Rust inhibiting compositions and methods for protecting metal surfaces with same
OwnerRandolph K. Binterinventor
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Abstract
Rust inhibiting compositions having improved elasticity properties are provided. The compositions contain oxime based rust converter compounds formulated with a latex based paint to provide a flexible film coating that acts as a barrier to oxygen and water vapor diffusion to the metal surface. Methods for applying the rust inhibiting compositions to metal surfaces are also provided.
Claims24
A rust inhibiting composition for providing a flexible, durable coating upon a metal substrate surface, consisting essentially of:
- (a) a base carrier fluid comprising a latex based paint;
- (b) an oxime compound capable of reacting with rusted metal to form an inert metal complex, wherein said oxime compound is not complexed with a metal;
- and
- (c) at least one additive selected from the group consisting of rheology modifiers, poly(tetrafluoroethylene), lubricity additives, surfactants, zinc oxide, ammonia, defoamers, and ultraviolet protectants,
- wherein the composition comprises less than about 1 weight percent of volatile organic compounds, and
- wherein the composition, when applied to a metal substrate surface, forms a flexible, elastic coating wherein the stress induced in the flexible coating by the deformation of the substrate is less than the yield strength of the coating.
A method of coating a metal substrate surface with a flexible, elastic coating material for inhibiting rust corrosion of the metal, comprising:
- applying a rust inhibiting composition onto a metal substrate surface, the composition consisting essentially of:
- (i) a base carrier fluid comprising a latex based paint;
- (ii) an oxime compound capable of reacting with rusted metal to form an inert metal complex, wherein said oxime compound is not complexed with a metal;
- and
- (iii) at least one additive selected from the group consisting of rheology modifiers, poly(tetrafluoroethylene), lubricity additives, surfactants, zinc oxide, ammonia, defoamers, and ultraviolet protectants,
- wherein the composition comprises less than about 1 weight percent of volatile organic compounds, and
- wherein the composition, when applied to a metal substrate surface, forms a flexible, elastic coating wherein the stress induced in the flexible coating by the deformation of the substrate is less than the yield strength of the coating.
A method of coating a metal substrate surface with a flexible, elastic coating material for inhibiting rust corrosion of the metal, comprising:
- (a) placing a mesh screening onto a metal substrate surface;
- (b) applying a rust inhibiting composition onto the metal substrate surface and the mesh screening, the composition consisting essentially of:
- (i) a base carrier fluid comprising a latex based paint;
- (ii) an oxime compound capable of reacting with rusted metal to form an inert metal complex, wherein said oxime compound is not complexed with a metal;
- and
- (iii) optionally, at least one additive selected from the group consisting of rheology modifiers, poly(tetrafluoroethylene), lubricity additives, surfactants, zinc oxide, ammonia, defoamers, and ultraviolet protectants;
- and
- (c) optionally, applying a second coating of the composition to the metal substrate surface and the mesh screening;
- wherein the composition comprises less than about 1 weight percent of volatile organic compounds, and
- wherein the composition, when applied to a metal substrate surface, forms a flexible, elastic coating wherein the stress induced in the flexible coating by the deformation of the substrate is less than the yield strength of the coating.
Dependencies are inferred from the claim text.