Claims
- 1. Liquid dielectrics of formula: ##STR7## where n, x, y and z have value 1 or 2.
- 2. Process for the preparation of the liquid dielectric of claim 1 comprising chlorinating a chlorotoluene or chloroxylene or mixture thereof at a temperature between about 0.degree. C. and 150.degree. C. for a sufficient time to produce free radicals; condensing the chlorinated product and excess chlorotoluene or chloroxylene in the presence of a catalyst at a temperature between about 20.degree. C. and 100.degree. C.; and recovering a liquid dielectric.
- 3. Process according to claim 2, in which the excess chlorotoluenes and/or chloroxylenes unconverted in the chlorination stage are 0.4 to 40 times greater than the quantity of chlorobenzyl or methylchlorobenzyl chlorides obtained.
- 4. An insulating fluid comprising one or more compounds according to the formula of claim 1 in admixture with one or more compounds of the general formula: ##STR8## in which a varies from 2 to 4, b varies from 0 to 2 and R is an aliphatic hydrocarbon radical containing 1 to 3 carbon atoms and an acid acceptor.
- 5. The insulating fluids of claim 4 in which the acid acceptor is an epoxide type or tetraphenyl tin in an amount ranging from between about 0.001 and 10 percent.
- 6. The insulating fluids of claims 4 or 5 in which the compounds according to the formula of claim 1 constitute about 20 to 80 percent of the mixture.
- 7. The insulating fluids of claims 4 or 5 where the compound of claim 1 is ##STR9## admixed with industrial trichlorobenzene and in which the compound constitutes 40 to 70 percent of the mixture.
- 8. The insulating fluids of claim 7 in which the trichlorobenzene has the following composition; isomer 1-2-4, 50 to 85 percent, and isomer 1-2-3, 50 to 15 percent.
- 9. A transformer or condenser containing at least one dielectric compound according to the formula of claim 1 as an insulating fluid.
Priority Claims (2)
Number |
Date |
Country |
Kind |
78 22216 |
Jul 1978 |
FRX |
|
79 04259 |
Feb 1979 |
FRX |
|
Parent Case Info
This is a continuation of application Ser. No. 243,143, filed Mar. 12, 1981, which application is a continuation of application Ser. No. 057,982, filed July 16, 1979, both abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (2)
Number |
Date |
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626317 |
Jul 1949 |
GBX |
1504655 |
Mar 1978 |
GBX |
Continuations (2)
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Number |
Date |
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Parent |
243143 |
Mar 1981 |
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Parent |
57982 |
Jul 1979 |
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