Abstract: A gasoline fuel composition comprising a major portion of gasoline and a minor portion of one or more polyaryl amines, effective to increase the octane number of the gasoline composition, represented by the formula: ##STR1## where R.sup.1 -R.sup.5 are independently hydrogen or C.sub.1 -C.sub.8 aliphatic hydrocarbons; R.sup.6 -R.sup.8 are independently hydrogen or C.sub.1 -C.sub.6 aliphatic hydrocarbons; x is between 0 and about 2, inclusive, y is between 0 and about 3, inclusive; and z is between about 1 and about 50, inclusive.

Abstract: Polyalkyl hydroxy and amino aromatic carbamates having the formula: ##STR1## or a fuel-soluble salt thereof; wherein X is hydroxy or amino;R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, lower alkoxy having 1 to 6 carbon atoms, nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms;R.sub.3 is hydrogen or lower alkyl having 1 to 6 carbon atoms; andR.sub.4 is a polyalkyl group having an average molecular weight in the range of about 400 to 5,000.The polyalkyl hydroxy and amino aromatic carbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.

Abstract: Fuel compositions containing a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective deposit-controlling amount of a poly(oxyalkylene) aromatic ether having the formula: ##STR1## where A.sub.1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl, or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl and each R.sub.3 and R.sub.4 is independently selected in each --O--CHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to 100 carbon atoms, phenyl, aralkyl having 7 to 100 carbon atoms or alkaryl having 7 to 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.

Abstract: The present invention relates to a novel process for the production of fuel and lubricant additives useful as dispersants and multifunctional viscosity modifiers wherein a dihydroxyaromatic compound is alkylated with an olefinic polymer and then aminated in such a manner as to oxidize the hydroxyl moieties of the dihydroxyaromatic compound to carbonyl groups.

Abstract: Petroleum derived fuel compositions of improved efficiency for use with finished gasoline and diesel fuels in compression ignition engines and spark ignition engines include a catalytic clean-combustion-promoter composition to improve fuel efficiency and reduce their air polluting effects. The catalytic clean-combustion-promoter compositions utilize ketones as solvents, alcohols as cosolvents, ethers as octane supporters, nitroparaffin compounds as combustion supporters, and, to promote the chemical reactions a catalytic medium is used in combination with aromatic amines. When all the compounds are combined in the recited quantities, the molecular structure and surface tension of the fuel is transformed through chemical bonding to produce a synergistic effect, which increases the combustion characteristic of the fuels to be burned and reduces the tendency of the fuel to create deposits, and therefore reduces the exhaust emissions.

Abstract: Liquid petroleum products are tagged with a marker which is a compound or mixture of compounds having the formula: ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.6 alkyl, and R.sup.2 and R.sup.3 are nothing or --O--(C.sub.1 -C.sub.3 alkyl).

Abstract: The incorporation of these catalytic clean combustion promoters compositions to liquid fuels for internal combustion engines, improve their combustion properties; thus, reducing their air polluting emissions as nitrogen oxides (NO.sub.x), carbon monoxide (CO), and unburned hydrocarbons (HC). Also, these fuel activators reduce smoke and particulate matter exhaust emissions. Moreover, the addition of these fuel activators, reduce the corrosion properties of fuels, clean the whole fuel systems of gums and varnishes, clean and prevent carbon deposits on injectors, valves and on the combustion chamber parts.The composition of these catalytic clean combustion promoters additives includes aromatic and aliphatic hydrocarbon solvents with and without oxygenated functional groups, aromatic amines, a catalytic agent in chemical reactions, nitroparaffin solvents, aliphatic ether as an octaine assistant, and/or Kerosene as a cetane assistant.

Abstract: Oxidative stability of gasoline mixtures is improved by adding to the gasoline an alkyl 1,2-dihydroquinoline compound, dimer, trimer or polymer thereof. Optionally, a hindered phenol may be conjointly used with the quinoline compound.

Abstract: A composition for the improvement of hydrocarbon fuel as exhibiting a boiling range of gasoline. The composition comprises an amine, a polyaminated detergent, a phenylamine diamine inhibited aromatic monomer stabilized by a polymeric substrate, a catalyst, a solvent, a promotor, alternative promoter and co-promoter. When used collectively, the recited composition has been found to significantly increase the octane of such hydrocarbon fuels while enhancing their anti-knock, anti-icing, anti-oxidency, anti-corrosion, detergency, and combustion properties and providing a lubrication quality to spark ignition-type engines used to burn the hydrocarbon fuels.