CA2197171C - Methode pour preparer le pentafluoroethane - Google Patents

Methode pour preparer le pentafluoroethane Download PDF

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Publication number
CA2197171C
CA2197171C CA002197171A CA2197171A CA2197171C CA 2197171 C CA2197171 C CA 2197171C CA 002197171 A CA002197171 A CA 002197171A CA 2197171 A CA2197171 A CA 2197171A CA 2197171 C CA2197171 C CA 2197171C
Authority
CA
Canada
Prior art keywords
extractant
mixture
hfc
pentafluoroethane
cfc
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.)
Expired - Fee Related
Application number
CA002197171A
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English (en)
Other versions
CA2197171A1 (fr
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
Daikin Industries Ltd
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/ja
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority claimed from PCT/JP1995/000874 external-priority patent/WO1996005158A1/fr
Publication of CA2197171A1 publication Critical patent/CA2197171A1/fr
Application granted granted Critical
Publication of CA2197171C publication Critical patent/CA2197171C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00Preparation of halogenated hydrocarbons
    • C07C17/38Separation; Purification; Stabilisation; Use of additives
    • C07C17/383Separation; Purification; Stabilisation; Use of additives by distillation
    • C07C17/386Separation; Purification; Stabilisation; Use of additives by distillation with auxiliary compounds

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

Abstract

L'invention concerne un procédé pour séparer efficacement le pentafluoroéthane (HFC-125) lorsqu'il est en mélange avec du chloropentafluoroéthane (CFC-115). Le procédé pour obtenir le HFC-125 hautement concentré consiste à effectuer une distillation extractive d'un mélange de HFC-125 et de CFC-115 en utilisant du méthanol, de l'éthanol, du butanol, de l'alcool propylique, du pentafluoropropanol, du tétrafluoropropanol ou de l'acétone comme solvant d'extraction pour obtenir le CFC-115 en tant que distillat et un mélange de HFC-125 avec le solvant d'extraction en tant qu'huile. Ensuite, on distille le mélange pour séparer le HFC-125 du solvant d'extraction et on réutilise ce dernier dans la distillation extractive.
CA002197171A 1994-08-17 1995-05-08 Methode pour preparer le pentafluoroethane Expired - Fee Related CA2197171C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP193066/1994 1994-08-17
JP19306694A JP2827912B2 (ja) 1994-04-20 1994-08-17 ペンタフルオロエタンの製造方法
PCT/JP1995/000874 WO1996005158A1 (fr) 1994-08-17 1995-05-08 Procede pour produire du pentafluoroethane

Publications (2)

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

Family

ID=37392716

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002197171A Expired - Fee Related CA2197171C (fr) 1994-08-17 1995-05-08 Methode pour preparer le pentafluoroethane

Country Status (1)

Country Link
CA (1) CA2197171C (fr)

Also Published As

Publication number Publication date
CA2197171A1 (fr) 1996-02-22

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