ATE189673T1 - Verfahren zur herstellung von difluormethan - Google Patents

Verfahren zur herstellung von difluormethan

Info

Publication number
ATE189673T1
ATE189673T1 AT95921110T AT95921110T ATE189673T1 AT E189673 T1 ATE189673 T1 AT E189673T1 AT 95921110 T AT95921110 T AT 95921110T AT 95921110 T AT95921110 T AT 95921110T AT E189673 T1 ATE189673 T1 AT E189673T1
Authority
AT
Austria
Prior art keywords
reaction
difluoromethane
under
temperature
hydrogen fluoride
Prior art date
Application number
AT95921110T
Other languages
English (en)
Inventor
Takehide Tsuda
Yasufu Yamada
Takashi Shibanuma
Original Assignee
Daikin Ind 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 Daikin Ind Ltd filed Critical Daikin Ind Ltd
Application granted granted Critical
Publication of ATE189673T1 publication Critical patent/ATE189673T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
    • C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/21—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms with simultaneous increase of the number of halogen atoms
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C19/00—Acyclic saturated compounds containing halogen atoms
    • C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AT95921110T 1994-06-20 1995-06-07 Verfahren zur herstellung von difluormethan ATE189673T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13727594 1994-06-20
PCT/JP1995/001122 WO1995035271A1 (en) 1994-06-20 1995-06-07 Process for producing difluoromethane

Publications (1)

Publication Number Publication Date
ATE189673T1 true ATE189673T1 (de) 2000-02-15

Family

ID=15194873

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95921110T ATE189673T1 (de) 1994-06-20 1995-06-07 Verfahren zur herstellung von difluormethan

Country Status (12)

Country Link
US (1) US5744659A (de)
EP (1) EP0767158B1 (de)
JP (1) JP3240619B2 (de)
KR (1) KR100344863B1 (de)
CN (1) CN1090160C (de)
AT (1) ATE189673T1 (de)
AU (1) AU697434B2 (de)
BR (1) BR9508062A (de)
CA (1) CA2193634C (de)
DE (1) DE69515036T2 (de)
ES (1) ES2143634T3 (de)
WO (1) WO1995035271A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538165B1 (en) 1995-02-10 2003-03-25 Daikin Industries Ltd. Process for producing difluoromethane and difluorochloromethane
US6268540B1 (en) 1996-06-24 2001-07-31 Alliedsignal Inc. Catalyst and process for the fluorination of hydrohalomethanes
BE1010626A3 (fr) * 1996-09-16 1998-11-03 Solvay Procede pour la preparation de difluoromethane.
JP3367861B2 (ja) 1997-04-15 2003-01-20 セントラル硝子株式会社 ３，３−ジクロロ−１，１，１−トリフルオロアセトンの製造方法
AU733972B2 (en) * 1997-07-25 2001-05-31 Honeywell International, Inc. Cleaning vapor compression systems
WO1999025670A1 (en) * 1997-11-18 1999-05-27 Alliedsignal Inc. Process for the preparation of difluoromethane
BR9815103A (pt) * 1997-11-21 2001-08-21 Allied Signal Inc Processo para a produção de hidrofluorcarbonos
EP1051376B1 (de) * 1998-01-16 2004-11-17 AlliedSignal Inc. Verfahren zur herstellung von organischen fluorverbindungen
US6153802A (en) * 1998-05-08 2000-11-28 Alliedsignal Inc. Liquid-fluorination system and method
US7094934B2 (en) 2000-02-02 2006-08-22 Daikin Industries, Ltd. Production process of hydrofluorocarbons
DE60235833D1 (de) 2001-12-21 2010-05-12 Chemtura Corp Verfahren und vorrichtung zur herstellung von decabromdiphenylalkanen
WO2006014558A2 (en) * 2004-07-06 2006-02-09 Kenet, Inc. Voltage random access memory (vram)
US20060036117A1 (en) * 2004-08-10 2006-02-16 Mitchel Cohn Catalyst preparation processes, catalyst regeneration processes, halocarbon production processes, and halocarbon production systems
CN1313423C (zh) * 2005-01-27 2007-05-02 鹰鹏化工有限公司 分段连续氟化制备二氟甲烷的方法
FR2994430B1 (fr) * 2012-08-10 2014-12-19 Arkema France Procede de production du difluoromethane
CN104909981A (zh) * 2015-06-02 2015-09-16 江苏三美化工有限公司 一种提高二氟甲烷生产过程中反应选择性的方法
CN105001039A (zh) * 2015-06-02 2015-10-28 江苏三美化工有限公司 一种提高r32反应釜使用寿命的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749375A (en) * 1956-06-05 Fluorination
US2005711A (en) * 1931-05-20 1935-06-18 Kinetic Chemicals Inc Preparation of organic fluorine compounds
US2749374A (en) * 1950-02-24 1956-06-05 Dow Chemical Co Production of methylene fluoride
JPS52103392A (en) * 1976-02-26 1977-08-30 Daikin Ind Ltd Fluorination catalyst for haloganated hydrocarbon
US4138355A (en) * 1976-08-10 1979-02-06 Halocarbon Products Corporation Fluorine substitution in 1,1,1-trihalomethanes
US5208395A (en) * 1992-04-06 1993-05-04 Elf Atochem North America, Inc. Manufacture of hydrofluorocarbons
JPH0717882A (ja) * 1993-07-05 1995-01-20 Daikin Ind Ltd ジフルオロメタンの製造方法
KR960022411A (ko) * 1994-12-28 1996-07-18 남경희 디플루오로메탄의 제조방법

Also Published As

Publication number Publication date
CN1090160C (zh) 2002-09-04
WO1995035271A1 (en) 1995-12-28
BR9508062A (pt) 1997-08-12
US5744659A (en) 1998-04-28
JP3240619B2 (ja) 2001-12-17
ES2143634T3 (es) 2000-05-16
KR100344863B1 (ko) 2002-09-18
CA2193634C (en) 2006-08-29
EP0767158A1 (de) 1997-04-09
DE69515036D1 (de) 2000-03-16
AU697434B2 (en) 1998-10-08
CA2193634A1 (en) 1995-12-28
AU2629195A (en) 1996-01-15
EP0767158B1 (de) 2000-02-09
EP0767158A4 (de) 1997-07-30
DE69515036T2 (de) 2000-07-13
CN1168660A (zh) 1997-12-24

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Legal Events

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