Lubricant compositions
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United States of America Patent
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Dec 7, 2004
Grant Date -
Nov 27, 2003
app pub date -
Apr 10, 2003
filing date -
Sep 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lubricant compositions comprises a lubricant base oil and one or more compounds resulting the modification of a succinimide represented by formula (1) or (2) ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and are each independently a hydrocarbon group having 8 to 30 carbon atoms, R.sup.3 and R.sup.4 may be the same or different and are each independently a hydrocarbon group having 1 to 4 carbon atoms, R.sup.5 is hydrogen or a hydrocarbon group having 1 to 30 carbon atoms, n is an integer from 1 to 7. The lubricant compositions have a long-lasting anti-shudder property, an enhanced transmission capacity for a wet clutch, and an excellent shifting property.
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