DE60231010D1 - Verfahren zur herstellung von difluormethan - Google Patents

Verfahren zur herstellung von difluormethan

Info

Publication number
DE60231010D1
DE60231010D1 DE60231010T DE60231010T DE60231010D1 DE 60231010 D1 DE60231010 D1 DE 60231010D1 DE 60231010 T DE60231010 T DE 60231010T DE 60231010 T DE60231010 T DE 60231010T DE 60231010 D1 DE60231010 D1 DE 60231010D1
Authority
DE
Germany
Prior art keywords
fluorination
catalyst
preparing difluoromethane
difluoromethane
preparing
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
DE60231010T
Other languages
English (en)
Inventor
Rajasekaran Ramanathan
Rajdeep Anand
Anurag Jain
Jampani Madhusudana Rao
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.)
SRF Ltd
Original Assignee
SRF 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 SRF Ltd filed Critical SRF Ltd
Priority claimed from PCT/IN2002/000148 external-priority patent/WO2004007410A1/en
Application granted granted Critical
Publication of DE60231010D1 publication Critical patent/DE60231010D1/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
    • C07C17/093—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
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/395—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification of at least one compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
DE60231010T 2002-07-10 2002-07-10 Verfahren zur herstellung von difluormethan Expired - Fee Related DE60231010D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2002/000148 WO2004007410A1 (en) 2002-07-10 2002-07-10 A process for the production of difluoromethane

Publications (1)

Publication Number Publication Date
DE60231010D1 true DE60231010D1 (de) 2009-03-12

Family

ID=34259912

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60231010T Expired - Fee Related DE60231010D1 (de) 2002-07-10 2002-07-10 Verfahren zur herstellung von difluormethan

Country Status (6)

Country Link
EP (1) EP1542949B1 (de)
JP (1) JP2005532408A (de)
CN (1) CN100372821C (de)
AT (1) ATE421497T1 (de)
AU (1) AU2002317470A1 (de)
DE (1) DE60231010D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527414B (zh) * 2011-12-28 2013-01-02 临海市利民化工有限公司 一种制备二氟甲烷或二氟一氯甲烷的氟化催化剂及制备方法和应用

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744148A (en) * 1952-02-04 1956-05-01 Dow Chemical Co Process for fluorination of haloalkanes using a hydrogen fluoride activated catalyst containing alumina, a metal fluoride and basic aluminum fluoride
US2745886A (en) * 1955-01-31 1956-05-15 Dow Chemical Co Process for fluorinating aliphatic halohydrocarbons with a chromium fluoride catalyst and process for preparing the catalyst
EP0508631A1 (de) * 1991-04-08 1992-10-14 Imperial Chemical Industries Plc Herstellung von Fluorkohlenwasserstoffen
JP3605831B2 (ja) * 1992-10-05 2004-12-22 ダイキン工業株式会社 ハロゲン化炭化水素のフッ素化方法
JPH06263657A (ja) * 1993-03-11 1994-09-20 Showa Denko Kk ジフルオロメタンの製造法
GB9404715D0 (en) * 1993-03-24 1994-04-27 Ici Plc Production of difluoromethane
ES2111207T3 (es) * 1993-06-18 1998-03-01 Showa Denko Kk Catalizador de fluoracion y procedimiento de fluoracion.
JPH0717882A (ja) * 1993-07-05 1995-01-20 Daikin Ind Ltd ジフルオロメタンの製造方法
JPH0733691A (ja) * 1993-07-21 1995-02-03 Showa Denko Kk ジフルオロメタンの製造方法
FR2736048B1 (fr) * 1995-06-27 1997-08-01 Atochem Elf Sa Synthese du difluoromethane
FR2736050B1 (fr) * 1995-06-29 1997-08-01 Atochem Elf Sa Procede de fabrication du difluoromethane
US5763708A (en) * 1995-09-20 1998-06-09 Allied Signal Inc. Process for the production of difluoromethane
AU777841B2 (en) * 2000-03-31 2004-11-04 Council Of Scientific And Industrial Research A process for the preparation of 1,1,1,2-tetrafluoroethane

Also Published As

Publication number Publication date
EP1542949B1 (de) 2009-01-21
ATE421497T1 (de) 2009-02-15
CN1668558A (zh) 2005-09-14
EP1542949A1 (de) 2005-06-22
EP1542949A4 (de) 2006-05-17
JP2005532408A (ja) 2005-10-27
CN100372821C (zh) 2008-03-05
AU2002317470A1 (en) 2004-02-02

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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