A composition useful as corrosion inhibitor formulation for application in heavy brine systems, comprising at least one amidoamine; at least one sulfur synergist; at least one phosphate ester. In a preferred embodiment, the composition comprises additionally formulation bonding surfactant; and/or at least one solvent system.

Corrosion inhibitor compositions are provided that can include a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, optionally a dispersant, and hydroxyphosphono acetic acid and/or salts thereof. Methods of mitigating or inhibiting corrosion of housing or conduits containing aqueous mediums are also disclosed. The methods can include the steps of pretreating the metal conduit with a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, and hydroxyphosphono acetic acid, introducing an aqueous medium into the metal conduit, and injecting a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, and hydroxyphosphono acetic acid and/or salts thereof into the aqueous medium.

Compositions with supramolecular structures for use in anticorrosive methods include a corrosion inhibitor; a supramolecular host chemical or a supramolecular guest chemical configured to engage in host-guest chemistry with the corrosion inhibitor; and a solvent. Methods of inhibiting corrosion on a surface or reducing the amount of anticorrosive composition within a system include adding an anti-corrosively effective amount of the composition to the system.

Described herein is a continuous coil pretreatment process used to treat the surface of an aluminum alloy sheet or coil for subsequent deposition of an acidic organophosphorus compound. The process can include applying a cleaner to a surface of an aluminum sheet or a coil; etching the surface of the aluminum sheet or the coil with an acidic solution; rinsing the surface of the aluminum sheet or the coil with deionized water; applying to the surface of the aluminum sheet or the coil a solution of an acidic organophosphorus compound; rinsing the surface of the aluminum sheet or the coil with deionized water; and drying the surface of the aluminum sheet or the coil.

Described herein is a continuous coil pretreatment process used to treat the surface of an aluminum alloy sheet or coil for subsequent deposition of an acidic organophosphorus compound. The process can include applying a cleaner to a surface of an aluminum sheet or a coil; etching the surface of the aluminum sheet or the coil with an acidic solution; rinsing the surface of the aluminum sheet or the coil with deionized water; applying to the surface of the aluminum sheet or the coil a solution of an acidic organophosphorus compound; rinsing the surface of the aluminum sheet or the coil with deionized water; and drying the surface of the aluminum sheet or the coil.

A surface protection composition having a compound represented by the formula (1) in an amount of 0.1 to 10 mass % in terms of phosphorus element with respect to the total amount of the composition, the compound (b) the metal-containing compound in an amount of 0.1 to 10 mass % in terms of a metal element with the total amount of the composition or the amine compound in an amount of 0.1 to 5.0 mass % in terms of nitrogen element the total amount of the composition, the compound (c) (meth)acrylate having 2 or more carbon-carbon double bonds and hydrocarbon chains having four or more carbon atoms in an amount of 1.0 to 70 mass % with the total amount of the composition, the compound (d) a photopolymerization initiator in an amount of 0.1 to 10 mass % with the total amount of the composition. ##STR00001##

A method of improving corrosion and mar resistance of steel components by creating a black magnetite finish, with a medium temperature process, prior to application of a phosphate layer coating.

Use of dithiophosphinic acids of the general formula HS.sub.2P(R.sup.1)(R.sup.2) and/or salts thereof for producing chrome-free, polymer-containing corrosion control layers on metallic surfaces, R.sup.1 and R.sup.2 independently of one another each being organic radicals having 1 to 30 C atoms.

Use of dithiophosphinic acids of the general formula HS.sub.2P(R.sup.1)(R.sup.2) and/or salts thereof for producing chrome-free, polymer-containing corrosion control layers on metallic surfaces, R.sup.1 and R.sup.2 independently of one another each being organic radicals having 1 to 30 C atoms.

A composition and method of inhibiting corrosion and white rust on metal components in a water system. The composition preferably comprises an amino-acid based polymer (most preferably a polyaspartic acid or a salt thereof), hydroxyphosphonoacetic acid, and a second phosphonic acid (preferably a phosphonocarboxylic acid), and does not require the use of regulated metals. The composition is effective even in the presence of biocides. A preferred method of inhibiting white rust comprises adding an amino-acid based polymer or hydroxyphosphonoacetic acid or both to the water system. A preferred method of inhibiting corrosion or white rust comprises adding an amino-acid based polymer, hydroxyphosphonoacetic acid, and a phosphonocarboxylic acid to the water system. Preferably the active concentrations are at least 3 ppm each of the amino-acid based polymer and hydroxyphosphonoacetic acid when added to a volume of water in the water system.