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8066902 |
Methods for inhibiting corrosion in brazed metal surfaces and coolants and additives for use therein
Disclosed are coolants comprising brazed metal corrosion inhibitors. In one embodiment, the disclosed brazed metal corrosion inhibitor will comprise a polycarboxylic acid functional compound having...
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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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7919122 |
Composition for production of a sterilizer and a process for producing organic peracid
The invention provides a composition for production of a sterilizer having a water content of 1 to 25% by weight and comprising (A) an ester of a polyhydric alcohol and an organic acid having a...
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7837931 |
Method of using solubilized transition metal oxides in well operations
A corrosion inhibitor package containing an acetylenic amine or acetylenic alcohol enables a sulfur-free method for protecting metal tubulars and equipment. The package has particular applicability...
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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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7699991 |
Apparatus and process for water conditioning
A conditioning process and equipment are provided for removing hardness from water circulated in a system. A sidestream from such system is routed to a reaction chamber and back to the system. A...
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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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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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7208118 |
Process for the solvent-free preparation of ethercarboxylic acids having a low residual salt content
The invention provides a process for preparing compounds of the formula (1) where A is C2- to C4-alkylene, B is C1- to C4-alkylene, n is a number from 1 to 100, and R is C1- to C30-alkyl, C2- to...
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7205438 |
Solvent recovery blends from diene production
A diene production stream comprising a solvent recovery blend from diene production comprising one or more fouling agent, one or more extractive distillation solvent, and from about 1 ppm to about...
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7090780 |
Bactericide for use in water treatment, method for water treatment and apparatus for water treatment
A water-treating microbicide, containing an inorganic acid and a corrosion inhibitor, and further containing a carboxylic acid having 8 or less carbon atoms or any of alkali metal salts thereof....
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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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6811747 |
Corrosion inhibitor
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...
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6680001 |
Protective composition for pressure washer and applicator
A composition for lubricating, preventing mineral deposit buildup, and expelling any standing water from the internal parts of a pressure washer, as well as a pressurized container for applying...
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6583091 |
Method for inhibiting corrosion using 4-sulfophthalic acid
The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective...
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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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6475431 |
Corrosion inhibitors with low environmental toxicity
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...
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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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6458320 |
Galvanized metal corrosion inhibitor
This invention relates to a galvanized metal, typically steel, corrosion inhibitor concentrate comprising (a) an amine salt of a fatty acid or an amine salt of a derivative of a fatty acid, (b)...
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6447717 |
Composition and method for inhibition of metal corrosion
Carbon dioxide induced corrosion of ferrous metals in aqueous systems is inhibited by treatment of the aqueous system with corrosion inhibiting amino thiol and amino disulfide compounds....
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6436344 |
Method of inactivating pathogens
The present invention introduces a class of compounds, 2-substituted carbonyl compounds, that are useful as disinfecting agents, and particularly useful in methods for the disinfection of...
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6419850 |
System and composition for decontaminating fluids
An apparatus and composition of matter for treating tap or distilled water prior to use in irrigation during surgical and medical operations.
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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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6391256 |
Dissolved oxygen removal method using activated carbon fiber and apparatus thereof
A dissolved oxygen removal method using an activated carbon fiber catalyst thereof which includes the steps of a reducing agent injection step for injecting a reducing agent into the water, a...
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6391257 |
Antifreeze compositions comprising carboxylic acid and cyclohexenoic acid
This invention relates to antifreeze compositions comprising a mixture of organic acid corrosion inhibitors. The compositions comprise (a) from about 90% to about 99.89% by weight of a liquid...
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6277302 |
Inhibition of metal corrosion
A composition and method is disclosed for inhibiting the corrosion of metals in contact with an aqueous system capable of corroding the metal. The inventive composition contains a substantially...
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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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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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6071436 |
Corrosion inhibitors for cement compositions
Compositions and methods relating to cementitious compositions are provided. The addition of an amidoamine that is the reaction product of polyalkylenepolyamines and short-chain alkanedioic acids...
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6063334 |
Sulfur based corrosion inhibitor
The present disclosure is concerned with inhibiting corrosion in metal, usually steel, equipment which is exposed to oil field production flow including gases, oil, water, and sand. It is injected...
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6022401 |
Biodegradable modified polyaspartic polymers for corrosion and scale control
Several copolymers of aspartic acid and another monomer provide effective mild steel corrosion inhibitors and scale formation inhibitors under oil field conditions. The copolymers are polymers of...
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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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5989440 |
Method of using oxygen scavenger and removing oxygen from water
An oxygen scavenger characterized in that the effective component thereof consists of a heterocyclic compound with N--N bond in a ring thereof An oxygen scavenger characterized in that the...
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5985152 |
Method of preventing corrosion in a water system
Ca ion is removed by a cation exchange resin and silica and corrosive ions are removed by an anion exchange resin. Even after the anion exchange resin reaches the silica break through point or...
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5976414 |
Non-Phosphorus corrosion inhibitor program for air washer system
The prevention of corrosion on the surfaces of airwasher systems and particularly systems containing low levels of hardness is controlled utilizing a corrosion inhibiting amount of a composition...
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5891364 |
Corrosion inhibitors for cement compositions
Compositions and methods relating to cementitious compositions are provided. The addition of an amidoamine that is the reaction product of polyalkylenepolyamines and short-chain alkanedioic acids...
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5871691 |
Inhibition of corrosion in aqueous systems
A method and compounds for inhibiting and controlling corrosion is disclosed. The method is particularly effective at inhibiting or preventing corrosion of ferrous-based metals in contact with...
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5866013 |
Method for inhibiting scale and controlling corrosion in cooling water systems
A method and composition for simultaneously controlling the deposition of scale and the formation of corrosion in a cooling water system comprising adding to the system a combination of (a) a water...
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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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5853619 |
Low toxic corrosion inhibitor
A low toxic corrosion inhibitor comprises (A) mercaptocarboxylic acid having from 2 to 6 carbon atoms, and (B) a polyamine/fatty acid/carboxylic acid adduct. The preferred combination of (A) and...
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5820763 |
Method for inhibiting corrosion in water systems
The water of a water system is treated to inhibit corrosion of metal components by passage through an anion exchanger preloaded with corrosion-inhibiting anions. A low molecular weight polymer is...
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5795372 |
Nitrogen-free corrosion inhibitors having a good buffering effect
Nitrogen-free aqueous anticorrosion composition containing a) a carboxylic acid having 6 to 44 carbon atoms; and b) aromatic hydroxy compounds having a pKa value in the range of 7.0 to 11 for the...
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5785896 |
Mixture for inhibition of corrosion of metals
A method of combating corrosion of a metal which comprises contacting such metal with a composition containing polyamino acids, their salts and their anhydrides, together with at least one...
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5779938 |
Compositions and methods for inhibiting corrosion
The invention is an effective, easy to produce, and economical corrosion inhibitor which can be used in a variety of environments. The corrosion inhibitor of the present invention is the salt of...
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5779939 |
Corrosion preventing composition comprising lactobionic acid amides
Corrosion prevention compositions which contain lactobionic acid N-alkylamides, and further having a pH below 9.0, are described. In particular, lactobionic acid N-alkylamides in which the...
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5750037 |
Use of tartronic acid as an oxygen scavenger
The invention is a method for removing dissolved oxygen from alkaline water which comprises adding to alkaline water containing dissolved oxygen an effective oxygen-scavenging amount of a...
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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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5750053 |
Corrosion inhibitor for reducing corrosion in metallic concrete reinforcements
A corrosion inhibitor formulation for use in reinforced concrete structures, the inhibitor reducing the rate of corrosion in metallic reinforcing rods placed within the structures. The formulation...
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