Amine, Amide, Azo, Or Nitrogen-base Radical Containing Patents (Class 252/390)
  • Patent number: 10519116
    Abstract: Disclosed are nitrogen-containing heterocyclic compounds of relatively low aquatic toxicity and methods of using the heterocyclic compounds as corrosion inhibitors. The present method is used to inhibit corrosion of a metal surface in contact with an aqueous system using pyrazole derivatives, and provides enhanced protection against corrosion of metals in aqueous systems. The method comprises the use of corrosion inhibitors that are generally resistant to halogen attack and provide good corrosion resistance in the presence of oxidizing halogen-based biocides. Formulations comprising pyrazole derivatives are also disclosed.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: December 31, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Anand Harbindu, Jothibasu Seetharaman, Jeffery M. Atkins, Deepak Rane, Vaideeswaran Sivaswamy
  • Patent number: 10351509
    Abstract: Methods of preparing a fenfluramine active pharmaceutical ingredient are provided. Aspects of the method include (a) hydrolyzing a 2-(3-(trifluoromethyl)phenyl)acetonitrile composition to produce a 2-(3-(trifluoromethyl)phenyl)acetic acid composition; (b) reacting the 2-(3-(trifluoromethyl)phenyl)acetic acid composition with acetic anhydride and a catalyst to produce a 1-(3-(trifluoromethyl)phenyl)propan-2-one composition; and (c) reductively aminating the 1-(3-(trifluoromethyl)phenyl)propan-2-one composition with ethylamine using a borohydride reducing agent to produce a fenfluramine composition. Also provided are compositions and pharmaceutical ingredients prepared according to the subject methods including a pharmaceutically acceptable salt of fenfluramine and having less than 0.2% by weight in total of trifluoromethyl regioisomers.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 16, 2019
    Assignee: ZOGENIX INTERNATIONAL LIMITED
    Inventors: Derek J. Londesbrough, Marc W. Andersen
  • Patent number: 10351510
    Abstract: Methods of preparing a fenfluramine active pharmaceutical ingredient are provided. Aspects of the method include (a) hydrolyzing a 2-(3-(trifluoromethyl)phenyl)acetonitrile composition to produce a 2-(3-(trifluoromethyl)phenyl)acetic acid composition; (b) reacting the 2-(3-(trifluoromethyl)phenyl)acetic acid composition with acetic anhydride and a catalyst to produce a 1-(3-(trifluoromethyl)phenyl)propan-2-one composition; and (c) reductively aminating the 1-(3-(trifluoromethyl)phenyl)propan-2-one composition with ethylamine using a borohydride reducing agent to produce a fenfluramine composition. Also provided are compositions and pharmaceutical ingredients prepared according to the subject methods including a pharmaceutically acceptable salt of fenfluramine and having less than 0.2% by weight in total of trifluoromethyl regioisomers.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 16, 2019
    Assignee: ZOGENIX INTERNATIONAL LIMITED
    Inventors: Derek J. Londesbrough, Marc W. Andersen
  • Patent number: 10301454
    Abstract: This invention provides a water-based elastomeric composition free from aromatics or similar solvents comprising: an elastomer, a thickener, titanium dioxide, an antioxidant, a fungicide, water and optionally a coloring agent. The composition further comprises a corrosion inhibitor and may be impregnated to a textile material, preferably a fiber glass textile.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 28, 2019
    Inventor: Juan Antonio Mayer Goyenechea Caballero
  • Patent number: 10100420
    Abstract: The presently claimed invention provides a plating additive for electrodeposition, and the corresponding fabrication method thereof. The plating additive of the present invention enables to electroplate holes on a substrate with good height uniformity within a feature and among features at different diameters.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: October 16, 2018
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limtied
    Inventors: Yaofeng Sun, Minjie Xu, Shun Yee Lao, Shu Kin Yau
  • Patent number: 9912096
    Abstract: A terminated electric wire includes an electric wire that includes a core wire including a metal having an ionization tendency larger than that of copper and being exposed from an end portion of the electric wire, and a terminal that includes copper or a copper alloy and is connected to the exposed core wire. A surface treating layer includes a surface treating agent that is in liquid form or in paste form and whose molecular structure contains an affinity group having an affinity for the terminal and a hydrophobic group having hydrophobicity, and is formed on a surface of the terminal. As a result, the electrolytic corrosion resistance of the terminated electric wire is improved.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: March 6, 2018
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY
    Inventors: Hideki Nomura, Hiroki Hirai, Junichi Ono, Takuji Ootsuka, Takehiro Hosokawa, Tatsuya Hase, Kazuhiro Goto, Kazuo Nakashima, Makoto Mizoguchi
  • Patent number: 9850421
    Abstract: The present disclosure includes a nonionic surfactant and a method of providing the nonionic surfactant, where the nonionic surfactant is soluble in carbon dioxide and is used as part of a dispersion for enhanced crude oil recovery. The nonionic surfactant can be part of an emulsion that includes carbon dioxide and a diluent.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: December 26, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Sayeed Abbas, Aaron W. Sanders, Debashis Chakraborty
  • Patent number: 9752236
    Abstract: The present invention provides the use of a sulfosuccinate as a corrosion inhibitor. In particular, the sulfosuccinate may be used to inhibit the corrosion of a metal component that is, or will be, in contact with an aqueous fluid, in order to prevent or reduce corrosion of the metal component. The sulfosuccinate may be used to inhibit corrosion of a metal component in an industrial aqueous system, such as a hydrocarbon plant; a chemical plant; a water plant; or a paper manufacturing plant, and in particular in an oilfield system or a downstream oil-related system.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: September 5, 2017
    Assignee: Rhodia Operations
    Inventors: Alan Fellows, Kevan Hatchman, Chris Jones
  • Patent number: 9673341
    Abstract: A method for use in forming a photovoltaic device includes forming a doped semiconductor layer on a surface of a semiconductor substrate and forming a metal film on the doped semiconductor layer. A patterned etched resist is formed on the metal film and a dielectric layer is formed on the doped semiconductor layer and the etched resist. A laser having a wavelength absorbable by the patterned etch resist is applied through the dielectric layer to the patterned etch resist to remove the patterned etch resist.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 6, 2017
    Assignee: TETRASUN, INC.
    Inventors: Adrian Bruce Turner, Bonneville Dudgeon Eggleston, Oliver Schultz-Wittmann, Douglas Edward Crafts
  • Patent number: 9638018
    Abstract: Alpha-hydroxy alkyl esters have been found to perform as hydrogen sulfide scavengers. A method of scavenging hydrogen sulfide includes contacting a fluid containing hydrogen sulfide with a treatment fluid including an alpha-hydroxy alkyl ester. Accordingly, the alpha-hydroxy alkyl ester reacts with the hydrogen sulfide to reduce the amount of hydrogen sulfide in the fluid. A broad range of alpha-hydroxy alkyl esters are disclosed.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: May 2, 2017
    Assignee: Ecolab USA Inc.
    Inventors: Aaron D. Martinez, Ravindranath Mukkamala, Erick J. Acosta Otero, Joseph P. Bailey
  • Patent number: 9512380
    Abstract: This invention relates to a novel hindered phenol compound of Formula (I) (wherein the groups R and R? are as defined in the specification), preparation thereof and use thereof as an antioxidant. By using the hindered phenol compound of this invention as an antioxidant, it is possible to produce a lubricant oil composition exhibiting excellent oxidation resistance at elevated temperatures.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: December 6, 2016
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Shuo Su, Jun Long, Qinghua Duan, Han Zhou, Zhiqiang Wu, Xinhua Li, Yi Zhao, Xiaoguang Zhao
  • Patent number: 9447322
    Abstract: A composition with one or more tetrahydrobenzotriazoles and one or more one or more tetrahydrobenzotriazole activating solvents, wherein the tetrahydrobenzotriazoles are solubilized in the activating solvents in an amount effective to inhibit corrosion of a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents. Also, a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: September 20, 2016
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James E. Milawski
  • Patent number: 9321976
    Abstract: A fuel composition and method for reducing friction or wear and improving fuel economy in an engine. The fuel composition includes gasoline and from about 10 to about 750 ppm by weight based on a total weight of the fuel composition of a hydroxyalkyl hydrocarbyl-substituted succinimide compound having at least two hydroxyl groups attached to a tertiary nitrogen atom of a polyamino group through a hydrocarbyl link, wherein the hydroxyalkyl hydrocarbyl-substituted succinimide is devoid of primary and secondary amino groups.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 26, 2016
    Assignee: Afton Chemical Corporation
    Inventors: Xinggao Fang, Scott A. Culley, Scott D. Schwab
  • Publication number: 20150118104
    Abstract: Compounds and compositions are used as corrosion inhibitors for pipelines for crude oil containing water with high salt concentrations. The inhibitors are ionic liquids, imidazoles, benzotriazoles, and mixtures thereof. The composition includes two or more members of the inhibitors with a solvent. The inhibitors reduce corrosion of metallic surfaces of the pipelines containing crude oil having 0.2 and 40 wt % water, 10,000 to 70,000 ppm salt, and 9 to 600 ppm hydrogen sulfide. A synergic effect is provided by two or more different inhibitors. This synergy is derived from interactions with the metallic surface, among themselves or with the corrosive medium depending on the chain length, to inhibit the corrosion with decrease of the formulation dose. The composition can be a ternary formulation of the three families or two components of one family and a third component of a different family.
    Type: Application
    Filed: October 28, 2014
    Publication date: April 30, 2015
    Inventors: Jesus MARIN CRUZ, Araceli VEGA PAZ, Luisa Elena MONTIEL SANCHEZ, Salvador CASTILLO CERVANTES, Rafael MARTINEZ PALOU, Arquimedes ESTRADA MARTINEZ, Luis Manuel QUEJ AKE, Jose Luis Rodolfo BENITEZ AGUILAR, Veronica SANCHEZ GARCIA
  • Patent number: 8906267
    Abstract: The invention relates to substance combinations comprising (1) at least one substituted, preferably polysubstituted, pyrimidine, (2) at least one monoalkylurea, (3) at least one C3 to C5 aminoalkyldiol, and optionally (4) at least one benzotriazole, preferably a benzotriazole which is substituted on the benzene ring. The components may be mixed together or dispersed in water or pre-mixed in a solubiliser that is miscible in any ratio with mineral oils and synthetic oils, such as for example a phenyl alkyl alcohol or an alkylated phenol. Such substance combinations can be used as vapour phase corrosion inhibitors in packagings or during storage in closed spaces for protecting customary utility metals, such as iron, chromium, nickel, tin, zinc, aluminium, copper and alloys thereof, against atmospheric corrosion.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Excor Korrosionsforschung GmbH
    Inventors: Georg Reinhard, Peter Neitzel, Gerhard Hahn
  • Patent number: 8883916
    Abstract: Disclosed is cross-linking process for cross-linking polymeric chains in a coating composition. In one embodiment the process utilizes a Hantzsch dihydropyridine reaction to form reaction products including cross-linking polymeric resin chains having beta-keto ester functions using a source of aldehyde and a source of ammonia or a primary amine to form a permanent dihydropyridine bond between the beta-keto ester functions. The novel cross-linking reaction can occur at lower temperatures compared to typical cross-linking reactions and can occur in aqueous solutions that have a neutral to mildly alkaline pH of from 6 to 11. The novel cross-linking reaction provides many advantages to performing cross-linking of polymeric chains in coating resins.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: November 11, 2014
    Assignee: Henkel AG & Co. KGaA
    Inventors: Thomas S. Smith, II, Brian D. Bammel
  • Publication number: 20140315004
    Abstract: Corrosion inhibition systems, including coated substrates, coating materials and corrosion inhibition compounds, and methods of making the same are disclosed. These systems and methods include corrosion inhibition compounds that are responsive to corrosion at a surface, releasing active inhibitor groups upon a corrosion stimulus. The active inhibitor groups are selected to block corrosion at the surface by inhibiting oxidation reactions, reduction reactions and/or by forming a passivation layer.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 23, 2014
    Applicant: The Boeing Company
    Inventor: The Boeing Company
  • Patent number: 8828273
    Abstract: Disclosed is a concentrated cooling water additive that is substantially non-corrosive within a pH range of 2-12 and contains polymeric dispersant(s) and aromatic azole(s) that exhibits improved stability, possibly as a result of the interaction of the hydrophobic groups in the dispersant polymer and the aromatic azole(s). This improved stability allows for both reduced corrosivity of the formula and reduced manufacturing costs. Benefits of the disclosed formulations include improved safety for handling and shipment, more concentrated formulations available in liquid form, reduced shipping costs and storage space, reduced heat of neutralization during product manufacture, reduced costs of manufacture due to removal of need for caustic or acid addition and reduced environmental compliance costs associated with washing and waste handling step.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 9, 2014
    Assignee: Chemtreat, Inc.
    Inventors: John Richardson, Dale P. Stuart
  • Patent number: 8765020
    Abstract: Mitigating or preventing corrosion of metal may be achieved in systems that are alkaline, such as carbon dioxide capture systems. The method may include adding an additive to a system wherein the system is at an alkaline pH; the system has both O2 and CO2 present; or the system is at an alkaline pH and has both O2 and CO2 present. The additive may be selected from the group consisting of: quaternary aromatic amines; quaternary alkyl substituted aromatic amines; and combinations thereof. The corrosion inhibiting properties of the additives may be increased by use of synergistic combinants. The abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: July 1, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Ksenija Babić-Samard{hacek over (z)}ija, Lawrence N. Kremer, David J. Poelker, Vladimir Jovancicevic, Sunder Ramachandran
  • Patent number: 8734635
    Abstract: Elimination and/or mitigation of fouling in a vapor transport systems, such as vent lines and scrubber feed lines may be accomplished using an antifouling additive. The method for employing the antifouling additive includes introducing into the vapor transport system an additive including a polar solvent and corrosion inhibitor wherein: the vapor transport system is substantially water free; the vapor transport system is used to transport acidic materials; the additive is a liquid at vapor transport system operating conditions; and the additive is stable at the vapor transport system operating conditions.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 27, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Roger D. Metzler, Zhenning Gu, Bradley Harrell
  • Patent number: 8728392
    Abstract: The method of using an amine compound represented by the formula NH2—(CH2)m—O—(CH2)n—OH, where each of m and n is an integer of 1 to 3, as a boiler anti-corrosive.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: May 20, 2014
    Assignee: Kurita Water Industries Ltd.
    Inventors: Shintarou Mori, Yukimasa Shimura
  • Publication number: 20140091261
    Abstract: Working material for absorption machines using ammonia (NH3) or methylamine (CH3NH2) or dimethylamine ((CH3)2NH) as the working agent and using water (H2O) as the solvent, to which a small amount of basic water glass is added, i.e., a certain mixture of water glass and bases, which does not contain any chromium salts as corrosion inhibitors.
    Type: Application
    Filed: September 13, 2013
    Publication date: April 3, 2014
    Applicant: THETFORD CORPORATION
    Inventor: Jürgen KELLER
  • Publication number: 20130327992
    Abstract: The disclosed invention relates to corrosion resistant additive composition comprising an aniline oligomer and a catalyst. The invention also relates to a coating composition comprising the foregoing corrosion resistant additive composition and a resin that is reactive with the aniline oligomer, the catalyst being present at an effective concentration to effect room temperature cure of the coating composition.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 12, 2013
    Applicant: CBI POLYMERS, INC.
    Inventors: Garry J. Edgington, Andreas Mylonakis
  • Patent number: 8585964
    Abstract: This invention provides a novel, synergistic composition and method for reducing corrosion, particularly white rust corrosion, on galvanized metal surfaces in industrial water systems. The composition is a synergistic blend and preferably comprises from about 0 to about 10 weight percent of an amine-based white rust corrosion reducer and from about 10 to about 90 weight percent of a benzotriazole. In a method for using the synergistic blend, an effective amount of the blend is introduced onto the galvanized metal surface to form a barrier on the surface. After one or more time intervals, the composition is optionally overlayed onto the initial barrier by reintroducing an effective amount of the composition onto the galvanized metal surface.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: November 19, 2013
    Assignee: Nalco Company
    Inventors: Kaveh Sotoudeh, Sherman J. Sprague, Frank Fun-Yuee Lu, Tom Kim
  • Patent number: 8580154
    Abstract: Disclosed are quaternary ammonium salts containing non-halogen anions such as carbonates, bicarbonates, phosphates, glycolates and mixtures thereof as conversion coatings or additives imparting anti-corrosive properties to paints. The invention relates to a method for inhibiting the corrosion of metal surfaces by applying a composition containing one or more quaternary ammonium carbonate or bicarbonate. The disclosure is also directed to anti-corrosive coatings for metal substrates containing these compounds and to metal substrates having these anticorrosive coatings.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: November 12, 2013
    Assignee: Lonza, Inc.
    Inventors: Thomas C. Bedard, Thomas David Burleigh, Larry K. Hall, Joseph Kimler, Joseph W. Scheblein, Michael Y. Chiang
  • Patent number: 8535569
    Abstract: A composition with a corrosion inhibitor component having one or more tetrahydrobenzotriazoles and one or more other triazoles; wherein the tetrahydrobenzotriazoles are in a weight ratio to the other triazoles such that the composition decreases the General Corrosion rate, as measured by copper electrodes in the presence of 10 ppm sodium hypochlorite, by at least about 0.05 mpy relative to a corrosion inhibitor component which is 100% of the other triazoles. Also, a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: September 17, 2013
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James N. Milawski
  • Patent number: 8535567
    Abstract: A composition with one or more tetrahydrobenzotriazoles and one or more one or more tetrahydrobenzotriazole activating solvents, wherein the tetrahydrobenzotriazoles are solubilized in the activating solvents in an amount effective to inhibit corrosion of a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents. Also, a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: September 17, 2013
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James N. Milawski
  • Patent number: 8535568
    Abstract: A composition with one or more tetrahydrobenzotriazoles and one or more one or more tetrahydrobenzotriazole activating solvents, wherein the tetrahydrobenzotriazoles are solubilized in the activating solvents in an amount effective to inhibit corrosion of a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents. Also, a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: September 17, 2013
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James N. Milawski
  • Patent number: 8470238
    Abstract: Compositions and methods of using such compositions for reducing copper ion discharge from aqueous systems is disclosed and claimed. The composition includes a synergistic combination of at least two different benzotriazoles or salts thereof that effectively provides an erosion-resistant barrier on copper-containing surfaces of industrial systems.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: June 25, 2013
    Assignee: Nalco Company
    Inventors: Kaveh Sotoudeh, Michael A. Kamrath, Jasbir S. Gill
  • Patent number: 8465640
    Abstract: Elimination and/or mitigation of fouling in a vapor transport systems, such as vent lines and scrubber feed lines may be accomplished using an antifouling additive. The method for employing the antifouling additive includes introducing into the vapor transport system an additive including a polar solvent and corrosion inhibitor wherein: the vapor transport system is substantially water free; the vapor transport system is used to transport acidic materials; the additive is a liquid at vapor transport system operating conditions; and the additive is stable at the vapor transport system operating conditions.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: June 18, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Roger D. Metzler, Zhenning Gu, Bradley Harrell
  • Publication number: 20130142977
    Abstract: The present invention includes compositions and methods of supplying a corrosion inhibitor including placing a corrosion inhibitor attached to a nanostructure carrier, placing the nanostructure carrier containing the corrosion inhibitor at a location and the nanostructure carrier is capable of releasing the corrosion inhibitor.
    Type: Application
    Filed: January 28, 2013
    Publication date: June 6, 2013
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventor: NATIONAL OILWELL VARCO, L.P.
  • Publication number: 20130123147
    Abstract: Polymers are described that are polymerized from at least one reactive vinyl monomer having acid functionality or a salt thereof, and at least one reactive vinyl monomer having amide functionality. These polymers have a molecular weight from about 500 Da to about 15,000 Da; and may additionally comprise one or more solvent adducts. These polymers may be included in compositions that find use in oilfield applications, such as for inhibition and/or prevention of gas hydrates and/or corrosion.
    Type: Application
    Filed: April 13, 2011
    Publication date: May 16, 2013
    Applicant: ISP INVESTMENTS INC.
    Inventors: Osama M. Musa, Cuiyue C. Lei
  • Publication number: 20130055629
    Abstract: Compositions and methods for reducing stress corrosion cracking in steel vessels used for storing and/or transporting ethanol-containing fluids. Additives including oxygen scavengers and film-forming additives can be employed together in such ethanol-containing fluids (e.g., fuel grade ethanol) to mitigate stress corrosion cracking in steel vessels, such as pipelines, storage tanks, rail cars, and/or tanker trucks.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 7, 2013
    Applicant: MIDCONTINENTAL CHEMICAL COMPANY, INC.
    Inventor: Philip S. Korosec
  • Patent number: 8372336
    Abstract: The present invention relates to the use of a product obtainable by the reaction of an alkoxylated fatty amine with a dicarboxyhc acid derivative, followed by partial or total quaternization of the reaction product obtained; or by reacting a product with a dicarboxylic acid derivative, followed by partial or total quaternization of the reaction product obtained. The product consists of >60% w/w of oligomers/polymers with at least two alkoxylated amine units and one or more diacid/acid anhydride unit or >50% w/w of oligomers/polymers with at least two alkoxylated amine units and two or more diacid/acid anhydride units; as a corrosion inhibitor for metal surfaces. The invention also relates to a method for protecting a metal surface from corrosion by contacting the metal surface with said corrosion inhibitor.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: February 12, 2013
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Per-Erik Hellberg, Natalija Gorochovceva
  • Publication number: 20130017612
    Abstract: Methods to produce pH-sensitive microparticles that have an active agent dispersed in a polymer matrix have certain advantages over microcapsules with an active agent encapsulated in an interior compartment/core inside of a polymer wall. The current invention relates to pH-sensitive microparticles that have a corrosion-detecting or corrosion-inhibiting active agent or active agents dispersed within a polymer matrix of the microparticles. The pH-sensitive microparticles can be used in various coating compositions on metal objects for corrosion detecting and/or inhibiting.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 17, 2013
    Applicant: United States of America as Represented by the Administrator of the National Aeronautics and Spac
    Inventors: Wenyan LI, Jerry W. BUHROW, Scott T. JOLLEY, Luz M. CALLE
  • Patent number: 8349215
    Abstract: The invention relates to the use of salts of compound of the formula (1) and amines of the formula (2), where R1 means C8- to C30-Alkyl or C8- to C30-Alkenyl, R2 means hydrogen or a group of the formula -(A-O)x—H, R3, R4 mean hydrogen, C1- to C4-Alkyl or a group of the formula -(A-O)x—H, A means C2- to C4-Alkylene, and x means a number from 1 to 10, as water-soluble or water-dispersible corrosion inhibitors.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: January 8, 2013
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Dirk Leinweber, Alexander Roesch, Michael Feustel
  • Patent number: 8337640
    Abstract: Disclosed are quaternary ammonium salts containing non-halogen anions such as carbonates, bicarbonates, phosphates, glycolates and mixtures thereof as conversion coatings or additives imparting anti-corrosive properties to paints. The invention relates to a method for inhibiting the corrosion of metal surfaces by applying a composition containing one or more quaternary ammonium carbonate or bicarbonate. The disclosure is also directed to anti-corrosive coatings for metal substrates containing these compounds and to metal substrates having these anticorrosive coatings.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: December 25, 2012
    Assignee: Lonza, Inc.
    Inventors: Thomas C. Bedard, Thomas David Burleigh, Larry K. Hall, Joseph Kimler, Joseph W. Scheblein, Michael Y. Chiang
  • Patent number: 8303850
    Abstract: A rust preventive oil composition includes at least one base oil selected from the group consisting of mineral oils and synthetic oils, having a 5%-distillation temperature of not less than 140° C. and not more than 250° C., a 95%-distillation temperature of 250° C. or less, a difference between the 5%-distillation temperature and the 95%-distillation temperature of 90° C. or less, an aromatic content of 5% by volume or less, a naphthene content of not less than 30% by volume and not more than 95% by volume, a density at 15° C. of 0.75 g/cm3 or more, and a kinematic viscosity at 40° C. of not less than 0.3 mm2/s and not more than 5.0 mm2/s; at least one base oil selected from the group consisting of mineral oils and synthetic oils; and a rust-preventing additive.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: November 6, 2012
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Junichi Shibata, Tadaaki Motoyama, Kazuhiko Endou
  • Publication number: 20120248378
    Abstract: Compositions comprising substituted phenylenediamine and substituted triazine compounds, including tris-(N-alkyl-p-phenylenediamino)-1,3,5-triazines. The compositions are liquid and do not sinter during storage or transportation. The compositions are used as antiozonants for elastomer articles, including rubber articles.
    Type: Application
    Filed: June 13, 2012
    Publication date: October 4, 2012
    Inventors: Joseph F. Stieber, Venratramanan K. Madabusi, Edward L. Wheeler
  • Patent number: 8241524
    Abstract: Disclosed is a release on demand type corrosion inhibitor composition for a metal substrate formed from only non-electrically conductive film forming copolymer(s); a nitrogen containing functional group X, where the group X comprises a pyridine, a dihydropyridine, a pyrrole, an imidazole, or a mixtures thereof; and a metallate anion. The metallate anion binds to a nitrogen in the functional group X by ion pairing. A localized rise in pH is believed to cause release of the anion via a protonation/deprotonation reaction and the released anion suppresses the corrosion formation. The coating composition includes no electrically conductive polymers.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: August 14, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: John D. McGee, Thomas S. Smith, II, Brian D. Bammel, Todd R. Bryden
  • Patent number: 8236205
    Abstract: A composition with a corrosion inhibitor component having one or more tetrahydrobenzotriazoles and one or more other triazoles; wherein the tetrahydrobenzotriazoles are in a weight ratio to the other triazoles such that the composition decreases the General Corrosion rate, as measured by copper electrodes in the presence of 10 ppm sodium hypochlorite, by at least about 0.05 mpy relative to a corrosion inhibitor component which is 100% of the other triazoles. Also, a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 7, 2012
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James E. Milawski
  • Patent number: 8236204
    Abstract: A composition with one or more tetrahydrobenzotriazoles and one or more one or more tetrahydrobenzotriazole activating solvents, wherein the tetrahydrobenzotriazoles are solubilized in the activating solvents in an amount effective to inhibit corrosion of a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents. Also a method of using this composition to inhibit corrosion of a metal component which has a metal or metal alloy which is corrodible in the presence of copper or copper corroding agents.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 7, 2012
    Assignee: Wincom, Inc.
    Inventors: William N. Matulewicz, Peter F. Vogt, James E. Milawski
  • Patent number: 8222455
    Abstract: Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In one aspect, the present technology provides polycationic quaternary ammonium compounds that comprise bis-quaternary compound. The bis-quaternary compounds of the present technology can be symmetric or dissymmetric. In another aspect, the present technology provides viscoelastic well bore treatment fluids comprising water, and at least one polycationic quaternary ammonium compound that comprises a bis-quaternary compound. In another aspect, the present technology provides polycationic carboxylates. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or 110° C.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 17, 2012
    Assignee: Stepan Company
    Inventor: Paul Knox
  • Patent number: 8202449
    Abstract: A fire-retardant composition comprising an ammonium polyphosphate, a suspending agent and an effective amount of a corrosion inhibiting agent. When in solution the corrosion inhibiting agent includes at least one ion selected from the group of ions consisting of aluminum ions, ferric ions, calcium ions and magnesium ions. Said ions complex an effective amount of fluoride ions present in the fire-retardant composition to reduce the corrosiveness of the fire-retardant composition.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: June 19, 2012
    Assignee: ICL Performance Products, LP
    Inventors: Andrew Garner, Neville James Stead
  • Patent number: 8187499
    Abstract: The invention is related to a composition destined to protect steels against corrosion by utilization of the steel's own rust as a passivating element, the rust being removed from the steel and/or being synthetically prepared and agglutinated with a resin, where the resin can have or cannot have as an electric conductivity promoter material an intrinsically conductor polymer (ICP), in this case polyaniline, in its conducting form (emeraldine salt) or non conducting (emeraldine base), besides filler(s) and a dispersant oil.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: May 29, 2012
    Assignees: IPQM-Instituto de Pesquisas da Marinha, COPPE/UFRJ-Coordenacao dos Programas de Pos Graduacao de Engenharia da Universidade Federal do Rio de Janeiro
    Inventors: Saint-Clair Dantas Oliveira Santos, Luiz Roberto Martins De Miranda, Bluma Guenther Soares, Paulo Roberto Araújo Martins
  • Patent number: 8128841
    Abstract: A method and composition are provided for the operation of an evaporative cooling tower with minimal, or no, blowdown. In some embodiments, the method involves using sodium cation-exchanged softened water as makeup water for the cooling tower, providing a bypass filter for suspended solids removal from the cooling water, treating the cooling water with a composition for control of corrosion and deposition, and using an effective biocide for control of biological growth within the cooling tower system. In some embodiments, a composition is provided that comprises AMPS acrylic terpolymer, sodium silicate, phosphate ions, and polyphosphate ions. When dosed at the recommended levels, the composition controls corrosion of cooling system materials to generally acceptable levels in spite of the extremely corrosive environment resulting from the cycling of sodium cation-exchanged softened water in the cooling tower.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: March 6, 2012
    Assignee: Prochemtech International, Inc.
    Inventor: Timothy E. Keister
  • Patent number: 8105988
    Abstract: One or more methods for inhibiting corrosion in a fluid that contain a composition with a specified generic formula are disclosed. The fluid can be contained in an oil or gas pipeline or refinery.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: January 31, 2012
    Assignee: Nalco Company
    Inventors: Erick J. Acosta, Jeffery Caleb Clark
  • Patent number: 8105987
    Abstract: One or more methods for inhibiting corrosion in an aqueous medium that contain a composition with a specified generic formula are disclosed. The aqueous medium can be contained in an oil or gas pipeline or refinery.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: January 31, 2012
    Assignee: Nalco Company
    Inventors: Erick J. Acosta, Jeffery Caleb Clark
  • Publication number: 20110297038
    Abstract: A corrosion inhibiting structure includes a mineral tubule having a first end, a second end, and a lumen extending from the first end to the second end. The lumen terminates in a first opening at the first end and a second opening at the second end. The corrosion inhibiting structure also includes an anticorrosion deposit disposed within the lumen, and first and second precipitate stoppers covering the first and second openings, respectively. A coating composition includes a population of corrosion inhibiting structures and a coating material. A method of inhibiting corrosion includes loading anticorrosion agent deposits into lumens, forming stoppers at first and second openings by mixing loaded mineral tubules with a solution containing a predetermined concentration of transition metal ions, mixing the loaded mineral tubules having stoppers with a coating material to form a composite material, and applying the composite material to a metal surface.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: LOUISIANA TECH UNIVERSITY RESEARCH FOUNDATION
    Inventors: Yuri M. Lvov, Elshad Abdullayev
  • Patent number: H2287
    Abstract: A structural low carbon steel in combination with and in contact with an aqueous MDEA solvent that includes as an amine-based chemical additive. When mixed with MDEA solvent to form a MDEA solution, the MDEA-based solution in contact with carbon steel reduces the corrosion rate of low carbon structural carbon steels having a carbon content greater than about 0.18% by weight is significantly reduced when the concentrations of CO2, O2 and heat stable salts (HSS) are controlled below critical amounts. The MDEA solution, when controlling the concentrations of CO2, O2 and HSS below critical amounts, suppresses the corrosion of carbon steel having a carbon content greater than about 0.18%. A smooth surface finish further suppresses the corrosion of the low carbon structural steel. When the CO2, O2 and HSS are maintained below critical values, a low carbon structural steel having a micropolished surface finish displayed improved corrosion resistance.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 3, 2013
    Inventors: Frederic Vitse, Stephen A. Bedell