Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous process to produce hexafluoroisopropanol

A technology of hexafluoroisopropanol and hexafluoroacetone, which is applied in the continuous field of preparing hexafluoroisopropanol, and can solve the problems of shortening catalyst life

Inactive Publication Date: 2011-05-11
THE CHEMOURS CO FC LLC
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This temperature rise can cause catalyst bed hot spots, which can lead to by-product formation, including hydrofluoric acid formation, and shorten catalyst life

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
  • Continuous process to produce hexafluoroisopropanol
  • Continuous process to produce hexafluoroisopropanol
  • Continuous process to produce hexafluoroisopropanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0074] The steps for start-up and continuous operation of the preferred method used in the following examples are described. The examples provide the process variables used.

[0075] Said embodiment works with figure 1 performed in a similar reaction system. The mixing equipment 1 is a 1-liter 316 stainless steel autoclave equipped with a stirrer and a heating device, and has a design pressure of 2000 psig (13.9 MPa). HFA was fed to the autoclave with an Isco syringe pump 16, model 1000D. Pump 3 is a Lewa Ecoflow 319 stainless steel diaphragm pump with a design pressure of 1500 psig (10.4 MPa). Reactor 5 was a 16 x 1 inch (40.6 x 2.54 cm) 316 stainless steel Schedule 80 tube. The product was collected in a 17 x 4 inch (43.2 x 10.2 cm) 304 stainless steel gas / liquid separator 25, which had a capacity of 2.25 L. The catalysts used were Engelhard 1 / 16 inch (1.6 mm) 3F Ni-3288E trilobe catalyst (41.5 g) and Johnson Matthey HTC NI500RP trilobe catalyst (39.2 g).

[0076] In t...

Embodiment 2

[0080] Example 2 used the same reactor configuration as above except that the reactor was used in a downflow configuration instead of an upflow configuration. Reactor feed enters at the top of the bed and product exits at the bottom of the bed.

Embodiment 9

[0081] Example 9 used essentially the same upflow reactor configuration, except that a 6 inch (15.2 cm) Johnson Matthey HTC Ni500 1.2RP trilobe catalyst was used, having a total weight of 39.16 g.

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

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A continuous process for producing hexafluoroisopropanol is provided which comprises contacting hexafluoroacetone with hexafluoroisopropanol and hydrogen to produce a liquid feed stream; introducing the liquid feed stream to a reactor containing an immobilized hydrogenation catalyst to convert the hexafluoroacetone to hexafluoroisopropanol and provide a product stream; and recovering at least a portion of the hexafluoroisopropanol from the product stream. Preferably a portion of the product stream is recycled. The reactor can be a packed bed or stirred tank reactor.

Description

Background of the invention [0001] Hexafluoroisopropanol (1,1,1,3,3,3-hexafluoro-2-propanol, abbreviated herein as HFIP) is used as an intermediate in pharmaceuticals and agrochemicals, as a solvent or in electronic devices Detergent, and used in analytical applications due to its ability to dissolve a wide variety of polymers. HFIP exhibits strong hydrogen bonding and will bind and dissolve most molecules with accepting sites such as oxygen, double bonds, or amine groups. Forms stable distillable complexes with many ethers or amines due to strong hydrogen bonds. HFIP is soluble in water and most organic solvents. It is a volatile (boiling point 58.2° C.) and polar substance with high density, low viscosity and low surface tension. HFIP is transparent to ultraviolet light and has a low refractive index. [0002] Hexafluoroisopropanol (HFIP) is typically produced by hydrogenation of hexafluoroacetone (HFA) and / or HFA hydrate, for example using a batch reactor containing a s...

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): C07C29/145C07C31/38
CPCC07C29/145C07C31/38
Inventor S·M·蒂里J·J·黑格多恩J·A·舒尔茨T·M·莱布S·H·沃尔夫S·K·森古普塔G·P·尚克维茨
Owner THE CHEMOURS CO FC LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com