Abstract: A method for treating magnesium die castings sufficiently cleans the die castings and improves their paint adhesion and corrosion resistance by utilizing hydroxy acetic acid, among other constituents. The method includes cleaning the castings with an alkaline cleaning solution, rinsing with water, pickling the castings with an aqueous hydroxy acetic acid solution, rinsing with water again, and then contacting the castings with a chrome-free pretreatment. The alkaline cleaning and pickling steps appear to remove substantially all die casting impurities in order to adequately prepare the metal for application of the pretreatment. The chrome-free pretreatment may be an organofunctional silane solution or an aqueous polymeric system having hydroxyl and carboxylic functional groups along with a compound of a group IV-B element. The pretreatment is then painted or contacted with another decorative coating, with no rinsing step occurring between the pretreatment and painting steps.

Abstract: A method for storing a polyester film for a magnetic recording medium, characterized in that a polyester film for a magnetic recording medium with a surface roughness Ra of 6 nm or less on the surface A on one side is stored substantially in a storing atmosphere having a storing temperature kept in a range from 10.degree. C. to 35.degree. C. The polyester film stored according to this storing method is used as a base film for producing magnetic tapes.

Abstract: Duplex coated steel composite products comprising a first layer of a nitrd layer formed by applying glow discharge at a current density from 0.001 to 2.0 mA/cm.sup.2 to the surface of metal parts by using gaseous ammonia and gaseous hydrogen while maintaining the temperature of the metal parts at 300 to 650.degree. C., thereby applying plasma nitriding and a second layer comprising a hard film comprising a nitride, carbide and/or carbonitride of one or more of elements selected from Ti, Zr, Hf, V, Nb, Ta and Cr coated on the first layer by the PVD method of a laminate film or a gradient laminate film of such hard film. The treated products are excellent in adhesion with the substrate and durability and have both oxidation resistance and wear resistance.

Abstract: A method for bonding a resin which has a high glass transition temperature but low affinity to copper surfaces with a copper surface with sufficient adhesive strength. The method comprises coating the copper surfaces with an aqueous solution containing at least 0.05% of aminotetrazole or an aminotetrazole derivative, or an aqueous solution containing at least 0.05% of aminotetrazole or an aminotetrazole derivative and at least 0.1% of aminotriazole or an aminotriazole derivative.

Abstract: A thermoplastic resin-coated aluminum alloy plate having so high a processing adhesion that the laminated thermoplastic resin layer is not separated therefrom even when the plate is subjected to a severe forming process in which the plate is deep-drawn, stretched and then ironed. A process and an apparatus for producing the same are also disclosed. An aluminum alloy plate is treated with an alkali solution and an acid solution in order so as to put the surface of the plate in a special condition. The resultant plate is subjected to anodic electrolysis using a direct current in an acid solution containing one or more of inorganic acid, such as sulfuric acid and an organic acid, such as carboxylic acid or hydroxy carboxylic acid. Alternatively, the resultant plate is subjected to a treatment using hot water of above 60.degree. C., boiling water, or water vapor so as to form a uniform hydration oxide film of 2-10 nm in thickness. The alloy plate is coated with a thermoplastic resin.

Abstract: A process for coating a metallic molding article comprising transporting said article by conveyer means continuously and serially through a degreasing stage (1), a first water rinsing stage (2), a surface conditioning stage (3), a chemical conversion treatment stage (4), a second water rinsing stage (5), and an electrodeposition coating stage (6), wherein at least one stage of said stage (1), (2), (3), (4), (5) comprises in dipping said article in a treating bath of dipping system, at least one unit of said treating bath is provided with a vibratory agitation means, and the angles of immersion and emergence of said article with respect to said bath are not less than 25 degrees. The invention contributes to a curtailment of pre-treatment before coating and an effective elimination of adherent metal particles from the matallic article to provide a very satisfactory coating film.

Abstract: A method for manufacturing a guide pin is disclosed, which comprises machining a metal substrate core; optionally depositing an intermediate coating onto the substrate core; and depositing an insulative ceramic coating onto the intermediate coating by a chemical vapor deposition process under pressure conditions of up to about 500 torr, wherein the Rockwell C hardness of the metal core is greater than or equal to about 45, and the surface roughness values of the as-deposited coating are Ra less than or equal to about 35 microinches and Rmax less than or equal to about 250 microinches.

Abstract: The invention relates to a new class of alkoxy silane compounds of the following general formula: wherein R is aliphatic or aromatic having from 1 to about 15 carbon atoms and R' comprises a hydrolyzable alkoxy functionality. These compounds are particularly useful as adhesion promoters when used with adhesives such as, for example, phenylethynyl terminated polyamide or polysufide adhesives. The invention also relates to a method of synthesizing the alkoxy silane compounds defined above.

Abstract: The present invention relates to a method of treating a metal substrate to provide permanent corrosion resistance. The method comprises applying a solution containing one or more vinyl silanes in admixture with one or more multi-silyl-functional silanes to a metal substrate in order to form a coating. The method is particularly suitable for use on zinc coated surfaces.

Abstract: A method for forming a reactive medium for removing homogenous and heterogeneous impurities from a fluid is provided which includes forming a uniform oxide layer on all exposed surfaces of a porous metal substrate, depositing at least one layer of carbon on substantially all of the oxide layer formed on the porous metal substrate, depositing a precursor metal species on the carbon layer, and heating the porous metal substrate containing the carbon layer to form active sites on the carbon layer, wherein the active sites include at least partially deoxygenated metal species chemically bonded to the carbon layer. Also provided is a reactive medium for purifying a fluid, the reactive medium comprising a porous inorganic substrate, a layer including carbon and an oxide layer between the porous inorganic substrate and the layer including carbon. The reactive medium further comprises active sites including at least partially deoxygenated metal species, the active sites being bonded to the layer including carbon.

Abstract: The invention relates to substrates coated with two or more coats, which coated substrates are characterized in that they can be produced byA laminating a plastic film having a thickness of from 2 to 500 .mu.m onto the surface of the substrate,B coating the surface of the plastics film which is applied by lamination, if desired, with a filler composition which is suitable for the coating of automobile bodies,C coating the surface of the plastics film applied by lamination or, respectively, the filler coat obtained after carrying out step B with at least one pigmented coat of paint,D coating, if desired, the coat of paint obtained after carrying out step C with a transparent coating material, andE curing the coat or coats of paint applied to the surface of the plastics film which is applied by lamination.

Abstract: The invention concerns an aqueous corrosion-protective cleaning solution for tin-plated steel, in particular for tin-plated steel cans, the solution containing complex fluorides of the elements boron, titanium, zirconium, and hafnium; non-ionic surfactants; and corrosion inhibitors and having a pH within the range from 3 to 6. The invention also concerns an aqueous concentrate for preparing the solution by dilution with water and a method of cleaning tin-plated cans using the solution.

Abstract: A method of protecting from corrosion the junction between adjoining plastics coated, metal pipes, in a pipeline installation or the like, comprising roughening the exposed surface of the plastics coating on either side of the junction region, applying a primer over the abraded region of the plastics coating, allowing or causing the primer to cure or dry, and subsequently applying over the said junction region and over the regions primed with said primer, a protective top coat.

Abstract: The present invention provides a method for growing or depositing artificial bone materials called organoapatites on a metal surgical alloy. The method involves pretreating the alloy with at least one aqueous solution of a poly(amino acid). After this pretreatment step, the organoapatites can be synthesized onto the alloy. Because most surgical implants are made from metal alloys, this method can be used to make implants which contain organoapatites may promote the formation of natural bone when placed into a human patient in vivo.

Abstract: A dummy plate is provided for offset printing which essentially consists of a plate-, sheet- or band-form, mechanically and/or electro-chemically roughened, anodically oxidized and optionally hydrophilized aluminium support and a non-photosensitive, water-soluble protective layer applied thereto, characterized in that the layer contains a water-soluble organic compound which contains at least one OH- or NH-acidic group having a pKa value of .ltoreq.8 as acid or salt, and has a layer thickness which is smaller than the average roughness ra of the support material, determined by optical means. Even after extended storage at elevated temperature, the dummy plate can easily be used without an additional development step and exhibits no tendency to stick.

Abstract: A method for preventing radioactive contamination of porous surfaces comprising providing an apparatus for handling radioactive material comprising a porous surface; exposing the porous surface to a vacuum; depositing a flowable precursor material onto the porous surface, wherein the porous surface comprises pores and the vacuum is effective to substantially fill the pores with the flowable precursor material; subjecting the flowable precursor material to energy sufficient to convert the flowable precursor material to an effective sealant film comprising amorphous carbon. In a preferred embodiment, the porous surface is an anodized aluminum surface.

Abstract: A surface treatment for titanium and aluminum alloys forms a sol-gel film covalently bonded on the metal surface to produce strong, durable adhesive bonds between the metal and an organic adhesive without using toxic chemicals and while significantly reducing or eliminating rinse water requirements of traditional anodizing or etching processes. An aqueous sol containing an alkoxyzirconium and a glyddoxysilane with an organic acid catalyst and zirconium stabilizer is applied to etched or grit blasted substrates by dipping, spraying, or drenching, to produce bonds in a single application comparable in strength and performance to standard anodize controls. Parameters affecting performance include the sol composition, the Si/Zr ratio, the ratio of sol ingredients, the concentration of the sol, the carrier solvent, solution age, catalysts, surface pretreatment, application method, curing process, and primer used.

Abstract: A coating system and method for a golf ball injection mold having a land area and a patterned wall defining a hemispherical cavity is characterized by the application of a primer and a fluoropolymer top coat layer at least the patterned wall. The combined thickness of the coatings is no greater than 0.0007 inches. Owing to the thin coating, a golf ball molded in the cavity is easily ejected therefrom.

Abstract: The present invention relates to a method of improving the durability of water-repellent films deposited on the surface of a substrate and to a coated article having a water-repellent film of improved durability deposited on the substrate surface. The method includes the steps of simultaneously abrasively and chemically preparing the surface to expose an increased number of bonding sites on the substrate surface by applying a dispersion including an acid solution and an abrasive material to the surface. The dispersion is then removed and the water-repellent film is formed over the prepared surface. The bonding sites react with the water-repellent film to more effectively bond the film to the substrate and thereby improve the durability of the water-repellent film.

Abstract: A process for treating metal surfaces that includes first contacting the metal surface with a particular acidic peroxide adhesion promoting composition, followed by contacting that metal surface with an alkaline solution. This treatment is particularly suitable for treating metal surfaces used in printed circuit multilayer construction.

Abstract: This invention is directed to an electroless method of antiquing a zinc or pewter component and to products produced using the method. In its simplest form, the method includes: contacting the metal component with an oxidizing solution; rinsing the metal component to stop the formation of additional oxide; and buffing the component to achieve the desired antique look. In a preferred form of the invention, the oxidizing solution includes copper chloride, selenious acid, hydrochloric acid and sodium tetradecyl sulfate. The preferred method further includes various cleaning, rinsing and drying steps, as well as the application of a protective lacquer or other coating to seal the oxide formed on the metal component.

Abstract: A method is described for the nucleation controlled deposition of ferroelectric thin films by chemical vapor deposition in a novel processing sequence wherein a higher density of bismuth nucleation sites is achieved either by the use of a substrate member which has been treated in a manner to yield a controllably and reproducible rough surface on which SBT films with excellent properties may be produced or by using a chemically modified substrate surface upon which surface chemical properties are modified. Typical techniques for achieving surface roughening include reactive ion etching, inert ion milling and chemical mechanical polishing, each of which may be used to delineate patterned bottom electrodes. The chemical properties of the substrate may be modified by alloy deposition, deposition of seed layers which are then partially or completely in-diffused ion implantation with or without heat treatment and changing the chemistry of the surface by a pre-exposure to chemical agents prior to deposition.

Abstract: A process for coating sheet metal is disclosed that comprises the steps of 1) cleaning the sheet metal to remove surface contaminants that may interfere with the coating adhering to the sheet metal; 2) pretreating the sheet metal to promote adhesion of the coating to the sheet metal; 3) applying an electron beam curable coating to the sheet metal that when curing is complete, adheres to the sheet metal; and, 4) exposing the coating on the sheet metal to an electron beam to cure the coating, the cleaning, pretreating and curing resulting in no emission of pollutants that need to be removed before the emission is released into the atmosphere.

Abstract: A method of preparing a fast-setting coating material on a substrate which comprises contacting a stable aqueous dispersion of a polymer that contains strong cationic groups and weak acid groups onto a substrate that is basic or treated to be basic.

Abstract: A method and apparatus for washing and drying a piston and thereafter coating the piston skirt with a dry film lubricant coating and oven-curing said coating. In the washing and drying operation the piston is carried through the apparatus on a conveyor, is spun while wash solution is sprayed on it, is spun while rinse water is sprayed on it, is spun to throw off rinse water, and has air blown against it to remove moisture from its surface. A flash chamber is used in the curing step.

Abstract: Process for treating a body of steel to promote its adherence to a composition which includes at least a rubber, containing the following points:a body at least the surface of which is of stainless steel is used, this steel containing at least 0.02% and at most 0.2% carbon, at least 3% and at most 20% nickel, at least 12% and at most 28% chromium, the sum of the nickel and the chromium being at least equal to 20% and at most equal to 35%, all of these percentage values being by weight; the structure of the steel includes at least 20% by volume of martensite and is without austenite or it comprises less than 80% thereof by volume;the surface of the body is activated and then treated with at least one starting silane so that it is covered with a film constituted only, or substantially only, of one or more silanes, in such a manner that this surface treated in this way can be placed directly in contact with the composition.

Abstract: The present invention relates to improving the durability of water repellent films and a method for providing the film on a substrate. The water repellent film is preferably formed over the substrate by applying a water repellent composition Over the substrate which will form the water repellent film. The durability of the water repellency of the film is improved by activating the substrate with an acid prior to forming the water repellent film over the substrate.

Abstract: An insulated metallic strip suitable for use in the coils of power transformers and method of producing the same. Following the extrusion of a flat metallic strip of conductive material for winding into a magnet coil, the flat strip having a predetermined thickness and first and second sides bounded by a pair of fully rounded edges, the method of insulating the strip of conductive material by supporting the flat strip in a level state at a predetermined temperature in a vacuum chamber and while in the vacuum chamber applying a liquid coating of resin to the entire first side of the strip and the pair of rounded edges and extending onto the second side of the strip from each of the edges a distance at least as great as about 0.25" to prevent turn to turn discharge.

Abstract: A method of coating ferrous and nonferrous metal substrates that provides cathodic protection from corrosion by coating with inherently conductive polymers and sacrificial anodic metal particles. This method of coating is characterized by its conductivity and cathodic corrosion resistant qualities.

Abstract: In general terms, the method of the present invention is one for providing an anodic coating to a member having a metal surface being subject to oxidation. In broadest terms, the method comprises the steps of: (a) obtaining a member having a ferrous metal surface (i.e. the term "ferrous" intended as meaning containing iron without regard to oxidation state), the metal surface having one or more layer(s) of oxidized metal; (b) removing the layer(s) of oxidized metal from the ferrous metal surface; and (c) depositing one or more layer(s) of an emeraldine base polyaniline polymer onto the ferrous metal surface.

Abstract: A ceramic, metal, or metal alloy surface is covered with lithium permangae which is then thermally decomposed to produce a corrosion resistant coating on the surface. This coating serves as a primer coating which is preferably covered with an overcoat of a sealing paint.

Abstract: Reflective aluminum trim for use in automobiles, trucks, boats and a variety of household and industrial appliances is produced by forming aluminum strip into a desired shape, followed by selective application of a fluoropolymer protective coating to only a partial portion of the show surface of the shaped strip and the application of a thermoplastic to the portions of the show surface not covered by the protective coating. The resulting trim piece has a highly reflective aluminum show surface which has a high distinctness of reflected image. The thermoplastic is preferably co-extruded onto the shaped aluminum strip using an adhesive to bond the thermoplastic directly to an un-coated portion of the aluminum surface. Prior to application of the thermoplastic, a single heating step may be used to cure both the protective coating and the adhesive.

Abstract: Processes for producing improved environmental protection, corrosion resistance and improved paint adhesion for metals; e.g., ferrous, aluminum, or magnesium alloys; and other surfaces upon contact is disclosed. The processes comprise use of one or more Group IV-A metals such as zirconium in an acidic solution with one or more oxyanions or other non-fluoanions to stabilize and solubilize the metal while fluorides are specifically excluded from the processes and compositions. The processes optionally contain pretreatment stages that serve to activate a surface and/or promote formation of a Group IV-A metal oxide matrices through use of an oxygen donor. The compositions are at a pH below about 5.0 and is preferably in a range between about 1.0 and about 4.0. The coatings may contain surfactants, sequestering agents, or organic additives for improved corrosion protection and paint adhesion. The substrate may be treated by immersion, spray, fogging or rollcoat.

Abstract: A method for manufacturing a guide pin is disclosed, which comprises maching a metal substrate core; and depositing an insulative ceramic coating by the Bernex chemical vapor deposition process, wherein the Rockwell C hardness of the metal core is greater than or equal to about 45, and the surface roughness value of the as-deposited coating are Ra less than or equal to about 35 microinches and Rmax less than or equal to about 250 microinches.

Abstract: A process for applying a polyurethane elastomeric lining for truck beds and product produced by same, including a kit, enabling do-it yourself application by a truck owner of a protective coating of the inner surfaces which define a truck bed, which coating is effective for preserving the durational utility of the involved interior walls without the need for professional assistance or specialized equipment.

Abstract: Improved autodeposited coatings on metallic surfaces are formed by contacting the metallic surfaces with an autodepositing composition comprising an acidic aqueous coating solution containing dispersed solid resin particles of either an internally stablilized or externally stabilized vinylidene chloride polymer, an exemplary internally stabilized polymer being prepared from vinylidene chloride and a monomeric surfactant which includes an inorganic ionizable group, and an exemplary externally stabilized polymer being prepared from vinylidene chloride and a reactive comonomer, the resulting resin particles having surfactant adsorbed thereon, said autodeposited coatings having extremely good corrosion resistant properties without treatment with a reaction rinse such as a chromium rinse.

Abstract: Deleterious effects of friction between bullets and the barrel of a firearm are reduced by improving the lubricity of the surface of the bullet by coating the same with molybdenum disulfide according to a method that includes heating the bullets to be coated to open the pores thereof and then agitating the bullets and molybdenum disulfide with an impacting instrumentality to drive the molybdenum disulfide against the bullet to be deeply absorbed therein. The bullets are also polished and burnished.

Abstract: A method of forming a sufficiently thin, highly amorphous and homogeneous glass-like carbon film on the surface of a titanium metal with high efficiency. In this method, the surface of a titanium metal is polished by e.g. buffing with emery paper and alumina or chromium suspension as polishing agents to form a mirror surface. A dense and rigid titanium oxide film layer is formed on the mirror surface. The surface of the titanium oxide film is then subjected to plasma heating in an atmosphere containing a hydrocarbon gas under a gas pressure of 0.1-30 Torr at 400-1100.degree. C. to form a glass-like carbon film thereon.

Abstract: A dummy plate for offset printing comprising essentially a mechanically and/or electrochemically roughened, anodically oxidized and hydrophilized aluminium support in the form of a plate, sheet or band and a non light-sensitive, water-soluble layer coated thereon, and characterized in that the layer contains at least one organic polymer with a water-solubility of at least 2 g/L at room temperature and at least one inorganic compound reacting as an acid.

Abstract: A method of forming a topcoat from a base coat and clear coat comprises applying to the surface of an undercoat or intercoat a base coat containing (A) a compound having at least two epoxy groups per molecule, (B) a compound having at least two carboxyl groups per molecule, wherein at least one of compounds (A) and (B) possesses hydroxyl groups, (C) a melamine resin with from 0.3-3.5 imino groups, from 2-5.5 alkyl ether groups per triazine nucleus and having a polymerization degree of from 1.6-3.5, and (D) pigment(s); then applying a clear coat prepared from (A) a compound having at least two epoxy groups per molecule and (B) a compound having at least two carboxyl groups per molecule, and curing by heating.

Abstract: In a process for applying a metallic adhesion layer for thermally sprayed ceramic thermal barrier coatings to metallic components, the surface which is to be coated being cleaned in a first process step, so that the metallic surface is free of grease and oxide, a binder is applied to the metallic surface of the base material in a second process step. Metallic adhesive powder is applied uniformly to the binder in a third process step and solder powder, which has a smaller particle size than the adhesive powder, is applied uniformly to the binder in a fourth process step. After drying the binder, a heat treatment is carried out for the purpose of soldering. The adhesion layers produced in this way are rough and provide a considerable positive lock for the ceramic thermal barrier coatings which are to be sprayed thereon.

Abstract: A protective mask is formed of an annular magnetic sheet. Such a sheet may be used to cover annular surfaces to be protected. Adhesive is formed on one side of the sheet. In use, a fluid impervious sheet is adhered to the first side and across the central opening of the annular magnetic sheet. A method of protecting a metallic workpiece during treatment, the metallic workpiece having a portion to be protected during treatment, for example a raised face of a flanged pipe, the method comprising the steps of magnetically attaching a protective mask to the portion of the metallic workpiece to be protected, the protective mask being formed of an annular magnetic sheet and treating the workpiece, such as by painting or sandblasting. A method of protecting a pipe during transportation of the pipe, the pipe having a flanged pipe end and a pipe bore, the method comprising the steps of magnetically attaching a circular protective sheet to the flanged pipe end over the pipe bore; and transporting the pipe.

Abstract: The present invention relates to a bioactive conjugate adapted to coat a metal implant outer surface, which has the following structural formula I:--R--X--P Iwherein,R is O or S, adapted to be covalently attached to an implant surface;X is selected from a bond, linear or branched chains of 1 to 30 covalently attached atoms of at least C, N, O Si or S, rings of 1 to 20 covalently attached atoms of at least C, N, O Si or S, and a combination thereof; andP is a bioactive molecule moiety which promotes tissue growth, stabilization and integration, and wherein said moiety retains its biological activity.

Abstract: An antistatic film comprising a chemically adsorbed film of straight chain molecules each containing a conductive group and provided on a chargeable substrate via covalent bonds each containing a Si group, said chemically adsorbed film having a conductivity of 10.sup.-10 S/cm or above. With the antistatic chemically adsorbed film according to the invention, conductive functional groups are secured via chemically adsorbed molecules and by siloxane bonds to the surface of a substrate material such as ceramics, glass, synthetic resins or synthetic fibers, a film, a plate, an display screen surface, a light-emitting tube. Thus, the film provides an antistatic effect and does not separate. In addition, this chemically adsorbed film has a thickness at the nanometer level and is thus excellently transparent, as well as capable of preventing contamination of the substrate surface due to charging thereof. The film is also excellently durable.

Abstract: A surface treatment, especially for titanium and aluminum alloys, forms a sol-gel film covalently bonded on the metal surface to produce strong, durable adhesive bonds between the metal and an organic adhesive without using toxic chemicals and while significantly reducing or eliminating rinse water requirements of traditional anodizing or etching processes. An aqueous sol containing an alkoxyzirconium and an organosilane with an organic acid catalyst and zirconium stabilizer is applied to etched or grit blasted substrates by dipping, spraying, or drenching, to produce bonds in a single application comparable in strength and performance to standard anodize controls. Parameters affecting performance include the sol composition, the Si/Zr ratio, the ratio of sol ingredients, the concentration of the sol, the carrier solvent, solution age, catalysts, surface pretreatment, application method, curing process, and primer used.

Abstract: A process is described for treating metal surfaces with a composition comprising an oxidizer, an acid, a corrosion inhibitor, a source of holide ions and optionally a water soluble polymer in order to increase the adhesion of polymeric materials to the metal surface.

Abstract: A multi-layer tube having a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface. The zinc layer being selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof.

Abstract: A system for selective chemical vapor deposition of polymers onto a substrate. A substrate is provided which comprises a plurality of surface regions, wherein the surface of at least one region provides a more favorable nucleation site for at least one of a polymer or polymer precursor than at least one other region. This may be an intrinsic characteristic of the substrate or may be accomplished through surface treatment of a substrate. The substrate is subjected to chemical vapor deposition of a reactive monomer, producing a polymer coating which is substantially thicker in the regions of favorable nucleation than in the regions of unfavorable nucleation.

Abstract: A method and composition for coating a metal for use in connection with improving corrosion resistance and paint adhesion. The composition is a non-corrosive ester cross-linked polymer system having a plurality of carboxylic functional groups and a plurality of hydroxyl groups. The polymer system may be a bifunctional copolymer or the reaction product of a first polymer having a plurality of carboxylic functional groups (e.g. polyacrylic acid or polymethylvinylmaleic anhydride), and a second polymer having a plurality of hydroxyl groups (e.g. polyvinyl alcohol). The resulting reaction product of these two polymers is a cross-linked polymeric blend. A compound of a Group IV-B element may be added to this polymer blend to increase the degree of cross-linking and improve paint adhesion and corrosion resistance. Such a Group IV-B compound may be an acid such as fluozirconic acid, fluotitanic acid or fluohafnic acid, or a salt such as ammonium zirconium carbonate.

Abstract: A method and composition for coating a metal for use in connection with improving corrosion resistance and paint adhesion. The composition is a non-corrosive ester cross-linked polymer system having a plurality of carboxylic functional groups and a plurality of hydroxyl groups. The polymer system may be a bifunctional copolymer or the reaction product of a first polymer having a plurality of carboxylic functional groups (e.g. polyacrylic acid or polymethylvinylmaleic anhydride), and a second polymer having a plurality of hydroxyl groups (e.g. polyvinyl alcohol). The resulting reaction product of these two polymers is a cross-linked polymeric blend. A compound of a Group IV-B element may be added to this polymer blend to increase the degree of cross-linking and improve paint adhesion and corrosion resistance. Such a Group IV-B compound may be an acid such as fluozirconic acid, fluotitanic acid or fluchafnic acid, or a salt such as ammonium zirconium carbonate.