Claims
- 1. A traction fluid composition which is the product obtained by hydrogenation of a hydrocarbon composition containing at least 40 weight percent diphenylalkanes said diphenylalkanes being represented by the formula ##STR2## wherein x, y and z are integers in the range of 0 to 14, with the sum of x, y and z being in the range of 6 to 18, said diphenylalkanes being characterized further in that x and z are 0 in at least 5 weight percent thereof, the remaining hydrocarbons in said composition having a boiling range similar to the diphenylalkanes, said hydrocarbon composition having a boiling range of about 300.degree. to 450.degree. C. at atmospheric pressure.
- 2. The traction fluid composition of claim 1 wherein the sum of x, y and z is in the range of 6 to 10.
- 3. The traction fluid composition of claim 2 wherein the remaining hydrocarbons in said composition consist essentially of dialkylbenzenes, monoalkylbenzenes, and alkyltetrahydronaphthalenes.
- 4. The traction fluid composition of claim 3 wherein the hydrocarbon composition contains at least 70 weight percent diphenylalkanes.
- 5. The traction fluid composition of claim 4 wherein it contains about 75 weight percent diphenylalkanes, about 5 weight percent monoalkylbenzenes and about 20 weight percent dialkylbenzenes.
- 6. The traction fluid composition of claim 1 wherein the hydrocarbon composition contains the following:
- Diphenylalkanes, 40-100%
- Monoalkylbenzenes, 0-50%
- Dialkylbenzenes, 0-40%
- Miscellaneous Hydrocarbons, 0-20%.
- 7. The traction fluid composition of claim 1 where the hydrocarbon composition, which is hydrogenated, is prepared by a process comprising:
- (a) separating a fraction of substantially straight-chain C.sub.8 -C.sub.18 hydrocarbons from a petroleum distillate substantially free of olefins,
- (b) chlorinating said fraction to the extent whereby between about 10 and about 35 mole percent of the straight-chain hydrocarbons are substantially only monochlorinated,
- (c) alkylating benzene with the chlorination product of step (b) in the presence of an alkylation catalyst,
- (d) subjecting the product of step (c) to a fractional distillation whereby a fraction distilling in the range of about 300.degree. to about 450.degree. C. at atmospheric pressure is obtained, and,
- (e) subjecting the fraction distilling in the range of about 300.degree. to about 450.degree. C. to a further fractional distillation to obtain a fraction distilling in the range of about 340.degree. to about 400.degree. C. at atmospheric pressure.
- 8. The traction fluid composition of claim 1 where the hydrocarbon composition, which is hydrotreated, is prepared by a process comprising:
- (a) separating a fraction of substantially straight-chain C.sub.10 -C.sub.14 hydrocarbons from a petroleum distillate substantially free of olefins,
- (b) chlorinating said fraction to the extent whereby between about 20 mole percent of the straight-chain hydrocarbons are substantially only monochlorinated,
- (c) alkylating benzene with the chlorination product of step (b) in the presence of an alkylation catalyst,
- (d) subjecting the product of step (c) to a fractional distillation whereby a fraction distilling in the range of about 326.degree. to about 400.degree. C. at atmospheric pressure is obtained, and
- (e) subjecting the fraction distilling in the range of about 326.degree. to about 400.degree. C. to a further fractional distillation to obtain a fraction distilling in the range of about 349.degree. C. to about 397.degree. C. at atmospheric pressure.
- 9. A method of operating a tractive device wherein torque is transmitted between relatively rotatable members having tractive surfaces in a torque transmitting relationship and having a tractant disposed on said tractive surfaces, said method being characterized in that said tractant comprises the product obtained by hydrogenation of a hydrocarbon composition containing at least 40 weight percent diphenylalkanes, said diphenylalkanes being represented by the formula ##STR3## wherein x, y and z are integers in the range of 0 to 14, with the sum of x, y and z being in the range of 6 to 18, said diphenylalkanes being characterized further in that x and z are 0 in at least 5 weight percent thereof, the remaining hydrocarbons in said composition having a boiling range similar to the diphenylalkanes, said hydrocarbon composition having a boiling range of about 300.degree. to about 450.degree. C. at atmospheric pressure.
- 10. The method of claim 9 wherein the sum of x, y and z is in the range of 6 to 10.
- 11. The method of claim 10 wherein the remaining hydrocarbons in said hydrocarbon composition consists essentially of dialkylbenzenes, monoalkylbenzenes, and alkyltetrahydronaphthalenes.
- 12. The method of claim 11 wherein the hydrocarbon composition contains at least 70 weight percent diphenylalkanes.
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application is a continuation-in-part of application Ser. No. 23,574, filed Mar. 26, 1979, abandoned.
US Referenced Citations (3)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
23574 |
Mar 1979 |
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