Class 44/422 - Quaternary ammonium salt or amine oxide

Subclass of Class 44 - Fuel and related compositions
Definition: Compositions which contain amine oxide compounds or quaternary
No. of patents: 28
Last issue date: 04/03/2012

Number	Title	Issue Date
8147569	Quaternary ammonium salt detergents for use in fuels A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a tertiary amino...	04/03/2012
8083814	Quaternary ammonium salt of a mannich compound A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and a...	12/27/2011
7951211	Quaternary ammonium salt detergents for use in fuels A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a tertiary amino...	05/31/2011
7947093	Quaternary ammonium salt detergents for use in fuels A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a tertiary amino...	05/24/2011
7918905	Method for improving biodiesel fuel The addition of strong neutralizing amines to react with free fatty acid in biodiesel fuels that may be left from some synthesis routes can lower the total acid number (TAN) of the biodiesel fuel. Surprisingly, the strong neutralizing amines do not interfere with th...	04/05/2011
7381689	Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds A method and an amide composition used therein for inhibiting, retarding, mitigating, reducing, controlling and/or delaying formation of hydrocarbon hydrates or agglomerates of hydrates. The method may be applied to prevent or reduce or mitigate plugging of conduits...	06/03/2008
6391070	Anti-static additive compositions for hydrocarbon fuels It has been discovered that less expensive, and in some cases synergistically effective anti-static additive blends may be added to hydrocarbon fuels to improve the conductivity thereof. The blend includes an anti-static amount of at least one hydrocarbon...	05/21/2002
5833722	Fuel oil compositions with improved lubricity properties The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with a nitrogen compound....	11/10/1998
5672182	Developer system for base reactable petroleum fuel markers Colorless markers for petroleum products and methods of detecting them....	09/30/1997
5672183	Anti-static additives for hydrocarbons A composition having increased electrical conductivity, comprising a liquid hydrocarbon and an anti-static amount of a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer. The copolymer has an alkylvinyl monomer unit to cat...	09/30/1997
5667539	Oleaginous compositions Compounds of the formula I below are useful as additives in oleaginous compositions: ##STR1## wherein B represents an aromatic system, A represents a hydrocarbyl group, R1 and R2 are the same or are different and each independen...	09/16/1997
5372614	Sludge dispersing agent for fuel oil and fuel oil composition containing the same A sludge dispersing agent for fuel oils includes a polymer having at least one >C.dbd.N+ < bond in its molecule and at least one compound selected from the group consisting of long-chain alkyl phosphates and alkyl sulfosuccinates and salts ther...	12/13/1994
5348561	Fuel oil compositions Sediment and color formation in distillate fuels are reduced by the addition of a quaternary ammonium compound comprising a cation in which the ratio of carbon atoms to quaternary nitrogen atoms is not more than 10:1 and an anion which is derived from an ...	09/20/1994
5298038	Guerbet branched alkoxylated amine detergent additives An additive for fuel oil comprises a compound comprising (a) an alkyl group having 9 to 37 carbon atoms and containing a branched alkyl having 3 to 18 carbon atoms and (b) an amine group having at least one polyoxyalkylene having 2 to 4 carbon atoms or an...	03/29/1994
5254138	Fuel composition containing a quaternary ammonium salt Conductive fuel detergent compositions which posses not only the desirable characteristics of minimizing unwanted deposits on internal engine surface such as intake systems or port fuel injectors and exhibiting anticorrosion characteristics but also have ...	10/19/1993
5250081	Smoke reducing additive for two-cycle engine lubricant-fuel mixture comprising the Hofmann decomposition products of a quaternary ammonium hydroxide A process for reducing smoke emitted from a two-cycle internal combustion engine wherein the engine is operated with a lubricant oil-fuel mixture containing certain quaternary ammonium hydroxides. A preferred quaternary ammonium hydroxide is tricapryl met...	10/05/1993
5234477	Method of reducing NO_x emissions in gasoline vehicles The present invention is an unleaded fuel composition containing a major amount of a hydrocarbon base fuel of the gasoline boiling range containing an amount effective to reduce NOx emissions from electronic port fuel injected engines of ammoni...	08/10/1993
5112364	Gasoline-engine fuels containing polyetheramines or polyetheramine derivatives Gasolines containing polyetheramine and/or polyetheramine derivatives to improve valve cleaning properties....	05/12/1992
4836829	Fuel composition and process for multi-port fuel injection systems (PNE-509) Vehicle driveability problems associated with deposits formed in multiport fuel injectors are alleviated by delivering fuel comprising a particular amine containing various C6 to C24 alkyl, aryl, cycloaliphatic, heterocyclic, substit...	06/06/1989
4826506	Use of polyhydric alcohols to reduce loss of amine oxides from liquid hydrocarbon fuels Certain polyhydric alcohols have been found to be effective in reducing the loss of certain amine oxides from liquid hydrocarbon fuels such as gasoline....	05/02/1989
4810263	Fuel composition An additive package for reducing and/or preventing injector fouling in a multiport fuel injection means is described. The additive package preferably comprises a particularly described amine oxide, one or more particularly described demulsifiers, and a pa...	03/07/1989
4787916	Method and fuel composition for reducing octane requirement increase It has been found that when minor amounts of quaternary ammonium hydroxides are added to gasolines, the octane requirement increase for fuel fired spark ignition internal combustion engines is decreased or reversed. Thus, in one aspect, the present invention c...	11/29/1988
4600518	Choline for neutralizing naphthenic acid in fuel and lubricating oils Choline is an effective agent for neutralizing naphthenic acids found in certain fuel and lubricating oils....	07/15/1986
4600409	Quaternary deposit control additives A fuel composition is disclosed containing 30 to 10,000 ppm of an additive comprising quaternized polyoxyalkylene amine salts of molecular weight 500 to about 2500, the polyoxyalkylene moiety comprising 1 to 30 oxyalkylene units, the units having 2 to 4 c...	07/15/1986
4564372	Quaternary deposit control additives A fuel composition is disclosed containing 30 to 10,000 ppm of an additive comprising quaternized polyoxyalkylene amine salts of molecular weight 500 to about 2500, the polyoxyalkylene moiety comprising 1 to 30 oxyalkylene units, the units having 2 to 4 c...	01/14/1986
4514286	Fuel sweetening with organic peroxides An improved process for reducing mercaptan (thiol) concentrations of sour petroleum distillates includes the treatment of these sour distillates with peroxy compounds, preferably tertiary butyl hydroxide and cumene hydroperoxide in the presence of oil-dis...	04/30/1985
4398505	Diesel fuel composition N,N-disubstituted organic nitroxides are highly effective ignition improvers for diesel fuels....	08/16/1983
4071327	Salts of Mannich bases and derivatives thereof Novel compositions, useful as additives for normally liquid fuels to impart dispersancy, anti-icing and rust inhibiting properties thereto, comprise salts of amines prepared by the Mannich reaction between a hydroxy-substituted aromatic compound, usually ...	01/31/1978

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Class 44/422 - Quaternary ammonium salt or amine oxide