Abstract: The present invention relates to an acidic aqueous particulate composition containing, in addition to iron(III) ions, fluoride ions and at least one water-insoluble, dispersed organic binder, a water-insoluble, dispersed oxide pigment with elevated resistance to agglomeration for the autophoretic deposition of organic-inorganic hybrid layers onto metal surfaces, the composition additionally containing at least one anionic wetting agent which comprises functional groups selected from sulfonates, phosphonates and/or carboxylates. The invention furthermore comprises the use of such a composition for the autodeposition of a film-forming organic-inorganic hybrid coating onto metal surfaces which are at least in part selected from surfaces, the main constituents of which are iron, zinc and/or aluminum.

Abstract: A method for coating a metal substrate with a white to off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

Abstract: An anti-corrosion composition containing at least one fatty acid ester, at least one glycol, at least one ethylene oxide/propylene oxide (EO/PO) alkoxylate, at least one polyethylene glycol ester, and at least one modified lecithin is provided. An anti-corrosion composition also is provided which contains at least one fatty acid ester, at least one glycol, at least one sorbate, and at least one modified lecithin. A method of preparing an anti-corrosion composition is also provided. At least one modified lecithin can be blended with at least one fatty acid ester, at least one glycol, at least one EO/PO alkoxylate, or at least one polyethylene glycol ester, or any combination thereof. A method of inhibiting corrosion of a metal surface including applying an anti-corrosion composition to the metal surface in an amount effective to inhibit corrosion of the metal surface is further provided.

Abstract: The present invention relates to an aqueous treatment composition for inhibiting corrosion and acid attack on metallic surfaces that comprises a thiourea organic derivative, a polyalkoxylated terpene nonionic surfactant and an acid. The invention also relates to a process for cleaning industrial metallic equipment, in particular heat exchangers in which a heat transfer fluid, generally based on air or on water, flows, with a view to cleaning them and removing scale and other soiling.

Abstract: Disclosed is a method for providing an anti-corrosion protective coating to a metal substrate that uses a coating composition comprising a resin and a polyfunctional bridging molecule to both bind to the resin and to chelate the bound polymeric resin directly to the metal substrate. One category of polyfunctional bridging molecules preferably includes at least one amine function to bind to a resin and at least one carboxylate, thiol, silane, phenolate, acetoacetonate, imine, phosphate, or phosphonate function to chelate to a metal substrate. It is theorized that the amine function can bind to certain pendent chains in coating resins through a Michael addition reaction while the carboxylate, thiol, silane, phenolate, acetoacetonate, imine, phosphate, or phosphonate functions chelate to the metal substrate. These polyfunctional bridging molecules provide an organic binding of the resin to the metal substrates.

Abstract: The present invention relates to new coating materials for corrosion control.

Abstract: A catalytic composition with a corrosion-inhibiting effect on metal surfaces is described. Also described, is a corrosion-inhibiting process and use of a corrosion inhibitor. Further, the catalytic composition can have a corrosion-inhibiting effect on metal surfaces in contact with an esterification medium comprising a carboxylic acid and an alcohol, wherein the composition comprises as a catalyst, a strong protonic acid and, as corrosion inhibitor, an iron(III) carboxylate.

Abstract: The present invention relates to a process for improving the heat and corrosion resistance of stainless steel by means of a novel passivation process. This process comprises a chemical treatment with an aqueous solution comprising a complexing agent combination of at least one oxidant, a subsequent rinsing and a subsequent treatment at elevated temperature in an oxygen-containing atmosphere. The stainless steel surfaces obtained according to the invention have a homogeneous passive layer having increased chemical resistance and resistance to thermal discoloration.

Abstract: A composition for coating a metal substrate with a white to off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

Abstract: The present invention relates to coating compositions for metallic devices, especially for aircrafts, to provide protection against corrosion. The coating composition comprises ceramic particles having at least one active material substantially homogeneously distributed throughout each particle. The active material being releasable in the presence of a liquid by solubilization into the liquid.

Abstract: A corrosion and abrasion resistant coating composition with at least one alkoxy siloxane and preferably at least three alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt %, an anti-corrosion agent effective in acid and salt environments, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent.

Abstract: A chrome-free corrosion inhibitor composition includes: titanium chloride; a stabilizer including a mixture of hydrogen peroxide and at least a compound selected from nitric acid, persulfate, nitrate, and chlorate; and a film-forming enhancer selected from monosaccharide, oligosaccharide, polysaccharide, derivatives of saccharide, and combinations thereof.

Abstract: Methods for controlling atmospheric corrosion of a metallic surface including coating the metallic surface with a coating material containing at least one compound having at least one thioamide group.

Abstract: The invention relates to an oleaginous corrosion-inhibiting coating composition, and the use of said coatings to protect metal from corrosion. The composition comprises, in parts by weight, from about 20 to 40 parts of lubricating oil, 10 to 40 parts of organic solvents, 10 to 30 parts of an inhibitor consisting of sulfonic acid-carboxylic acid metal complexes, effective amounts of at least two different oil soluble antioxidants, effective amounts of at least one water-displacing compound, 10 to 30 parts of at least one alkyl or alkylaryl metal sulfonate and 0.1 to 2.0 parts of at least one phosphoric acid ester and amine salt.

Abstract: An aqueous metal treatment composition designed to improve adhesion and corrosion resistance of the metal surface includes an organofunctional silane in combination with a fluorozirconic or fluorotitanic acid, methanesulfonic acid and nitric acid. The methanesulfonic acid acts to reduce sludge formation. Preferably, the composition also includes a fluorosilicic acid which likewise reduces sludge and improves corrosion resistance.

Abstract: A process for iron phosphating ferrous metal substrates having undesirable ferrous oxides thereon, such as that formed by laser cutting, that eliminates at least the pickling step in the phosphating process and provides good paint adhesion, and compositions of matter useful in the process.

Abstract: A corrosion-inhibiting composition for application to a metal substrate, such as aluminum or steel, and in connection with a paint, and the synthesis of the composition. The active inhibitor constituent of the composition can be selected from the group consisting of 2,5-dimercapto-1,3,4 thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4-thiadiazole, trithiocyanuric acid (TMT), and derivatives of DMTD and TMT, including various N— or S— and N, N—, S— and N—,S-substituted derivatives of DMTD, including salts of DMTD of the general formula: M(DMTD)n, where n=1,2 or 3, and M is a metal cation and preferably M=Zn(II), Bi(III), Co(II), Ni(II), Cd(II), Pb(II), Ag(I), Sb(III), Cu(II), Li(I), Ca(II), Sr(II), Mg(II), La(III), Ce(III), Pr(III), Al(III) or Zr(IV). DMTD, TMT, and their derivatives may also be combined with phosphates, molybdates, borates, silicates, tungstates, phosphotungstates, phosphomolybdates, cyanamides, carbonates, SiO2 and mixtures thereof.

Abstract: The ferrous metal chemical conversion coating is comprised of mixed oxides and organometallic compounds of aluminum and iron. A ferrous metal substrate is immersed for a period of time in a bath composition, at a temperature, at a pH, and at a concentration for each constituent of the bath composition, that will form a coating with the desired characteristics. The bath composition comprises water, aluminum salt, oxalic acid, and an oxidizer. The conversion coating is amorphous in nature and can be formed as thin as 1 micron with a coating weight in the range of about 40-250 milligrams per square foot. When sealed with an appropriate rust preventive material, the coating enhances corrosion resistance of the ferrous metal substrate. It is an effective absorbent base for paint finishes. When top coated with a lubricant, the conversion coating aids (a) assembly of parts, (b) break-in of sliding surfaces, and (c) anti-galling.

Abstract: A pigment grade corrosion inhibitor and a method of applying the inhibitor is disclosed. The inhibitor is comprised of a host species comprised of an inorganic compound having a layered structure and a guest species comprised an anionic species of a weak acid. The host species is preferably a double hydroxide having a structure of: [M(II)1?xM(III)x(OH?)2][An?x/n.yH2O], where M(II) is a divalent metal cationic species, M(III) is a trivalent metal cationic species, and An? is an anionic species, preferably with the species present in a range of: 0.2?M(III)/(M(II)+M(III))?0.4.

Abstract: A corrosion and abrasion resistant coating composition with at least one alkoxy siloxane and preferably at least three alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt %, an anti-corrosion agent effective in acid and salt environments, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent.

Abstract: A friction reducing, corrosion resistant and abrasion resistant coating composition having a first part with at least one alkoxy siloxane and preferably at least two alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt %, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent, and a second part consisting of a friction reducing additive.

Abstract: A corrosion and abrasion resistant coating composition with at least one alkoxy siloxane and preferably at least two alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt %, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent.

Abstract: A corrosion inhibiting mixture is disclosed comprising a carrier, a volatile corrosion inhibitor and a tracing agent which absorbs light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emits light in the blue region of the electromagnetic spectrum.

Abstract: The ferrous metal chemical conversion coating is comprised of mixed oxides and organometallic compounds of aluminum and iron. A ferrous metal substrate is immersed for a period of time in a bath composition, at a temperature, at a pH, and at a concentration for each constituent of the bath composition, that will form a coating with the desired characteristics. The bath composition comprises water, aluminum salt, oxalic acid, and an oxidizer. The conversion coating is amorphous in nature and can be formed as thin as 1 micron with a coating weight in the range of about 40-250 milligrams per square foot. When sealed with an appropriate rust preventive material, the coating enhances corrosion resistance of the ferrous metal substrate. It is an effective absorbent base for paint finishes. When top coated with a lubricant, the conversion coating aids (a) assembly of parts, (b) break-in of sliding surfaces, and (c) anti-galling.

Abstract: A coating composition comprising an aqueous mixture containing acid-stable particles and one or more fluoroacids. The amount of the acid-stable particles in the coating composition is from 0.005% to 8% by weight on a dry weight basis. The acid-stable particles can be selected from aluminum-modified silica particles, nonaluminum-modified silica particles, and organic particles selected from anionically stabilized polymer dispersion particles. The invention is also directed to a coating on a metal substrate. The coating contains acid-stable particles attached to the metal substrate through a metal-oxide matrix. The metal-oxide matrix comprises a metal selected from titanium, zirconium, silicon, hafnium, boron, aluminum, germanium, or tin.

Abstract: A coating composition comprising an aqueous mixture containing inorganic particles, a catechol compound, and one or more fluoroacids. The preferred fluoroacids are selected from fluorotitanic acid, fluorozirconic acid, fluorosilicic acid, fluoroboric acid, fluorostannic acid, fluorogermanic acid, fluorohafnic acid, fluoroaluminic acid or salts of each thereof. The invention is also directed to a coating on a metal substrate. The coating comprises silica particles attached to the metal substrate through a metal-oxide matrix. The metal-oxide matrix comprises a metal selected from titanium, zirconium, silicon, hafnium, boron, aluminum, germanium, or tin, and a catechol compound.

Abstract: A chromium-free, stable, water dispersion of zinc powder is produced by incorporation, into a zinc powder, of a silane coupling agent having a mercapto group in its molecules. The coupling agent is present in an amount ranging from 0.1 to 10 parts by weight for every 100 parts by weight of the zinc powder. The composition may be used in a water base paint.

Abstract: The present invention provides methods and compositions for the reduction of the corrosion rate of already corroding steel reinforcements embedded in a hardened concrete structure as well as for the protective corrosion inhibition of uncorroded steel reinforcements embedded in a hardened concrete structure exposed to aggressive environments. The inventive new compositions employed for the novel method are essentially based on one or more amino- and/or hydroxyalkylamino compound(s), which are partially or completely neutralized with one or more inorganic acid(s) and/or derivatives thereof and/or aliphatic carboxylic- and/or aromatic carboxylic acid(s), one or more surfactant(s) and one or more water-based or water-thinnable water repellent agent(s) selected from the group of organosilicones.

Abstract: The invention provides an anticorrosive lubricant composition for molded plastic products, causing no chemical attack to mechanical components such as gears, shafts, and so forth, formed of molded resins, even if used therefor, and also provides mechanical components such as gears, shafts, and so forth, to which the same is applied. The anticorrosive lubricant composition for molded plastic products contains 100 parts by weight of a synthetic hydrocarbon oil having kinematic viscosity of 10 to 500 mm2/s at 40° C., and 0.1 to 10 parts by weight of a corrosion prevention additive.

Abstract: Corrosion-inhibiting pigments based on manganese are described that contain a trivalent or tetravalent manganese/valence stabilizer complex. An inorganic or organic material is used to stabilize the trivalent or tetravalent manganese ion to form a compound that is sparingly soluble, exhibits low solubility, or is insoluble in water, depending upon the intended usage. Specific stabilizers are chosen to control the release rate of trivalent or tetravalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Stabilizers may also modify the processing and handling characteristics of the formed powders. Manganese/valence stabilizer combinations are chosen based on the well-founded principles of manganese coordination chemistry. Many manganese-valence stabilizer combinations are presented that can equal the performance of conventional hexavalent chromium or tetravalent lead systems.

Abstract: A chromium-free, stable, water dispersion of zinc powder is produced by incorporation, into a zinc powder, of a silane coupling agent having a mercapto group in its molecules. The coupling agent is present in an amount ranging from 0.1 to 10 parts by weight for every 100 parts by weight of the zinc powder. The composition may be used in a water base paint.

Abstract: Corrosion-inhibiting pigments based on manganese are described that contain a heptavalent (permanganate), hexavalent (manganate), or pentavalent (manganate) compound. An inorganic or organic material is used with the heptavalent, hexavalent, or pentavalent manganese ion to form a compound that is sparingly soluble in water. Specific solubility control cations are chosen to control the release rate of heptavalent, hexavalent, or pentavalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Solubility control agents may also modify the processing and handling characteristics of the formed powders. Many permanganate or manganate compounds are presented that can equal the performance of conventional hexavalent chromium systems. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

Abstract: A method of preventing corrosion in pipelines comprising draining pipeline of all residual compounds, blowing through with nitrogen and rinsing with a corrosion inhibiting rinsing agent.

Abstract: An anticorrosive agent containing, as essential components, (a) urea or a urea derivative and (b) a hydroxy aromatic compound.

Abstract: The present invention relates to the application of a coating to a pipeline, FPS (Fire Protection System) or to pipe stock from which a pipeline is fabricated. A composition which when applied to the inside surface of the pipe prevents either chemical corrosion or microbiologically influenced corrosion is disclosed. Also disclosed is a method for utilizing this material to protect both existing pipelines and the raw stock used to construct pipelines and various apparatus for applying a coating of the composition, cleaning, and maintenance of the passive coating. Also disclosed is a method to recycle the composition to be used in other industrial pacification processes.

Abstract: A method, a composition and a method for making the composition for increasing the corrosion resistance of a magnesium or magnesium alloy surface is disclosed. The composition is a water/organic solution of one or more hydrolyzed silanes. By binding silane moieties to the magnesium surface, an anti-corrosion coating on a magnesium workpiece is produced. A complementary method, composition and method for preparing the composition for treating a metal surface to increase corrosion resistance is disclosed. The composition is an aqueous hydrogen fluoride solution with a non-ionic surfactant.

Abstract: Disclosed are a conversion coating composition for use in the surface treatment of a PCB and a conversion coating method using the same. The composition comprises 0.1-30 vol % of sulfuric acid; 0.1-15 vol % of hydrogen peroxide; 0.01-10 wt % of an organic acid; 0.1-30 wt % of a nitrogen compound; 0.01-10 wt % of an organic silicate and/or organic titanate; and 0.1-20 wt % of a film forming auxiliary, 0.1-30 wt % of an etching rate controller, 0.1-20 wt % of a reaction promoter and/or 0.1-20 g/l of a stabilizer. This composition is applied to a PCB at 10-60° C. for 1-10 min. The conversion coating film is superb in adhesive strength, acid resistance, and adhesion and can be formed with ease.

Abstract: There is provided an anticorrosive composition for a memory unit bearing so as to control outgas generation which would cause magnetic head crushing or memory error. The anticorrosive composition for a memory unit bearing contains a carbonic ester represented by the following formula: wherein R and R′ are branched alkyl groups of 13 to 15 carbon atoms and may either be the same or different.

Abstract: The present invention provides methods and compositions for the reduction of the corrosion rate of already corroding steel reinforcements embedded in a hardened concrete structure as well as for the protective corrosion inhibition of uncorroded steel reinforcements embedded in a hardened concrete structure exposed to aggressive environments. The inventive new compositions employed for the novel method are essentially based on one or more amino- and/or hydroxyalkylamino compound(s), which are partially or completely neutralized with one or more inorganic acid(s) and/or derivatives thereof and/or aliphatic carboxylic- and/or aromatic carboxylic acid(s), one or more surfactant(s) and one or more water-based or water-thinnable water repellent agent(s) selected from the group of organosilicones.

Abstract: The present invention provides metal surface treatment agents and metal surface treatment methods which can form a high anticorrosion coating without use of hexavalent chromium compounds which are a cause of environmental pollution. In the present invention, a metal surface is coated with a metal surface treatment agent made of a composition containing a compound containing at least one or more mercapto groups per molecule and, depending upon need, a curing agent, curing catalyst and/or silica and the coating of the metal surface treatment agent is heat-treated.

Abstract: Entirely asphaltic, micro-crystalline wax- and aluminum-based coating compositions, which are fully flexible and accommodate any expansion or contraction in steel structures, are prepared from various combinations of components, e.g. those selected from microcrystalline wax, naphthenic and paraffinic oils, oil-soluble alkali-metal sulfonate, gilsonite, linseed oil, naphthenic acid, solvent, a viscosity modifier, aluminum paste, attapulgite, emulsifier, milled cellulose fiber, ground mica, and silica gel, according to a described stepwise mixing procedure.