ATE239684T1 - Verfahren zur reinigung von difluormethan - Google Patents

Verfahren zur reinigung von difluormethan

Info

Publication number
ATE239684T1
ATE239684T1 AT01103558T AT01103558T ATE239684T1 AT E239684 T1 ATE239684 T1 AT E239684T1 AT 01103558 T AT01103558 T AT 01103558T AT 01103558 T AT01103558 T AT 01103558T AT E239684 T1 ATE239684 T1 AT E239684T1
Authority
AT
Austria
Prior art keywords
difluoromethane
extractant
hydrogen fluoride
layer
purifying
Prior art date
Application number
AT01103558T
Other languages
English (en)
Inventor
Takaaki Yokoyama
Koichi Yanase
Yasuhiro Suzuki
Original Assignee
Asahi Glass Co 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
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Application granted granted Critical
Publication of ATE239684T1 publication Critical patent/ATE239684T1/de

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00Preparation of halogenated hydrocarbons
    • C07C17/38Separation; Purification; Stabilisation; Use of additives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/582Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AT01103558T 2000-02-22 2001-02-19 Verfahren zur reinigung von difluormethan ATE239684T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000044967A JP2001233808A (ja) 2000-02-22 2000-02-22 ジフルオロメタンの精製方法

Publications (1)

Publication Number Publication Date
ATE239684T1 true ATE239684T1 (de) 2003-05-15

Family

ID=18567641

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01103558T ATE239684T1 (de) 2000-02-22 2001-02-19 Verfahren zur reinigung von difluormethan

Country Status (7)

Country Link
US (1) US6297412B1 (de)
EP (1) EP1127863B1 (de)
JP (1) JP2001233808A (de)
KR (1) KR20010082755A (de)
CN (1) CN1310158A (de)
AT (1) ATE239684T1 (de)
DE (1) DE60100237T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7189311B2 (en) * 2001-03-23 2007-03-13 Honeywell International Inc. Purification of difluoromethane
CN115010576B (zh) * 2022-07-02 2024-12-20 浙江三美化工股份有限公司 一种二氟甲烷的制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640086A (en) * 1951-12-15 1953-05-26 Du Pont Process for separating hydrogen fluoride from chlorodifluoromethane
JP3569921B2 (ja) * 1996-08-27 2004-09-29 ダイキン工業株式会社 ジフルオロメタンの製造方法

Also Published As

Publication number Publication date
KR20010082755A (ko) 2001-08-30
CN1310158A (zh) 2001-08-29
DE60100237D1 (de) 2003-06-12
EP1127863B1 (de) 2003-05-07
JP2001233808A (ja) 2001-08-28
US6297412B1 (en) 2001-10-02
EP1127863A1 (de) 2001-08-29
US20010021793A1 (en) 2001-09-13
DE60100237T2 (de) 2004-02-19

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties