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US 11,597,891 B2Granted
Lubricant composition containing Ashless TBN molecules
AssigneeValvoline Licensing and Intellectual Property LLC
InventorsRajkumar Rajule, Jesse Dambacher
Life of this patent
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Abstract
New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
Claims5
A lubricant composition comprising:
- a base oil of lubricating viscosity, and
- an ashless TBN lubricant oil additive selected from the group consisting of:
- wherein R1, R2, R3 are each independently hydrogen;
- a C1 to C6 hydrocarbyl group;
- a C1 to C6 alkyl, aryl or alkoxy group, or a C1 to C6 hydrocarbyl group further comprising an ether linkage to a —O(CH2)n—CH3 group where n=0-3.
2 more elements
Dependencies are inferred from the claim text.