CA2197171A1 - Process for producing pentafluoroethane - Google Patents

Process for producing pentafluoroethane

Info

Publication number
CA2197171A1
CA2197171A1 CA002197171A CA2197171A CA2197171A1 CA 2197171 A1 CA2197171 A1 CA 2197171A1 CA 002197171 A CA002197171 A CA 002197171A CA 2197171 A CA2197171 A CA 2197171A CA 2197171 A1 CA2197171 A1 CA 2197171A1
Authority
CA
Canada
Prior art keywords
hfc
mixture
cfc
extractant
extractive distillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002197171A
Other languages
French (fr)
Other versions
CA2197171C (en
Inventor
Satoru Kohno
Takashi Shibanuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP19306694A external-priority patent/JP2827912B2/en
Application filed by Individual filed Critical Individual
Priority claimed from PCT/JP1995/000874 external-priority patent/WO1996005158A1/en
Publication of CA2197171A1 publication Critical patent/CA2197171A1/en
Application granted granted Critical
Publication of CA2197171C publication Critical patent/CA2197171C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
    • C07C17/386—Separation; Purification; Stabilisation; Use of additives by distillation with auxiliary compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

There is provided a process of effectively separating pentafluoroethane (HFC-125) out of a mixture of HFC and chloropentafluoroethane (CFC-115). When the mixture of HFC-125 and CFC-115 is subjected to extractive distillation so as to obtain concentrated HFC-125, methanol, ethanol, butanol, propyl alcohol, pentafluoropropanol, tetrafluoropropanol or acetone is used as an extractant, whereby CFC-115 is obtained as a distillate product and a mixture of HFC-125 and the extractant as a bottom product is obtained. Then, the extractant is separated from HFC-125 by distilling the mixture and re-used in the extractive distillation.
CA002197171A 1994-08-17 1995-05-08 Process for producing pentafluoroethane Expired - Fee Related CA2197171C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP19306694A JP2827912B2 (en) 1994-04-20 1994-08-17 Method for producing pentafluoroethane
JP193066/1994 1994-08-17
PCT/JP1995/000874 WO1996005158A1 (en) 1994-08-17 1995-05-08 Process for producing pentafluoroethane

Publications (2)

Publication Number Publication Date
CA2197171A1 true CA2197171A1 (en) 1996-02-22
CA2197171C CA2197171C (en) 2006-06-20

Family

ID=37392716

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002197171A Expired - Fee Related CA2197171C (en) 1994-08-17 1995-05-08 Process for producing pentafluoroethane

Country Status (1)

Country Link
CA (1) CA2197171C (en)

Also Published As

Publication number Publication date
CA2197171C (en) 2006-06-20

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Legal Events

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