Silicon Containing Patents (Class 252/389.3)
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Patent number: 8980377Abstract: A transparent, non-yellowing, polymer-clay, concrete sealer and methods for making and applying the same. The disclosed clay-based sealer provides a tough, ultraviolet-light-, temperature-, and abrasion-resistant layer that effectively protects surfaces from moisture penetration, staining, dirt, dust, and wear. The substrates to which the clay-based sealer may be applied include, but are not limited to, above and below grade concrete structures, brick, concrete masonry unit (CMU) block, grout, plaster, gunite, tile, and aggregate. The clay-based sealer may easily be applied with airless or air-assisted sprayers, or by roller, brush, or applicator pad. Once applied, the sealer requires minimal maintenance.Type: GrantFiled: April 20, 2012Date of Patent: March 17, 2015Inventors: Eduard A. Stefanescu, Sunil V. Kulkarni
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Patent number: 8911542Abstract: The invention relates to an anti-corrosive composition comprising an active material of formula I wherein R is an aliphatic chain of C12 to C20 and n?20; an anti-corrosive pigment, a filler mixture, and a diluent or carrier. The invention also relates to a process for preparing the anticorrosive composition and a metal substrate having a coating comprising the anti-corrosive composition.Type: GrantFiled: December 15, 2011Date of Patent: December 16, 2014Assignee: 3M Innovative Properties CompanyInventors: Samir H. Soni, Dhritisunder Bhattacharya
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Patent number: 8758876Abstract: A coating which provides corrosion resistance, wear resistance, and, optionally, lubrication, for deposition on a threaded article is disclosed. The coating comprises a polymer matrix, such as a polyimide, which is modified with small amounts of a fluorine containing polymer modifier, as well as other compounds or additives to improve performance of the coating. Additionally, the coating can further comprise a solid lubricant or an anticorrosion compound dispersed within the polymer matrix.Type: GrantFiled: October 30, 2012Date of Patent: June 24, 2014Assignee: Tenaris Connections LimitedInventors: Gabriel Eduardo Carcagno, Klaus Endres
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Patent number: 8728628Abstract: The present invention provides a passivant for hot-dip Al—Zn-coated sheet of which the raw materials include: 2˜6 parts by weight of water soluble molybdate, 4˜12 parts by weight of water soluble manganese salt, 50˜100 parts by weight of basic silica sol and 50˜100 parts by weight of water soluble organic resin. The present invention also provides a method to prepare the passivant for hot-dip Al—Zn-coated sheet including the following steps: adding and dissolving water soluble molybdate and water soluble manganese salt into deionized water; adding basic silica sol into the solution and mixing well; adding water soluble organic resin into the solution and mixing well; regulating the pH value of the solution to 5˜8 by using phosphoric acid. The present invention also provides a hot-dip Al—Zn-coated sheet treated with the present passivant and a method to passivate hot-dip Al—Zn-coated sheet.Type: GrantFiled: April 7, 2010Date of Patent: May 20, 2014Assignees: Pangang Group Steel Vanadium and Titanium Co., Ltd., Pangang Group Research Institute Co., Ltd., Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.Inventors: Ping Yuan, Taixiong Guo, Quan Xu, Dan Yu, Yong Zhang, Zhefeng Xu, Yilin Zhou
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Patent number: 8637158Abstract: The present invention relates to a polymerizable composition and to a method for coating metal surfaces, in particular steel, galvanized and alloy-galvanized steel, and also aluminum and alloys thereof, as protection against corrosion. The polymerizable composition preferably contains less than 10% by weight of portions which are not incorporated in the cured coating. In a further aspect, the invention relates to the use of the claimed composition for coating workpieces consisting of the above-mentioned metals, particularly metal surfaces in blanking lines (coil coating). The present invention therefore also comprises the use of metal surfaces, coated according to the invention, for the production of “white goods” (household appliances), automobile bodies, electronic component housings, and for the building trade and the transport sector.Type: GrantFiled: September 23, 2009Date of Patent: January 28, 2014Assignee: Henkel AG & Co. KGaAInventors: Jörg Sander, Jürgen Stodt, Holger Endres
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Publication number: 20130142977Abstract: 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: ApplicationFiled: January 28, 2013Publication date: June 6, 2013Applicant: NATIONAL OILWELL VARCO, L.P.Inventor: NATIONAL OILWELL VARCO, L.P.
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Patent number: 8322754Abstract: Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer. Also present in the coating compositions are corrosion inhibiting agents and inorganic particles having a mean diameter of between approximately 10 nm and 10 ?m. Solid lubricants, which may include at least one of PTFE, HDPE, Graphite, and MoS2, are optionally added to provide the first coating with a low coefficient of friction. The coating systems may further comprise a second coating composition, comprising a solid lubricant dispersed within an epoxy resin and a solvent. The first and second coating compositions are deposited on at least a portion of at least one of the pin and box members of the threaded connections.Type: GrantFiled: August 28, 2007Date of Patent: December 4, 2012Assignee: Tenaris Connections LimitedInventors: Gabriel Eduardo Carcagno, Klaus Endres
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Publication number: 20120286197Abstract: This invention covers formulation providing protection against corrosion in both the liquid and vapor phase. Such formulations are used in applications where engine parts or fuel cell systems are subjected to a “running-in” or “hot test” prior to final assembly or storage. The invention includes a concentrate as well as a dilute solution. The synergistic combination of inorganic ammonium derivatives in combination with monocarboxylic or dicarboxylic acids and a silicate dramatically increases the period of protection for both ferrous and aluminum alloys. This enables storage for a longer period when the engine parts are shipped or stored prior to assembling.Type: ApplicationFiled: November 10, 2011Publication date: November 15, 2012Applicant: Chevron U.S.A. Inc.Inventors: Jurgen P. De Kimpe, Serge S. Lievens
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Patent number: 8288000Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: August 13, 2007Date of Patent: October 16, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Kaliappa G. Ragunathan, John R. Schneider
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Patent number: 8283042Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: May 24, 2010Date of Patent: October 9, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Edward R. Millero, John R. Schneider, Cheng-Hung Hung, Noel R. Vanier
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Publication number: 20120187343Abstract: Chromate-free corrosion-inhibiting coating compositions comprising film-forming binders and galvanic aluminum alloy powders prepared in an oxygen (oxidizing), nitrogen (inert) or nitrogen-hydrogen (reducing) atmosphere having particle sizes ranging up to 100 microns. The aluminum alloy powders having the formula: aluminum-zinc-X (AlZnX) wherein X is an element selected from the group consisting of indium, gallium, tin and bismuth. Improvement in corrosion protection is obtained by the addition of chemical inhibitors such as an azole or talcite clay to the coating which further inhibits the self-corrosion of the aluminum alloy and extends the corrosion protection of the metal substrate being protected.Type: ApplicationFiled: January 21, 2011Publication date: July 26, 2012Inventors: Craig Matzdorf, William Nickerson
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Publication number: 20120135267Abstract: The present invention provides a passivant for hot-dip Al—Zn-coated sheet of which the raw materials include: 2˜6 parts by weight of water soluble molybdate, 4˜12 parts by weight of water soluble manganese salt, 50˜100 parts by weight of basic silica sol and 50˜100 parts by weight of water soluble organic resin. The present invention also provides a method to prepare the passivant for hot-dip Al—Zn-coated sheet including the following steps: adding and dissolving water soluble molybdate and water soluble manganese salt into deionized water; adding basic silica sol into the solution and mixing well; adding water soluble organic resin into the solution and mixing well; regulating the pH value of the solution to 5˜8 by using phosphoric acid. The present invention also provides a hot-dip Al—Zn-coated sheet treated with the present passivant and a method to passivate hot-dip Al—Zn-coated sheet.Type: ApplicationFiled: April 7, 2010Publication date: May 31, 2012Inventors: Ping Yuan, Taixiong Guo, Quan Xu, Dan Yu, Yong Zhang, Zhefeng Xu, Yilin Zhou
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Publication number: 20110275548Abstract: The invention relates to an anticorrosive agent for metal components. In order to provide an environmentally compatible anticorrosive agent which can be applied to metal components without components having to be freed of the anticorrosive agent before installation, allows good coating even on oily surfaces, has a great anticorrosive effect and is also compatible with aqueous lubricant compositions, it is provided according to the invention that the anticorrosive agent comprises (in percent by weight): a) more than 50% water, b) a surfactant; c) a boric acid derivative; d) a platelet-like or rod-like filler; e) optionally a binder; f) optionally a carboxylic acid salt.Type: ApplicationFiled: October 12, 2009Publication date: November 10, 2011Applicant: MAGNA STEYR FAHRZEUGTECHNIK AG & CO KGInventors: Werner Handl, Franz Mayr
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Patent number: 7989075Abstract: Provided is a chromium-free, low-temperature curable, metal-surface treatment composition comprising 5 to 30 parts by weight of a silane compound having an epoxy group and a silane compound having an amino group or a hydrolytic condensate thereof; 0.1 to 5 parts by weight of a vanadium compound; 0.1 to 5 parts by weight of a magnesium compound; 1 to 10 parts by weight of organic/inorganic acids; 0.05 to 2 parts by weight of a crosslinking accelerating and coupling agent; 0.01 to 1 part by weight of an antifoaming agent; 1 to 2 parts by weight of a wetting agent; and the balance of water and ethanol, based on 100 parts by weight of the total solution. In addition, a steel sheet coated with the above-described metal-surface treatment composition is low-temperature curable and provides anticorrosiveness while containing no chromium components.Type: GrantFiled: June 20, 2006Date of Patent: August 2, 2011Assignees: POSCO, Daehan Parkerizing Co., Ltd.Inventors: Yeong-Sool Jin, Sung-Mun Keom, Jin-Tae Kim
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Publication number: 20110124738Abstract: The present invention relates to a chromate-free composition, to the use thereof for corrosion protection, and to a corrosion protection coating for the inside surfaces of fuel tanks, wherein the composition comprises binding agents, hardening agents, corrosion inhibitors and quaternary ammonium compounds in a quantity of at least 0.1% by weight.Type: ApplicationFiled: January 15, 2009Publication date: May 26, 2011Inventors: Sven Schroeder, Diana Becker, Jan Kuever, Andreas Rabenstein, Martin Kaune, Yvonne Wilke, Matthias Geistbeck, Carmen Gerlach, Ottmar Schramm, Tanja Pietzker
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Publication number: 20100297454Abstract: A chromium-free treating liquid and treatment methods which are for imparting to a zinc or zinc alloy deposit a coating film which is highly corrosion-resistant, has a uniform appearance free from sag stains/puddle stains, has no failure concerning thickness unevenness, and has satisfactory adhesion. The surface-treating aqueous solution, which is for forming a corrosion-resistant coating film over a zinc or zinc alloy deposit, is characterized by comprising (a) an alkali metal silicate (M2O.nSiO2 (wherein M represents an alkali metal and n indicates SiO2/M2O molar ratio)), (b) a water-soluble or water-dispersible silane coupling agent, and (c) a water-soluble or water-dispersible glycidyl ether compound. One of the surface treatment methods for forming a highly corrosion-resistant coating film over a zinc or zinc alloy deposit includes bringing the surface of the zinc or zinc alloy deposit into contact with the surface-treating aqueous solution.Type: ApplicationFiled: December 8, 2008Publication date: November 25, 2010Applicant: DIPSOL CHEMICALS CO., LTD.Inventors: Hitoshi Sakurai, Satoshi Yuasa, Keisuke Nonomura
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Publication number: 20100270493Abstract: The technology of this invention relates to a solution that provides protection against forms of corrosion. Such solutions are intended for use in applications where cooling system parts are hot tested or the engine is run-in prior to it being stored and/or assembled in the final vehicle or engine configuration. The invention covers a concentrate as well as a dilute solution made from the concentrate. The synergistic combination of inorganic ammonium derivatives with monocarboxylic or dicarboxylic acids has proven to dramatically increase the protection time, thus enabling storage for a longer period when the engine parts are shipped or stored prior to assembling. When silicate is added to the above formulation, excellent protection from liquid and vapor corrosion is provided on ferrous liner alloys as well as on aluminum alloys. Aluminum alloys are used in engine heads.Type: ApplicationFiled: April 22, 2009Publication date: October 28, 2010Inventors: Jurgen P. De Kimpe, Serge S. Lievens
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Patent number: 7811670Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: August 13, 2007Date of Patent: October 12, 2010Assignee: PPG Industries Ohio, Inc.Inventors: Kaliappa G. Ragunathan, John R. Schneider
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Publication number: 20100233471Abstract: The anti-corrosion coating material contains corrosion inhibiting inorganic constituents, or a combination of inorganic and organic corrosion inhibiting constituents, suspended in a polymeric resin. The corrosion resistant composition includes a salt of inorganic constituents, and alkaline polyamine fatty acid salt (PFAS) as a corrosion inhibitor, suspended in a polymeric resin remainder. The coating material may be applied to metal parts but not limited to aircraft fasteners, such as aircraft fastener parts, including nuts and bolts, screws, rivets, and sleeved systems.Type: ApplicationFiled: August 5, 2009Publication date: September 16, 2010Inventors: Jeffrey Hayes, Johan Stephan
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Patent number: 7745010Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: March 20, 2006Date of Patent: June 29, 2010Assignee: PRC Desoto International, Inc.Inventor: John R. Schneider
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Publication number: 20100081001Abstract: The present invention relates to a polymerizable composition and to a method for coating metal surfaces, in particular steel, galvanized and alloy-galvanized steel, and also aluminum and alloys thereof, as protection against corrosion. The polymerizable composition preferably contains less than 10% by weight of portions which are not incorporated in the cured coating. In a further aspect, the invention relates to the use of the claimed composition for coating workpieces consisting of the above-mentioned metals, particularly metal surfaces in blanking lines (coil coating). The present invention therefore also comprises the use of metal surfaces, coated according to the invention, for the production of “white goods” (household appliances), automobile bodies, electronic component housings, and for the building trade and the transport sector.Type: ApplicationFiled: September 23, 2009Publication date: April 1, 2010Applicant: Henkel AG & CO. KGaAInventors: Jörg Sander, Jürgen Stodt, Holger Endres
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Patent number: 7462654Abstract: The invention provides an anticorrosive surface coating composition comprising a resin system, and a hydrophobic metal oxide. The hydrophobic metal oxide is characterized by being produced via a wet process and having a surface area of at least about 350 m2/g. The invention also provides a method of producing such an anticorrosive coating composition. The invention further provides a substrate having a surface coated with the surface coating composition of the invention, as well as a method of imparting corrosion resistance to a surface of a substrate.Type: GrantFiled: March 8, 2002Date of Patent: December 9, 2008Assignee: Cabot CorporationInventor: Rex J. Field
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Patent number: 7371459Abstract: An electrical device includes two electrodes and a conductive polymer layer, containing a mixture of a polymer and a conductive filler, separating the electrodes. A oxygen barrier material containing a thermosetting polymer component is present on the exposed surface of the conductive polymer layer that is not in contact with the laminar electrodes. The oxygen barrier material may be a polyamine-polyepoxide material, and may provide for acceptable barrier properties over a wide range of humidity levels.Type: GrantFiled: September 3, 2004Date of Patent: May 13, 2008Assignee: Tyco Electronics CorporationInventor: Matthew P. Galla
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Patent number: 7309528Abstract: A protective coating composition comprising a silicate, such as an organosilicate, an organosilicate polymer and colloidal silica and an organic titanate, preferably a titanate chelate or a titanate ester in a suitable organic solvent. The composition is free from metal particles.Type: GrantFiled: April 23, 2002Date of Patent: December 18, 2007Assignee: Dow Corning GmbHInventors: Vittorio Clerici, Alexandra Wilhelmi
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Patent number: 7270775Abstract: An effective corrosion inhibiting polymer composition including an interceptor for an acid gas combined with known VCI ingredients produces a more effective VCI than the prior art composition. The composition in macrogranular form may be held in a receptacle which is sealed in a container in which ferrous articles are protected. When the composition, greatly diluted is injection- or blow-molded or extruded as film which contains more than 100 ppm of a 2,4-6-tri-substituted phenol and uniformly dispersed small amounts of solid micron-sized particles of interceptor, an alkali metal nitrite and a solid adjuvant to aid in dispersing the solid particles, the film is transparent and has a smooth surface.Type: GrantFiled: October 1, 2003Date of Patent: September 18, 2007Assignee: Northern Technologies International Corp.Inventors: Donald Alfons Kubik, Boris Varshal, Efim Ya Lyublinski, Barbara Ann Nygaard
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Patent number: 7261839Abstract: An effective tarnish inhibiting (“TI”) polymer composition including a scavenger for hydrogen sulfide optionally in the presence of an acid gas such as sulfur dioxide, provides excellent protection against tarnishing of the lustrous surfaces of a silver object. When the composition is thermoformed into a box-like container or extruded as film which contains uniformly dispersed solid micron-sized particles of the scavenger chosen from zinc oxide and a silicate of an alkali metal in an amount no greater than 5% by weight of the polymer, it is transparent so that the condition of the stored silver may be assessed. A solid inert adjuvant may be added. All solid particles in the material have a primary particle size smaller than 53 ?m which makes it possible to obtain the uniform dispersion. A silver object may be wrapped in the film, or stored in a sealed box so that the solid particles in the polymer are not coated on the surfaces of the silver object.Type: GrantFiled: October 1, 2003Date of Patent: August 28, 2007Assignee: Northern Technologies International Corp.Inventors: Donald Alfons Kubik, Boris Varshal, Efim Ya. Lyublinski, Barbara Ann Nygaard
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Patent number: 6858160Abstract: The disclosure relates to improved gel/grease compositions as well as grease compositions capable of imparting improved corrosion resistance. The grease includes a silica/silicate mixture that can imparts a relatively high pH and corrosion resistant properties to the grease.Type: GrantFiled: September 21, 2001Date of Patent: February 22, 2005Assignee: Elisha Holding LLCInventors: Robert L. Heimann, Nancy M. Heimann, William M. Dalton, Donald W. Taylor, Todd W. Scrivens
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Publication number: 20040255819Abstract: A corrosion-inhibiting composition for application to a metal substrate, such as aluminum or steel, and in connection with a paint, and the synthesis of the composition. The active inhibitor constituent of the composition can be selected from the group consisting of 2,5-dimercapto-1,3,4 thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4-thiadiazole, trithiocyanuric acid (TMT), and derivatives of DMTD and TMT, including various N- or S- and N,N-,S- and N-,S-substituted derivatives of DMTD, including salts of DMTD of the general formula: M(DMTD)n, where n=1, 2 or 3, and M is a metal cation and preferably M=Zn(II), Bi(III), Co(II), Ni(II), Cd(II), Pb(II), Ag(I), Sb(III), Cu(II), Li(I), Ca(II), Sr(II), Mg(II), La(III), Ce(III), Pr(III), A1(III) or Zr(IV). DMTD, TMT, and their derivatives may also be combined with phosphates, molybdates, borates, silicates, tungstates, phosphotungstates, phosphomolybdates, cyanamides, carbonates, SiO2 and mixtures thereof.Type: ApplicationFiled: February 23, 2004Publication date: December 23, 2004Applicant: Wayne Pigment Corp.Inventor: John Sinko
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Patent number: 6811747Abstract: The present invention relates to water treatment chemical formulations, and more particularly to chemical formulations used to treat water containing halogens as a sanitizing agent. The water treatment chemical formulations contain cyanuric acid and an alkali metal molybdate or silicate as an anticorrosion agent.Type: GrantFiled: June 4, 2003Date of Patent: November 2, 2004Assignee: Bioquest, LLCInventor: Michael A. Silveri
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Publication number: 20040167257Abstract: Disclosed are nanocomposites made of guest metal nanoparticles and metal oxide sols made by mixing at least one metal alkoxide, at least one organosilane, at least one boron oxide compound, and a liquid. Also disclosed are dielectric composites containing a dielectric material such as a polymer and the nanocomposites.Type: ApplicationFiled: April 30, 2003Publication date: August 26, 2004Inventor: Hong-Son Ryang
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Publication number: 20040069972Abstract: An effective corrosion inhibiting polymer composition including an interceptor for an acid gas combined with known VCI ingredients produces a more effective VCI than the prior art composition. The composition in macrogranular form may be held in a receptacle which is sealed in a container in which ferrous articles are protected. When the composition, greatly diluted is injection- or blow-molded or extruded as film which contains more than 100 ppm of a 2,4-6-tri-substituted phenol and uniformly dispersed small amounts of solid micron-sized particles of interceptor, an alkali metal nitrite and a solid adjuvant to aid in dispersing the solid particles, the film is transparent and has a smooth surface.Type: ApplicationFiled: October 1, 2003Publication date: April 15, 2004Inventors: Donald Alfons Kubik, Boris Varshal, Efim Ya Lyublinski, Barbara Ann Nygaard
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Patent number: 6677389Abstract: Provided is a cationized silica dispersion prepared by dispersing dry processed silica and a cationic resin in a polar solvent, wherein a concentration of dissolved silicic acid at 25° C. is 200 ppm or less. This cationized silica dispersion does not substantially form coagulated matters when blended with a binder and therefore can advantageously be used for producing a coating composition such as a coating composition for forming a gas barrier layer, a corrosion preventive coating composition and a coating composition for ink jet recording paper.Type: GrantFiled: April 3, 2002Date of Patent: January 13, 2004Assignee: Tokuyama CorporationInventors: Kentaro Fukuda, Kenji Fukunaga, Hiroya Yamashita
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Patent number: 6617041Abstract: The disclosure relates to temporary corrosion resistant coatings and films upon metal substrates, e.g., metal tools and dies. The temporary coatings and films will not adversely chemically alter the surface of the underlying substrate. The coatings/films comprise a mixture of at least one of an acrylic, water, an oil, silica, at least one silicate, surfactants and optionally one or more buffering materials and waxes.Type: GrantFiled: December 10, 2001Date of Patent: September 9, 2003Assignee: Elisha Holding LLCInventors: John Hahn, Robert L. Heimann, Daniel I. Crosby
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Patent number: 6565671Abstract: The present invention relates to a surface-treated steel sheet coated with a chromate layer having excellent corrosion resistance, fuel resistance and seam weldability, and a chromate solution used for preparing the surface-treated steel sheet. Specifically, the chromate solution of the present invention comprises (a) a main solution prepared by adding to a chrome solution having 0.4 to 0.8 of trivalent chrome composition and 7 to 50 g/l of dissolved chrome, on the basis of the chrome in the chrome solution, 50 to 80 w % of phosphate, 20 to 40 w % of fluoric acid, 300 to 2000 w % of colloidal silica, 5 to 15 w % of sulfuric acid, and 25 to 40 w % of sodium phosphate, and (b) a hardener solution containing added epoxy silane or glycidyl silane of 2 to 10 w % on the basis of total hardener solution, the pH of which is controlled between 2 and 3, wherein 10 to 60 w % of the hardener solution being added to the main solution.Type: GrantFiled: July 20, 2001Date of Patent: May 20, 2003Assignee: Pohang Iron & Steel Co., Ltd.Inventors: Jae-Ryung Lee, Sam-Kyu Chang, Sang-Geol Noh, Soo-Hyoun Cho
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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: 6503420Abstract: Anti-corrosion solutions useful for air dehumidification processes are disclosed. Phosphonate corrosion inhibiting agents or mixtures thereof can be added to halide solutions of alkali metals, alkaline earth metals, or mixtures thereof, to minimize corrosion of the dehumidifier system.Type: GrantFiled: July 28, 1999Date of Patent: January 7, 2003Assignee: FMC CorporationInventor: Shyam Kumar Verma
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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: 6399021Abstract: A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products, and novel combinations thereof with metals, for preventing or retarding corrosion, as well as methods for applying the buffered compositions to metal products, such that corrosion protection of the products is achieved. The methods include an in-situ application to existing structures with metal reinforcement as well as applications to metal products during manufacture. Generally, the compositions may be in various forms and comprise one or more layers, at least one of which includes a water repellent but water vapor permeable carrier component and one or more pH buffer components. The buffer is selected to produce a passivating pH at the surface of the metal.Type: GrantFiled: June 30, 2000Date of Patent: June 4, 2002Assignee: Elisha Technologies Co LLCInventors: Robert L. Heimann, William M. Dalton, David R. Webb, Nancy M. McGowan
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Patent number: 6316392Abstract: The disclosure relates to improved gel/grease compositions as well as grease compositions capable of imparting improved corrosion resistance. The grease includes a silica/silicate mixture that can imparts a relatively high pH and corrosion resistant properties to the grease.Type: GrantFiled: August 6, 1999Date of Patent: November 13, 2001Assignee: Elisha Technologies Co LLCInventors: Robert L. Heimann, Nancy M. McGowan, William M. Dalton, Daniel I. Crosby, Donald W. Taylor
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Patent number: 6309478Abstract: The disclosure relates to aqueous-based gels and, in some cases, usage of such gels to impart corrosion resistance to steel and/or zinc containing surfaces, e.g., galvanized steel. The gel comprises water, at least one thickener, at least one silica containing material and an optional surfactant.Type: GrantFiled: September 10, 1999Date of Patent: October 30, 2001Assignee: Elisha Technologies Co LLCInventors: Nancy M. McGowan, John Hahn
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Publication number: 20010032966Abstract: The task of the invention is to provide an anti-corrosion layer for sheet metals, which exhibits corrosion inhibiting characteristics even after prolonged exposure to air and humidity.Type: ApplicationFiled: March 15, 2001Publication date: October 25, 2001Inventor: Christina Schmidt
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Publication number: 20010024729Abstract: The disclosure relates to the forming mineralized coatings on metal surfaces and to methods of forming such coatings. The coating can include a wide range of compounds and normally at least a portion of the coating corresponds to an amorphous phase. The coating and method are particularly usefull in providing a corrosion resistant coating or film upon a metallic surface. This aspect of the disclosure involves the formation of a corrosion resistant “mineralized” layer of tailored composition upon a metal substrate.Type: ApplicationFiled: February 20, 2001Publication date: September 27, 2001Inventors: Robert L. Heimann, Nancy M. Mcgowan, William M. Dalton, David R. Webb, David M. Price
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Patent number: 6294262Abstract: Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO3 and an inorganic acid with phosphorous acid as a reducing agent until substantially 100% of hexavalent chromium contained in the starting solution is reduced.Type: GrantFiled: April 5, 1999Date of Patent: September 25, 2001Assignee: Nippon Paint Co., Ltd.Inventor: Takayuki Fukuoka
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Patent number: 6194033Abstract: Disclosed is a rust-preventive composition comprising (A) an aromatic compound i) containing a group selected from the group consisting of an —N═N— group, a >C═N— group, a >C═O group and an —N═O group and ii) having an absorption band in a visible region of from 530 nm to 750 nm; (B) a colloidal silica; (C) a film-forming polymeric compound containing in one molecule a group selected from the group consisting of an —OH group and a —COOH group; and (D) an organic solvent. This composition, having been coated on metal surfaces, provides a sufficient corrosion resistance without making any chromating treatment.Type: GrantFiled: December 10, 1999Date of Patent: February 27, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Mikio Watanabe
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Patent number: 6190779Abstract: The disclosure relates to the forming mineralized coatings on metal surfaces and to methods of forming such coatings. The coating can include a wide range of compounds and normally at least a portion of the coating corresponds to an amorphous phase. The coating and method are particularly useful in providing a corrosion resistant coating or film upon a metallic surface. This aspect of the disclosure involves the formation of a corrosion resistant “mineralized” layer of tailored composition upon a metal substrate.Type: GrantFiled: January 30, 1998Date of Patent: February 20, 2001Assignee: Elisha Technologies Co LLCInventors: Robert L. Heimann, Nancy M. McGowan, William M. Dalton, David R. Webb, David L. Price
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Patent number: 6174461Abstract: A concrete sealer material is provided containing a corrosion inhibitor which is free to migrate upon leeching from the concrete sealer. The inhibitor retards the rate of corrosion of reinforcements contained within the concrete, including metallic mesh, grid, rebar, and other metallic articles utilized for reinforcement. The sealer material is preferably a film forming component of silicate or silane modified siloxanes. The corrosion inhibitor is preferably an amine salt, an amino alcohol, alkalized salt of glucoheptonates, or, calcium nitrite and mixtures thereof. A compatibility enhancer of an aminoalkyl silane can be added to the blend.Type: GrantFiled: June 29, 1999Date of Patent: January 16, 2001Assignee: Cortec CorporationInventors: Boris A. Miksic, Charles M. Suchy, Margarita Kharshan