GB823998A - Dehydrochorination process - Google Patents

Dehydrochorination process

Info

Publication number
GB823998A
GB823998A GB3745756A GB3745756A GB823998A GB 823998 A GB823998 A GB 823998A GB 3745756 A GB3745756 A GB 3745756A GB 3745756 A GB3745756 A GB 3745756A GB 823998 A GB823998 A GB 823998A
Authority
GB
United Kingdom
Prior art keywords
chlorodifluoroethane
give
carbon atom
copper
dehydrochorination
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
GB3745756A
Inventor
Russell Michael Mantell
William Siddall Barnhart
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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
Priority to US420452A priority Critical patent/US2774799A/en
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to GB3745756A priority patent/GB823998A/en
Publication of GB823998A publication Critical patent/GB823998A/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
    • C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Chlorofluoroalkanes containing at least one hydrogen atom on a carbon atom adjacent to a carbon atom having a chlorine atom are dehydrochlorinated to give the corresponding fluoroalkene by maintaining them at a temperature between 500 DEG C. and 730 DEG C. for between 1 and 60 seconds in the presence of a copper catalyst. Preferably 1:1:1-chlorodifluoroethane or 1-chloro-2:2-difluoroethane is treated to give vinylidene fluoride, and 1:1-dichloro-1:2:2 -trifluorethane gives trifluorochloroethylene. Specified catalysts include metallic copper, brass and copper chloride supported on magnesium fluoride. Details are given of the dehydrochlorination of 1:1:1-chlorodifluoroethane.
GB3745756A 1954-04-01 1956-12-07 Dehydrochorination process Expired GB823998A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US420452A US2774799A (en) 1954-04-01 1954-04-01 Selective dehydrohalogenation of fluorohaloalkanes using a copper catalyst
GB3745756A GB823998A (en) 1956-12-07 1956-12-07 Dehydrochorination process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3745756A GB823998A (en) 1956-12-07 1956-12-07 Dehydrochorination process

Publications (1)

Publication Number Publication Date
GB823998A true GB823998A (en) 1959-11-18

Family

ID=10396631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3745756A Expired GB823998A (en) 1954-04-01 1956-12-07 Dehydrochorination process

Country Status (1)

Country Link
GB (1) GB823998A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253702B (en) * 1965-03-30 1967-11-09 Pennsalt Chemicals Corp Process for the production of vinylidene fluoride
EP0010856A1 (en) * 1978-10-26 1980-05-14 Imperial Chemical Industries Plc Halogenated hydrocarbons and a method for their preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253702B (en) * 1965-03-30 1967-11-09 Pennsalt Chemicals Corp Process for the production of vinylidene fluoride
EP0010856A1 (en) * 1978-10-26 1980-05-14 Imperial Chemical Industries Plc Halogenated hydrocarbons and a method for their preparation

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