The present disclosure relates to agents, compositions, and methods for inhibiting corrosion in various substrates, for example in metal substrates. The present disclosure also relates to compositions for inhibiting corrosion comprising at least one organic heterocyclic compound and at least one metal salt or mixed metal salt selected from rare earth, alkali earth and transition metals.

A sealer composition for a cementitious substrate, a cementitious structure sealed with the sealer composition, and a method of sealing a steel reinforced cementitious structure with the sealer composition. The sealer composition includes a substantially non-aqueous blend of a first silane, a second silane having a higher molecular weight than the first silane, and a corrosion inhibitor. The corrosion inhibitor is soluble in silane, soluble in solvent-diluted silane, and at least partially soluble in water. The cementitious structure includes a cementitious substrate and the sealer applied to the surface of the substrate and at least partially penetrating into the substrate. The method of sealing a steel reinforced cementitious structure from intrusion of corrosion-causing agents includes applying the sealer to the surface of a steel reinforced cementitious substrate and permitting the sealer composition to penetrate into the substrate to seal the substrate.

A method of corrosion inhibition on a substrate may comprise: applying a sealing solution to an anodized surface of the substrate, wherein the sealing solution may comprise a nanomaterial dopant and a corrosion inhibiting compound, wherein the nanomaterial dopant may comprise at least one of graphene nanoplatelets, carbon nanotubes, and carbon nanofibers, and wherein the corrosion inhibiting compound may comprise at least one of a trivalent chromium compound, a trivalent praseodymium compound, nickel acetate, cobalt acetate, siloxanes, silicates, orthophosphates, molybdates, or a compound comprising at least one of elemental or ionic praseodymium, cerium, cesium, lanthanum, zinc, lithium, magnesium, or yttrium; and drying the sealing solution on the substrate to form a sealing layer comprising the nanomaterial dopant and the corrosion inhibiting compound.

An adhesive for joining metals and resins is disclosed. The adhesive comprises 0.0001˜3 wt. % of amino silane, 0.0001˜1 wt. % of a crosslinker and 0.0001˜3 wt. % of an organometallic compound. In particular, the adhesive forms an adhesive layer that has a metal atomic ratio less than 50%.

Provided herein is a composition for treating aluminum containing surfaces, wherein the composition includes a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino group/s of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, and wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and/or at least one amide bond.

The present invention relates to a chromium-free metal surface treatment composition comprising 10-30 parts by weight of a silane-based compound, 0.5-6 parts by weight of an organic acid, 0.1-3 parts by weight of a vanadium compound, 0.1-3 parts by weight of a magnesium compound, 0.5-3 parts by weight of a wax and a balance of a solvent. The metal surface treatment composition of the present invention can ensure slip resistance and required properties such as corrosion resistance and workability, thereby enabling a metal material to be prevented from slipping or falling off during processing, pipe making and the like.

A process and composition for coating a pipe and a pipe support includes mixing a cellulose acetate, a plasticizer, and an oil together so as to form a solid mixture, heating the solid mixture so as to form a liquid state, covering an area of the joinder of the pipe and the pipe support with the liquid state, and drying the liquid state on the area of the joinder. An ethylene-based polymer stabilizer is added to the mixture of the cellulose acetate, the plasticizer and the oil. The oil migrates by gravity from the liquid state from the covered pipe into an area of contact between the pipe and the pipe support. The liquid state is applied around the outer diameter of the pipe and over the outer surface of the pipe support underlying the outer diameter of the pipe.

The present application discloses paint based on a graphene nano container and a self-repairing coating as well as a preparation method and application thereof. The paint comprises a first component comprising 2040 parts by weight of epoxy resin; a second component comprising 0.12 parts by weight of corrosion inhibitor-loaded graphene nano container, 1 part by weight of diluent, 3060 parts by weight of epoxy curing agent, 1 part by weight of defoaming agent and 1 part by weight of flatting agent, wherein the corrosion inhibitor-loaded graphene nano container comprises graphene grafted with cyclodextrin and the corrosion inhibitor reversely binding to the cyclodextrin. The paint of the present application is simple in preparation process, green and environmental friendly in raw material, low in price and available, and meanwhile the self-repairing coating formed thereof is excellent in protection performance.

Disclosed are curable coating compositions, and methods of cathodic corrosion protection using the compositions. For example, a curable coating composition comprising a mixed salt of magnesium thiodialkanoate, and a method for applying the coating composition, which when applied onto a steel or other ferrous substrate provides an anticorrosive coating, effective for improving resistance to cathodic disbondment.

A method of inhibiting corrosion of a metal surface in contact with an aqueous medium is provided. The method may include contacting the metal surface with a corrosion inhibitor composition where the corrosion inhibitor composition may include a phosphino succinic oligomer (PSO); an azole; and a molybdate. The disclosed corrosion inhibitor composition is especially useful for inhibiting corrosion in mixed metallurgy systems.