water, and HF is extremely corrosive to glass. UV Photodecomposition of peroxides will cause corrosion and blurring of the external glass of the light source, reducing reaction efficiency

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of perfluoropolyether and preparation method thereof
  • A kind of perfluoropolyether and preparation method thereof
  • A kind of perfluoropolyether and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The reaction solution obtained by the photo-initiated reaction of hexafluoropropene, oxygen and solvent perfluorocyclic ether enters a degassing tower, degassed at 30 ° C for 1 hour, and the by-products (low molecular weight perfluoroalkyl acyl fluoride, etc.) The oxygen after the reaction is removed. The degassed reaction solution (with a perfluoropolyether intermediate product content of 23.33 wt%) was fed into a corning "heart-shaped" silicon carbide microchannel at a rate of 30 g / min (perfluoropolyether intermediate product feed rate 7 g / min) with a metering pump In the reactor, tetrafluoroethylene monomer (A=F) was fed at the same aeration rate of 2.0 g / min. The microchannel reactor includes 1 mixing module, 5 reaction modules, and 6 heat transfer modules. The channel equivalent diameter of the mixing module is 100 μm, the channel equivalent diameter of the reaction module is 100 μm, and the channel equivalent diameter of the heat transfer module is 100 μm. Contro...

Embodiment 2

[0039]The reaction solution obtained by the photo-initiated reaction of hexafluoropropene, oxygen and solvent perfluorocyclic ether enters a degassing tower, degassed at 30 ° C for 1 hour, and the by-products (low molecular weight perfluoroalkyl acyl fluoride, etc.) The oxygen after the reaction is removed. The degassed reaction solution (with a perfluoropolyether intermediate product content of 23.33 wt%) was fed into a corning "heart-shaped" silicon carbide microchannel at a rate of 30 g / min (perfluoropolyether intermediate product feed rate 7 g / min) with a metering pump In the reactor, tetrafluoroethylene monomer (A=F) was fed at the same aeration rate of 2.33 g / min. The microchannel reactor includes 1 mixing module, 6 reaction modules, and 3 heat transfer modules. The channel equivalent diameter of the mixing module is 500 μm, the channel equivalent diameter of the reaction module is 500 μm, and the channel equivalent diameter of the heat transfer module is 500 μm. The re...

Embodiment 3～9

[0041] The reaction liquid obtained after the photo-initiated reaction of hexafluoropropylene, oxygen and solvent enters the degassing tower, degassed at 30°C for 1 hour, and degassed by-products (low molecular weight perfluoroalkyl acyl fluoride, etc.) and unreacted oxygen remove. The degassed reaction solution was fed into the corning "heart-shaped" silicon carbide microchannel reactor at a rate of 30 g / min by a metering pump, and different fluorine-containing monomers (A were different groups) were introduced at a certain rate at the same time. The microchannel reactor includes 1 mixing module, 7 reaction modules, and 5 heat transfer modules. The channel equivalent diameter of the mixing module is 1000 μm, the channel equivalent diameter of the reaction module is 1000 μm, and the channel equivalent diameter of the heat transfer module is 1000 μm. A certain reaction temperature and a certain reaction pressure are controlled. The reaction conditions and results are shown in ...

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 perfluoropolyether and a preparation method thereof. A reaction solution containing a perfluoropolyether intermediate product obtained by oxidative polymerization of a fluorine-containing olefin is degassed and then subjected to a polymerization reaction with a fluorine-containing monomer to obtain a perfluoropolyether. The reaction product is desolvated and separated from the solvent to obtain a perfluoropolyether product. The invention has the advantages of high efficiency, continuity and safety.

Description

technical field [0001] The invention belongs to the field of organic chemistry, in particular to a perfluoropolyether and a preparation method thereof. Background technique [0002] Perfluoropolyether (PFPE) is a polymer with only three elements, C, F, and O, and is liquid at room temperature. There are stronger C-F bonds in PFPE molecules instead of C-H bonds in hydrocarbons, and due to the existence of C-O and C-C strong covalent bonds, as well as the neutrality of PFPE molecules, PFPE has high chemical stability and oxidative stability. and good chemical inertness and insulating properties. This type of perfluoropolyether has a wide range of potential uses. For example, when the end group is fluorinated to form a stable -CF3 group, it can be used as a perfluoropolyether oil; when the end group is hydrolyzed to form -COOH, it can be used as a Emulsifier, widely used in oil field, paint, fluoropolymer emulsifier, etc. There are two main preparation methods of perfluoropo...

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 Patents(China)
IPC IPC(8): C08F114/26C08F116/14C08F114/24C08F2/01B01J19/00
CPCC08F114/26C08F116/14C08F114/24C08F2/01B01J19/0093
Inventor 吴庆耿为利郑磊马利勇
Owner 浙江创氟高科新材料有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com