Abstract 1. A SYNTHETIC LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PORTION OF AN ALIPHATIC ESTER BASE OIL HAVING LUBRICATING PROPERTIES FORMED FROM THE REACTION OF A PENTAERYTHRIOL OR TRIMETHYLOPROPANE AND A SATURATED HYDROCARBYL MONOCARBOXYLIC ACID HAVING FROM ABOUT 2 TO 18 CARBON ATOMS PER MOLECULE, CONTAINING A. FROM ABOUT 0.005 TO 0.5 WEIGHT PERCENT OF A DIHYDROCARBYLAMINE SALT OF OXALIC ACID REPRESENTED BY THE FORMULA: R-NH-R''. HOOC-COOH .R''-NH-R IN WHICH R IS A HYDROCARBYL RADICAL HAVING FROM ABOUT 8 TO ABOUT 22 CARBON ATOMS AND R'' IS HYDROGEN OR A HYDROCARBYL RADICAL HAVING FROM 1 TO 5 CARBON ATOMS B. FROM ABOUT 0.3 TO 5 PERCENT BY WEIGHT OF THE LUBRICATING OIL COMPOSITION AN ALKYL OR ALKARYL PHENYL NAPHTHYLAMINE IN WHICH THE ALKYL RADICAL HAS FROM 4 TO 22 CARBON ATOMS C. FROM ABOUT 0.3 TO 5 PERCENT OF A DIALKYLDIPHENYLAMINE IN WHICH THE ALKYL RADICALS HAVE FROM 4 TO 12 CARBON ATOMS, AND D. FROM ABOUT 0.25 TO 10 PERCENT OF A TRIHYDROCARBYL PHOSPHATE IN WHICH SAID HYDROCARBYL RADICAL CONTAINS AN ARYL RING AND CONTAINS FROM 6 TO 18 CARBON ATOMS.
A SYNTHETIC LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PORTION OF AN ALIPHATIC ESTER BASE OIL HAVING LUBRICATING PROPERTIES FORMED FROM THE REACTION OF A PENTAERYTHRIOL OR TRIMETHYLOPROPANE AND A SATURATED HYDROCARBYL MONOCARBOXYLIC ACID HAVING FROM ABOUT 2 TO 18 CARBON ATOMS PER MOLECULE, CONTAINING A. FROM ABOUT 0.005 TO 0.5 WEIGHT PERCENT OF A DIHYDROCARBYLAMINE SALT OF OXALIC ACID REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
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A SYNTHETIC LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PORTION OF AN ALIPHATIC ESTER BASE OIL HAVING LUBRICATING PROPERTIES FORMED FROM THE REACTION OF A PENTAERYTHRIOL OR TRIMETHYLOPROPANE AND A SATURATED HYDROCARBYL MONOCARBOXYLIC ACID HAVING FROM ABOUT 2 TO 18 CARBON ATOMS PER MOLECULE, CONTAINING A. FROM ABOUT 0.005 TO 0.5 WEIGHT PERCENT OF A DIHYDROCARBYLAMINE SALT OF OXALIC ACID REPRESENTED BY THE FORMULA: