GB440136A - Processes for refining halogenated hydrocarbons - Google Patents

Processes for refining halogenated hydrocarbons

Info

Publication number
GB440136A
GB440136A GB29723/34A GB2972334A GB440136A GB 440136 A GB440136 A GB 440136A GB 29723/34 A GB29723/34 A GB 29723/34A GB 2972334 A GB2972334 A GB 2972334A GB 440136 A GB440136 A GB 440136A
Authority
GB
United Kingdom
Prior art keywords
treatment
adsorbent
halogenated hydrocarbon
halogenated hydrocarbons
pentachlorodiphenyl
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
GB29723/34A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB440136A publication Critical patent/GB440136A/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
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

Halogenated hydrocarbons, particularly such as are used in dielectric compositions, are refined, and their dielectric properties are improved, by treatment with an adsorbent such as fuller's earth, silica gel, or activated carbon. The treatment may be effected by percolating the halogenated hydrocarbon through a bed of the adsorbent, or by agitating a mixture of the halogenated hydrocarbon with the adsorbent, or by a combination of these methods. The halogenated hydrocarbon may be heated, to reduce its viscosity. Specified compounds which may be treated are pentachlorodiphenyl and other chlorodiphenyls, chlorobenzenes, chlorinated olefines such as tri- or tetra-chlorethylene, and chlorinated paraffins such as pentachlorethane; the treatment of chloroform and carbon tetrachloride is disclaimed. Graphs are given illustrating the effect of the treatment on the resistivity of pentachlorodiphenyl and a mixture of hexachlorodiphenyl with trichlorobenzene. Specifications 195,055, [Class 2 (iii)], and 409,774 are referred to.
GB29723/34A 1933-10-18 1934-10-17 Processes for refining halogenated hydrocarbons Expired GB440136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US440136XA 1933-10-18 1933-10-18

Publications (1)

Publication Number Publication Date
GB440136A true GB440136A (en) 1935-12-20

Family

ID=21930063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29723/34A Expired GB440136A (en) 1933-10-18 1934-10-17 Processes for refining halogenated hydrocarbons

Country Status (1)

Country Link
GB (1) GB440136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767226A (en) * 1952-08-19 1956-10-16 Ethyl Corp Purification of chlorinated benzenes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767226A (en) * 1952-08-19 1956-10-16 Ethyl Corp Purification of chlorinated benzenes

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