GB1092256A - Process for preparing tetrafluoroethylene - Google Patents

Process for preparing tetrafluoroethylene

Info

Publication number
GB1092256A
GB1092256A GB4683364A GB4683364A GB1092256A GB 1092256 A GB1092256 A GB 1092256A GB 4683364 A GB4683364 A GB 4683364A GB 4683364 A GB4683364 A GB 4683364A GB 1092256 A GB1092256 A GB 1092256A
Authority
GB
United Kingdom
Prior art keywords
tetrafluoroethylene
difluorochloromethane
mixture
preparing tetrafluoroethylene
products
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
GB4683364A
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 GB1092256A publication Critical patent/GB1092256A/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
    • C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
    • C07C17/263—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions
    • C07C17/269—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions of only halogenated hydrocarbons

Landscapes

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

Abstract

Tetrafluoroethylene is produced by a process wherein difluorochloromethane is pyrolysed, tetrafluoroethylene and lower boiling materials are separated from the reaction product, the by-products formed which have a higher boiling point than tetrafluoroethylene are mixed with fresh difluorochloromethane, the mixture is subjected to pyrolysis at 700-1100 DEG C. for 0.01-0.5 seconds, and tetrafluoroethylene is isolated from the reaction mixture. By-products specified which are converted to tetrafluoroethylene by the process of the invention are CCl2F2, C3F6, cyclo-C4F8, iso-C4F8, C2HClF4, C3HClF6, CHF3 and CCl3F.
GB4683364A 1963-11-23 1964-11-17 Process for preparing tetrafluoroethylene Expired GB1092256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF41342A DE1207370B (en) 1963-11-23 1963-11-23 Process for the production of tetrafluoroethylene

Publications (1)

Publication Number Publication Date
GB1092256A true GB1092256A (en) 1967-11-22

Family

ID=7098629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4683364A Expired GB1092256A (en) 1963-11-23 1964-11-17 Process for preparing tetrafluoroethylene

Country Status (6)

Country Link
BE (1) BE656128A (en)
DE (1) DE1207370B (en)
FR (1) FR1414542A (en)
GB (1) GB1092256A (en)
LU (1) LU47276A1 (en)
NL (1) NL142394B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8708618D0 (en) * 1987-04-10 1987-05-13 Ici Plc Production process
WO1996025378A1 (en) † 1995-02-17 1996-08-22 E.I. Du Pont De Nemours And Company Synthesis of tetrafluoroethylene

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB760657A (en) * 1953-11-06 1956-11-07 Du Pont Improvements in or relating to the preparation of tetrafluoroethylene
US2852574A (en) * 1955-06-15 1958-09-16 Du Pont Preparation of tetrafluoroethylene

Also Published As

Publication number Publication date
NL6413404A (en) 1965-05-24
LU47276A1 (en) 1965-01-04
BE656128A (en) 1965-05-24
FR1414542A (en) 1965-10-15
DE1207370B (en) 1965-12-23
NL142394B (en) 1974-06-17

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