Patents Represented by Attorney Ernest A. Schaal
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Patent number: 6294506Abstract: A lubricating oil composition has a major amount of an oil of lubricating viscosity, a minor amount of a carbonated sulfurized metal alkyl phenate and, a minor amount of a carbonated metal alkyl aryl sulfonate. The total base equivalents donated by the phenate is more than 85% of the total base equivalents donated by the phenate and sulfonate. The composition also has alkenyl or alkyl succinimide additives that are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than four nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate.Type: GrantFiled: July 15, 1994Date of Patent: September 25, 2001Assignee: Chevron Chemical CompanyInventors: Terry V. Friesen, James J. Harrison, William R. Ruhe, Jr.
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Patent number: 6110879Abstract: The present invention provides for a lubricating composition including: a hydrocracker-derived, highly naphthenic, low viscosity index mineral oil; from about 2 wt. % to about 14 wt. % of at least one polymethacrylate polymer; and from about 2 wt. % to about 14 wt. % of a performance additive package. The hydrocracker-derived, highly naphthenic, low viscosity index mineral oil is prepared by: (1) passing a first bottoms portion including not more than about 67 wt. % of a fuels hydrocracker bottoms recycle stream to a dewaxing zone; and (2) passing a second bottoms portion including at least about 33 wt. % of the recycle stream back to the fuels hydrocracker for additional processing; and where the recycle stream has a viscosity at 100.degree. C. of less than about 4.Type: GrantFiled: October 15, 1998Date of Patent: August 29, 2000Assignee: Chevron U.S.A. Inc.Inventors: David C. Kramer, John A. Zakarian, Jay M. Peterson, Russell R. Krug, Jaime Lopez, Stephen K. Lee, Mark L. Sztenderowicz, Joseph M. Pudlak
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Patent number: 6054419Abstract: Mixture of alkyl aryl sulfonates of superalkalinized alkaline earth metals comprising:(a) 50 to 85% by weight of a mono alkyl phenyl sulfonate with a C.sub.14 to C.sub.40 linear chain wherein the molar proportion of phenyl sulfonate substituent in position 1 or 2 is between 0 and 13%, and(b) 15 to 50% by weight of a heavy alkyl aryl sulfonate, wherein the aryl radical is phenyl or not, and the alkyl chains are either two linear alkyl chains with a total number of carbon atoms of 16 to 40, or one or a plurality of branched alkyl chains with on average a total number of carbon atoms of 15 to 48.Inasmuch as these mixtures contain less than 10% of linear mono alkyl phenyl sulfonate substituted in position 1 or 2 of the linear alkyl chain, they exhibit properties making them fit for use as detergent/dispersant additives for lubricating oils.Type: GrantFiled: May 29, 1998Date of Patent: April 25, 2000Assignee: Chevron Chemical Company LLCInventor: Jean-Louis Le Coent
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Patent number: 6051129Abstract: A dewaxing process for lowering the haze point of a bright stock which includes contacting a bright stock in the presence of added hydrogen gas with a Zeolite EU-1 catalyst in combination with a ZSM-48 and/or SSZ-32 catalyst.Type: GrantFiled: July 24, 1998Date of Patent: April 18, 2000Assignee: Chevron U.S.A. Inc.Inventors: Thomas V. Harris, R. Norm Reynolds, Jr., Roger F. Vogel, Donald S. Santilli
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Patent number: 6031144Abstract: The residual olefin content of the alkylation reaction product of a single-ring aromatic hydrocarbon with an olefin is reduced by removing at least a portion of the non-alkylated single-ring aromatic hydrocarbon, then reacting the remaining alkylation reaction product at about atmospheric pressure and at a temperature of about from 100.degree. to 250.degree. C. in the presence of an acidic catalyst. The olefin has at least sixteen carbon atoms. The acidic catalyst can be a molecular sieve (such as a natural or synthetic zeolite) or clay.Type: GrantFiled: August 6, 1997Date of Patent: February 29, 2000Assignee: Chevron Chemical Company LLCInventors: Curt B. Campbell, Thomas V. Harris
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Patent number: 5942476Abstract: A low-viscosity overbased hydrocarbyl phenate-carboxylate is produced by contacting a mixture of a hydrocarbyl phenate, at least one solvent, metal hydroxide, aqueous metal chloride, and an alkyl polyhydric alcohol containing from one to five carbon atoms with carbon dioxide under overbasing reaction conditions. The hydrocarbyl phenate is treated with a long-chain carboxylic acid, anhydride or salt thereof to form the hydrocarbyl phenate-carboxylate before, during, or subsequent to overbasing. The hydrocarbyl phenate can be sulfurized or unsulfurized.Type: GrantFiled: June 3, 1998Date of Patent: August 24, 1999Assignee: Chevron Chemical CompanyInventor: Curt B. Campbell
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Patent number: 5939594Abstract: A superalkalinized alkylaryl sulfonate of alkaline earth metal is disclosed. The aryl radical is either a tolyl, xylyl, o xylyl, ethyl phenyl, or cumenyl radical. The alkyl chain is a linear chain that contains between 14 and 40 carbon atoms, and the aryl sulfonate radical of alkaline earth metal is fixed, in a molar proportion comprised between 0 and 13% in positions 1 or 2 of the linear alkyl chain.Type: GrantFiled: March 6, 1996Date of Patent: August 17, 1999Inventor: Jean-Louis Le Coent
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Patent number: 5922922Abstract: An alkylated aromatic hydrocarbon is produced having the following properties: (a) less than 40 wt. % of the alkylated aromatic hydrocarbon is 2-aryl; and (b) at least 20 wt. % of the alkylated aromatic hydrocarbon is a monoalkylate. That alkylated aromatic hydrocarbon is produced by isomerizing a normal alpha-olefin having from 20 to 28 carbon atoms in the presence of a first acidic catalyst to produce a partially-branched, isomerized olefin, then either benzene or toluene is alkylated with the partially-branched, isomerized olefin in the presence of a second solid, acidic catalyst. The first acidic catalyst can be a molecular sieve with a one-dimensional pore system. The second acidic catalyst can be a zeolite Y having a silica to alumina ratio of at least 40:1.Type: GrantFiled: July 17, 1997Date of Patent: July 13, 1999Assignee: Chevron Chemical CompanyInventors: Thomas V. Harris, Curt B. Campbell, Mohammed M. Habib
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Cross-linked succinimides from an acid derivative, a polyamine, and a polycarboxylic acid derivative
Patent number: 5880070Abstract: A polyalkylene succinimide composition prepared by reacting a mixture of an acid derivative, a polycarboxylic acid derivative; and a polyamine under reactive conditions. The acid derivative can be an alkenyl or alkylsuccinic acid derivative, a copolymer of a first unsaturated acidic reagent and a 1,1-disubstituted olefin, or mixtures of the alkenyl or alkylsuccinic acid derivative and the copolymer. The total reaction mixture contains from 4 to 40 wt. % of the polycarboxylic acid derivative, and contains from 0.1 to 1.5 equivalents of polyamine per equivalent of acidic groups of the acid derivative plus the acidic groups of the polycarboxylic acid derivative.Type: GrantFiled: August 20, 1996Date of Patent: March 9, 1999Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr. -
Patent number: 5872083Abstract: A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an .alpha.-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.Type: GrantFiled: July 29, 1997Date of Patent: February 16, 1999Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr.
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Patent number: 5866520Abstract: A lubricant composition is disclosed that is suitable for direct fuel injected, crankcase-scavenged two-stroke cycle engines. That lubricant composition has a major amount of at least one oil of lubricating viscosity, a minor amount of a lubricity additive, a polyalkyl amide, an imidazoline, a polyisobutylene, and a functionalized polyisobutylene. The lubricity additive contains glycerol monooleate, an acid aliphatic aromatic amine-phosphate, and sodium sulfonate. The acid aliphatic aromatic amine-phosphate has a phosphorus/oxygen atom ratio of from 4.0:1 to 4.5:1, and at least 1.2 equivalents of acid to 1.0 equivalents of base.Type: GrantFiled: January 29, 1997Date of Patent: February 2, 1999Assignee: Chevron Chemical CompanyInventors: Sumanth Addagarla, Glenn E. Callis
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Patent number: 5861363Abstract: A lubricating oil composition for internal combustion engines giving improved soot dispersancy. That lubricating oil composition has a mixture of borated and carbonated polyalkylene succinimides derived from different molecular weight polyalkylenes. The molecular weight of the polyalkylenes from which the carbonated polyalkylene succinimide is derived is at least 300 greater than the molecular weight of the polyalkylenes from which the borated polyalkylene succinimide is derived.Type: GrantFiled: January 29, 1998Date of Patent: January 19, 1999Assignee: Chevron Chemical Company LLCInventors: William W. Willis, Jr., Robert L. Freerks
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Patent number: 5853434Abstract: A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an .alpha.-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.Type: GrantFiled: July 29, 1997Date of Patent: December 29, 1998Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr.
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Patent number: 5851965Abstract: A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an .alpha.-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.Type: GrantFiled: July 29, 1997Date of Patent: December 22, 1998Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr.
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Patent number: 5849675Abstract: A hydraulic system containing a piston-type pump having wear surfaces containing copper or a copper alloy, and, optionally, a vane-type pump having wear surfaces containing steel, uses an antiwear hydraulic fluid having an oil of lubricating viscosity and minor amounts of zinc dithiophosphate and a wear moderating agent. The wear moderating agent can be aliphatic polyol esters, boric acid derivatives of aliphatic polyol esters, aliphatic amines, aliphatic polyamines, aliphatic imidazolines, or mixtures of any combination thereof. The aliphatic groups of the wear moderating agent are substantially straight-chained, and the wear moderating agent contains at least ten carbon atoms.Type: GrantFiled: April 10, 1997Date of Patent: December 15, 1998Assignee: Chevron Chemical CompanyInventors: Stuart H. Brown, Todd Brookhart
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Patent number: 5849676Abstract: A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an .alpha.-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.Type: GrantFiled: July 29, 1997Date of Patent: December 15, 1998Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr.
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Patent number: 5821205Abstract: A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an .alpha.-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.Type: GrantFiled: December 1, 1995Date of Patent: October 13, 1998Assignee: Chevron Chemical CompanyInventors: James J. Harrison, William R. Ruhe, Jr.
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Patent number: 5807814Abstract: Oil soluble compounds having the formula: ##STR1## wherein R and R.sup.1 are independently cyano, alkoxycarbonyl, aryloxycarbonyl, alkenyloxycarbonyl, alkylcarbonyl, arylcarbonyl, alkenylcarbonyl, alkylsulfonyl, arylsulfonyl, alkenylsulfonyl, substituted aminocarbonyl, alkylphosphoryl, arylphosphoryl, alkenylphosphoryl, aryl, or heterocyclics, or together form a carbocycle or heterocycle, and R.sup.2 and R.sup.3 are independently alkyl, alkenyl, hydroxyalkyl, sulfurized alkyl, alkoxycarbonylalkyl, arylalkyl, or borated hydroxyalkyl, with the proviso that R, R.sup.1, R.sup.2 and R.sup.3 together contain sufficient carbon atoms to render the compound oil soluble in an oil of lubricating viscosity. The compound are useful as wear protectants or extreme pressure agents to enhance wear protection or extreme pressure properties in lubricating oils and greases.Type: GrantFiled: July 5, 1996Date of Patent: September 15, 1998Assignee: Chevron Chemical CompanyInventor: Andrew W. Ho
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Patent number: 5808145Abstract: Dispersant detergent additives for lubricating oils prepared by neutralization, carboxylation, sulfurization-overalkalinization, carbonation, distillation, filtering and degassing from alkyl phenols containing 35-85% by weight of linear alkyl substituents. The process does not require, during the neutralizing phase, the presence of a third solvent, which, by forming an azeotropic mixture with water promotes the elimination of water arising from the neutralizing reaction. The additives of the invention have improved stability to hydrolysis and improved dispersion properties, improved compatibility and improved foaming properties.Type: GrantFiled: November 25, 1996Date of Patent: September 15, 1998Inventors: Jean-Louis Le Coent, Jacques Cazin, Thierry Triconnet, William W. Willis, Jr.
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Patent number: H2008Abstract: A food flagging device has a flag stem, a time identification means, a magnet support platform, and a magnetic means. The time identification means is either attached to, or is contained within, the flag stem. The magnet support platform is either attached to, or is contiguous with, the flag stem. The magnetic means is attached to the magnet support platform and has a magnetic field that is sufficiently strong to hold the food flagging device to a stainless steel surface. The food flagging device is heat-resistant and is capable of being sanitized.Type: GrantFiled: February 17, 1999Date of Patent: January 1, 2002Assignee: Chevron Products Company, a division of Chevron U.S.A. Inc.Inventor: Mark R. Johnson