DE60100237D1 - Verfahren zur Reinigung von Difluormethan - Google Patents

Verfahren zur Reinigung von Difluormethan

Info

Publication number
DE60100237D1
DE60100237D1 DE60100237T DE60100237T DE60100237D1 DE 60100237 D1 DE60100237 D1 DE 60100237D1 DE 60100237 T DE60100237 T DE 60100237T DE 60100237 T DE60100237 T DE 60100237T DE 60100237 D1 DE60100237 D1 DE 60100237D1
Authority
DE
Germany
Prior art keywords
difluoromethane
extractant
hydrogen fluoride
layer
purification
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
DE60100237T
Other languages
English (en)
Other versions
DE60100237T2 (de
Inventor
Takaaki Yokoyama
Koichi Yanase
Yasuhiro Suzuki
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.)
AGC Inc
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
Publication of DE60100237D1 publication Critical patent/DE60100237D1/de
Application granted granted Critical
Publication of DE60100237T2 publication Critical patent/DE60100237T2/de
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
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials
DE60100237T 2000-02-22 2001-02-19 Verfahren zur Reinigung von Difluormethan Expired - Fee Related DE60100237T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000044967 2000-02-22
JP2000044967A JP2001233808A (ja) 2000-02-22 2000-02-22 ジフルオロメタンの精製方法

Publications (2)

Publication Number Publication Date
DE60100237D1 true DE60100237D1 (de) 2003-06-12
DE60100237T2 DE60100237T2 (de) 2004-02-19

Family

ID=18567641

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60100237T Expired - Fee Related DE60100237T2 (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
CN115010576A (zh) * 2022-07-02 2022-09-06 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
ES2167771T3 (es) * 1996-08-27 2002-05-16 Daikin Ind Ltd Procedimiento de fabricacion de difluorometano.

Also Published As

Publication number Publication date
US6297412B1 (en) 2001-10-02
KR20010082755A (ko) 2001-08-30
JP2001233808A (ja) 2001-08-28
EP1127863B1 (de) 2003-05-07
EP1127863A1 (de) 2001-08-29
CN1310158A (zh) 2001-08-29
ATE239684T1 (de) 2003-05-15
DE60100237T2 (de) 2004-02-19
US20010021793A1 (en) 2001-09-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee