| 摘要 |
LUBRICITY ADDITIVE FOR ENGINE FUELS, IN PARTICULAR WITH A LOW SULPHUR CONTENT OF LESS THAN OR EQUAL TO 500 PPM, PREDOMINANTLY COMPOSED OF A COMBINATION COMPRISING FROM 5 TO 95% BY WEIGHT OF A GLYCEROL MONOESTER R1-C(O)-O-CH2-CHOH OR R1-C(O) -O-CH(CH2OH)2, R1 BEING AN ALKYL CHAIN COMPRISING FROM 8 TO 24 CARBON ATOMS OR A MONO- OR POLYCYCLIC GROUP COMPRISING FROM 8 TO 60 CARBON ATOMS, AND FROM 5 TO 95% BY WEIGHT OF A COMPOUND OF FORMULA R2-C(O) -X, R2 BEING AN ALKYL CHAIN COMPRISING FROM 8 TO 24 CARBON ATOMS OR A MONO- OR POLYCYCLIC GROUP COMPRISING FROM 8 TO 60 CARBON ATOMS AND X BEING CHOSEN AMONG (I) THE OR0 GROUPS, R0 BEING A HYDROCARBON REST COMPRISING FORM 1 TO 8 CARBON ATOMS, POSSIBLY SUBSTITUTED WITH HYDROXYL AND/OR ESTER GROUPS AND (II) THE GROUPS DERIVED FROM PRIMARY OR SECONDARY AMINES, ALKANOLAMINES OR POLYAMINES WITH AN ALIPHATIC HYDROCARBON CHAIN COMPRISING FROM 1 TO 18 CARBON ATOMS.
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