Phenol Or Quinone Radical Containing Patents (Class 252/393)
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Patent number: 5143943Abstract: Polyether polyols and polyurethane foams are stabilized by including therein a liquid stabilizer composition of (a) 2,6-di-tert-butyl-4-sec-butylphenol, (b) a reaction product of diisobutylene, styrene and diphenylamine and (c) phenothiazine or C.sub.9-26 -alkyl substituted phenothiazine and wherein the ratio of the phenol to the reaction product is about 1:5 to 5:1 and the ratio of the mixture of components (a) and (b) to the phenothiazine compound is about 5.0:0.1 to 4.0:1.0. The stabilizer composition may further contain trihydrocarbyl phosphite to stabilize the color of same.Type: GrantFiled: February 18, 1992Date of Patent: September 1, 1992Assignee: R. T. Vanderbilt Company, Inc.Inventors: Richard A. Suhoza, Bruce R. Garney, Robert B. Lauder
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Patent number: 5094814Abstract: A combination product containing (a) dihydroxyacetone, (b) hydroquinone, and (c) a volatile amine that is capable of removing oxygen and neutralizing carbon dioxide in industrial waters, particularly boiler waters, including boiler feed waters, internal boiling waters, condensate waters, and return waters. The combination product preferably contains weight ratios of ingredients (a):(b):(c) ranging from 1:0.01:0.1 to about 1:1:100, and may additionally contain a filming amine.Type: GrantFiled: June 15, 1990Date of Patent: March 10, 1992Assignee: Nalco Chemical CompanyInventors: Cynthia A. Soderquist, Mei-Jan L. Lin
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Patent number: 5084210Abstract: A corrosion inhibitor including an acetylinic alcohol is disclosed which is used in connection with a chlorine dioxide process for controlling biomass and cleaning water injection wells and oil producing wells by injecting the chlorine dioxide oxidant into the pumped water injection stream.Type: GrantFiled: February 7, 1990Date of Patent: January 28, 1992Assignee: Chemlink IncorporatedInventor: Susan M. Teeters
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Patent number: 5022926Abstract: A method of removing iron contaminants in an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring and, further, a method of inhibiting calcium scale formation in the presence of iron contaminants by utilizing at least one dehydroxyaromatic compound in combination with calcium scale inhibitors.Type: GrantFiled: May 18, 1989Date of Patent: June 11, 1991Assignee: W. R. Grace & Co.-Conn.Inventors: Robert P. Kreh, Joseph T. Lundquist, Wayne L. Henry, John A. Kelly, Vincent R. Kuhn
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Patent number: 4935205Abstract: A method of inhibiting corrosion of iron or iron-based alloys which are in contact with an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring.Type: GrantFiled: June 10, 1988Date of Patent: June 19, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Robert P. Kreh, Joseph T. Lundquist, Wayne L. Henry
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Patent number: 4929364Abstract: An aqueous concentrate useful for treating boiler waters to scavenge oxygen therefrom which contains at least 0.3% by weight of either gallic acid or propyl gallate. This aqueous concentrate has a pH adjusted to at least 8.5 by a water-soluble neutralizing amine of the type used to treat boiler waters. Additionally, a method for treating boiler waters with an oxygen scavenger.Type: GrantFiled: November 4, 1988Date of Patent: May 29, 1990Assignee: Nalco Chemical CompanyInventors: Patricia A. Reardon, David A. Grattan
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Patent number: 4895703Abstract: A method for inhibiting corrosion due to dissolved oxygen wherein trihydroxybenzene compounds, alone or in combination with conventional oxygen scavengers, preferably hydroquinone, are added to boiler water to prevent corrosion by reducing dissolved oxygen levels in boiler feedwater.Type: GrantFiled: August 15, 1988Date of Patent: January 23, 1990Assignee: Calgon CorporationInventors: John D. Zupanovich, Lois J. Neil, Dennis J. Sepelak
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Patent number: 4888132Abstract: An aqueous rust inhibitor containing a soap of a hydroxyaryl fatty acid and an alkali metal. The inhibitor exhibits good rust inhibiting effects without emitting any malodor.Type: GrantFiled: May 25, 1988Date of Patent: December 19, 1989Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Hitoshi Kohashi, Nobuhiko Shizuka, Yoshihito Kadoma
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Patent number: 4882413Abstract: A novel class of polymers and processes used in their preparation are described. The polymers are produced by a reaction between polyfunctional amines and quinones. Some are infusible and intractable. Others are eminently suitable for the production of coatings, adhesives, insulators, etc. Some polymers, in solution in appropriate solvents adhere to metals, siliceous materials, composites with sufficient affinity to displace water. The polymers can be cured by heat or chemicals to an impervious and insoluble material that is not wetted by water.Type: GrantFiled: May 24, 1988Date of Patent: November 21, 1989Inventor: Semih Erhan
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Patent number: 4846985Abstract: A composition is disclosed which comprises:(A) a compound represented by the formula ##STR1## wherein Ar.sup.1 and Ar.sup.2 are independently mononuclear or polynuclear, substituted or unsubstituted aromatic groups; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or hydrocarbyl groups of from 1 to about 25 carbon atoms; X is at least one divalent sulfur atom, sulfone group, sulfixide group, or a mixture thereof; and n is a number ranging from 1 to about 5; and(B) a compound represented by the formula ##STR2## wherein Ar.sup.3 and Ar.sup.4 are independently mononuclear or polynuclear, substituted or unsubstituted aromatic groups; and R.sup.5 is hydrogen, halogen, OH, NH.sub.2, SH, NO.sub.2 or a hydrocarbyl group of from 1 to about 50 carbon atoms. Concentrates, lubricants, functional fluids, fuels, aqueous compositions and emulsions comprising the foregoing compositions are also disclosed.Type: GrantFiled: March 10, 1986Date of Patent: July 11, 1989Assignee: The Lubrizol CorporationInventors: S. Q. Abbas Rizvi, Charles P. Bryant, Kent B. Grover, James N. Vinci
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Patent number: 4830828Abstract: A method for inhibiting sulfide stress corrosion cracking and hydrogen induced stepwise cracking in a metal (e.g. pipeline steel) that comprises contacting the metal at a pH of 5.3 or below with an effective inhibiting amount of a glycolipid-containing product obtained from a fermentation using Torulopsis bombicola.Type: GrantFiled: September 21, 1987Date of Patent: May 16, 1989Assignee: Battelle Memorial InstituteInventors: Kevin W. Anderson, Henry J. Cialone
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Patent number: 4780278Abstract: A hydrocarbon-soluble corrosion inhibitor composition comprising the reaction product obtained by the acid-catalyzed oligomerization of an alkylaniline and formaldehyde, wherein the alkylaniline has from 4 to 30 carbon atoms in the alkyl substituent. Also disclosed is a method of inhibiting corrosion of a corrodible metal utilizing said composition.Type: GrantFiled: October 31, 1986Date of Patent: October 25, 1988Assignee: Chevron Research CompanyInventors: Robert Bacskai, Albert H. Schroeder
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Patent number: 4778654Abstract: A hydrocarbon-soluble corrosion inhibitor composition comprising the reaction product obtained by the acid-catalyzed oligomerization of alkylaniline, formaldehyde, and an aromatic compound selected from aniline, phenol, alkylphenol and an ethoxylated alkylphenol. Also disclosed is a method of inhibiting corrosion of a corrodible metal utilizing said composition.Type: GrantFiled: October 31, 1986Date of Patent: October 18, 1988Assignee: Chevron Research CompanyInventors: Robert Bacskai, Albert H. Schroeder
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Patent number: 4728578Abstract: The present invention relates to modified non-Newtonian colloidal disperse systems exhibiting improved thickening power, particularly when diluted. These compositions are useful as high-solids, thermosetting caulks, molding compositions, extruding compositions and the like, but are particularly suitable for use as high solids thermosetting coating compositions. These coating compositions are heat-stable and sag-resistant.The compositions of this invention comprise a mixture of(B) at least one non-Newtonian colloidal disperse system comprising(B-1) solid metal-containing colloidal particles,(B-2) a liquid dispersing medium, and(B-3) at least one organic compound which is soluble in said dispersing medium, the molecules of said organic compound being characterized by a hydrophobic portion and at least one polar substituent; and(C) at least one hydrogenated block copolymer of a vinyl aromatic monomer and an aliphatic conjugated diene.Type: GrantFiled: August 13, 1986Date of Patent: March 1, 1988Assignee: The Lubrizol CorporationInventors: William A. Higgins, John Bretz
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Patent number: 4680327Abstract: Stabilizers consisting of (a) 2,5,7,8-tetramethyl-2-(2'-stearyloxyethyl)-chroman and (b) glyceryl stearate, glyceryl hydroxystearate, partial esters of stearic acid with condensates of glycerol and trimethylolpropane, triglyceryl stearate and/or tetraglyceryl stearate, with or without further conventional additives, the weight ratio of (a) to (b) being from 10:1 to 1:10, give improved stabilization to discoloration and superior stability during processing when used in plastics such as polyethylene or polypropylene.Type: GrantFiled: January 29, 1986Date of Patent: July 14, 1987Assignee: BASF AktiengesellschaftInventors: Albert Hettche, Stefan Weiss, Hubert Trauth, Peter Lechtken, Michael Horner
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Patent number: 4626411Abstract: A composition containing a hydroxylamine compound; a quinone, a dihydroxybenzene, a diaminobenzene, or an aminohydroxybenzene compound; and a neutralizing amine is an excellent oxygen scavenger and corrosion inhibitor in boiler water and other aqueous systems.Type: GrantFiled: April 17, 1985Date of Patent: December 2, 1986Assignee: Dearborn Chemical Company, LimitedInventors: John J. Nemes, Harvey W. Thompson, John E. Waller
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Patent number: 4609377Abstract: A novel fuel composition contains ethanol or gasohol, and, as a wear-corrosion-inhibiting additive, an aminated polyisopropoxylated polyethoxylated alkylphenol ##STR1## wherein R is a (C.sub.5 -C.sub.30) alkyl, alkaryl, aralkyl, aryl, or cycloalkyl group, x is a numeral of about 5 to about 30, and y is a numeral of about 1 to about 20.Type: GrantFiled: October 7, 1985Date of Patent: September 2, 1986Assignee: Texaco Inc.Inventors: Rodney L. Sung, Wheeler C. Crawford
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Patent number: 4599462Abstract: Novel composites or solid solutions made from heretofore immiscible chemical components and methods for making such composites or solid solutions. A wall of a deposition cell is cooled to a temperature within the range of about -273.degree. C. to about -20.degree. C. A solid host component and one or more guest components are vaporized and codeposited onto the cold wall of the deposition cell so as to form a solid solution. The resultant solid solutions are stable at room temperature and often at much higher temperatures. The present invention also provides methods for modifying the surface structure of solid materials.Type: GrantFiled: May 25, 1983Date of Patent: July 8, 1986Assignee: University of UtahInventor: Josef Michl
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Patent number: 4569783Abstract: Compositions and methods for chemically scavenging oxygen from an aqueous medium are disclosed. Salicylaldehyde catalyzed by hydroquinone can be used as an oxygen scavenger in any aqueous medium, but is especially well adapted for use in boiler water systems.Type: GrantFiled: November 1, 1984Date of Patent: February 11, 1986Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4549968Abstract: Stable oxygen scavenger compositions adapted for storage without resulting in substantial sludge formation and oxygen scavenging methods of using the compositions are disclosed. The compositions comprise hydroquinone, a compatible amine termed a mu-amine, and a member selected from the group consisting of isoascorbic acid and ascorbic acid and water soluble salt forms thereof. Methods comprise adding from about 0.05-200 ppm hydroquinone, 0.001-400 ppm mu-amine, and about 0.00025-500 ppm of isoascorbic or ascorbic acid to the desired aqueous medium.Type: GrantFiled: May 18, 1984Date of Patent: October 29, 1985Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4541932Abstract: Compositions and methods for chemically scavenging oxygen from an aqueous medium are disclosed. Furfural catalyzed by hydroquinone can be used as an oxygen scavenger in any aqueous medium, but is especially well adapted for use in boiler water systems.Type: GrantFiled: November 9, 1984Date of Patent: September 17, 1985Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4532068Abstract: The method for improving the initial activity of activated hydrazine is used as corrosion protection for reservoir drinking water and for the wet preservation of installation parts no longer in use. It is the object of the invention to increase the initial activity of hydrazine solutions, activated with complexes of trivalent cobalt, with respect to oxygen dissolved in water, and to develop a suitable method for the activator-rich hydrazine solution. The object is accomplished in that trivalent phenols, preferably pyrogallol, are added in small amounts to the activator-rich hydrazine solution.Type: GrantFiled: March 10, 1983Date of Patent: July 30, 1985Assignee: VEB Leuna-Werke "Walter Ulbricht"Inventors: Wilfried Fuchs, Horst Richter, Vendelin Kaufmann, Christina Muller, Roland Kober, Wolfgang Renker
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Patent number: 4512909Abstract: Disclosed is an improved oxygen-scavenging and corrosion-inhibiting agent for fluidic systems comprising a hydroquinone compound with hydrazine (1:1 molar ratio). Also disclosed are methods for using this agent.Type: GrantFiled: June 30, 1982Date of Patent: April 23, 1985Assignee: Olin CorporationInventor: Henry W. Schiessl
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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: 4466902Abstract: A rust inhibitor comprising, as an effective component, at least one compound having the following general formulae (A), (B) and (C) ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrocarbon group having 1 to 6 carbon atoms, R.sub.3 and R.sub.4 are independently a hydrocarbon group having 1 to 4 carbon atoms or a hydrocarbon group containing an aromatic ring and having 6 to 12 carbon atoms, R.sub.5 and R.sub.6 are independently a hydrocarbon group having 1 to 18 carbon atoms, m and n are independently 0 or an integer of 1 to 3, R.sub.3 or R.sub.4 is hydrogen in the case of m or n is 0, X is O, S, SO.sub.2, CO or a hydrocarbon group having 1 to 9 ca toxicity and is easily applicable in either a water-soluble state or an oil-soluble state.Type: GrantFiled: September 30, 1982Date of Patent: August 21, 1984Assignee: Ipposha Oil Industries, Co., Ltd.Inventors: Shinichi Kumagae, Tatsuo Manabe
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Patent number: 4447477Abstract: In a method for the production of corrosion-inhibiting coatings on metallic surfaces, a mixture consisting of a phenol, low molecular condensation products of formaldehyde and ammonia or amines and a wetting agent, which is chemically reactive with the starting materials, is applied onto the surface to be coated and is cured under heat. The mixture is applied in the form of a solution, dispersion or powder.Type: GrantFiled: December 29, 1982Date of Patent: May 8, 1984Assignee: Battelle-Institut e.V.Inventors: Heinrich Deibig, Klaus Wollmann
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Patent number: 4364846Abstract: A method is provided for preventing haze formation in a carburetor detergent and corrosion inhibiting fuel additive which is prepared by reacting a mole of maleic anhydride with from about 2 to 4 moles of a mixture of N-alkyl propane diamines of a specific alkyl chain distribution in the presence of from about 0.5 to 5 weight percent based on the N-alkyl propane diamine mixture of a phenolic antioxidant.Type: GrantFiled: March 30, 1981Date of Patent: December 21, 1982Assignee: Texaco Inc.Inventor: Benjamin J. Kaufman
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Patent number: 4363734Abstract: An improved method for scavenging dissolved oxygen from alkaline waters which comprises using dihydroxy acetone catalyzed with at least 1 percent based on the weight of said dihydroxy acetone, of a catalyst from the group consisting of hydroquinone and a water-soluble compound of manganese.Type: GrantFiled: August 27, 1981Date of Patent: December 14, 1982Assignee: Nalco Chemical CompanyInventor: Manuel Slovinsky
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Patent number: 4321062Abstract: Hydrocarbyl-substituted phenylaspartates of N-primary-alkyl-alkylene diamines of the formulas: ##STR1## wherein R is a hydrocarbyl radical having from about 6 to 30 carbon atoms; R' is an alkyl or an alkenyl group having from 6 to 30 carbon atoms are provided together with a motor fuel composition containing at least one of the foregoing compounds.Type: GrantFiled: January 12, 1981Date of Patent: March 23, 1982Assignee: Texaco Inc.Inventors: Sheldon Herbstman, Peter Dorn
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Patent number: 4309293Abstract: Sulfurized phenols, e.g., phenol sulfides, disulfides or polysulfides, oligomers thereof or mixtures of same when treated with alkyl vinyl ethers provide excellent metal anti-corrosivity characteristics without significant reduction of antioxidant, antiwear or other desired properties when incorporated into organic media such as lubricants.Type: GrantFiled: December 10, 1979Date of Patent: January 5, 1982Assignee: Mobil Oil CorporationInventor: Milton Braid
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Patent number: 4282111Abstract: A method is disclosed for reducing the oxygen content of water using a hydrazine-free aqueous solution of hydroquinone.Type: GrantFiled: April 28, 1980Date of Patent: August 4, 1981Assignee: Betz Laboratories, Inc.Inventor: Stanley J. Ciuba
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Patent number: 4279767Abstract: An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine.Type: GrantFiled: July 14, 1980Date of Patent: July 21, 1981Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4278635Abstract: A method for boiler water treatment to retard corrosion due to dissolved oxygen. Hydroquinone and certain related compounds are highly effective oxygen scavengers for use in boiler water and thereby effect reduction of corrosion resulting from dissolved oxygen.Type: GrantFiled: December 26, 1979Date of Patent: July 14, 1981Assignee: Chemed CorporationInventor: Herman Kerst
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Patent number: 4278555Abstract: Lubricating oil formulated for use in an engine crankcase having improved anticorrosion property imparted by addition of a minor amount of the combination of (A) a block-oxyalkylated trimethylol alkane containing an initial hydrophobic block of propyleneoxy and optionally random ethyleneoxy units and a terminal hydrophilic block of ethyleneoxy and optionally random propyleneoxy units and (B) an oxyethylated alkylphenol.Type: GrantFiled: December 20, 1979Date of Patent: July 14, 1981Assignee: Ethyl CorporationInventors: Edward F. Zaweski, Christian S. Harstick
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Patent number: 4269717Abstract: A method of removing dissolved oxygen from boiler water which comprises adding to the water an oxygen scavenging amount of carbohydrazide.Type: GrantFiled: October 6, 1980Date of Patent: May 26, 1981Assignee: Nalco Chemical CompanyInventor: Manuel Slovinsky
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Patent number: 4263167Abstract: Poly(alkylene oxide) compositions are provided which exhibit excellent resistance to oxidative degradation and inhibit the corrosion of ferrous metals, which compositions have incorporated therein a small effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR1## wherein X is a chemically stable group selected from lower alkylene, sulfonyl, and amino groups, and a sulfur atom, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.Type: GrantFiled: June 29, 1979Date of Patent: April 21, 1981Assignee: Union Carbide CorporationInventor: Blake F. Mago
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Patent number: 4197091Abstract: A composition for inhibiting the corrosion of ferrous metal pipelines used to transport petroleum hydrocarbons comprising a major portion of a mixture of C.sub.36 dicarboxylic dimer acid and a C.sub.54 trimer acid, which mixture has an acid number of at least 110 and from 0.Type: GrantFiled: April 12, 1979Date of Patent: April 8, 1980Assignee: Nalco Chemical Co.Inventor: Alvis B. Gainer
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Patent number: 4169799Abstract: Lubricant oil comprising a hydrocarbon oil of lubricating viscosity, a highly overbased alkaline earth metal-containing alkylphenolate detergent-dispersant composition sufficient to impart a total base number to said lubricant oil of at least 10; and a chlorinated sulfurized alkylphenol.Type: GrantFiled: December 27, 1976Date of Patent: October 2, 1979Assignee: Texaco Inc.Inventors: Rodney L. Sung, Benjamin H. Zoleski
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Patent number: 4124500Abstract: A process is disclosed for eliminating oxygen dissolved in water wherein there is added to the water a hydrazine solution containing, as the activator, an amount of a compound of the formula: ##STR1## WHEREIN A = 0, 1 OR 2; B = 0, 1, 2 OR 3; C = 0, 1, 2 OR 3; B + C = 2 OR 3; AND A + B + C = 3, 4 OR 5, SUFFICIENT TO INCREASE THE RATE OR REMOVAL OF SUCH OXYGEN COMPARED TO THE RATE WHEN AN AQUEOUS HYDRAZINE SOLUTION, PER SE, IS USED.The use of aqueous solutions of hydrazine to eliminate oxygen dissolved in water, such as boiler or heater water, is known.Type: GrantFiled: June 20, 1977Date of Patent: November 7, 1978Assignee: Produits Chimiques Ugine KuhlmannInventors: Basile Arghiropoulos, Adrien P. N. Tignol
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Patent number: 4093557Abstract: A process for inhibiting corrosion of metals in contact with aqueous systems is provided by maintaining in contact with metals a corrosion inhibiting composition that contains a compound containing the quinomethide group represented as follows: ##STR1##Type: GrantFiled: September 16, 1976Date of Patent: June 6, 1978Assignee: Hercules IncorporatedInventor: David C. Zecher
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Patent number: 4079018Abstract: Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex, and, preferably, a quinone compound. The organometallic complex is the reaction product of a cobaltous or manganous hydroxide and one or more organic ligands selected from the group consisting of unsubstituted and substituted amino derivatives of carboxylic acids and salts thereof. The quinone compound is preferably added to these compositions in order to render them compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.Type: GrantFiled: January 27, 1977Date of Patent: March 14, 1978Assignee: Olin CorporationInventor: Manfred G. Noack
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Patent number: 4071327Abstract: 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 an alkylphenol in which the alkyl group contains at least about six carbon atoms; formaldehyde or a reversible polymer thereof; and a hydroxyalkyl-substituted amine such as diethanolamine. The acid portion of the salt is preferably derived from a carboxylic acid containing about 14-24 carbon atoms especially an aliphatic radical-substituted succinic acid or an acidic ester thereof. Epoxide adducts of such salts are useful for the same purposes.Type: GrantFiled: March 21, 1975Date of Patent: January 31, 1978Assignee: The Lubrizol CorporationInventor: Casper John Dorer, Jr.
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Patent number: 4053428Abstract: Hydroxy aromatic compositions containing (a) a hydroxyl group bonded directly to a carbon of an aromatic nucleus, (b) a hydrocarbon-based substituent of at least about 50 aliphatic carbon atoms bonded directly to a carbon atom of an aromatic nucleus, (c) at least one methylol or lower hydrocarbyl substituted methylol substituent bonded directly to a carbon atom of an aromatic nucleus, and not having any alkylene linkages between carbon atoms of two aromatic nuclei are useful as additives for normally liquid fuels and lubricating oils. These hydroxy aromatic compositions are also useful as intermediates for preparing other additives for fuels and lubricants. Typical hydroxy aromatic compositions of the present invention are formed by reaction of formaldehyde with an alkenyl- or alkyl-substituted phenol wherein the alkyl or alkenyl substituent contains an average of about 50 carbon atoms.Type: GrantFiled: September 15, 1975Date of Patent: October 11, 1977Assignee: The Lubrizol CorporationInventors: John Francis Pindar, Jerome Martin Cohen, Charles Peterson Bryant
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Patent number: 4028117Abstract: A corrosion inhibitor, particularly suitable for use in pipelines used for the transportation of hydrocarbon fluids such as crude petroleum or refined petroleum fractions, comprises a mixture of (a) from 1.8 to 25 parts by weight dimerised unsaturated fatty acid and (b) 1 part by weight of an alkoxylated alkyl phenol and provides a WSIM number (as defined) of at least 60.Type: GrantFiled: May 29, 1975Date of Patent: June 7, 1977Assignee: Edwin Cooper & Company LimitedInventor: Nicholas Warrington Moat
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Patent number: 4022711Abstract: Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and a quinone compound. The organometallic complex is the reaction product of a cobaltous, manganous, or cupric inorganic salt and one or more ligands comprising amino derivatives of carboxylic acids or salts. The quinone compound is one which renders the composition compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.Type: GrantFiled: February 24, 1976Date of Patent: May 10, 1977Assignee: Olin CorporationInventor: Manfred G. Noack
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Patent number: 4022712Abstract: Corrosion inhibiting compositions are described which contain a hydrazine compound and an organometallic complex. The organometallic complex is the reaction product of a cobaltous, manganous, or cupric inorganic salt and one or more ligands comprising amino derivatives of carboxylic acids or salts. The use of these compositions as oxygen scavengers in corrosive environments is also described.Type: GrantFiled: February 24, 1976Date of Patent: May 10, 1977Assignee: Olin CorporationInventor: Manfred G. Noack
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Patent number: 4014814Abstract: A composition for use as corrosion inhibitor in circulating water streams includes a linear water-soluble, phenol-aldehyde resinous condensation product and a polyphospate, such as an alkali metal polyphosphate or a phosphorylated polyol.Type: GrantFiled: July 30, 1975Date of Patent: March 29, 1977Assignee: Hercules IncorporatedInventor: David C. Zecher
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Patent number: 3965050Abstract: Improved process for preparing a cross-linked epichlorohydrin elastomer composition by heating an epichlorohydrin elastomer in the presence of a compound selected from the group consisting of the quinones and derivatives thereof of the following formula ##SPC1##Wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, are each a member selected from the class consisting of hydrogen and the hydrocarbon groups, and R.sub.1 and R.sub.2 taken together, may form a benzene ring.Type: GrantFiled: June 3, 1974Date of Patent: June 22, 1976Assignee: Osaka Soda Co., Ltd.Inventors: Sachio Shimogawa, Takashi Fujio, Mikio Arika, Nobuo Yamada, Takashi Kodama, Tetsuya Nakata
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Patent number: 3963472Abstract: A soluble chromate or dichromate is incorporated in a system comprising a metal and an orthophosphate-containing liquid to inhibit corrosion of the system under highly turbulent conditions. The system in which the chromate or dichromate is incorporated is a system in which the metal surface is normally passivated against corrosion by an orthophosphate-containing film; however under the erosive conditions experienced by the system, the phosphate film is destroyed. The incorporation of the chromate or dichromate in the system prevents corrosion under such conditions. In a typical system, a chromate or dichromate is incorporated in an ammonium phosphate solution which is exposed to contact with a ferrous metal.Type: GrantFiled: June 27, 1969Date of Patent: June 15, 1976Assignee: Union Oil Company of CaliforniaInventor: Donald C. Young
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Patent number: 3960758Abstract: A non-discoloring stabilizer system for trans-polypentenamer of:A. a sulphur-containing phenol of the formula: ##SPC1##In which R.sub.1 and R.sub.3 are alkyl groups with 1 to 8 carbon atoms, aralkyl radicals with 7 to 9 carbon atoms and cycloalkyl radicals with 5 to 7 carbon atoms, R.sub.3 represents hydrogen, alkyl groups with 1 to 8 carbon atoms, cyclohexyl, cyclohexenyl or methylcyclohexenyl, R.sub.4 represents alkyl groups with 1 to 12 carbon atoms or ##SPC2##Where R.sub.1, R.sub.2 and R.sub.3 are as defined above, andB. a phenol ester of phosphorous acid of the formula: ##SPC3##In which R.sub.5 represents an alkyl or cycloalkyl group with 5 to 10 carbon atoms, R.sub.6 and R.sub.7 are the same or different and represent hydrogen, alkyl and cycloalkyl radicals each with 1 to 7 carbon atoms.Type: GrantFiled: June 28, 1974Date of Patent: June 1, 1976Assignee: Bayer AktiengesellschaftInventors: Josef Witte, Dieter Theisen, Ernst Roos, Karl Nutzel