GB853297A - A process for the manufacture of aliphatic fluorine compounds - Google Patents

A process for the manufacture of aliphatic fluorine compounds

Info

Publication number
GB853297A
GB853297A GB3791/57A GB379157A GB853297A GB 853297 A GB853297 A GB 853297A GB 3791/57 A GB3791/57 A GB 3791/57A GB 379157 A GB379157 A GB 379157A GB 853297 A GB853297 A GB 853297A
Authority
GB
United Kingdom
Prior art keywords
prepared
reaction
trichlorethylene
halides
fluorine compounds
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
Application number
GB3791/57A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB853297A publication Critical patent/GB853297A/en
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Aliphatic fluorine compounds are prepared by reacting a halogenated aliphatic hydrocarbon which contains at least one halogen atom, other than fluorine, with hydrogen fluoride in the presence of an antimony compound and metallic aluminium. Suitable catalysts are antimonous halides in the presence of chlorine or antimonic halides. The reaction may be conveniently carried out in an aluminium vessel which is found to accelerate the reaction rate and also to be corroded less easily than steel or copper vessels. The reaction may also be activated by the addition of 0,1 to 10% of an arsenic halide e.g. the trichloride or trifluoride based on the weight of the antimony compound. In examples (1) trifluorodichloroethane and difluorotrichloroethane are prepared from pentachlaroethane (2) (3) tetrafluorodichloroethane and trifluorotrichloroethane are prepared from hexachloroethane, (4) methylene difluoride is prepared from methylene dichloride. (5) 1:1:1-trifluoroethyl chloride is prepared from trichlorethylene The trichlorethylene may be replaced by 1:2-dichlor-ethylene, 2-fluoroheptachloropropane or 1:2:3:4-tretrafluorohexachlorobutane. Specifications 462,969 and 706,598 are referred to.
GB3791/57A 1956-02-03 1957-02-04 A process for the manufacture of aliphatic fluorine compounds Expired GB853297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE853297X 1956-02-03

Publications (1)

Publication Number Publication Date
GB853297A true GB853297A (en) 1960-11-02

Family

ID=6787511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3791/57A Expired GB853297A (en) 1956-02-03 1957-02-04 A process for the manufacture of aliphatic fluorine compounds

Country Status (3)

Country Link
DE (1) DE1020968B (en)
FR (1) FR1166833A (en)
GB (1) GB853297A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823412A1 (en) * 1996-08-06 1998-02-11 Asahi Glass Company Ltd. Method for producing a hydrogen-containing fluorinated alkane
WO2003054241A2 (en) * 2001-12-21 2003-07-03 Solvay Fluor Und Derivate Gmbh Novel use of alloys

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53135909A (en) * 1977-04-28 1978-11-28 Bayer Ag Process for preparing 1*1*11trifluoroo22chloroethane
DE69628060T2 (en) 1995-02-10 2003-12-18 Daikin Ind Ltd Process for the preparation of difluoromethane and difluorochloromethane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823412A1 (en) * 1996-08-06 1998-02-11 Asahi Glass Company Ltd. Method for producing a hydrogen-containing fluorinated alkane
US6124511A (en) * 1996-08-06 2000-09-26 Asahi Glass Company Ltd. Method for producing a hydrogen-containing fluorinated alkane
KR100481761B1 (en) * 1996-08-06 2005-05-16 아사히 가라스 가부시키가이샤 Method for producing a hydrogen-containing fluorinated alkane
WO2003054241A2 (en) * 2001-12-21 2003-07-03 Solvay Fluor Und Derivate Gmbh Novel use of alloys
WO2003054241A3 (en) * 2001-12-21 2003-10-30 Solvay Fluor & Derivate Novel use of alloys

Also Published As

Publication number Publication date
FR1166833A (en) 1958-11-17
DE1020968B (en)

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