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7615102 |
Corrosion and gas hydrate inhibitors with an increased biological degradability and a reduced toxicity
The invention relates to the use of compounds of formula (1) as corrosion and gas hydrate inhibitors. In said formula: R 1 and R 2 independently of one another represent C 1 to C 22 alkyl, C 2 ...
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7566687 |
Methods and compositions for removing sulfur from liquid hydrocarbons
Improved desulfurization compositions are provided for removing substantial fractions of sulfur, sulfur complexes, and sulfur compounds from liquid hydrocarbons such as crude oil and fuels. The...
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7381689 |
Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds
A method and an amide composition used therein for inhibiting, retarding, mitigating, reducing, controlling and/or delaying formation of hydrocarbon hydrates or agglomerates of hydrates. The method...
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7297191 |
Biodegradable corrosion inhibitor composition
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...
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7141102 |
Antifreeze solution and rust inhibitor added thereto
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...
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7122112 |
Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil
A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II),
wherein R 5 is C 1 –C 70 difunctional alkyl or C 6 –C 14 difunctional aryl, and R 3 and...
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7118615 |
Biodegradable corrosion inhibitor composition
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...
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7112284 |
Oxygen scavenger and the method for oxygen reduction treatment
Oxygen scavenger which can exhibit excellent oxygen reduction effect in a wide variety of conditions is provided as an alternative volatile oxygen scavenger to hydrazine. The oxygen scavenger...
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7044985 |
Process for pre-treating cellulosic fibers and cellulosic fiber blends
A process and formulation for pre-treating a cellulosic, or cellulosic blend with synthetic fiber, substrate, achieving sufficient clearness and appropriate absorbency prior to dyeing the...
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6982062 |
Corrosion inhibiting composition
This invention relates to a corrosion inhibiting composition comprising (a) an aliphatic amine, (b) an azole selected from the group consisting of (1) tolyltriazole, (2) benzotriazole, and (3)...
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6939483 |
Brine fluids with improved corrosion properties
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...
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6800594 |
Corrosion inhibitor barrier for ferrous and non-ferrous metals
An environmentally friendly corrosion inhibiting formulation for the oil-water interface of pipe lines and oil well drilling systems which is prepared pursuant to a process including the steps of...
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6689908 |
Polyalkoxylated superamides optionally functionalized, use as emulsifiers
The invention concerns polyalkoxylated superamides of the following formulae: [R 1 —CONR 2 —CH 2 CHR 3 —O—CHR 4 —CHR 5 O) m —(CH 2 CH 2 O) n ] 9 p (I); R 1 —CON—[CH 2 CHR 3...
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6620338 |
Composition for inhibition of metal corrosion
Novel corrosion inhibiting compositions comprising a combination of amino thiol or amino disulfide compounds with acidic amino acid polymers inhibit carbon dioxide induced corrosion of ferrous...
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6593278 |
Method for inhibiting corrosion using certain phosphorus and sulfur-free compounds
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...
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6555600 |
Corrosion inhibiting thermoplastic alloys
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...
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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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6540943 |
Method of inhibiting corrosion of metal equipment which is cleaned with an inorganic acid
The corrosion of metal equipment which is cleaned with an inorganic acid is inhibited by treating the equipment with a corrosion inhibitor composition containing at least one quaternary ammonium...
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6521028 |
Low hazard corrosion inhibitors and cleaning solutions using quaternary ammonium salts
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...
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6464899 |
Putty composition containing a vapor phase corrosion inhibitor
Compositions and methods for inhibiting corrosion of metallic surfaces are disclosed. The corrosion-inhibiting compositions are cost efficient, easy to use and can be conveniently removed or...
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6464763 |
Water soluble composition as metal surface coating in the form of dry films proof to atmospheric corrosion
A composition for use in forming a dry film coating on metal surfaces to at least temporarily protect the surfaces from oxidation comprises at least 20% by weight of a combination of at least one...
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6461518 |
Method for inhibiting the formation and deposition of silica scale in water systems
This invention relates to a method for inhibiting the formation and deposition of silica scale in water systems. The method includes treating the water in such water systems with an effective...
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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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6451224 |
Stable free-flowing solid chelants
A stable free-flowing solid chelant composition is produced by the process comprising the steps of: a) adjusting the pH of an aqueous solution of the chelant to a value of from about 1.2 to about...
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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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6379587 |
Inhibition of corrosion in aqueous systems
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...
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6372918 |
Compound for inhibiting corrosion
The invention relates to compounds of the formula 1 R 1 —O—(A—O) x —(CH 2 ) y —R 2 (1) in which R 1 is branched or straight-chain C 4 -C 30 -alkyl, C 4 -C 30 -alkenyl or C 4 -C 30...
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6361833 |
Composition and process for treating metal surfaces
A composition and process for treating metal surfaces that contain at a weight ratio from 1:5,000 to 5,000:1 of at least one metal acetylacetonate selected from the group consisting of Al(C 5 H 7 O...
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6346206 |
Oxygen scavenger and boiler water treatment chemical
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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6338819 |
Combinations of imidazolines and wetting agents as environmentally acceptable corrosion inhibitors
A method and corrosion inhibitor for inhibiting corrosion of metal equipment in an aqueous medium comprising components selected from the group consisting of Skeletonema costatum, fish, other...
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6306201 |
Bivalent iron compounds
This invention relates to a bivalent iron compound comprising a bivalent iron salt, an amino acid and a reducing material. It is known that bivalent iron salts exhibit specific effects in wide...
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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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6200499 |
Compositions for corrosion inhibition of ferrous metals
Compositions comprising certain amino acids such as aspartic acid, when fully ionized at alkaline pH, function effectively as corrosion inhibitors for ferrous metals in the presence of an aqueous...
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6174461 |
Concrete sealers with migrating corrosion inhibitors
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...
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6153106 |
Method for inhibiting the formation and deposition of silica scale in water systems
The present invention relates to a method for inhibiting the formation and deposition of silica scale in water systems. The method includes treating the water in such water systems with an...
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6096244 |
Melamine-polycarboxylic acid amides and their use as anticorrosive agents
The present invention relates to a melamine-polycarboxylic acid amide and its use as a corrosion protection agent. Specifically, a melamine-polycarboxylic acid amide having a particular Formula I...
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6077460 |
Corrosion inhibition
The invention relates to the use of at least one compound of general formula (I), ##STR1## in which R 1 , R 2 and R 3 independently of one another represent a hydrogen atom or an alkyl or alkenyl...
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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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6036888 |
Corrosion inhibitor 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 sulfur...
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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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5961885 |
Solutions and methods for inhibiting corrosion
A corrosion inhibitor comprising a dispersant, an imidazoline, an amide, an alkyl pyridine and a heavy aromatic solvent. The resultant blend effectively inhibits corrosion of flow lines containing...
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5958298 |
Anti-corrosive draining agent and rinsing process
The anti-corrosive draining agent for use in a rinsing process includes a polyoxyalkylene alkyl ether as an essential component. The anti-corrosive draining agent further includes an amine compound...
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5935487 |
Corrosion inhibited calcium chloride solids and brine solutions
The addition of an effective amount of a liquid modified diethanolamide to a calcium chloride composition, which can be a brine solution or a solid, reduces the amount of corrosion of metals by the...
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5916483 |
Additive and a process for inhibiting the corrosion of metals in construction materials and constructions materials containing said additive
Additives are disclosed which inhibit the corrosion of metals in construction materials which contain an inorganic binder. The inventive corrosion inhibitors contain a reaction product of amines...
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5904857 |
4-alkyl and aryl semicarbazides as oxygen scavengers
A method for removing dissolved oxygen from alkaline water containing dissolved oxygen at a temperature greater than 250° F. which comprises the step of: adding to said alkaline water containing...
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5902515 |
Solutions and methods for inhibiting corrosion
A corrosion inhibitor comprising a dispersant, an imidazoline, an amide, an alkyl pyridine and a heavy aromatic solvent. The resultant blend effectively inhibits corrosion of flow lines containing...
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5891919 |
Denatonium capsaicinate and methods of producing the same
A new compound, Denatonium Capsaicinate, and a method of producing the same are disclosed. Denatonium Capsaicinate provides an enhanced bitter and/or spicy, pungent flavor and may be used as an...
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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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5891225 |
Method for applying halide brines to surfaces
A method for applying halide brine to surfaces requiring protection against freeze conditions, inhibition of snow and ice accumulating, deicing or freeze retardation, for example, or dust control...
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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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