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7517493 |
Cooling water corrosion inhibition method
Methods for inhibiting corrosion in aqueous evaporative systems where soluble silica (SiO 2 ) is maintained at residuals between 10 Mg/L and saturation, but more preferably maintained at greater...
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7468158 |
Corrosion inhibitor for protecting metallic materials in strongly alkaline medium
Corrosion inhibitor and method of protecting metallic materials in strongly alkaline medium by means of a corrosion inhibitor, characterized in that it contains an amine containing at least one CH...
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7407623 |
Steam condensate corrosion inhibitor compositions and methods
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...
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7208117 |
Automated process for inhibiting corrosion in an inactive boiler containing an aqueous system
This invention relates to an automated process to inhibit corrosion of the metal surface of an inactive boiler containing water.
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7122148 |
Cooling water scale and corrosion inhibition
A methods of the present invention for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica residuals (SiO 2 ) are maintained in excess of 200 mg/L, and source...
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7001873 |
Decontamination of surfaces contaminated with prion-infected material with oxidizing agent-based formulations
A surface which carries a material which is infected with prions is cleaned with an alkaline cleaning solution to remove as much proteinaceous material as possible from the surface. The cleaning...
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6998092 |
Cooling water scale and corrosion inhibition
A methods for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica (SiO 2 ) can be maintained at residuals below 200 mg/L, but more preferably maintained at...
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6881244 |
Method and device for preventing deposits in steam systems
The present invention relates to a method for preventing the deposition of contaminants in steam systems. In a method of this type, deposits are prevented in a simple and economic manner by...
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6695897 |
Corrosion resistant system for performance drilling fluids utilizing formate brine
A corrosion inhibited formulation for drilling compositions consisting essentially of an environmentally friendly corrosion inhibitor blended with an alkali metal formate. The corrosion inhibitor...
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6645400 |
Corrosion control utilizing a hydrogen peroxide donor
The present invention describes an innovative means of inhibiting corrosion of metals which experience active-passive transition in contact with an electrolyte. This invention incorporates hydrogen...
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6632294 |
Corrosion protection of steel in ammonia/water heat pumps
Corrosion of steel surfaces in a heat pump is inhibited by adding a rare earth metal salt to the heat pump's ammonia/water working fluid. In preferred embodiments, the rare earth metal salt...
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6551553 |
Disinfection method
A process is provided for disinfecting articles at temperatures below 5° C. with an aqueous alcoholic salt solution. The process provides a fast reduction of microorganisms at low temperatures...
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6548016 |
Oil soluble hydrogen permeation inhibitor
The present invention provides a composition and method for inhibiting hydrogen permeation in metal refinery equipment comprising incorporating into a product stream handled by said equipment a...
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6464901 |
Halogen resistant copper corrosion inhibitors
Non-halogen substituted, nitrogen containing, aromatic compounds are disclosed which are effective copper corrosion inhibitors in aqueous systems being treated with a halogen biocide. The materials...
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6365101 |
Methods of preventing scaling involving inorganic compositions, and compositions therefor
Method for inhibiting scale deposits in an aqueous system. The method may include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the...
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6355214 |
Methods of preventing scaling involving inorganic compositions, and inorganic compositions therefor
Method for inhibiting scale deposits in an aqueous system. The method may include adding anti-scalant to the aqueous system such that an amount of anti-scalant in the aqueous system is up to about...
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6261346 |
Method for protecting metal surfaces against corrosion in liquid or gaseous media
A process useful for protecting metal surfaces against corrosion in is presented involving: (a) forming a corrosion inhibitor having a compound corresponding to formula (I): ##STR1## where R 1 ,...
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6203718 |
Aqueous ammonia corrosion inhibitor
A corrosion-inhibited working fluid for an aqueous ammonia absorption cycle apparatus is charged with an alkali metal base in the concentration range of 0.0003 to 0.0063 moles per liter of water. A...
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6187227 |
Thiacrown ether compound corrosion inhibitors for alkanolamine units
The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by adding to the alkanolamine solution a corrosion inhibiting amount of a thiacrown...
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6143243 |
Method of inhibiting cavitation-erosion corrosion of aluminum surfaces using carboxylic acid based compositions comprising polymerizable-acid graft polymers
This invention relates to a method of inhibiting the cavitation-erosion corrosion of aluminum surfaces. The method comprises the step of contacting the aluminum surface with a formulation...
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6106770 |
Method for preventing obstruction in aluminum brass pipes in a water flow path
A method for preventing obstruction in aluminum brass pipes in a water flow path, including the steps of continuously supplying iron ions or an iron ion supply compound to water in the water flow...
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6059996 |
Low-viscosity coolant brines having improved corrosion protection
The invention relates to low-viscosity, aqueous coolant brines based on inhibited alkali metal acetates and/or formates having improved corrosion protection, wherein the coolant brines contain 0.2...
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6045719 |
Use of quaternized imidazoles as corrosion inhibitors for non-ferrous metals, and coolant compositions and antifreeze concentrates comprising them
Quaternized imidazoles I ##STR1## in which R 1 and R 3 independently of one another are saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by...
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6042750 |
Composition for inhibiting corrosion in ferrous metal
A composition for inhibiting corrosion of metal is described, wherein the composition comprises at least one tetraalkylammonium halide, at least one alkyldiamine, at least one polyethylene...
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6027687 |
Method for preventing corrosion using a sulfite-based oxygen scavenger, and composition therefor
The invention effectively prevents occurrence of corrosion in water tubes or the like of boilers. The invention provides a method for operating a boiler, including regulating a concentration of...
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5993737 |
Stabilization of water
The invention provides for the treatment of raw water having a pH of 2.5 to 9, an alkalinity of at most 50 mg/l expressed as calcium carbonate, a calcium content of at most 100 mg/l expressed as...
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5958335 |
Method and apparatus for preventing corrosion of exhaust gas treatment systems
A corrosion preventive method and an apparatus for preventing corrosion of stainless steel components in an exhaust gas desulfurizing apparatus of an exhaust gas treatment system comprising the...
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5888954 |
Corrosion inhibitors for silver
A process for inhibiting the corrosion of silver in a dishwashing detergent solution by adding to the solution an inorganic redox-active substance.
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5858798 |
Method and apparatus for detecting amines and ammonia by fluorescence
Primary amines, ammonia, or mixtures thereof can be detected using a reagent comprising from about 650 ppm to about 25 percent by weight of phthalic dicarboxyaldehyde; from about 74 to about 99.88...
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5853490 |
Use of bicarbonates and carbonates in metal cleaning formulations to inhibit flash rusting
Prevention of flash rusting of iron-containing substrates is achieved by contacting the substrates with aqueous solutions containing carbonate and/or bicarbonate salts. The treatment process can be...
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5830383 |
Method for inhibition of oxygen corrosion in aqueous systems by the use of a tannin activated oxygen scavenger
A method of treating an aqueous system is described which comprises incorporating in the system a hydroxylamine derivative of the general formula: ##STR1## wherein each of R 1 , R 2 and R 3 which...
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5811026 |
Corrosion inhibitor for aqueous ammonia absorption system
A method of inhibiting corrosion and the formation of hydrogen and thus improving absorption in an ammonia/water absorption refrigeration, air conditioning or heat pump system by maintaining the...
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5753180 |
Method for inhibiting microbially influenced corrosion
A non-biocidal method for inhibiting microbially influenced corrosion of susceptible metal surfaces having an anaerobic biofilm containing active sulfate-reducing bacteria comprising contacting the...
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5720902 |
Methods and compositions for inhibiting low carbon steel corrosion
Disclosed are methods and compositions for inhibiting the corrosion of low carbon steel in contact with aqueous systems. The composition comprises a silicon compound containing a hydrolyzable...
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5714118 |
Method and composition for inhibiting corrosion
Corrosion of ferrous metal surfaces in an aqueous system, such as a boiler system, is inhibited by adding a first component and a second component, the first component being preferably...
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5708108 |
Water treatment polymer containing poly oxy- (hydroxymethyl)-1,2-ethanediyl!! macromonomers and methods of use thereof
A polymer and method of controlling corrosion and the formation and deposition of scale imparting compounds in water systems is disclosed. The polymer has the general structure: ##STR1## wherein E...
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5686016 |
Oxygen scavenging solutions for reducing corrosion by heat stable amine salts
The formation of amine or glycol degradation products in solutions used to remove acid gases or water from hydrocarbon or inert streams is reduced by adding to the solution an oxygen scavenger in...
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5620653 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Odor control system
An odor control system and method for removing unwanted odorous airborne constituents in which the gas stream is flowed through a compact, boxlike housing having a plurality of sequentially...
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5580462 |
Controlling calcium carbonate and calcium phosphate scale in an aqueous system using a synergistic combination
An aqueous system containing scale forming salts including both calcium carbonate and calcium phosphate and characterized by high pH and high calcite concentrations which further contains a...
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5512243 |
Cyclohexanedione oxygen scavengers
An oxygen scavenger for aqueous mediums is disclosed. The oxygen scavengers comprise cyclohexanediones which, when added to basic aqueous solutions, effectively scavenge oxygen from the aqueous...
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5500185 |
Deoxygenation process
A method for deoxygenating water is provided comprising the steps of (1) adding an oxygen scavenger such as hydrazine, carbohydrazide, diethylhydroxylamine or morpholine to water containing oxygen,...
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5403493 |
Noncorrosive scale inhibitor additive in geothermal wells
An aqueous scale inhibitor product is corrosive to the elongated feed lines of a geothermal well due to the length of such feed lines, extended residence time of the product therein, and/or the...
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5358642 |
Polyether polyamino methylene using phosphonates method for high pH scale control
Polyether polyamino methylene phosphonates possess high calcium tolerance and have been found to give excellent inhibition of the formation, deposition and adherence of scale-forming salts,...
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5342578 |
Corrosion inhibition of ammonia-water absorption chillers
A method of inhibiting corrosion in ammonia-water absorption machines that includes adding to an ammonia-water solution soluble silicon compounds. Examples of these silicon compounds include sodium...
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5330683 |
Method of inhibiting corrosion in brine solutions
An environmentally acceptable and economically appealing method of inhibiting corrosion in brine solution systems wherein an aqueous brine solution is treated with gluconate or sorbitol.
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5302321 |
Anticorrosive method of stream and condenser systems
The corrosion of steam and condenser systems and piping therefor is minimized by the addition of anti-corrosion amounts of Vitamin A or Vitamin E.
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5232745 |
Method of neutralizing acid containing compositions present in an insulation board
Described is a method of neutralizing acid containing compositions present in an insulation board comprising the steps of providing an insulation board containing a leachable acid composition and...
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5230810 |
Corrosion control for wet oxidation systems
A process for controlling corrosion in a wet oxidation system by controlling the operating pH range within the system is described. A pH operating range is selected within which corrosion to the...
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5190723 |
Process for inhibiting corrosion
A process for inhibiting corrosion involves new compositions which comprise an organic material and, a corrosion inhibitor which is a compound having the formula: ##STR1## wherein R 1 and R 2 may...
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5178830 |
Method of cleaning, disinfecting and sterilizing hemodialysis apparatus
A method for cleaning, disinfecting and sterilizing hemodialysis apparatus consisting in mixing a basic composition comprising the chlorite ion with an acid composition comprising lactic acid in a...
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