Oxygen Organic Compound Containing Patents (Class 252/392)
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Patent number: 4511366Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) a polymer of a C.sub.18 polyunsaturated aliphatic monocarboxylic acid (e.g. linoleic dimer and/or trimer) and (B) the reaction product of (i) a polyalkylene polyamine, (ii) a C.sub.18 monounsaturated aliphatic monocarboxylic acid (e.g. oleic acid), and (iii) an alkenyl succinic anhydride, in which the alkenyl group contains 8 to 30 carbon atoms.Type: GrantFiled: December 16, 1983Date of Patent: April 16, 1985Assignee: Ethyl Petroleum Additives, Inc.Inventors: Aubrey L. Burrows, Paul B. Mabley, Steven J. Field
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Patent number: 4511367Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) at least one monoalkenylsuccinic acid wherein the alkenyl group contains about 8 to 30 carbon atoms and (B) a substituted imidazoline, e.g., 2-heptadecenyl-1-(2-hydroxyethyl)imidazoline.Type: GrantFiled: June 13, 1984Date of Patent: April 16, 1985Assignee: Ethyl CorporationInventor: Gordon G. Knapp
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Patent number: 4505717Abstract: A novel fuel composition contains ethanol or methanol plus, as a corrosion inhibitor, a reaction product of a dialkyl amine and an isatoic anhydride, further reacted with a alkoxyalkyl amine.Type: GrantFiled: June 25, 1984Date of Patent: March 19, 1985Assignee: Texaco Inc.Inventor: Rodney L. Sung
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Patent number: 4504278Abstract: A novel fuel composition contains ethanol or methanol plus, as a corrosion inhibitor, a reaction product of a secondary amine, an isatoic anhydride and a (C.sub.10 -C.sub.14 alkoxy)-n-alkyl primary amine.Type: GrantFiled: June 27, 1984Date of Patent: March 12, 1985Assignee: Texaco Inc.Inventor: Rodney L. Sung
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Patent number: 4504279Abstract: A novel fuel composition contains ethanol methanol or gasohol plus, as a corrosion inhibitor, a reaction product of isatoic anhydride and a t-alkyl primary amine which has been further reacted with an alkoxyalkylaminoalkyl amine.Type: GrantFiled: July 9, 1984Date of Patent: March 12, 1985Inventor: Rodney L. Sung
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Patent number: 4502978Abstract: A method of enhancing corrosion inhibition of inorganic corrosion inhibitors, particularly stabilized phosphate corrosion inhibitors, when used in high hardness waters containing at least 800 ppm total hardness which comprises adding to the high hardness waters a combined product which includes both the inorganic corrosion inhibitor system and an effective amount of a water-soluble acrylic acid:acrylamide copolymer having an acrylic acid:acrylamide weight ratio between 1:4 and 1:2 and having a molecular weight between 1,000-25,000.Type: GrantFiled: November 8, 1982Date of Patent: March 5, 1985Assignee: Nalco Chemical CompanyInventors: John A. Romberger, Daniel A. Meier
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Patent number: 4501677Abstract: A lubricating oil composition with improved corrosion inhibiting properties comprising a major amount of a lubricating oil basestock and an effective amount of a complex of a selected heterocyclic nitrogen compound and an organometallic salt of a C.sub.4 to C.sub.22 fatty acid.Type: GrantFiled: November 2, 1983Date of Patent: February 26, 1985Assignee: Exxon Research & Engineering Co.Inventor: Jacob J. Habeeb
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Patent number: 4501679Abstract: Bicyclic amide ketals such as 1-aza-4,6-dioxabicyclo[3.3.0]octanes have utility as water or acid scavengers for addition to functional fluids.Type: GrantFiled: February 21, 1984Date of Patent: February 26, 1985Assignee: The Dow Chemical CompanyInventors: Robert L. Reierson, Hugh F. Hussey, Edmund P. Woo
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Patent number: 4501674Abstract: A method is provided for reducing the corrosiveness of an aqueous fluid, particularly water containing dissolved oxygen and corrosive chemical agents such as naturally-occurring brine. According to the method, an enzyme which reacts with a substrate and consumes oxygen is added to the water along with a suitable substrate. Crude oil or other hydrocarbon material is also added to the water. The resulting water is less corrosive than water not containing the described system. In another embodiment of the invention, a water-flood method of post-primary oil recovery is provided in which the brine used is made less corrosive to metal drilling equipment by the addition to the water of an oxygen-consuming enzyme, a suitable substrate for the enzyme, and crude oil or other hydrocarbon material.Type: GrantFiled: September 1, 1982Date of Patent: February 26, 1985Assignee: Phillips Petroleum CompanyInventor: Yulin Wu
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Patent number: 4499006Abstract: A series of novel water-dispersible corrosion inhibiting solutions are disclosed which contain a composition which includes the reaction product of an amine mixture and an organic monomer acid mixture. A process for the inhibition of corrosion in aqueous environment is also disclosed. The process is particularly useful for protecting metal surfaces in subterranean petroleum pumping wells.Type: GrantFiled: June 6, 1983Date of Patent: February 12, 1985Inventors: Frederick W. Valone, Joseph Rutledge
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Patent number: 4497702Abstract: A hydrocarbonaceous liquid stream is modified to contain a minor amount of the amide reaction product of a polyalkylene polyamine and a neo-acid having 5 to 20 carbon atoms, the neo-acid having three alkyl groups on the carbon atom which is in the alpha position relative to the carboxylic group, whereby corrosion of iron and other metals contacted by said stream is significantly reduced.Type: GrantFiled: August 9, 1982Date of Patent: February 5, 1985Assignee: Atlantic Richfield CompanyInventors: Richard F. Miller, Tony S. Go, George R. Wilson, III
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Patent number: 4496368Abstract: Novel condensation products of N-alkyl-alkylenediamines and isopropylidene malonate are prepared by refluxing the reactants in solvents inert to the reactants, removing this solvent and extracting the reaction system with an inert solvent such as xylene.Type: GrantFiled: June 17, 1983Date of Patent: January 29, 1985Assignee: Texaco Inc.Inventors: Benjamin J. Kaufman, Rodney L. Sung
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Patent number: 4490155Abstract: The Mannich reaction products of certain diaminopropanes with formaldehyde and salicylic acids are potent carburetor detergents and corrosion inhibitors in hydrocarbon fuels, particularly in gasoline.Type: GrantFiled: August 17, 1983Date of Patent: December 25, 1984Assignee: Texaco Inc.Inventor: Benjamin J. Kaufman
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Patent number: 4487745Abstract: The removal of dissolved oxygen from aqueous systems, such as steam generating systems, thereby inhibiting the corrosion of metal surfaces by adding to the system a composition in which the effective component is an oxime of the formula: ##STR1## in which R.sub.1 and R.sub.2 are the same or different and are selected from hydrogen, lower alkyl groups of 1-8 carbon atoms and aryl groups.Type: GrantFiled: August 31, 1983Date of Patent: December 11, 1984Assignee: Drew Chemical CorporationInventors: Charles O. Weiss, Dwight E. Emerich
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Patent number: 4487708Abstract: An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine.Type: GrantFiled: March 12, 1981Date of Patent: December 11, 1984Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4478604Abstract: Certain branched chain amines and carboxylic derivatives thereof are useful additives for lubricants and fuels.Type: GrantFiled: April 1, 1982Date of Patent: October 23, 1984Assignee: Phillips Petroleum CompanyInventor: Alexander D. Schuettenberg
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Patent number: 4474684Abstract: Elastomers with corrosion-inhibiting properties, characterized by containing a reaction product of an amine of the formula: ##STR1## wherein X represents a number from 5 to 30,R denotes hydrogen or C.sub.1 -C.sub.6 alkyl, andR.sub.1 denotes C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.6 cycloalkyl or C.sub.7 -C.sub.8 aralkyl,with an aromatic carboxylic acid and optionally a fatty acid.Type: GrantFiled: November 17, 1982Date of Patent: October 2, 1984Assignee: Bayer AktiengesellschaftInventors: Ernst Roos, Sigurd Behr
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Patent number: 4474671Abstract: Nitrogen- and boron-containing products, and their use in lubricants, are disclosed. Particularly, selected diamines are reacted with boron compounds and sarcosines to give partially borated, partial sarcosine salts of the diamine.Type: GrantFiled: February 4, 1983Date of Patent: October 2, 1984Assignee: Mobil Oil CorporationInventors: Richard S. Herd, Andrew G. Horodysky
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Patent number: 4473491Abstract: Alkanolamine salts of amide acids having the formula: ##STR1## in which the circle represents a single nucleous aromatic ring or a monocyclic or bicyclic aliphatic ring system in each case with 5 or 6 carbon atoms per ring in which R.sup.1 represents an isoalkyl radical with the longest chain of 6 to 8 carbon atoms and a total of 8 to 12 carbon atoms; R.sup.2 represents a radical alkylene-X wherein the alkylene chain is a branched or straight chain and contains 1 to 4 carbon atoms; X represents OR.sup.3, O(C.sub.2 H.sub.4 O).sub.n -R.sup.3, O(C.sub.3 H.sub.6 O).sub.n -R.sup.3, NR.sup.3 R.sup.3, CN, CONH.sub.2, and COOR.sup.3 ; R.sup.3 represents hydrogen or C.sub.1 to C.sub.4 alkyl; n is an integer of 1 to 4; and wherein the carboxyl and carbonamide groups in said formula are bonded to non-olefinic carbon atoms and arranged in adjacent positions. The use of these salts as corrosion inhibitors in aqueous systems is also disclosed.Type: GrantFiled: June 11, 1982Date of Patent: September 25, 1984Assignee: BASF AktiengesellschaftInventors: Walter Trautmann, Elmar Getto
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Patent number: 4469615Abstract: A water treating composition comprising a water-soluble copolymer consisting of, as the components, (A) an addition reaction product of a glycidyl ether or glycidyl ester and an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (B) another vinyl monomer. In one embodiment, the water treating composition further comprises one or more conventional corrosion preventing/inhibiting agents.Type: GrantFiled: November 9, 1982Date of Patent: September 4, 1984Assignees: Kohryu Industrial Co. Ltd., Toagosei Chemical Industrial Co.Inventors: Setsuo Tsuruoka, Iehito Tasaka, Yuji Kawamura, Shizuo Kimata, Tatsuki Wabiko
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Patent number: 4466903Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.Type: GrantFiled: June 16, 1983Date of Patent: August 21, 1984Assignee: PPG Industries, Inc.Inventor: Steven E. Pamer
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Patent number: 4460482Abstract: A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an amine, a hydrocarbon or alcohol diluent and carbon dioxide. The composition can be prepared by pressuring carbon dioxide gas into a solution of the amine. The composition is particularly useful in the treatment of down-well metal surfaces in oil and gas wells to inhibit the corrosion of the metal.Type: GrantFiled: September 1, 1981Date of Patent: July 17, 1984Assignee: Phillips Petroleum CompanyInventor: Yulin Wu
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Patent number: 4460379Abstract: A fuel composition comprising a mixture of hydrocarbons boiling in the middle distillate boiling range and, an effective stabilizing amount of a hydrocarbyl polyoxypropylene di(polyoxyethylene)amine represented by the formula: ##STR1## wherein R is a hydrocarbon radical having from 1 to 50 carbon atoms, x and y have values from 1 to 16, the sum of x plus y is from 2 to about 17, and z is from 1 to about 20.Type: GrantFiled: August 30, 1982Date of Patent: July 17, 1984Assignee: Texaco Inc.Inventors: William M. Sweeney, Rodney L. Sung, Wheeler C. Crawford
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Patent number: 4452758Abstract: Antifreeze compositions and a process for inhibiting the corrosion of aluminum in contact with aqueous liquids are disclosed. The antifreeze compositions comprise a combination of an alkanolamine, an alkali metal phosphate, a heterocyclic nitrogen compound, as defined, and a conventional corrosion inhibitor in effective corrosion inhibiting amounts. The aqueous liquid can be an alcohol such as ethylene glycol.Type: GrantFiled: May 16, 1983Date of Patent: June 5, 1984Assignee: BASF Wyandotte CorporationInventors: Joe C. Wilson, Stanley T. Hirozawa, Stephen E. Eisenstein, Jerrold F. Maxwell
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Patent number: 4452710Abstract: Corrosion inhibiting aqueous functional fluids having high stability are provided which contain (a) water, (b) a corrision inhibiting, surface active, water soluble or dispersible alkali metal, ammonium or organic amine salt of a water insoluble carboxylic acid group terminated monoamide, (e.g. the triethanolamine salt of the carboxylic acid terminated monoamide reaction product between maleic acid and 1-amino-2-ethyl hexane), (c) a second surface active agent and optionally, (d) water soluble or dispersible lubricant. These functional fluids are useful as a metal working fluid or hydraulic fluid.Type: GrantFiled: September 22, 1982Date of Patent: June 5, 1984Assignee: Cincinnati Milacron Inc.Inventor: Mark A. Williams
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Patent number: 4451671Abstract: Thus, the invention relates to compounds of the formula I ##STR1## where R is aromatic, preferably phenylene, R.sub.1 and R.sub.2 denote C.sub.1 -C.sub.4 -alkyl, preferably C.sub.1 -C.sub.2 -alkyl, R.sub.3 denotes methyl or ethyl, x and z together denote a number from 2 to 360, preferably from 2 to 140, y denotes a number from 15 to 70, preferably 25 to 60, n denotes a number from 1 to 10 and A.sup.- denotes an anion, preferably chloride or bromide, a process for their preparation and their use as demulsifiers for demulsifying crude oil emulsions and as corrosion inhibitors in equipment for lifting and processing natural gas and crude oil.Type: GrantFiled: August 30, 1982Date of Patent: May 29, 1984Assignee: Hoechst AktiengesellschaftInventors: Helmut Diery, Norbert Wester, Martin Hille
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Patent number: 4445907Abstract: Alcohols may be inhibited against corrosion by addition there to of an amide reaction product of (i) ##STR1## (preferably in the form of the acid, acid chloride or ester) and (ii) an amino tetrazole.Type: GrantFiled: November 14, 1980Date of Patent: May 1, 1984Assignee: Texaco Inc.Inventor: Rodney L. Sung
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Patent number: 4444668Abstract: A composition and method for well completion and workover. The composition comprises water, various halogen salts and an acetylenic alcohol. Optionally, other ingredients can be added to the composition. The method is carried out by contacting the well at sufficient hydrostatic pressure to control the well.Type: GrantFiled: October 4, 1983Date of Patent: April 24, 1984Assignee: Halliburton CompanyInventors: Michael L. Walker, Joe W. Johnson, Jr.
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Patent number: 4440666Abstract: A hydrocarbonaceous liquid stream is modified to contain a minor amount of the amide reaction product of a polyalkylene polyamine, a neo-acid having 5 to 20 carbon atoms, the neo-acid having three alkyl groups on the carbon atom which is in the alpha position relative to the carboxylic group, and an aliphatic fatty acid having 10 to 30 carbon atoms, whereby corrosion of iron and other metals contacted by said stream is significantly reduced.Type: GrantFiled: August 6, 1982Date of Patent: April 3, 1984Assignee: Atlantic Richfield Co.Inventors: Richard F. Miller, Tony S. Go, George R. Wilson, III
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Patent number: 4440731Abstract: Corrosion inhibiting compositions for use in aqueous absorbent gas-liquid contacting processes for recovering carbon dioxide (CO.sub.2) from industrial gas and oil combustion and partial combustion process flue gases, particularly employing copper carbonate, in combination with one or more of dihydroxyethylglycine, alkali metal permangenate, alkali metal thiocyanate, nickel or bismuth oxides with or without an alkali metal cartonate. The inhibitors are effective in reducing corrosion of metals in contact with the aqueous absorbent in the absorbent regeneration section of the plant as well as reduce the thermal degradation of the absorbent when high oxygen content combustion gases are treated to recover the CO.sub.2.Type: GrantFiled: September 8, 1981Date of Patent: April 3, 1984Assignee: The Dow Chemical CompanyInventor: Roscoe L. Pearce
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Patent number: 4438013Abstract: Disclosed are compositions comprising the reaction products of poly(oxyalkylated) hydrazine and at least one compound selected from the group consisting of phosphorylation agents, thiophosphorylation agents, and mixtures thereof; wherein the poly(oxyalkylated) hydrazine has the formula: ##STR1## wherein each R is individually selected from hydrogen, lower alkyl groups having 1 to 4 carbon atoms, phenyl and mixtures thereof; the sum of w, x, y and z is from about 4 to about 25, and wherein the mole ratio of said poly(oxyalkylated) hydrazine to said compound being from about 0.1:1 to about 10:1. These compositions are shown to be effective corrosion inhibitors in corrosive aqueous solutions such as brines and acid metal-treating baths.Type: GrantFiled: May 27, 1983Date of Patent: March 20, 1984Assignee: Olin CorporationInventor: Gregory W. Grynkewich
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Patent number: 4437436Abstract: A method of operating a spark ignition internal combustion engine with unleaded gasoline is disclosed wherein methylcyclopentadienyl manganese tricarbonyl (MMT) is used as a primary antiknock compound and from about 5 to about 60 moles of benzoylacetone or methyl benzoylacetone per mole of manganese is used as a co-antiknock compound. These co-antiknock compounds are particularly suitable because they do not react with wet rusted steel in gasoline distribution systems, nor with terneplate surface coatings in automobile fuel storage tanks.Type: GrantFiled: October 4, 1982Date of Patent: March 20, 1984Assignee: Shell Oil CompanyInventors: L. B. Graiff, John L. Laity
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Patent number: 4436639Abstract: The subject invention relates to salts of polymaleic acids having a molecular weight between 200 and 1500 and to their use in preventing the corrosion of metal caused by hydrogen sulfide and carbon dioxide in water-in-oil emulsions such as crude oil.Type: GrantFiled: May 10, 1982Date of Patent: March 13, 1984Assignee: BASF AktiengesellschaftInventors: Knut Oppenlaender, Karl Stork, Klaus Barthold
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Patent number: 4435361Abstract: A series of novel oil-dispersible corrosion inhibiting solutions are disclosed which contain dicyclopentadiene (3a, 4, 7, 7a-tetrahydro-4, 7 methanoindene) sulfonate salts along with an organic corrosion inhibitor in a low molecular weight solvent. The inhibiting solutions containing dicyclopentadiene sulfonate salts are effective in dramatically reducing corrosion rates in the oil field, especially pitting from hydrogen sulfide.Type: GrantFiled: September 20, 1982Date of Patent: March 6, 1984Assignee: Texaco Inc.Inventors: Michael G. DaGue, Frederick W. Valone
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Patent number: 4433977Abstract: Disclosed is an in situ or "one pot" process for making a fuel additive comprising reacting an excess of at least one N-primary alkylalkylene diamine with maleic anhydride in the presence of from 20 to 36 weight percent of a mineral oil reaction diluent at a temperature ranging from ambient to about 225.degree. F. and recovering a product containing a primary aliphatic hydrocarbon amino alkylene substituted asparagine, an N-primary alkylalkylene diamine in the reaction oil with the product having a by-product succinimide content not in excess of 1.0 weight percent, based on the weight of asparagine present.Type: GrantFiled: September 21, 1981Date of Patent: February 28, 1984Assignee: Texaco Inc.Inventors: Robert C. Carrier, Billy R. Allen
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Patent number: 4430196Abstract: Methods and compositions are disclosed for neutralizing acidic components in petroleum refining units. The neutralizing agent comprises a member selected from the group of dimethylaminoethanol and dimethylisopropanolamine. The neutralizing agent may be added directly to the charge, in a reflux line, or directly to the overhead line of the refining unit. In those instances in which sour crude is to be refined, it is desirable that dimethylisopropanolamine be used in conjunction with the dimethylaminoethanol. The neutralizing agents are added in an amount sufficient to elevate the pH of the condensate (as measured at the accumulator) to within the pH range of 4.5-7.Type: GrantFiled: March 28, 1983Date of Patent: February 7, 1984Assignee: Betz Laboratories, Inc.Inventor: Joseph H. Y. Niu
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Patent number: 4427448Abstract: An oil-based corrosion inhibitor containing an aliphatic amine, a fatty acid and its ester, and an organotin compound provides improved corrosion resistance to metals and is easily removed when the metals are to be processed.Type: GrantFiled: June 7, 1982Date of Patent: January 24, 1984Assignee: International Business Machines CorporationInventors: Lenas J. Hedlund, Viswanadham Puligandla
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Patent number: 4427562Abstract: N-alkoxyalkyl amides may be formed by the reaction of primary alkoxyalkylamines with carboxylic acids such as formic acid, or alternatively by ammonolysis of the appropriate formate ester. The resultant amides exhibit friction reducing properties when incorporated in additive amounts in lubricants and fuels. Extremely low concentrations of such additives, i.e. N-alkoxyalkyl formamides in lubricating oils result in vastly improved, i.e. lowered coefficients of friction. By virtue of the friction reducing characteristics and lubricity properties, the additive compositions of the present invention exhibit reduced wear on rubbing surfaces.Type: GrantFiled: May 6, 1982Date of Patent: January 24, 1984Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Milton Braid
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Patent number: 4422953Abstract: This invention relates to a method of inhibiting corrosion in halohydrocarbon systems such as haloethylene or other corrosive systems, which comprises treating such system with alkyl, alkenyl, or alkyl-X succinic acids or derivatives thereof, for example, salts thereof, where X is an oxygen, sulfur, amino, etc. containing group.Type: GrantFiled: April 21, 1982Date of Patent: December 27, 1983Assignee: Petrolite CorporationInventors: Mark T. Grace, Michael I. Naiman, Eddie C. French
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Patent number: 4421659Abstract: Zwitterionic quaternary ammonium sulfates of the formulas hereinafter disclosed are provided as new compounds and as effective lubricant and fuel additives. They are multifunctional, having, among others, the ability to reduce corrosion, oxidation and friction in, for example, an internal combustion engine and thereby to reduce fuel consumption.Type: GrantFiled: June 30, 1982Date of Patent: December 20, 1983Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski
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Patent number: 4420337Abstract: A corrosion inhibited composition containing an aqueous gas conditioning solution such as an alkanolamine with small amounts of soluble trivalent bismuth compounds. The compositions are useful to separate acid gases such as carbon dioxide from feed streams in gas conditioning apparatus with minimum amounts of corrosion of the stainless steel.Type: GrantFiled: July 1, 1982Date of Patent: December 13, 1983Assignee: The Dow Chemical CompanyInventors: Billy D. Oakes, Michael S. Dupart, David C. Cringle
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Patent number: 4420414Abstract: Novel oil-dispersible corrosion inhibiting solutions are disclosed which contain an ethoxylated tertiary amine along with an organic corrosion inhibitor in a solvent. The inhibiting solutions containing the instant ethoxylated amines are effective in reducing corrosion rates in the oil field.Type: GrantFiled: April 11, 1983Date of Patent: December 13, 1983Assignee: Texaco Inc.Inventor: Frederick W. Valone
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Patent number: 4419266Abstract: An aqueous composition for inhibiting the corrosion of metals is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-(1-ethylpentyl)prop-1-yne.Type: GrantFiled: February 25, 1982Date of Patent: December 6, 1983Assignee: GAF CorporationInventors: Eugene V. Hort, Lowell R. Anderson, Dru W. Alwani
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Patent number: 4419105Abstract: Alcohols may be inhibited against corrosion by addition thereto of a reaction product of a maleic anhydride and certain amines typified by alkyl isopropoxy aminopropyl amines.Type: GrantFiled: March 18, 1982Date of Patent: December 6, 1983Assignee: Texaco Inc.Inventor: Rodney L. Sung
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Patent number: 4414125Abstract: A corrosion inhibited composition comprises an aqueous drilling, cutting, or polishing agent, an aqueous hydraulic fluid or an aqueous antifreeze compound; and an alkali metal salt, or an aliphatic amine salt of a mixture of 2- and 3-C.sub.6-12 -alkyladipic acids, the amount of this acid component being effective as a corrosion inhibitor.Type: GrantFiled: December 1, 1980Date of Patent: November 8, 1983Assignee: Chemische Werke Huels AktiengesellschaftInventors: Hans S. H. Keil, deceased, Helmut Alfs, Klaus Schulze
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Patent number: 4414126Abstract: Compositions and method of using said compositions for inhibiting the corrosion of high lead solder in aqueous systems are disclosed. Alkali metal aliphatic phosphonates in combination with alkali metal mercaptobenzothiazoles are effective inhibitors for the corrosion of high lead solder in aqueous systems.Type: GrantFiled: October 22, 1981Date of Patent: November 8, 1983Assignee: BASF Wyandotte CorporationInventor: Joe C. Wilson
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Patent number: 4406811Abstract: A composition and method for controlling corrosion in aqueous systems with multiple metallurgies such as industrial cooling equipment is disclosed. The composition generally includes: (1) a triazole chosen from the group consisting of tolyltriazole and benzotriazole, (2) an aliphatic mono- or di-carboxylic acid having from 8-38 carbon atoms that is capable of controlling corrosion of mild steel, and (3) a nonionic wetting agent. In an alternate embodiment, the composition also includes a scale inhibitor chosen from the group consisting of polyol esters, 1-hydroxyethylidene-1,1-diphosphonic acid, amino tri(methylene phosphonic acid), and 2-phosphono-butane-tricarboxylic acid-1,2,4. The method of the invention entails the use of the above compositions in aqueous systems at dosage levels of at least 10 ppm.Type: GrantFiled: January 16, 1980Date of Patent: September 27, 1983Assignee: Nalco Chemical CompanyInventors: Ronald Christensen, Audrone Gelazis
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Patent number: 4405494Abstract: Polyhydroxy-polyalkylene-polyamine salts of maleic amide acids are useful metal corrosion inhibitors for use in water-in-oil emulsions.Type: GrantFiled: December 10, 1981Date of Patent: September 20, 1983Assignee: BASF AktiengesellschaftInventors: Knut Oppenlaender, Erich Schwartz, Klaus Barthold, Wilhelmus Slotman
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Patent number: 4404114Abstract: An aluminum corrosion inhibitor composition comprising an aqueous and/or alcohol solution of a polymerizable-acid graft copolymer plus at least one organic and/or inorganic silicate, together with a method for using such composition.Type: GrantFiled: June 17, 1982Date of Patent: September 13, 1983Assignee: Union Carbide CorporationInventors: Paul H. Mohr, William N. Matulewicz
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Patent number: 4404001Abstract: As a detergent and corrosion inhibiting fuel additive, the product resulting from reaction of trimellitic anhydride and a N- C.sub.10 -C.sub.25 -hydrocarbyl-1,3-diaminopropane and a fuel composition containing same.Type: GrantFiled: September 2, 1982Date of Patent: September 13, 1983Assignee: Texaco Inc.Inventors: Benjamin J. Kaufman, Sheldon Herbstman, Mark Levin