A corrosion inhibiting additive and a corrosion inhibiting coating including the additive for providing corrosion resistance to a metal are provided. The corrosion inhibiting additive includes a first corrosion inhibiter comprising an organic cation in a cation exchange resin and a second corrosion inhibiter includes a phosphate compound. The corrosion inhibiting additive is for incorporation into a coating having at least a polymer binder.

The present invention addresses the problem of providing: a metal surface treatment agent which can form a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material; a method of producing a metal material having a film by using the metal surface treatment agent; and a metal material having a film, which is obtained by the method. A chemical agent, which contains prescribed amounts of a water-soluble or water-dispersible resin (A) and a compound (B) having a nitrile group and an amino group, is capable of forming a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material and, therefore, can solve the above-described problem.

The present invention addresses the problem of providing: a metal surface treatment agent which can form a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material; a method of producing a metal material having a film by using the metal surface treatment agent; and a metal material having a film, which is obtained by the method. A chemical agent, which contains prescribed amounts of a water-soluble or water-dispersible resin (A) and a compound (B) having a nitrile group and an amino group, is capable of forming a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material and, therefore, can solve the above-described problem.

A one-part primer composition is provided. The one-part primer composition includes a first epoxy resin that is a liquid under ambient conditions a particulate corrosion inhibitor present in an amount of from 5 wt % to 30 wt % relative to the overall weight of the composition excluding carrier solvents and water, a curative comprising a primary aromatic amine, a silane coupling agent, a carrier solvent; and water homogeneously mixed with the carrier solvent and present in an amount sufficient to hydrolyze the silane coupling agent while preserving solubility of the first epoxy resin and curative in the carrier solvent/water mixture. The corrosion inhibitor is pre-dispersed in a liquid epoxy to break the agglomeration of the inhibitors, mitigate settling of the pigment and improve primer performance.

An aqueous surface-treating agent comprising (A) an aqueous emulsion of silicone oil, (B) a silanol-modified polyurethane resin, (C) a silane compound and/or a partial hydrolysate thereof, (D) an aqueous emulsion of a hydrazide and a carbonyl group-containing polyurethane resin, and (E) an aqueous emulsion of a polyurethane resin having a glass transition temperature of −30° C. or lower, and a thermal softening temperature of 70° C. or lower measured by using a flow tester when heated from 40° C. to 150° C. at a heating rate of 5° C./min. The aqueous surface-treating agent contains silicone oil for preventing sticking between products and a silanol-modified polyurethane resin binder having a low hardness and excellent adhesiveness to seal members, and improves the corrosion resistance of an aqueous surface-treating agent for aluminum substrates etc.

An aqueous surface-treating agent comprising (A) an aqueous emulsion of silicone oil, (B) a silanol-modified polyurethane resin, (C) a silane compound and/or a partial hydrolysate thereof, (D) an aqueous emulsion of a hydrazide and a carbonyl group-containing polyurethane resin, and (E) an aqueous emulsion of a polyurethane resin having a glass transition temperature of −30° C. or lower, and a thermal softening temperature of 70° C. or lower measured by using a flow tester when heated from 40° C. to 150° C. at a heating rate of 5° C./min. The aqueous surface-treating agent contains silicone oil for preventing sticking between products and a silanol-modified polyurethane resin binder having a low hardness and excellent adhesiveness to seal members, and improves the corrosion resistance of an aqueous surface-treating agent for aluminum substrates etc.

Described herein are pretreatment compositions, coated aluminum alloy products, and methods for coating the alloys. The pretreatment compositions include inorganic chemical corrosion inhibitors dispersed in a silane-based matrix and may further include clay particles. The inorganic chemical corrosion inhibitors include rare earth metals and salts thereof. The pretreatment compositions, when applied to the surface of an alloy, inhibit corrosion of the alloys. The pretreatment compositions can be used in automotive, electronics, industrial, transportation, and other applications.

Described herein are pretreatment compositions, coated aluminum alloy products, and methods for coating the alloys. The pretreatment compositions include inorganic chemical corrosion inhibitors dispersed in a silane-based matrix and may further include clay particles. The inorganic chemical corrosion inhibitors include rare earth metals and salts thereof. The pretreatment compositions, when applied to the surface of an alloy, inhibit corrosion of the alloys. The pretreatment compositions can be used in automotive, electronics, industrial, transportation, and other applications.

A wire grid polarizer (WGP) can have a conformal-coating to protect the WGP from at least one of the following: corrosion, dust, and damage due to tensile forces in a liquid on the WGP. The conformal-coating can include a silane conformal-coating with chemical formula (1), chemical formula (2), or combinations thereof: ##STR00001##
A method of applying a conformal-coating over a WGP can include exposing the WGP to Si(R.sup.1).sub.d(R.sup.2).sub.e(R.sup.3).sub.g. In the above WGP and method, X can be a bond to the ribs; each R.sup.1 can be a hydrophobic group; each R.sup.3, if any, can be any chemical element or group; d can be 1, 2, or 3, e can be 1, 2, or 3, g can be 0, 1, or 2, and d+e+g=4; R.sup.2 can be a silane-reactive-group; and each R.sup.6 can be an alkyl group, an aryl group, or combinations thereof.

The present invention relates to a surface treatment composition comprising, on the basis of 100 wt % of the solid part of the composition, 20-40 wt % of a water-soluble polyurethane resin, 40-60 wt % of a silane-based sol-gel resin in which three types of silane compounds are cross-linked, 5-15 wt % of a curing agent, 0.5-1.5 wt % of a corrosion inhibitor, 0.1-1.0 wt % of a molybdenum-based compound, 1.0-3.0 wt % of a silane coupling agent; 1.0-2.0 wt % of an organometallic complex, 1.0-2.0 wt % of an acid scavenger, 0.1-1.0 wt % of an aluminum-based compound, and 1.0-2.0 wt % of a lubricant. A ternary hot-dip galvannealed steel sheet treated with a chromium-free surface treatment coating agent, according to an exemplary embodiment in the present invention, has excellent resistance to blackening, alkali and corrosion, and provides excellent effects without concern for problems, in chromium treatment, of additional equipment installation, an increase in manufacturing costs and environmental pollution.