Assignee: Ethyl Petroleum Additives, Inc.

Location: St.Louis, MO
No. of patents: 34

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Number	Title	Issue Date
5328619	Oil additive concentrates and lubricants of enhanced performance capabilities Haze formation in additive concentrates containing boron-containing ashless dispersants is inhibited, and improvements in performance capabilities can be realized, by suitably controlling the pH of the concentrate as produced. Not only does such pH contro...	07/12/1994
5208382	Reducing copper corrosiveness of organic sulfides The copper corrosiveness of organic sulfides is reduced by treating them with an alkali metal-containing or alkaline earth metal-containing substance capable of dissolving elemental sulfur (e.g., sodium hydroxide, sodium sulfide, etc.). The process is con...	05/04/1993
5198133	Modified succinimide or sucinamide dispersants and their production Preconditioned automatic transmission fluids are made by using a preblend formed by heating an alkenyl succinimide or succinamide dispersant with a phosphorus ester and water to partially hydrolyze the ester and then mixing the preblend and other additive...	03/30/1993
5174922	Reducing copper corrosiveness of organic polysulfides The invention provides a process of reducing the copper corrosiveness of dihydrocarbyl polysulfides by treating them with an alkali metal-containing or alkaline earth metal-containing substance capable of dissolving elemental sulfur (e.g., sodium hydroxid...	12/29/1992
5137980	Ashless dispersants formed from substituted acylating agents and their production and use Succinimides, succinic esters, and succinic ester-amides are formed by (A) reacting (i) at least one substantially aliphatic polymer of at least one lower olefin, and (ii) an acidic reactant or a mixture of two or more acidic reactants represented by the gener...	08/11/1992
5137978	Substituted acylating agents and their production Polybutenyl substituted succinic acylating agents are formed by reacting (a) an acidic reactant represented by the general formula R--CO--CH.dbd.CH--CO--R' wherein R and R' are independently --OH, --O--lower alkyl, a halogen atom, or taken together are a singl...	08/11/1992
5126073	Biodegradable emulsifying composition containing fatty alcohol polyglycol ethers The invention concerns a method for treatment of solid and fluid materials contaminated by at least predominantly lipophilic harmful substances, in particular hydrocarbons and the like, especially for oil-infested grounds and waters, as well as suitable s...	06/30/1992
5124055	Lubricating oil composition Lubricant compositions comprising an oil of lubricating viscosity and a cosulfurized blend of soybean oil and an ester, amide, ester-amide or fatty amine derivative which contains at least one substituent group....	06/23/1992
5122616	Succinimides Succinimides useful as detergents in fuels are prepared by reacting (a) at least one substituted succinic acid or acid derivative thereof containing an average of from 16 to about 50 carbon atoms in the molecule and having an acyclic aliphatic substituent...	06/16/1992
5113803	Reduction of No_x emissions from gasoline engines NOx emissions are reduced in two stages during operation of an engine equipped with an exhaust gas catalyst system. In the first stage, a reduction in NOx emissions is effected in the exhaust leaving the combustion chamber. In the se...	05/19/1992
5106975	Hexahydropyrimidine derivatives When a phenol having substituents in at least the 2- and 4-positions but having a hydrogen atom in the 6-position, or a phenol having substituents in at least the 2- and 6-positions but having a hydrogen atom in the 4-position is reacted with formaldehyde...	04/21/1992
5091112	Reducing copper corrosiveness of organic sulfides Reducing the copper corrosiveness of organic sulfides by treating them with an alkali metal-containing or alkaline earth metal-containing substance capable of dissolving elemental sulfur (e.g., sodium hydroxide, sodium sulfide, etc.). The process is condu...	02/25/1992
5089156	Ashless or low-ash synthetic base compositions and additives therefor An ashless or low-ash oleaginous liquid composition comprising a major amount of hydrogenated poly-଱-olefin oligomer fluid having a viscosity in the range of about 2 to about 10 cSt at 100°C., and minor amounts of at least the following: A) hydroge...	02/18/1992
5071919	Substituted acylating agents and their production Polybutenyl substituted succinic acylating agents are formed by reacting (a) an acidic reactant represented by the general formula R--CO--CH.dbd.CH--CO--R' wherein R and R' are independently --OH, --O-lower alkyl, a halogen atom, or taken together are a single...	12/10/1991
5055112	Diesel particulate reducing 1,2-alkanediol additives A diesel fuel composition comprising a major amount of a hydrocarbon based compression ignition fuel and a minor particulate-reducing amount of an aliphatic 1,2-diol....	10/08/1991
5045089	Fuel compositions containing phenolic antioxidants Fuel compositions contain a liquid, partially-sulfurized, hindered phenol antioxidant composition prepared by reacting a liquid mixture of phenols which contains at least 50 weight percent of one or more reactive hindered phenols with sulfur monochloride ...	09/03/1991
5028345	Lubricating oil composition Lubricant compositions comprising an oil of lubricating viscosity and a cosulfurized blend of (a) a carboxylic acid ester material and (b) an ester, amide, ester-amide or fatty amine derivative which contains at least one polar substituent group such as a...	07/02/1991
5026493	Reduced ash content lubricants A reduced metal content lubricant contains the reaction product of a phosphosulfurized polyalkene and an amine, a polyalkene substituted phenol, and, optionally, a polyalkene sulfonate....	06/25/1991
4997456	Fuel compositions Detergent additives for reducing or preventing deposits in the carburetor or in injectors are described. They are produced by reacting (a) at least one mono- or polycarboxylic acylating agent containing an average of from about 12 to about 50 carbon atoms...	03/05/1991
4966720	Oil soluble sulfurized olefins and two temperature zone process for their preparation Sulfurized olefins such as isobutylene which are soluble in hydrotreated oils are prepared by reacting a basic, aqueous alcoholic solution of sodium sulfide with an adduct formed by adding olefin to sulfur monochloride at low temperatures until the mole r...	10/30/1990
4960530	Lubricating oil composition Engine wear and sludge are reduced by using in the engine crankcase a fomulated motor oil containing a small amount of a cosulfurized blend of a carboxylic acid ester material and a fatty acid oxyalkylated amine derivative selected from fatty acid amides,...	10/02/1990
4960528	Lubricating oil composition Engine wear and sludge are reduced by using in the engine crankcase a formulated motor oil containing a small amount of the combination of (i) an overbased alkaline earth metal sulfonate having a total base number of at least 100, (ii) a zinc dihydrocarby...	10/02/1990
4957643	Lubricant compositions Compounds having the formula: ##STR1## wherein: a. R is an organic radical selected from an alkyl group, an alkenyl group, an aryl group or an aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl ...	09/18/1990
4946610	Sulfur-bridged phenolic antioxidants A liquid, sulfur-bridged, hindered phenol antioxidant composition is prepared by reacting a mixture of hindered phenols with a sulfur chloride in the presence of a polar modifier. The composition is an effective antioxidant in lubricating oils without cau...	08/07/1990
4927552	Lubricating oil composition Compounds having the formula: ##STR1## wherein: a. each of R, R2 and R4 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms, an aryl group containing from 6 to about 15 carbon atoms or...	05/22/1990
4885365	Dithiocarbanate lubricant compositions Compounds having the formula: ##STR1## wherein: a. R is an organic radical selected from an alkyl group, an alkenyl group, an aryl group or an aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl ...	12/05/1989
4876375	Norbornyl dithiocarbamates Compounds having the formula: ##STR1## wherein: a. each of R, R2 and R4 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms, an aryl group containing from 6 to about 15 carbon atoms or...	10/24/1989
4857214	Oil-soluble phosphorus antiwear additives for lubricants Oil-soluble reaction products of inorganic phosphorus containing acids or anhydrides with a boron compound and ashless dispersants such as alkenyl succinimides are useful as antiwear/EP additives in lubricants....	08/15/1989
4855074	Homogeneous additive concentrates and their formation A homogeneous concentrate suitable for use as an additive for lubricating oils is formed from a long chain succinimide and a benzotriazole by heating a mixture of these materials in the presence of water or alkoxylated amines or dihydrocarbylphosphites or...	08/08/1989
4836942	Lubricant composition Compounds or mixtures of compounds having the formulae: ##STR1## wherein R is an alkyl group containing from 1 to 20 carbon atoms, n represents a number selected from the class consisting of zero and the integers from 1 through 6, R' represents a mem...	06/06/1989
4795583	Shift-feel durability enhancement Improved durability of shift-feel frictional characteristics in automotive transmission fluids is achieved by use of an initially substantially inert (friction-wise) compound--viz., an aliphatic tertiary amine having one long chain and two short chain gro...	01/03/1989
4639324	Lubricating compositions Lubricating oils having improved antioxidant and anti-wear properties are obtained by adding a minor amount of a reaction product made by reacting at least one aliphatic olefinically unsaturated hydrocarbon containing from about 8 to 36 carbon atoms (pref...	01/27/1987
4582939	Mercaptan production Catalytic process for the production of mercaptans by contacting unsaturated hydrocarbons with hydrogen sulfide in the presence of a sulfonic acid cation exchange resin catalyst....	04/15/1986
4553979	Diesel fuel compositions Coking in and around the injector nozzles of indirect injection compression ignition engines is reduced by means of distillate fuel with which has been blended suitable concentration of: (a) organic nitrate ignition accelerator, and (b) the condensation produc...	11/19/1985

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Assignee: Ethyl Petroleum Additives, Inc.