Synthetic diester lubricating oils
阅读：787发布：2022-06-06
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11. A SYNTHETIC LUBRIATING OIL PREPARED BY A PROCESS COMPRISING HEATING A MIXTURE OF A SUBSTANTIAL AMOUNT OF EACH OF AT LEAST TWO NORMALLY LIQUID DIESTERS OF AT LEAST ONE SATURATED ALIPHATIC DICARBOXYLIC ACID IN WHICH THE CARBOXYL RADICALS ARE SEPARATED BY A CHAIN OF FROM ABOUT 4 TO 12 CARBON ATOMS AND ALKANOLS OF FROM ABOUT 4 TO ABOUT 20 CARBON ATOMS, SAID MIXTURE CONTAINING NOT LESS THAN 5 PARTS OF EACH DIESTER PER 100 PARTS BY WEIGHT OF SAID MIXTURE, WITH AN ALKALI METAL TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID ALKALI METAL AND BELOW THE TEMPERATURE AT WHICH THE MIXTURE OF DIESTERS DECOMPOSES.
12. A SYNTHETIC LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF THE SYNTHETIC LUBRICATING OIL OF CLAIM 11, A POLYMER OF AN ESTER OF AN ALPHA, BETAOLEFINICALLY UNSATURATED ACID, AND AN AMOUNT OF A GROUP II METAL SALT OF A CONDENSATION PRODUCT OF AN ALKYL SUBSTITUTED PHENOL, SAID ALKYL GROUP HAVING AT LEAST 4 CARBON ATOMS, AND AN ALDEHYDE SUFFICIENT TO GIVE A METAL CONTENT TO THE COMPOSITION OF FROM ABOUT 0.01% TO ABOUT 1.0% BY WEIGHT.
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