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Class 44/421 - Plural nitrogens attached indirectly to each other by acyclic nonionic bonding


Subclass of Class 44 - Fuel and related compositions
Definition: Compositions wherein nitrogen is attached by acyclic nonionic
No. of patents: 23
Last issue date: 09/21/2010


NumberTitleIssue Date
7799101Stabilized lubricant compositions
A stabilized lubricant composition is disclosed that comprises lubricating oil and a mixture of (a) at least one organophosphite compound and (b) at least one aromatic secondary amine or one substituted phenol or mixtures thereof. The compositions have been found to...
09/21/2010
7160458Method for purification of process water from a kerosene desulfurization plant
Method for purification of process water, in particular coming from a kerosene desulfurization plant, and related plant, comprising the steps of neutralizing the process water, carrying out a washing of the process water by a solvent, and biologically treating the p...
01/09/2007
7112230Fuels compositions for direct injection gasoline engines
Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I):
09/26/2006
6083288Fuel stabilizers
A strongly basic, hydrophobic amine which prevents the deposition of fuel-insoluble carboxylate deposits in fuel tanks and fuel transfer equipment is contained in a fuel additive package which minimizes the degradation of a hydrocarbon fuel during storage...
07/04/2000
5997593Fuels with enhanced lubricity
A reaction product of at least one C5 -C60 carboxylic acid and at least one amine selected from the group consisting of guanidine, aminoguanidine, urea, thioruea and the salts thereof is disclosed as an additive for hydrocarbon fuels...
12/07/1999
5639718Multifunctional viscosity modifiers for lubricating oil compositions with improved dispersancy and antioxidancy derived from adducts of quinone
An oil-soluble lubricating oil and fuel additive, useful as a multifunctional viscosity modifier comprising succinimide and other amine-containing polymers reacted with a quinone or substituted quinone adducts. Suitable polymers are those containing prima...
06/17/1997
5567213Use of olefinic imines to scavenge sulfur species
A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula ##STR1## wherein x is an integer from 1 to 10, R' is an o...
10/22/1996
5567212Use of olefinic imines to scavenge sulfur species
A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula ##STR1## wherein x is an integer from 1 to 10, R' is an o...
10/22/1996
5284576Method of scavenging hydrogen sulfide from hydrocarbons
Hydrocarbons, gas mixtures of hydrocarbons, and the like containing hydrogen sulfide are brought into intimate contact with a hydrogen sulfide scavenger prepared by reacting an alkylenepolyamine with formaldehyde, whereby the amount of hydrogen sulfide in...
02/08/1994
5223127Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines
A method for scavenging hydrogen sulfide in an aqueous and/or hydrocarbon medium is disclosed. According to the method, the medium is contacted with an effective amount of an amidine selected from the group consisting of monoamidines of from 1 to about 18...
06/29/1993
5169411Suppression of the evolution of hydrogen sulfide gases from crude oil, petroleum residua and fuels
Hydrogen sulfide gas evolution during storage or transport of petroleum residua is suppressed by the incorporation of an effective amount of certain imines....
12/08/1992
5152807Fuel oil compositions containing guanidinium salts
Sediment and color formation in diesel and heating fuel oils, especially those comprising a cracked fraction, may be reduced by incorporating in the fuel oil a guanidinium or substituted guanidinium salt....
10/06/1992
4659338Fuel compositions for lessening valve seat recession
A fuel composition for internal combustion engines, and more particularly, a fuel composition for internal combustion engines containing less than about 0.5 gram of lead per liter of fuel is described. The fuel composition comprises a major amount of a li...
04/21/1987
4292047Benzoquinone and amine reaction product for fuels and mineral oils
A benzoquinone and hydrocarbyl amine reaction product having detergent and corrosion inhibiting properties for fuel and lubricant compositions is provided....
09/29/1981
4292185Polymeric additive for lubricants and fuels
Polymeric additives comprising a diene-modified mono-olefinic backbone polymer functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound. The additives impart combined detergent, viscosity index improvement and other useful p...
09/29/1981
4233035Additives for aviation and similar fuels
A hydrocarbon fuel, especially a copper-sweetened aviation jet fuel, contains a metal deactivator which is an oxime of either an orthohydroxy aromatic ketone or ଱-hydroxy aliphatic ketone, or an imine of a diamine with an ortho hydroxy aromatic keto...
11/11/1980
4197091Metal chelate/anti-oxidant combinations with dimer-trimer acids, pipeline corrosion inhibitors
A composition for inhibiting the corrosion of ferrous metal pipelines used to transport petroleum hydrocarbons comprising a major portion of a mixture of C36 dicarboxylic dimer acid and a C54 trimer acid, which mixture has an acid nu...
04/08/1980
4163646Fuel oils containing N,N-substituted diamines
This invention relates to the hydrogenation of tetrahydropyrimidines to yield linear N-substituted diamines which can be reacted with carbonyls to form imines, which imines can be reduced to N,N'-substituted diamines as illustrated by N,N'-substituted 2,4...
08/07/1979
4087256Multiple metal deactivators, method for preparing, and use thereof
Disclosed is a reaction product and method for making same for use in supressing the ability of solubilized copper, iron, cobalt, nickel, chromium and manganese present in hydrocarbon liquids, such as gasoline and fuel oil, to catalyze oxidative degradati...
05/02/1978
4040799Cyclohexlamines used as fuel additives
This invention relates to the reductive amination of unsaturated cyclic ketones; to cyclic amines prepared thereby; and to uses thereof. For example, when isophorone is reductively aminated, trimethyl cyclohexylamines and cyclohexenamines are obtained. Th...
08/09/1977
4022835Multiple metal deactivators, method for preparing, and use thereof
Disclosed is a reaction product and method for making same for use in suppressing the ability of solubilized copper, iron, cobalt, nickel, chromium and manganese present in hydrocarbon liquids, such as gasoline and fuel oil, to catalyze oxidative degradat...
05/10/1977
4011057Hindered phenol antioxidant composition containing an amino compound
An improved antioxidant composition comprising hindered phenol antioxidant wherein the improvement comprises, in combination with the hindered phenol, from about 1% to 10%, by total weight, of at least one amino compound having a pKb of from 0.3 to 8.0....
03/08/1977
4003719Schiff bases as biocides in petroleum products
A composition for preventing the growth of micro-organisms in petroleum hydrocarbons in contact with water by incorporating from about 0.05 to 0.1 per cent by volume of a hydrocarbon soluble Schiff base having less than 20 carbon atoms per hetero atom....
01/18/1977
 
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