Nitrogen Organic Compound Containing Patents (Class 252/394)
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Patent number: 7722841Abstract: The present invention is directed to the use of a combination of a polymeric chelant and coagulant to treat metal containing wastewater. More particularly, the invention is directed at removing copper from CMP wastewater. The composition includes a combination of (a) a polymeric chelant derived from a polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetraamine (TETA), tertraethylenepentaamine (TEPA), poly[vinylamine], and branched or linear poly[ethylenimine] (PEI); and (b) a water soluble or dispersible copolymer of a tannin and a cationic monomer selected from the group consisting of methyl chloride or dimethyl sulfate quaternary salt of dimethyl aminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and diallyl dimethyl ammonium chloride.Type: GrantFiled: April 25, 2006Date of Patent: May 25, 2010Assignee: General Electric CompanyInventors: Baraka Kawawa, Stephen R. Vasconcellos, William Sean Carey, Nicholas R. Blandford
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Publication number: 20100123100Abstract: 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: ApplicationFiled: November 20, 2008Publication date: May 20, 2010Inventors: Jasbir S. Gill, Michael A. Kamrath, Kaveh Sotoudeh
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Patent number: 7662312Abstract: A pigment grade corrosion inhibitor and a method of applying the inhibitor is disclosed. The inhibitor is comprised of a host species comprised of an inorganic compound having a layered structure and a guest species comprised an anionic species of a weak acid. The host species is preferably a double hydroxide having a structure of: [M(II)1?x M(III)x (OH?)2] [An?x/n.y H2O], where M(II) is a divalent metal cationic species, M(III) is a trivalent metal cationic species, and An? is an anionic species, preferably with the species present in a range of: 0.2?M(III)/(M(II)+M(III))?0.4. The guest species include: various phosphoric acids and derivatives thereof; boric acid; cyanamidic acid; nitrous acid; derivatives of thio- and dithiocarbonic acid; thio-organic compounds functionalized with at least one —SH group of acidic character, including: 2,5-dimercapto-1,3,4-thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4 thiadiazole, trithiocyanuric acid (TMT), and dithiocyanuric acid.Type: GrantFiled: November 1, 2007Date of Patent: February 16, 2010Assignee: Wayne Pigment Corp.Inventors: John Sinko, Martin W. Kendig
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Publication number: 20090277625Abstract: Described herein are compositions for reducing or preventing the degradation of equipment and articles exposed to hydrogen sulfide present in high concentrations in subterranean environments (e.g., oil and gas wells). The compositions are composed of a thermoplastic resin, a thermosetting resin, or a combination thereof, and at least one compound that interacts with hydrogen sulfide from the subterranean environment. In certain aspects, the compositions are coated on the article of interest. In other aspects, the composition is used to manufacture the article and, thus, is integrated throughout the article.Type: ApplicationFiled: February 24, 2009Publication date: November 12, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORP.Inventors: YUN BAI, TIMOTHY G.J. JONES, BERNADETTE CRASTER, AHMED HAMMAMI, TODD YAKIMOSKI
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Patent number: 7601280Abstract: Methods and compositions are described for protecting a metal surface against corrosion. The method involves applying to the metal surface a coating formulation that comprises a radiation curable resin and a corrosion-responsive agent that is capable of releasing a corrosion-inhibiting ion in response to exposure to ionic species characteristic of those present on a metal surface undergoing oxidative corrosion; and exposing the coating formulation to radiation whereby the radiation curable resin forms a corrosion-resisting coating having a low spontaneous release rate of the corrosion-responsive agent into the environment.Type: GrantFiled: July 8, 2008Date of Patent: October 13, 2009Assignee: Lumimove, Inc. A Missouri CorporationInventor: Patrick J. Kinlen
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Publication number: 20090194731Abstract: Oxidized and maleated derivative compositions, such as chemically modified oxidized and maleated tall oil fatty acid compositions, can be prepared and used in a variety of industrial applications, including as emulsifiers, corrosion inhibitors, concrete admixtures, and in reverse flotation mining applications.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Phillip W. Hurd, Roger Scott Johnson, John B. Hines, Brett A. Neumann
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Publication number: 20090065736Abstract: Chemically modified maleated fatty acid compositions and the salts thereof, especially chemically modified tall oil fatty acid containing compositions are useful in formulating corrosion inhibitors, as emulsifiers, as collectors in mining applications, and as cross-linking agents, such compositions find particular utility for petroleum-related applications.Type: ApplicationFiled: July 2, 2008Publication date: March 12, 2009Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Roger Scott Johnson, Phillip W. Hurd, John B. Hines, Brett Neumann
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Publication number: 20090057617Abstract: The invention relates to the use of compounds of the formula (1) in which R1 is C1- to C29-alkyl, C2- to C29-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, and anionic surfactants as corrosion inhibitors.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Inventors: Dirk Leinweber, Michael Feustel
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Publication number: 20090057618Abstract: The invention relates to the use of compositions containing metal salts of compounds of the formula (1) in which R1 is C1- to C29-alkyl, C2- to C29-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, and amphoteric surfactants as corrosion inhibitors.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Inventors: Dirk Leinweber, Michael Feustel
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Publication number: 20090057615Abstract: The invention relates to the use of compounds of the formula (1) in which R1 is C1— to C29-alkyl, C2— to C29-alkenyl, C6— to C30-aryl or C7— to C30-alkylaryl, and nonionic surfactants as corrosion inhibitors.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Inventors: Dirk Leinweber, Michael Feustel
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Publication number: 20090057616Abstract: The invention relates to the use of compositions containing metal salts of compounds of the formula (1) in which R1 is C1- to C29-alkyl, C2- to C29-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, and cationic surfactants as corrosion inhibitors.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Inventors: Dirk Leinweber, Michael Feustel
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Patent number: 7485177Abstract: A corrosion inhibiting mixture is disclosed comprising a carrier, a volatile corrosion inhibitor and a tracing agent which absorbs light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emits light in the blue region of the electromagnetic spectrum.Type: GrantFiled: July 20, 2007Date of Patent: February 3, 2009Assignee: SKS IndustriesInventors: Robin McConnell, Wesley Raymond Measel, Jr.
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Publication number: 20080308770Abstract: A quaternary nitrogen-containing corrosion inhibitor of formula wherein is an aromatic, nitrogen-containing ring of 5 to 14 ring atoms, optionally containing an additional N, O or S ring atom and optionally substituted with one or more alkyl, alkenyl, aryl, arylalkyl, cycloalkyl, amino, aminoalkyl, alkoxy, hydroxylalkyl, or cyano groups, or a mixture thereof, Y is a group of formula —OC(O)R1 or —C(O)R1; L is C1-C10 alkyl, C2-C10 alkenyl or a group of formula CH2CH(OR2)CH2—; R1 is C8-C20 alkyl or C8-C20 alkenyl; R2 is H or C(O)R1; R3 and R4 are independently selected from H, alkyl, alkenyl, amino, alkoxy, hydroxylalkyl and cyano; and X is Br, Cl or I is particularly useful for inhibiting corrosion in oil and gas field applications.Type: ApplicationFiled: June 14, 2007Publication date: December 18, 2008Inventor: Laxmikant Tiwari
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Publication number: 20080272341Abstract: Methods and compositions are described for protecting a metal surface against corrosion. The method involves applying to the metal surface a coating formulation that comprises a radiation curable resin and a corrosion-responsive agent that is capable of releasing a corrosion-inhibiting ion in response to exposure to ionic species characteristic of those present on a metal surface undergoing oxidative corrosion; and exposing the coating formulation to radiation whereby the radiation curable resin forms a corrosion-resisting coating having a low spontaneous release rate of the corrosion-responsive agent into the environment.Type: ApplicationFiled: July 8, 2008Publication date: November 6, 2008Applicant: Lumimove,Inc. dba CROSSLINK POLYER RESEARCHInventor: Patrick J. Kinlen
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Publication number: 20080258114Abstract: A pigment grade corrosion inhibitor and a method of applying the inhibitor is disclosed. The inhibitor is comprised of a host species comprised of an inorganic compound having a layered structure and a guest species comprised an anionic species of a weak acid. The host species is preferably a double hydroxide having a structure of: [M(II)1-x M(III)x (OH?)2] [An?x/n·y H2O], where M(II) is a divalent metal cationic species, M(III) is a trivalent metal cationic species, and An? is an anionic species, preferably with the species present in a range of: 0.2?M(III)/(M(II)+M(III))?0.4. The guest species include: various phosphoric acids and derivatives thereof; boric acid; cyanamidic acid; nitrous acid; derivatives of thio- and dithiocarbonic acid; thio-organic compounds functionalized with at least one —SH group of acidic character, including: 2,5-dimercapto-1,3,4-thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4 thiadiazole, trithiocyanuric acid (TMT), and dithiocyanuric acid.Type: ApplicationFiled: November 1, 2007Publication date: October 23, 2008Inventors: John Sinko, Martin W. Kendig
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Publication number: 20080187673Abstract: Aqueous oil-in-water emulsion comprising from 1 to 70% by weight, based on the total weight of the emulsion, of functional alkoxysilanes and/or condensed oligomers thereof and/or organoalkoxysiloxanes, at least one emulsifier and water, wherein the emulsion has a pH of from 5 to 9 and preferably a mean droplet size of the disperse phase of ?0.5 ?m, and the width of the droplet size distribution, expressed as the span (Formula I), is from 0.6 to 1.2. The preparation of the emulsions having the desired droplet size distribution is carried out in apparatuses having at least one pressure stage at a pressure of from 2 to 15 MPa. The emulsion can be used for hydrophobicizing porous mineral building materials.Type: ApplicationFiled: December 8, 2005Publication date: August 7, 2008Applicant: DEGUSSA GmbHInventors: Burkhard Standke, Kerstin Weissenbach, Bernd Bartkowiak
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Patent number: 7407623Abstract: Lecithin and 2-bromo-2-nitropropane-1,3 diol (BNPD) are used to inhibit corrosion in boiler steam condensate systems. Aqueous steam condensate corrosion inhibiting compositions of these components are also disclosed. BNPD is also used as a preservative in lecithin containing and in other GRAS additive containing compositions.Type: GrantFiled: October 5, 2004Date of Patent: August 5, 2008Assignee: GE Betz, Inc.Inventors: Wilson K. Whitekettle, Rosa Crovetto
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Patent number: 7402263Abstract: A trace amount of a tungstate is disclosed for inhibiting corrosion by nitrogen fertilizer solution, in particular, an ammonium nitrate fertilizer solution, (UAN) in contact with ferrous metal storage tanks, piping, and equipment surfaces. Tungstate added with a dispersant polymer is also effective for inhibiting corrosion.Type: GrantFiled: April 25, 2005Date of Patent: July 22, 2008Assignee: Nalco CompanyInventors: Craig W. Myers, Steven R. Hatch, Donald A. Johnson
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Publication number: 20080171440Abstract: A pre-polishing treatment solution has a prominent corrosion inhibiting effect, and can be used in pre-polishing treatments for interconnect substrates. The pre-polishing treatment solution comprises a corrosion inhibitor dissolved in an organic solvent.Type: ApplicationFiled: January 15, 2008Publication date: July 17, 2008Inventors: Akira Kodera, Takayuki Saito, Yasushi Toma, Tsukuru Suzuki, Itsuki Kobata
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Patent number: 7393395Abstract: The present invention provides a surface-treating agent which improves heat resistance, adhesiveness to resin and solder wettability. The surface-treating agent for metal contains a tetrazole derivative represented by the following formula and/or a salt thereof, wherein R1 and R2 each independently represent a hydrogen atom, a halogen atom, or an alkyl group or an aryl group, etc., which each have a carbon number of not more than 10, and a group having a halogen atom, a hydroxyl group, a carboxyl group, an amino group or a mercapto group added thereto, or represent an amino group, a mercapto group, a hydroxyl group or a carboxyl group; and R3 represents a bond or an alkylene group, etc.Type: GrantFiled: January 21, 2005Date of Patent: July 1, 2008Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Akihiro Aiba, Tomoharu Mimura
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Publication number: 20080001125Abstract: Corrosion induced by the presence of naphthenic acids in hydrocarbon fluids, particularly where such fluids are at elevated temperatures, may be inhibited or controlled through use of corrosion inhibiting compositions comprising a combination of a minor portion of a phosphorus-based constituent and a major portion of a sulfur-based constituent, nitrogen-based constituent, or combination thereof. In another embodiment the sulfur-based constituent and/or nitrogen-based constituent may be used without any phosphorus-based constituent. Where the compounds are appropriately selected, the compositions may inhibit corrosion to a degree comparable or nearly comparable to the inhibition provided by an equal amount of some conventional phosphorus-based compounds alone, but are significantly less likely to impair catalyst activity in downstream cracking and refinery operations.Type: ApplicationFiled: November 17, 2006Publication date: January 3, 2008Applicant: Baker Hughes IncorporatedInventors: Michael J. Zetlmeisl, Bradley G. Harrell, Bradley G. Borgard, Scott Bieber
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Patent number: 7297191Abstract: A corrosion inhibitor composition includes between about 95 and about 99 percent by weight ammonium benzoate, and between 1 and about 5 percent by weight of silica. The composition may be water soluble for use in solution-based applications.Type: GrantFiled: October 6, 2006Date of Patent: November 20, 2007Assignee: Cortec CorporationInventors: Boris A. Miksic, Margarita Karshan, Ashish Gandhi
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Patent number: 7186354Abstract: According to the present invention, there is provided an anticorrosive treating concentrate usable for an exposed surface of a metal (e.g. copper or a copper alloy), containing an anticorrosive agent and a precipitation inhibitor and having a pH of 4 to 12 when used in the form of an aqueous solution, in which concentrate the anticorrosive agent is a triazole type compound and/or a derivative thereof and is contained in a concentration of 0.05 to 20% by weight and the precipitation inhibitor is a compound having at least one nitrogen atom but no metal atom in the molecule.Type: GrantFiled: March 5, 2001Date of Patent: March 6, 2007Assignees: NEC Electronics Corporation, Sumitomo Chemical Company LimitedInventors: Hidemitsu Aoki, Hiroaki Tomimori, Masayuki Takashima
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Patent number: 7141102Abstract: An object of the present invention is to provide an antifreeze solution which is used by adding it to a heating medium of a heat exchanger or a radiator coolant for an internal combustion car engine, which can be used to prevent the icing of road surfaces, which is easy to use and environmentally friendly, and which does not contain environmentally harmful substances such as ethylene glycol so that it can be easily treated for disposal after use. Another object of the present invention is to provide an antifreeze solution which contains water as a main component and glycerin. The undiluted antifreeze solution does not freeze even at ?20° C. or less at normal pressures and is composed of components at a certain ratio.Type: GrantFiled: January 29, 2004Date of Patent: November 28, 2006Assignee: Kikuko FukutaniInventors: Yasuo Fukutani, Etsushi Tanaka, Yukio Wada
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Patent number: 7125483Abstract: A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese, mercury, magnesium, calcium, sodium, copper, zinc, lead, molybdenum, and aluminum, the improvement comprising introducing ethylene diamine into at least one process stream of the plant.Type: GrantFiled: April 10, 2003Date of Patent: October 24, 2006Assignee: Equistar Chemicals, LPInventor: Robert J. Haynal
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Patent number: 7118615Abstract: A corrosion inhibitor composition includes between about 90 and about 99 percent by weight ammonium benzoate, and one or more additive components in an amount of between 1 and about 10 percent by weight of the composition. The one or more additive components are selected from the group consisting of silica, triazoles, and wetting agents.Type: GrantFiled: September 12, 2003Date of Patent: October 10, 2006Assignee: Cortec CorporationInventors: Boris A. Miksic, Margarita Karshan, Ashish Gandhi
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Patent number: 7081143Abstract: The present invention relates to emulsion compositions for starting a reformer of a fuel cell system. In particular, the invention includes emulsion compositions comprising hydrocarbon fuel, water and alkoxylated triazine surfactants for starting a reformer of a fuel cell system.Type: GrantFiled: December 20, 2002Date of Patent: July 25, 2006Assignee: ExxonMobil Research and Engineering CompanyInventors: Ramesh Varadaraj, Paul Joseph Berlowitz
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Patent number: 7057050Abstract: This invention provides a series of novel acrylated, substituted imidazoline corrosion inhibitors of the formula: wherein R1 is an alkyl radical having from 2 to 8 carbon atoms; R2 is a radical derived from a fatty acid; and R3 is a radical derived from an unsaturated acid and a method for inhibiting corrosion in metallic flow lines through the introduction of such inhibitors into a system wherein corrosion is sought to be precluded.Type: GrantFiled: April 11, 2003Date of Patent: June 6, 2006Assignee: Nalco Energy Services L.P.Inventor: George Richard Meyer
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Patent number: 7008561Abstract: The present invention relates to compounds of formula (1) and the salts thereof which correspond to formula (2). In the formulae, A is C2- to C4-alkylene, x is a number from 1 to 100, y is a number from 1 to 4, and R is a cation. The compound of formula (1) and/or formula (2) forms a persistent film on metal surfaces, particularly on metal surfaces under stress in metal working and in the operation of crude oil and natural gas processing.Type: GrantFiled: April 30, 2002Date of Patent: March 7, 2006Assignee: Clariant GmbHInventors: Uwe Dahlmann, Michael Feustel, Rainer Kupfer
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Patent number: 6939483Abstract: It has been discovered that ammonia and amines are useful to increase the pH and corrosion resistance of high density brines, such as zinc bromide brines, without significantly reducing their densities. The ammonia or amine additive is preferably incorporated by contacting the brine with the additive which is in the vapor phase. Optionally, a substituted carboxylic acid, such as hydroxy carboxylic acid, may be used to increase the amount of ammonia or amine that can be included in the high density brine without precipitation of salts.Type: GrantFiled: October 11, 2001Date of Patent: September 6, 2005Assignee: PABU Services, Inc.Inventor: Michael L. Walker
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Patent number: 6881279Abstract: A chemically and thermally stable chromate free aqueous liquid treatment for metals, especially aluminum, that imparts corrosion resistance as good as that from conventional chromate containing treatments, contains water and a fluoroacid selected from the group consisting of H2TiF6, H2 ZrF6, H2HfF6, H2SiF6, H2GeF6, H2SnF6, HBF4, and mixtures thereof; a water soluble organic carboxylic acid that contains at least two hydroxyl groups, exclusive of the hydroxyl groups that are part of any carboxyl groups, per carboxyl group in each acid molecule, the water soluble salts of such acids, and mixtures thereof; a source of phosphate ions; and an organic component selected from the group consisting of tannins and amino-phenolic polymers.Type: GrantFiled: December 11, 2002Date of Patent: April 19, 2005Assignee: Henkel CorporationInventors: Kevin K. Meagher, Thomas J. Prescott, Timm L. Kelly
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Publication number: 20040259740Abstract: The use of a compound according to formula I, in particular, thiohydantoin, as a corrosion inhibitor or a corrosion inhibitor synergist.Type: ApplicationFiled: March 12, 2004Publication date: December 23, 2004Applicant: TR Oil Services LimitedInventor: Henry Alfred Craddock
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Patent number: 6770222Abstract: The invention relates to a polymerization inhibitor comprising at least one compound (a) selected from the group consisting of a compound having an NO radical in its molecule and a precursor compound capable of forming an NO radical, and a phosphorus-containing compound (b), wherein a weight ratio of the compound (a) to the phosphorus-containing compound (b) is 1:10 to 100:1. Specifically, the invention provides a method for inhibiting the polymerization of at least one monomer (c) selected from the group consisting of a conjugated diene, an aromatic vinyl, an ethylenically unsaturated nitrile and an &agr;-olefin, comprising causing the polymerization inhibitor to coexist with the monomer (c), and a polymerization-inhibiting composition comprising the polymerization inhibitor and the monomer (c).Type: GrantFiled: September 1, 2000Date of Patent: August 3, 2004Assignee: Nippon Zeon Co., Ltd.Inventors: Keizo Ukita, Yuko Onodera
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Patent number: 6599445Abstract: The present invention relates to a process for making and a method for using a corrosion inhibitor composition to reduce the corrosion rate of a metal by a fluid containing a corrosion agent. The corrosion inhibitor composition comprises at least a quaternized compound having a substituted diethylamino moiety. Examples of the quaternized compound having a substituted diethylamino moiety are quaternized diacrylamino imidazolines.Type: GrantFiled: July 18, 2002Date of Patent: July 29, 2003Assignee: Ondeo Nalco Energy Services, L.P.Inventor: George Richard Meyer
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Patent number: 6592781Abstract: A novel composition of thiazolidines of the following formula and a method to prepare the same are disclosed. The method involves reacting a dihydrothiazole with a mixture comprising formic acid and an aldehyde. These new thiazolidines are useful as corrosion inhibitors.Type: GrantFiled: May 29, 2002Date of Patent: July 15, 2003Assignee: Baker Hughes IncorporatedInventors: Bernardus Antonius Maria Oude Alink, Benjamin T. Outlaw
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Patent number: 6593278Abstract: The present invention relates to a method for inhibiting corrosion of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of certain sulfur and phosphorus-free aromatic compounds substituted with nitrogen, containing functional groups at the 5- or 3, 5-position, typically up to 1000 wppm, to the metal surface.Type: GrantFiled: July 13, 2001Date of Patent: July 15, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Mohsen S. Yeganeh, Shawn Michael Dougal, Guido Sartori, David Craig Dalrymple, Cheayao Zhang, Saul Charles Blum, Liza Marie Monette
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Patent number: 6585933Abstract: A method and composition for controlling corrosion of metals, particularly ferrous-based metals in contact with aqueous systems is disclosed, which includes treating industrial waters with a combination of a tetrazolium salt of the general formula: where R1, R2 and R3 may be various organic or inorganic substitutents, where n may be 1 or 2, and at least one other aqueous system treatment material.Type: GrantFiled: May 3, 1999Date of Patent: July 1, 2003Assignee: BetzDearborn, Inc.Inventors: William C. Ehrhardt, Longchun Cheng, Dawn Stasney, Kim A. Whitaker
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Patent number: 6562149Abstract: The invention concerns processes and solutions for the preliminary treatment of copper surfaces which are subsequently to be firmly bonded to organic substrates. The solution is used, in particular, for firmly bonding laminated multilayered printed circuit boards and for firmly bonding resists to the copper surfaces of printed circuit boards.Type: GrantFiled: August 22, 2000Date of Patent: May 13, 2003Assignee: Atotech Deutschland GmbHInventors: Udo Grieser, Heinrich Meyer
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Patent number: 6555600Abstract: Corrosion inhibiting thermoplastic alloys and methods of preparing same for use in fabricating molded articles with long-term corrosion protection. Masterbatches of nylon, polycarbonate, and polyethylene terephthalate high temperature engineering plastic resins together with selected corrosion inhibitor formulations are extruded for use in injection molding operations Molded articles are prepared from the high temperature engineering plastic resins and a solid phase corrosion inhibitor blended in situ, and wherein the resin consists essentially of nylon, polycarbonates, and polyethylene terephthalate, and wherein the corrosion inhibitor contains a blend of corrosion inhibitors such as cyclohexylammonium benzoate, sodium nitrite, benzotriazole, and sodium sebacate.Type: GrantFiled: February 5, 2001Date of Patent: April 29, 2003Assignee: Cortec CorporationInventors: Alex Sobkin, Boris A. Miksic, Michael Hobday
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Patent number: 6540934Abstract: The present provides novel deicing and anti-icing compositions which are especially adapted for and are highly useful as deicing and anti-corrosion products, especially on many surfaces which require protection against icing and corrosion, such as airport runways.Type: GrantFiled: July 13, 2001Date of Patent: April 1, 2003Assignee: Metss CorporationInventors: Richard Sapienza, William Ricks, Joseph Sanders
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Publication number: 20030053927Abstract: Provided are compositions and methods for releasing oxygen scavengers into a coolant. The compositions include a controlled release component and an oxygen scavenger component which includes at least one oxygen scavenger. Methods and devices for releasing oxygen scavengers into a coolant are also provided.Type: ApplicationFiled: October 15, 2002Publication date: March 20, 2003Applicant: Dober Chemical CorporationInventors: Joseph C. Drozd, Thomas J. Blakemore, Yu-Sen Chen
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Patent number: 6533962Abstract: The anticorrosive plastic packaging materials for protecting iron, aluminum and alloys of these metals against corrosion comprise synergistic mixture of contact-vapour phase corrosion inhibitors containing salt or salts selected from the salts of ammonium and alkali metals or alkaline-earth metals derived from benzoic acid and for nitrous acid and 1,3-benzodiazole and for its 1-methyl derivative and 1H-benzotriazole and/or its methyl derivative and amorphous silicium oxide. As the anticorrosive plastic packaging article are predominantly used films or packaging products made of film, containers, either of mono- or multi-layer construction, wherein in case of multilayer packaging articles the synergistic mixture of contact-vapour phase inhibitors is with advantage added to the layer or layers closer to the article to be protected.Type: GrantFiled: June 15, 2001Date of Patent: March 18, 2003Assignees: Vojensky Technicky Ustav Ochrany, Polymer Institute Brno, Spol.S. R.O.Inventors: Jaromír Tulka, Eva Jan{haeck over (c)}ová, Ji{haeck over (r)}í Sedlá{haeck over (r)}, Ji{haeck over (r)}í Pác
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Patent number: 6524376Abstract: An anticorrosive agent containing, as essential components, (a) urea or a urea derivative and (b) a hydroxy aromatic compound.Type: GrantFiled: January 25, 2001Date of Patent: February 25, 2003Assignee: NEC CorporationInventors: Hidemitsu Aoki, Tatsuya Koito, Kenichi Nakabeppu
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Patent number: 6521028Abstract: The present invention is directed to methods for preparing quaternary ammonium salts, particularly pyridinium and quinolinium salts. By preparing these salts in a solvent selected from the group consisting of propylene glycols, propylene glycol ethers and mixtures thereof, the production of undesirable by-products and contamination of the product with undesirable solvents are minimized, if not eliminated. Using the preparation methods of the present invention low hazard corrosion inhibitors and aqueous cleaning solutions using these inhibitors may be prepared. In fact, by preparing dodecyl pyridinium bromide in dipropylene glycol methyl ether as the solvent, a particularly desirable corrosion inhibitor characterized by a low toxicity and a high flash point has been prepared. The present invention thus provides the safer corrosion inhibitors and cleaning solutions long sought by industrial cleaning services.Type: GrantFiled: August 28, 2000Date of Patent: February 18, 2003Assignee: HydroChem Industrial Services, Inc.Inventor: Wayne W. Frenier
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Patent number: 6517617Abstract: The present invention relates to the application of a coating to a pipeline, FPS (Fire Protection System) or to pipe stock from which a pipeline is fabricated. A composition which when applied to the inside surface of the pipe prevents either chemical corrosion or microbiologically influenced corrosion is disclosed. Also disclosed is a method for utilizing this material to protect both existing pipelines and the raw stock used to construct pipelines and various apparatus for applying a coating of the composition, cleaning, and maintenance of the passive coating. Also disclosed is a method to recycle the composition to be used in other industrial pacification processes.Type: GrantFiled: September 20, 2001Date of Patent: February 11, 2003Assignee: WHI USA, Inc.Inventors: Douglas M. Chartier, Calvin L. Reid
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Patent number: 6518374Abstract: Free radical polymerizations immediately terminated by a process comprising the addition of an inhibitor solution which contains phenothiazine and at least 50% (w/w) N-alkylpyrrolidone to a system undergoing free radical polymerization, wherein the inhibitor solution also contains p-methoxyphenol (MEHQ).Type: GrantFiled: October 29, 2001Date of Patent: February 11, 2003Assignee: BASF AktiengesellschaftInventors: Heinrich Aichinger, Gerhard Nestler, Jürgen Schröder
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Publication number: 20030015685Abstract: The present provides novel deicing and anti-icing compositions which are especially adapted for and are highly useful as deicing and anti-corrosion products, especially on many surfaces which require protection against icing and corrosion, such as airport runways.Type: ApplicationFiled: July 13, 2001Publication date: January 23, 2003Inventors: Richard Sapienza, William Ricks, Joseph Sanders
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Patent number: 6488868Abstract: The present invention relates to a process for making and a method for using a corrosion inhibitor composition to reduce the corrosion rate of a metal by a fluid containing a corrosion agent. The corrosion inhibitor composition comprises at least a quaternized compound having a substituted diethylamino moiety. Examples of the quaternized compound having a substituted diethylamino moiety are quaternized diacrylamino imidazolines.Type: GrantFiled: March 15, 1999Date of Patent: December 3, 2002Assignee: Ondeo Nalco Energy Services, L.P.Inventor: George Richard Meyer
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Patent number: 6488749Abstract: An object of the present invention is to provide an aquarous rust inhibitor having low toxicity and excellent rust resistance, which contains saturated fatty acid, saturated dicarboxylic acid and salt thereof, derivatives of ethylenediamine tetraacetic acid, tolyltriazole or benzotriazole, fatty acid metal salt, and water.Type: GrantFiled: July 10, 2001Date of Patent: December 3, 2002Inventors: Yasuo Fukutani, Kikuko Fukutani, Yukio Wada, Yoshiki Ueno, Shinya Fukushima, Eiichiro Nakayama
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Patent number: 6475431Abstract: A low toxic, biodegradable, water soluble and dispersant series of corrosion inhibitors are described. The method of inhibiting corrosion in aqueous medium by incorporating the inhibitor in PPM is provided. The corrosion inhibitor compromises an acrylic acid and chloroacetic acid adduct of 2-substituted imidazolines or primary, secondary or tertiary amines with carbon chain of twelve to twenty-two saturated or unsaturated carbon atoms. The molar ratio of acrylic acid to chloroacetic acid was methodically changed while keeping the concentration of imidazoline or the amine a constant. The product is made water soluble by raising the pH to 8-9 at the end of the synthesis by adding aqueous sodium hydroxide.Type: GrantFiled: April 9, 1999Date of Patent: November 5, 2002Assignee: Champion Technologies, Inc.Inventors: Ali Naraghi, Nihal U. Obeyesekere