DE69515036D1 - Verfahren zur herstellung von difluormethan - Google Patents

Verfahren zur herstellung von difluormethan

Info

Publication number
DE69515036D1
DE69515036D1 DE69515036T DE69515036T DE69515036D1 DE 69515036 D1 DE69515036 D1 DE 69515036D1 DE 69515036 T DE69515036 T DE 69515036T DE 69515036 T DE69515036 T DE 69515036T DE 69515036 D1 DE69515036 D1 DE 69515036D1
Authority
DE
Germany
Prior art keywords
reaction
under
difluoromethane
temperature
hydrogen fluoride
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 - Lifetime
Application number
DE69515036T
Other languages
English (en)
Other versions
DE69515036T2 (de
Inventor
Takehide Tsuda
Yasufu Yamada
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
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Application granted granted Critical
Publication of DE69515036D1 publication Critical patent/DE69515036D1/de
Publication of DE69515036T2 publication Critical patent/DE69515036T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
DE69515036T 1994-06-20 1995-06-07 Verfahren zur herstellung von difluormethan Expired - Lifetime DE69515036T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13727594 1994-06-20
PCT/JP1995/001122 WO1995035271A1 (fr) 1994-06-20 1995-06-07 Procede de production de difluoromethane

Publications (2)

Publication Number Publication Date
DE69515036D1 true DE69515036D1 (de) 2000-03-16
DE69515036T2 DE69515036T2 (de) 2000-07-13

Family

ID=15194873

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69515036T Expired - Lifetime DE69515036T2 (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 (16)

* 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.
KR100592966B1 (ko) * 1997-07-25 2006-06-23 알라이드시그날 인코포레이티드 증기 압축 시스템 세척 방법
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
DE69921964D1 (de) * 1998-01-16 2004-12-23 Allied Signal Inc Verfahren zur herstellung von organischen fluorverbindungen
US6153802A (en) * 1998-05-08 2000-11-28 Alliedsignal Inc. Liquid-fluorination system and method
ES2334490T3 (es) 2000-02-02 2010-03-11 Daikin Industries, Ltd. Proceso para producir un hidrocarburo fluorado.
CN100448821C (zh) * 2001-12-21 2009-01-07 帕布服务公司 生产十溴二苯基烷烃的方法与装置
CA2573147C (en) * 2004-07-06 2013-03-26 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
EP0767158A4 (de) 1997-07-30
AU697434B2 (en) 1998-10-08
ES2143634T3 (es) 2000-05-16
US5744659A (en) 1998-04-28
CN1090160C (zh) 2002-09-04
DE69515036T2 (de) 2000-07-13
BR9508062A (pt) 1997-08-12
CA2193634C (en) 2006-08-29
JP3240619B2 (ja) 2001-12-17
KR100344863B1 (ko) 2002-09-18
CN1168660A (zh) 1997-12-24
WO1995035271A1 (fr) 1995-12-28
AU2629195A (en) 1996-01-15
ATE189673T1 (de) 2000-02-15
EP0767158B1 (de) 2000-02-09
CA2193634A1 (en) 1995-12-28
EP0767158A1 (de) 1997-04-09

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