Claims
- 1. In a method for transmitting power by a lubricating liquid wherein an elastomeric seal is subject to deterioration, the improvement which comprises adding to said liquid about 0.5 to 20 volume percent of at least one tertiary diamide having the following formula: ##EQU8## wherein ##EQU9## wherein R = H, alkyl radical having C.sub.1 -C.sub.5
- m = 2-8
- x = 1-5
- whereby said diamide causes said seals to swell thereby reducing leakage.
- 2. Method according to claim 1 wherein the volume percent of the diamide is 0.5 - 15.
- 3. Method according to claim 1 wherein the volume percent of the diamide is 1.0 - 10.
- 4. Method according to claim 2 wherein the method for transmitting power is an automatic transmission.
- 5. Method according to claim 2 wherein the method for transmitting power is a hydraulic brake.
- 6. A power transmitting and lubricating liquid comprising about 0.5 -20 volume percent of at least one tertiary diamide having the following formula: ##EQU10## wherein ##EQU11## wherein R = H, alkyl radical having C.sub.1 -C.sub.5
- m = 2-8
- x = 1-5
- said diamide imparting to the liquid the property of swelling seals and thereby preventing leakage.
- 7. Liquid according to claim 6 wherein the volume percent of the diamide is 0.5 -15.
- 8. Liquid according to claim 6 wherein the volume percent of the diamide is 1.0 -10.
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation-in-part of Ser. No. 293,984, filed Oct. 2, 1972, now abandoned. The latter is related to the following applications:Serial Numbers Inventors______________________________________293,979 R. M. Thompson293,980 R. M. Thompson293,981 R. M. Thompson293,982 R. M. Thompson293,983 R. M. Thompson and A. F. Talbot______________________________________
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2594286 |
Bryant et al. |
Apr 1952 |
|
3296303 |
Nemec et al. |
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3312620 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
293984 |
Oct 1972 |
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