Lubricant composition containing ashless TBN molecules
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.
1. A lubricant composition comprising:
a base oil of lubricating viscosity, and
an ashless TBN lubricant oil additive
wherein R 1 is a C 5 to C 12 alkyl moiety, and R 2 , R 3 , R 4 and R 5 are each independently hydrogen or a straight or branched chain C 1 to C 5 alkyl groups.
2. The lubricant composition of claim 1 , wherein the ashless TBN lubricant oil additive is
3. The lubricant composition of claim 1 , comprising the ashless TBN additive in weight % based on the weight of the final lubricant oil formulation between about 0.1 weight % to about 10 weight %.
4. The lubricant composition of claim 1 , comprising base oil in a weight % based on the weight of the final formulation of between about 63% and about 98.9%, an ashless TBN additive in weight % based on the weight of the final lubricant oil formulation between about 0.1 wt % to about 10 wt %, a viscosity modifier in a weight % based on the weight of the final formulation of between about 0.1 wt % and about 2 wt %, and an additive package in a weight % based on the weight of the final formulation of between about 1 wt % and about 25 wt %.