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Synthetic lubricating oil compositions

阅读:231发布:2022-06-02

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1. A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A DIESTER OIL BASE OF LUBRICATING VISCOSITY PREPARED FROM DICARBOXYLIC ACIDS CONTAINING FROM ABOUT 2 TO 12 CARBON ATOMS AND ALCOHOLS CONTAINING LESS THAN ABOUT 20 CARBON ATOMS AND HAVING INCORPORATED THEREIN ABOUT 0.001 TO 5 WEIGHT PERCENT OF A BASE OIL-COMPATIBLE ORGANIC TITANIUM-CONTAINING MATERIAL FORMED BY THE REACTION OF A TITANIUM TETRAESTER WITH A GLYCOL CONTAINING FROM 2 TO ABOUT 24 CARBON ATOMS, SAID TITANIUM TETRAESTER AND GLYCOL REACTING IN THE RATIO OF ABOUT 2 TO 4 MOLES OF GLYCOL TO EACH MOLE OF TITANIUM TETRAESTER, SAID TITANIUM-CONTAINING MATERIAL BEING PRESENT IN AN AMOUNT SUFFICIENT TO INCREASE THE LOAD CARRYING CAPACITY OF THE BASE OIL AND DECREASE ITS THERMAL STABILITY, AND N-BUTYRYL-P-AMINO PHENOL IN AN AMOUNT TO IMPROVE THE THERMAL STABILITY OF THE BASE OIL INCLUDING THE TITANIUM-CONTAINING MATERIAL.
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