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8158561 |
Scale and corrosion inhibitors for high temperature and pressure conditions
The present invention relates to a method for inhibiting scale and corrosion in aqueous systems, for example, under high temperature and pressure conditions such as temperatures up to 250° C. ...
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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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7820076 |
Oleaginous corrosion and mildew-inhibiting composition
The invention relates to an oleaginous mildew and corrosion-inhibiting composition, and the use of said composition to protect metal from corrosion and mildew. The composition comprises, in parts...
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7776233 |
Oleaginous corrosion resistant composition
The invention relates to an oleaginous corrosion-inhibiting composition, and the use of said composition to protect metal from corrosion. The composition comprises, in parts by weight, from about...
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7351764 |
Methods to enhance brightness of pulp and optimize use of bleaching chemicals
Mechanical or Chemical pulp is treated with about 0.01 weight % to about 5 weight % of a Mixture. The Mixture is water; diethylenetriaminepentakis(methyl)phosphonic acid or its known salts;...
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7141174 |
Modified amine for boiler water treatment
The present invention provides a method of treating boiler and condensate water by the addition of an effective amount of a hydroxyamine-acid ester treatment reagent or an all-in-one treatment...
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6995120 |
Scale control composition for high scaling environments
Barium sulfate and/or calcium carbonate scale inhibitor composition composed of a water-soluble polymer having incorporated phosphate functionality, the polymer being formed from at least one...
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6953537 |
Corrosion inhibitor
A corrosion inhibitor for use with Urea Ammonium Nitrate solutions is disclosed, comprising a blend of molybdate and one or more of the inorganic phosphates (including phosphates, polyphosphates,...
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6706214 |
Composition and process for inhibiting corrosion of metallic substrates
A composition and process for inhibiting the corrosion of metallic substrates is revealed. The process utilizes an aqueous treatment solution comprising chitosan which has been reacted with an...
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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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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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6123869 |
Precipitation of scale inhibitors
A scale inhibitor solution composition comprising water; an organophosphorous scale inhibitor selected from the group consisting of nitrilotri(methylene phosphonic acid),...
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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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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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6001888 |
Activator for the depolymerization of polysiloxanes which are crosslinked, optionally contain fillers and/or are uncrosslinked
The invention relates to activators for the depolymerization of polysiloxanes which are crosslinked, optionally contain fillers and/or are uncrosslinked, a method for the depolymerization of...
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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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5871667 |
Inhibiting ferrous metal corrosion by aqueous ammoniate solutions
Aqueous ammoniate solutions made during the manufacture of N-hydrocarbyl thiophosphoric triamides, consisting essentially of aqueous solutions of ammonium chloride and ammonia containing a...
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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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5858282 |
Aqueous amine fluoride neutralizing composition for metal pretreatments containing organic resin and method
An amine fluoride neutralizing composition comprised of (a) about 1 to about 50 weight percent hydrofluoric acid, (b) optionally up to about 18 weight percent of a complex fluoride containing...
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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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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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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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5646101 |
Machine dishwashing detergents containing an oxygen bleach and an anti-tarnishing mixture of a paraffin oil and sequestrant
The present invention relates to a machine dishwashing composition containing from 1% to 80% of a detergent builder component other than carbonate from 0% to 9%, preferably 0% to 5%, most preferred...
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5612372 |
Liquid dispersants for pesticides
Dispersant pesticide compositions which comprise a pesticide and a salt or partial salt of an alkyl substituted amine and a phosphonic acid.
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5593595 |
Method for controlling scale using a synergistic phosphonate 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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5589106 |
Carbon steel corrosion inhibitors
The prevention of corrosion on the surfaces of metallic pipes, heat exchangers, and the like which are in contact with industrial cooling waters, and particularly industrial cooling waters...
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5407597 |
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 organophosphorus...
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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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5322640 |
Water soluble corrosion inhibitors
This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion...
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5320779 |
Use of molybdate as corrosion inhibitor in a zinc/phosphonate cooling water treatment
A corrosion inhibitor treatment composition for cooling water systems is disclosed in which no chromate is used and no free orthophosphate is present comprising a combination of a localized...
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5298221 |
Inhibition of scale formation and corrosion by sulfonated organophosphonates
A method is disclosed for inhibiting or preventing the formation of scale and corrosion on surfaces in contact with an aqueous system comprising adding to the system an amount effective to inhibit...
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5171362 |
Concrete construction material and method adapted to prevent chemical corrosion of metals located adjacent thereto
A construction material including a concrete body, a metallic material embedded within the concrete body, and an organophosphorus compound, such as an organic phosphonic acid or a salt thereof,...
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5167866 |
Control of corrosion in aqueous systems using certain phosphonomethyl amine oxides
This invention relates to controlling corrosion in aqueous systems and more particularly to using certain calcium insensitive phosphonomethyl amine oxide compounds. The compounds of this invention...
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5143622 |
Phosphinic acid-containing polymers and their use in preventing scale and corrosion
The invention describes acrylamide, acrylic acid, polymers and co-polymers containing phosphinate groups to inhibit scale and corrosion caused by metal surfaces contacting industrial waters.
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5127954 |
Corrosion inhibiting systems, products containing residual amounts of such systems, and methods therefor
The corrosion inhibiting systems comprise at least one of the following: sodium fluorophosphate, and a water soluble salt of phosphonic acid derivatives having the general formula Rn R1 N(CH2 PO3...
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5089150 |
Method of increasing retention of scale inhibitors in subterranean formations
A novel method of injecting or squeezing a cross-linked scale inhibitor down a well into a subterranean formation which significantly lengthens its effective life is accomplished by cross-linking a...
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5073339 |
Method of inhibiting corrosion and scale formation in aqueous systems
A method of inhibiting corrosion of metal surfaces in contact with aqueous solutions and of inhibiting scale formation thereon is provided by introducing and maintaining in the solution certain...
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5068059 |
Corrosion inhibitor
A corrosion inhibitor for aqueous systems containing ferrous and non-ferrous metallic surfaces comprising (a) hydroxyphosphonoacetic acid, or a water soluble salt thereof, and (b) an...
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5043099 |
Mono- and di-substituted (diphosphonoalkylamino methyl)-4-hydroxybenzenesulfonic acid
New polyamino-polyphosphonic-hydroxybenzenesulfonic acid compounds as the free acid or their alkali or alkaline earth metal salt. Specifically, the compounds are the mono- and...
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4992184 |
Phosphite sulfonate reaction products as multifunctional additives
Phosphites of hydrocarbyl diols or alkoxylated amines are reacted with aryl sulfonic acids preformed or formed in situ in lubricants to provide multifunctional antioxidant, corrosion inhibiting,...
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4950474 |
Combination corrosion and scale inhibiting system containing phosphonate/amine reaction product
A series of water-dispersible corrosion and scale inhibiting solutions are disclosed which contain the reaction product of a phosphonate compound containing at least two phosphonate groups of the...
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4927561 |
Multifunctional antifoulant compositions
Multifunctional process antifoulant compositions and methods are disclosed. The compositions comprise (1) a polyalkenylthiophosphonic acid or ester thereof, and at least one additional antifouling...
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4904413 |
Cooling water corrosion control method and composition
A composition and method for inhibiting corrosion in industrial cooling waters which contain hardness and have a pH of at least 8, which composition comprises a water-soluble organic phosphonate...
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4892679 |
Oxa-alkane polyphosphonic acids, their use as thresholders, and complexing compositions containing these compounds
Oxa-alkane polyphosphonic acids corresponding to general formula (I) ##STR1## in which R1 is a C1 -C10 alkyl group, an optionally substituted C6 -C10 aryl group, a phenyl- or naphthylalkyl group, a...
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4886617 |
Water soluble phosphonated polymers
Novel water soluble polymers containing an hydroxyl alkyl aminoalkylene phosphonate functionality are disclosed. These polymers have utility as deposit control agents effective in a number of water...
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4880566 |
Silicate-and magnesium-free stabilizer mixtures
Silicate- and magnesium-free stabilizer mixtures for stabilizing aqueous peroxide bleaching baths based on organic acids and/or salts thereof comprising: (A) polyhydroxy and/or hydroxycarboxylic...
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4880907 |
Quaternary salts of quinoline oligomer as metal surface protective materials (C-2212)
Novel oligomeric quinolinium salts are disclosed. These are formed by reacting quinoline oligomers with alkylating agents such as benzyl halide, p-α-xylenyl dihalide and alkyl sulfates. The novel ...
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