Fuel composition

Claim 1

AN IMPROVED FUEL COMPOSITION COMPRISING A MAJOR PORTION OF A LIQUID HYDROCARBON DISTILLATE FUEL BOILING PREDOMINANTLY ABOVE ABOUT 300*F AND A MINOR PORTION, SUFFICIENT TO REDUCE THE DEPOSIT-FORMING CHARACTERISTICS OF SAID FUEL OF AN OIL-SOLUBLE COPOLYMER OF MONOMERS SELECTED FROM AT LEAST EACH OF THE FIRST TWO CLASSES OF THE CLASSES CONSISTING OF (A) OIL-SOLUBILIZING COMPOUNDS HAVING A SINGLE POLYMERIZABLE ETHYLENIC LINKAGE AND CONTAINING A MONOVALENT HYDROCARBON GROUP OF FROM 8 TO 30 ALIPHATIC CARBON ATOMS, (B) ESTERS OF A,B-UNSATURATED ALIPHATIC MONOCARBOXYLIC ACIDS OF FROM 3 TO 8 CARBON ATOMS EACH WHEREIN THE CARBOXYL GROUPS OF SAID ACIDS ARE MONOESTER-LINKED TO A MEMBER OF THE GROUP CONSISTING OF POLY-1,2-ALKYLENE GLYCOLS AND ALKYL ETHERS THEREOF HAVING FROM 2 TO 7 CARBON ATOMS IN EACH ALKYLENE GROUP AND AVERAGE MOLECULAR WEIGHTS OF MORE THAN 800 AND (C) A,B-UNSATURATED MONOCARBOXYLIC ACIDS OF FROM 3 TO 8 CARBON ATOMS EACH, SAID (A) COMPONENT CONSTITUTING FROM ABOUT 35 TO 99.9 MOLE PERCENT AND SAID (B) AND (C) COMPONENTS CONSTITUTING A TOTAL OF FROM ABOUT 65 TO 0.1 MOLE PERCENT OF THE POLYMER COMPOSITION, THERE BEING PRESENT IN SAID (B) AND (C) COMPONENTS, ON THE BASIS OF 100 MOLE PERCENT TOTAL (B) AND (C) POLAR MONOMERS FROM 3 TO 100 MOLE PERCENT OF SAID (B) COMPONENT, AND FROM 0-97 MOLE PERCENT OF SAID (C) COMPONENT.