GB847467A - Improvements in or relating to the preparation of chlorinated ethylenes - Google Patents

Improvements in or relating to the preparation of chlorinated ethylenes

Info

Publication number
GB847467A
GB847467A GB17365/59A GB1736559A GB847467A GB 847467 A GB847467 A GB 847467A GB 17365/59 A GB17365/59 A GB 17365/59A GB 1736559 A GB1736559 A GB 1736559A GB 847467 A GB847467 A GB 847467A
Authority
GB
United Kingdom
Prior art keywords
zone
heated
unheated
tetrachloroethane
reaction zone
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
GB17365/59A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB847467A publication Critical patent/GB847467A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/35—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction
    • C07C17/357—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction by dehydrogenation

Landscapes

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

Abstract

Tri- and/or tetra-chloroethylenes are prepared by passing sym-tetrachloroethane vapour sequentially through a heated open-tube (i.e. free of packing or added catalyst) reaction zone and through an unheated reaction zone, the ratio of the volume of the unheated zone to that of the heated zone being at least 2 : 1 and preferably at least 10 : 1. Preferably up to one mole of chlorine is passed per mole of tetrachloroethane in addition to the latter. The unheated zone may contain packing or catalyst, such as stainless steel, nickel-chromium alloy, porcelain, charcoal or activated carbon. Advantageously a portion of the crude reaction product, preferably a highboiling portion, is recycled to the heated zone. The heated reaction zone is preferably heated so that the effluent temperature is 350-525 DEG C. Pentachloroethane is obtained as by-product. Specification 468,921 is referred to.
GB17365/59A 1958-08-15 1959-05-21 Improvements in or relating to the preparation of chlorinated ethylenes Expired GB847467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US847467XA 1958-08-15 1958-08-15

Publications (1)

Publication Number Publication Date
GB847467A true GB847467A (en) 1960-09-07

Family

ID=22186961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17365/59A Expired GB847467A (en) 1958-08-15 1959-05-21 Improvements in or relating to the preparation of chlorinated ethylenes

Country Status (1)

Country Link
GB (1) GB847467A (en)

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