Non-stalling gasoline motor fuels

Claim 1

A GASOLINE MOTOR FUEL COMPOSITON COMPRISING A MAJOR AMOUNT OF A HYDROCARBON MIXTURE BOILING IN THE GASOLINE RANGE, THAT HAS A 50 PERCENT ASTM DISTILLATION POINT NOT GREATER THAN 220*F. AND THAT NORMALLY TENDS TO PROMOTE STALLING OF INTERNAL COMBUSTGION ENGINES BY CARBURETOR ICING, AND CONTAINING A SMALL AMOUNT, SUFFICIENT TO REDUCE THE CARBURETOR ICING CHARACTERISTICS OF THE COMPOSITION, OF A QUATERNARY 1,1,5-SUBSTITUTED IMIDAZOLINIUM SALT, ONE OF WHOSE 1-SUBSTITUENTS IS A LOWER ALIPHATIC GROUP CONTAINING NOT MORE THAN SIX CARBON ATOMS AND THAT CONTAINS ONLY ATOMS SELECTED FROM THE GROUP CONSISTING OF CARBON, HYDROGEN, AND OXYGEN, AND THE OTHER OF WHOSE 1-SUBSTITUENTS IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON AND HALOHYDROCARBON RADICALS CONTAINING 1 TO 10 CARBON ATOMS, WHOSE 2-SUBSTITUENT IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING 11 TO 17 CARBON ATOMS, AND WHOSE ANIONIC SUBSTITUENT IS AN ACID-FORMING RADICAL SELECTED FROM THE GROUP CONSISTING OF HALIDE, SULFATE, PHOSPHATE, AND SULFONATE RADICALS.