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8025840 |
Compositions and methods for inhibiting corrosion in aqueous media
Methods and compositions are provided for corrosion inhibition treatment of aqueous systems such as cooling water systems. The methods include conjoint use of a polyvalent metal ion, such as Al or...
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8021607 |
Methods for inhibiting corrosion in aqueous media
Methods are provided to inhibit corrosion of metals in contact with aqueous systems such as cooling water systems. In accordance with the methods, a hydroxyacid compound and orthophosphates are...
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7910024 |
Corrosion inhibition compositions and methods for using the same
Compositions and methods are described for inhibiting corrosion of corrodible metals present in contact with water in cooling water and other water storage systems. The compositions include...
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7803278 |
Method for corrosion and scale inhibition
The present invention provides a formulation for use in the treatment of corrosion and metal sulphide scale deposits in aqueous systems, said formulation comprising a tetrakis (hydroxyorgano)...
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7780859 |
Uncoupling agents
The invention provides the use of a water-soluble biocide as an uncoupling agent at an effective amount to control bacterial biomass in an aqueous system. The invention also provides a method for...
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7744775 |
Heat transfer fluid compositions for cooling systems containing magnesium or magnesium alloys
In one embodiment, a corrosion inhibiting composition is formed by combining: (a) an inorganic phosphate; (b) a water soluble polyelectrolyte polymer dispersant; (c) a tri or tetracarboxylic acid;...
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7632458 |
Corrosion inhibitor treatment for closed loop systems
The present invention provides an effective method of inhibiting corrosion on metallic surfaces in contact with a fluid contained in a closed loop industrial fluid system, which comprises adding to...
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7585460 |
Method for inhibiting the biological acidification of water in contact with materials containing sulfur
The invention relates to a method for inhibiting the biological acidification of water which is in contact with materials containing sulfur in reduced form or with elemental sulfur, susceptible to...
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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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7404902 |
Method for treating water
A composition for treating water contained in enclosures, such as swimming pools, spas, whirlpool tubs and cooling towers, which includes at least one boron compound, cyanuric acid, at least one...
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7252769 |
Use of cerium salts to inhibit manganese deposition in water systems
Methods to control manganese deposition in an aqueous system, which include introducing a cerium-containing composition, and optionally another deposit control agent, to the aqueous system, are...
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7179384 |
Control of cooling water system using rate of consumption of fluorescent polymer
A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water...
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6926836 |
Treatment of iron sulphide deposits
Treating a water system containing or in contact with a metal sulphide scale to inhibit, prevent, reduce, dissolve or disperse iron sulphide deposits. A solution of tris(hydroxyorgano)phosphines...
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6846452 |
Scale inhibitor for an aqueous system
This invention relates to a composition and a method for inhibiting the formation of scale, particularly complex scale, in an aqueous system where more than one type of scale is present. The scale...
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6846419 |
Phosphonamide and phosphonamide blend compositions and method to treat water
The invention is a water treatment composition comprising at least one phosphonamide and blends thereof and a method to treat water. As phosphonamides are generally odorless, and typically solids,...
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6840989 |
Corrosion inhibitor for bathing water containing sodium chloride and magnesium sulfate
The present invention relates to a corrosion inhibitor for bathing waters which contain chlorides and sulfates, in particular sodium chloride and magnesium sulfate, that reduces the corrosion...
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6808680 |
Method of preventing or stopping sulfuric corrosion of metals
A method is disclosed for prevention or stoppage of sulfidation or sulfuric corrosion of metal surfaces in contact with fluids including sulfiding compounds, where the method involves the addition...
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6572789 |
Corrosion inhibitors for aqueous systems
A method of inhibiting corrosion in aqueous systems comprising adding to the system a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts and a method of preparing a...
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6533958 |
System for controlling microbial fouling
A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline...
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6468470 |
Galvanized metal corrosion inhibitor
A white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more...
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6464900 |
Scale corrosion inhibiting composition
This invention relates to corrosion inhibiting compositions for aqueous systems comprising (a) polyaspartic acid or salts therefore, and (b) a water soluble phosphonated oligomer. The compositions...
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6416712 |
Corrosion inhibition method suitable for use in potable water
Effective corrosion inhibitors having minimal organic content, particularly suitable for use in municipal drinking water systems, are described. The corrosion inhibiting additive is a stannous salt...
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6403028 |
All-organic corrosion inhibitor composition and uses thereof
This invention relates to an all-organic corrosion inhibiting composition comprising (a) 6,6,6-(1,3,5-triazine-2,4,6-triyltriimino) tris hexanoic acid; and (b) a water-soluble phosphonated oligomer...
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6395225 |
Sulphydryl acid and imidazoline salts as inhibitors of carbon corrosion of iron and ferrous metals
The invention concerns inhibitor compositions based on fatty sulphydryl acid and poly(ethyleneamino)imidazoline salts for considerably reducing the corrosive effect of carbon brine on iron and...
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6383414 |
Use of corrosion inhibiting compounds to inhibit corrosion of metal plugs in chemical-mechanical polishing
A process of inhibiting a corrosion of metal plugs formed in integrated circuits is described. The corrosion inhibiting process includes providing a partially fabricated integrated circuit surface...
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6379612 |
Scale inhibitors
The present invention provides compositions of oil-soluble inhibitors suitable for use in inhibiting oil field scale formation. The compositions comprise an acid form of a known scale inhibitor and...
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6337047 |
Process for dispersing iron oxide in steam generating boilers
This invention relates to a process for dispersing corrosion products, specifically iron oxide, in steam generating boilers. Improved dispersion is achieved by adding a dispersant to a feedpoint of...
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6183649 |
Method for treating water circulating systems
Water-circulating systems are treated with an aqueous, alkaline composition comprising I) an organo-phosphorus chelating agent, II) an acrylate homopolymer, III) a salt of an acrylic copolymer, a...
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6180056 |
Method and compositions for minimizing biological and colloidal fouling
A composition for minimizing biological and/or colloidal fouling is described, which includes an anionic antiscalant and a cationically charged biocide. Further, a method of controlling fouling is...
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6177047 |
Water-treatment composition and method of use
The invention herein relates to water-treatment technology, namely compositions comprising a phosphonic acid, a zinc salt and a metal salt. A preferred metal salt is aluminum tri-chloride whereas...
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6090345 |
Phosphorus-containing compounds based on 1-hydroxypropane-1, 3-diphosphonic acid
The present invention relates to phosphorus-containing compounds based on 1-hydroxypropane-1,3-diphosphonic acid and to the acid itself of general formula (I) ##STR1## in which M1, M2, M3, M4 and...
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6083403 |
Stabilized substituted aminomethane-1, 1-diphosphonic acid n-oxides and use thereof in preventing scale and corrosion
This invention relates to novel organic phosphonate compounds which can be used as water treatment agents. More specifically, this invention relates to 1,1 -diphosphonic acid N-oxides and...
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6001264 |
Water-treating agent and method for treating water
A water-treating agent comprising a ternary copolymer of conjugated dienesulfonic acid/(meth)acrylic acid/2-hydroxyethyl (meth)acrylate, or a ternary copolymer of conjugated dienesulfonic...
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RE36291 |
Reaction product of nitrogen bases and phosphate esters as corrosion inhibitors
A method for inhibiting corrosion of metal surfaces in an aqueous medium, comprising incorporating into the medium a corrosion inhibitor in an amount sufficient to inhibit corrosion, the corrosion...
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5863415 |
Control of naphthenic acid corrosion with thiophosporus compounds
Corrosion of iron-containing metal surfaces in a hydrocarbon fluid having a temperature of from about 175° C. to about 400° C. and containing a corrosive amount of naphthenic acid is inhibited by a...
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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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5824239 |
Method to remove biguanide from an aqueous source
A method for removing biguanide from aqueous sources, such as swimming pools, is disclosed. The method includes the steps of bringing at least one polymeric metaphosphate into contact with the...
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5800732 |
All-in-one treatment agent for cooling water
An all-in-one cooling water treatment composition includes a high concentration of peroxide, preferably hydrogen peroxide, in combination with a polyhydric alcohol and a phosphonate to stabilize...
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5788857 |
Hydroxyimino alkylene phosphonic acids for corrosion and scale inhibition in aqueous systems
This invention relates to the use of iminoalkylenephosphonic acids to prevent corrosion, including both localized corrosion and general corrosion on iron based metal surfaces in contact with a...
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5785895 |
Biodegradable corrosion inhibitors of low toxicity
A method for inhibiting corrosion in an aqueous medium is disclosed. The method comprises incorporating into the medium an amount of a water-soluble corrosion inhibitor sufficient to inhibit...
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5772893 |
Ether diphosphonate scale inhibitors
The invention is a method for the prevention of scale formation on metal or other surfaces in contact with scale-forming industrial water with an effective scale-inhibiting amount of an ether...
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5750070 |
Use of biodegradable polymers in preventing corrosion and scale build-up
A biodegradable corrosion inhibitor, scale inhibitor and dispersant is provided. The inhibitor comprises one or more polymers from a family of poly(amino acid) polymers that include hydroxamic...
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5746973 |
Method for reducing odorant depletion
Odorant depletion is reduced by passivating the internal surface of LP-gas transportation and storage vessels by the addition of passivating agents comprising mixtures of corrosion inhibitors such...
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5731032 |
Method of use of a coating compound for liquid-fertilizer holding vessels, and liquid fertilizers
In one aspect, am anti-corrosion treatment method of reducing internal corrosion of a liquid nitrogen fertilizer holding vessel comprising providing at least one quaternary-amine-comprising...
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5707529 |
Method for controlling scale in an aqueous system using a synergistic combination
A method for inhibiting the formation, deposition and adherence of scale forming salts including calcium carbonate and calcium phosphate in an aqueous system having a pH of at least 8.5 and a...
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5702768 |
Method of use of a coating compound in vessels, and a coating compound for vessels
The invention encompasses methods of preventing corrosion of vessel sidewalls. In one aspect, the invention includes an anti-corrosion treatment method of reducing internal corrosion of an ammonium...
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5693290 |
Inhibition of corrosion in aqueous systems
A method and composition for controlling corrosion of metals in contact with an aqueous system is disclosed, which method includes introducing into the aqueous system a sufficient amount of a...
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5683588 |
Stabilization of catalyzed aqueous sulfite and bisulfite ion solutions
A method for stabilizing an aqueous solution containing sulfite or bisulfite ions and a water-soluble metal catalyst. The method comprises incorporating a stabilizing amount of a alpha substituted...
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5670055 |
Use of the linear alkylbenzene sulfonate as a biofouling control agent
The invention comprises a method for dispersing biofilms caused by the growth of slime-forming bacteria and other microorganisms in industrial process water. The method comprises adding an...
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5662803 |
Stabilizers for additives in aqueous systems containing ozone
The invention is a method for increasing the effectiveness of water-soluble polymeric additives or water-soluble phosphonates in the recirculating water of processing equipment wherein said water...
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