Fuel oil composition and composite improvement agent therefor

Claim 1

A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A HYDROCARBON FUEL OIL THAT NORMALLY TENDS TO FORM SMOKE AND SOOT DURING COMBUSTION, AND CONTAINING AN AMOUNT SUFFICIENT TO REDUCE THE SMOKE AND SOOT-FORMING TENDENCIES OF THE OIL IN THE RANGE OF ABOUT 0.005 TO ABOUT 2.0 PERCENT BY WEIGHT OF A COMBINATION OF (A) A PREFERENTIALLY OIL-SOLUBLE MEMBER OF THE GROUP CONSISTING OF SECONDARY AND TERTIARY AMINES AT LEAST ONE OF WHOSE NSUBSTITUENTS IS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RADICALS CONTAINING 6 TO 22 CARBON ATOMS, ANOTHER OF WHOSE N-SUBSTITUENTS IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING 1 TO 22 CARBON ATOMS AND WHOSE REMAINING N-SUBSTITUENT IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND A RADICAL OF THE SAME CLASS AS THE TWO PREVIOUSLY DESCRIBED N-SUBSTITUENTS, AND (B) A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALKALINE EARTH METAL, AMMONIUM, AND ETHYLOLAMMONIUM SALTS OF A DIALKYL-SULFOSUCCINATE WHOSE ALKYL GROUPS EACH CONTAIN 7 TO 9 CARBON ATOMS, AT LEAST SIX OF WHICH ARE IN A STRAIGHT CHAIN, BUT THERE BEING NO GROUP CONTAINING MORE THAN 7 CARBON ATOMS ATTACHED TO THE ALPHA-CARBON ATOM OF SAID ALKYL GROUPS, EACH OF SAID AMINE AND SAID SALT OF SAID DIALKYLSULFOSUCCINATE BEING PRESENT IN AN AMOUNT OF AT LEAST 0.0025 PERCENT BY WEIGHT OF THE OIL.