GB440136A - Processes for refining halogenated hydrocarbons - Google Patents
Processes for refining halogenated hydrocarbonsInfo
- 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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2767226A (en) * | 1952-08-19 | 1956-10-16 | Ethyl Corp | Purification of chlorinated benzenes |
-
1934
- 1934-10-17 GB GB29723/34A patent/GB440136A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2767226A (en) * | 1952-08-19 | 1956-10-16 | Ethyl Corp | Purification of chlorinated benzenes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB440136A (en) | Processes for refining halogenated hydrocarbons | |
| GB413537A (en) | Process for purifying and regenerating used lubricating oil | |
| GB430045A (en) | Improvements in and relating to liquid insulating compositions for electrical apparatus | |
| GB496020A (en) | Improvements in and relating to insulating liquids for electric apparatus | |
| GB478661A (en) | Process for improving tars for use in road construction and particularly their binding properties | |
| GB430814A (en) | Improvements in and relating to cracking of hydrocarbons | |
| GB484689A (en) | Improvements in or relating to the refining of edible fats and oils | |
| GB417194A (en) | Compositions containing chlorinated rubber and manufacture of same | |
| GB527609A (en) | An improved process for refining hydrocarbon oils | |
| GB447533A (en) | Process of refining motor fuels | |
| GB285064A (en) | ||
| GB476664A (en) | Improvements in and relating to the purification of dielectric materials | |
| GB716979A (en) | The stabilisation of mineral lubricating oils | |
| GB190553A (en) | Improvements relating to the treatment of petroleum and other liquid hydrocarbons | |
| GB422397A (en) | Improvements in or relating to the manufacture of carbide cakes | |
| GB721229A (en) | Improvements in or relating to cable insulating oils | |
| CA307471A (en) | Process of treating hydrocarbons such as asphalt, tar, pitch and petroleum residues | |
| GB474892A (en) | Process for improving illuminating oils | |
| GB469520A (en) | Process for refining mineral oils | |
| GB186955A (en) | Improvements relating to the treatment of petroleum and petroleum distillates | |
| GB572768A (en) | Improvements in or relating to the purification of resinous rubber transformation products | |
| AU33936A (en) | Process for the treatment with hydrogenating gases of distillable carbonaceous materials | |
| GB406723A (en) | Improved manufacture of seed disinfectants and their application | |
| GB394404A (en) | Improvements in or relating to insulating oils | |
| GB441882A (en) | Improvements in and relating to cable impregnating compounds |