Abstract: A method for temporarily protecting at least one passage hole in a metal-based substrate from being obstructed by at least one coating applied over the substrate is disclosed. The method includes the following steps:(a) filling and covering the hole with a curable masking material which forms a protrusion over the hole;(b) curing the masking material;(c) applying at least one coating over the substrate and the masking material, wherein the coating does not substantially adhere to the protrusion; and then(d) removing the masking material to uncover the passage hole.Usually, there are an array of holes, and they serve as conduits for cooling gasses for an engine component. The curable masking material exhibits substantially non-Newtonian flow characteristics which make it especially suitable for forming protrusions of the proper size and shape on the coating-side of an engine part.

Abstract: The invention concerns a use for a water-containing refractory ceramic cast material based on a hydration-sensitive metal oxide such as MgO and containing carbon, a dispersing agent and a reactive silicic acid for forming a monolithic lining for a metallurgical smelting vessel.

Abstract: A method and a pre-form for strengthening a substrate structural member. Layers are applied to a surface of a substrate where the layers include dry fibre reinforcement materials. A reduced pressure is then applied to the layers and a curable resin is introduced to the layers such that the resin is drawn therethrough until the interstices therein are substantially filled with the resin. The resin is then cured. The layers are preferably woven fabric and may include resin distribution layers of relatively low weave density and high permeability and reinforcement layers of higher weave density and lower permeability. The layers may be provided as a pre-form.

Abstract: The present invention relates to a process for the preparation of a multicoat refinish, in which process a metallic basecoat is applied by spraying to the pretreated old finish and dried and then a clearcoat is applied to the basecoat and the clearcoat is dried together with the basecoat. The process is characterized in that the aqueous basecoat composition is applied such thata) in a first spray pass the aqueous basecoat composition is applied to the pretreated area of the old finish until a boundary is reached,b) the area of the old finish coated in step (a) is then coated in a second spray pass with the aqueous basecoat composition,c) steps (a) and (b) of the process are repeated in the region of the old finish which adjoins the previously coated region of the old finish, again until a boundary is reached, andd) process step (c) is carried out until the entire component to be coated is provided with a basecoat.

Abstract: A nail polish or nail polish/enamel composition is applied to imperfections, errors, distortions or porosities in the model. The composition is thus used to correct the model's shape. The composition can be added at room temperature, and avoids the need to utilize high temperatures in the process of building the model. The nail polish or nail polish/enamel compositions may be utilized to add jewelry design elements to the model.

Abstract: A nickel-base gamma-sigma intermetallic matrix composite material suitable for forming gas turbine engine components and structural coatings for such components. The composite material contains, in weight percent, about 20 to 50 chromium, about 0 to 32 molybdenum, and about 0.5 to 7 silicon, with the balance being nickel and incidental impurities. In addition, the composite material may contain aluminum and titanium in amounts of up to about 7 and 3 weight percent, respectively. The resulting intermetallic matrix composite material is characterized by a sigma volume fraction of greater than 30 percent, preferably at least about 50 percent, and may have a dendritic, fibrous or lamellar microstructure. The composite material can be cast to form a component, or deposited by known techniques to form a structural coating on a component.

Abstract: A process for blending paint to match an existing finish. A first color imparting component is first provided, in an amount proportionate to a paint formulation, and mixed with a base coat reducer to obtain a first reduced component. A second color imparting component is also provided, in an amount proportionate to the amount of the first color imparting component according to the paint formulation, and mixed with a base coat reducer to obtain a second reduced component. A portion of the first reduced component is then mixed with a portion of the second reduced component to obtain a base paint. The base paint is tested by applying the base paint onto a surface and allowing it to dry to obtain a painted surface, and comparing the painted surface with an existing finish after simulating a clear coat finish with a lustrous liquid.

Abstract: A method and system for repairing and restoring chipped and scratched regions of an automotive body, the damage being characterized by recesses in the exterior, involves the use of color-matched paint repair material, and includes the steps of cleaning the recesses, coating the recesses and adjacent area with a lubricating agent that also will retard the ability of the repair material to bond with surfaces of the damaged region. The paint-repair material is deposited on undamaged surfaces adjacent the recesses, and then a blade comprised of a soft resilient plastic material is slidably moved over the damaged region to spread and move the deposited paint over the damaged region causing the paint-material to be deposited in the recesses and to remove most of the excess material from the undamaged surfaces adjacent to the recesses. After a short drying interval, final steps include wiping away excess repair material soft cloth wetted with a suitable solvent.

Abstract: Disclosed herein is a method of preparing a game ball mold cavity for application of a coating system. A dual region coating system for a game ball mold and a coating application method also are disclosed. The mold preparation method provides for a longer use of a game ball mold than results when conventional mold preparation techniques are used. The dual region coating system comprises a fluorocarbon polymer in the hemispherical opening of the mold cavity, and a metal, such as nickel, impregnated with a fluorocarbon polymer on the land area. The dual region coating system of the invention is particularly useful for making golf ball cores containing zinc-diacrylate and/or zinc dimethacrylate, as these materials tend to adhere to the walls of a mold cavity.

Abstract: A process for refinishing a motor vehicle byselecting and mixing two or more pigmented base paints from a series of master colors, each base paint having a hydroxyl functional polymer selected from the group consisting of an acrylic addition polymer, a polyester polymer and mixtures thereof, having a number average molecular weight of 600 to 10 000 and a hydroxyl value of 5 to 500, andadding a hardener of a polyisocyanate crosslinker to react and crosslink with said hydroxyl functional polymer in each base paint to form a thermosetting pigmented composition, the improvement in the process comprising;adding a catalyst mixture of a tin catalyst and a polyfunctional thiol having at least three thiol groups per molecule in which the ratio of the number of moles of thiol groups from the polyfunctional thiol to the number of moles of tin from the tin catalyst is 1:1 to 500:1, to form a catalyzed pigmented coating composition having a more constant irrespective of the pigments contained in the two or more basic pain

Abstract: The present invention relates to a pipe treatment process that is a portable, field-applied, coating process. The process produces a two-layer composite protective coating system with a finished, seamless, chemical bond within its interlayers as well as to adjacent coating materials, The process is suitable for both metailic and concrete substrates, which may or may not be cathoadically protected, and may be used to either coat now or to recoat e.g.

Abstract: A process for joining two parts of which at least one is made of an intermetallic material comprises:mixing elemental powders to form an intermetallic compound of the same type as that of the intermetallic part or parts;compacting and forming an intermediate part from the said compound at a temperature below that of the reaction sintering temperature of the compound;placing the intermediate part in position between the two parts to be joined;subjecting the assembly of parts to a first thermal cycle so as to effect a reaction sintering of the intermediate part and a consolidation of the assembly; and,subjecting the assembly to a second thermal cycle at a temperature above 0.8 of the fusion temperature of said intermetallic compound so as to effect a diffusion treatment and mechanical consolidation of the assembly.The process may also be adapted to form a coating or a repair of a part using an intermetallic material.

Abstract: The surface of a member formed of at least one kind of ceramics, metals and C/C composites, is covered with an outermost surface oxide covering layer having a stability against the environment in the atmospheric air at 1500.degree. C.; and a self-recoverable layer as an intermediate layer formed between the outermost surface oxide covering layer and the surface of the member. The self-recoverable layer has an oxidizing rate greater than that of the outermost surface covering layer for recovering cracks generated on the outermost surface covering layer, and a compound produced by the self-recoverable layer has the same phase as in the outermost surface covering layer. To achieve the optimum self-recovering function at high temperatures, the outermost surface oxide covering layer may be made of a stable oxide having a vapor pressure of 1.times.10.sup.-4 /m.sup.2 or less in the atmospheric air at 1500.degree. C.

Abstract: A method of repairing a thermal barrier coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly suited for the repair of thermal barrier coatings composed of a metallic bond layer formed on the surface of the article, and a columnar ceramic layer overlaying the bond layer. The method entails the steps of cleaning the bond layer exposed by localized spallation, treating the bond layer so as to texture its exposed surface, and then depositing a ceramic material on the surface of the bond layer so as to form a ceramic repair layer that completely covers the bond layer. Deposition of the repair layer can be carried out such that its upper surface projects above the adjacent ceramic layer, followed by abrading the repair layer to a height substantially level with the ceramic layer.

Abstract: For efficient waxing of the running surface of a workpiece such as a snowboard, one or more skis, or a toboggan, the invention provides a single wax-heating element in the form of an elongate flexible sheet sized to fully cover the running surface when upside down and horizontally oriented. The single sheet of the heating element also provides articulating connection between an array of like transverse elements which gravitationally load the heating element sheet into self-adapting conformance with flat and convexly curved features of the workpiece, so that a wax-laden sheet draped over the running surface of the workpiece can be gravitationally loaded by the heating element sheet.

Abstract: The present invention relates to an applicator for flowable materials which comprises a generally cylindrical housing having a chamber, a discharge opening, a wick projecting through said discharge opening, and a projecting structure for shielding the user from flowable materials and for preventing placement of the applicator in inappropriate receptacles. Further, the present invention relates to a storage and shipping rack for said applicators and to a method of dispensing flowable materials onto a surface. Preferably, the applicator is filled with metal coating and treating compositions such as aqueous acidic chromate compositions. Most preferably, the acidic compositions contain a very low concentration of a fluorinated surfactant.

Abstract: A method for applying multiple layers of coating compositions on a previously painted substrate by first applying a primer coating and then applying over the primer coating a top coating that matches the color of the painted substrate at less than complete hiding to achieve a color match of the top coating and the previously painted substrate; the improvement used is to apply a gray or white primer coating at complete hiding having a reflectance in its dried state essentially the same as the top coating measured at the wave length of minimum absorption of the top coating.

Abstract: A decorative emblem for a vehicle comprises an oval bezel and a transparent lens. A groove with an angled sidewall is formed in the top surface of the bezel. The sidewall forms an angle with the bottom wall of the groove between 88.degree.30' and 82.degree.30' around the oval bezel so that the sidewall overlies the bottom wall making the groove wider at its bottom than at its top to lock the lens in place. The lens covers the top surface and is formed thereon by pouring a liquid lens material on the top surface of the bezel filling the groove. The liquid lens material cures to a hardened condition and the angled sidewall locks the lens in position over the top surface. The lens is transparent so that colors and designs on the bezel are visible.

Abstract: The invention relates to a process for producing a multicoat refinish, in which a metallic basecoat is sprayed on the prepared damage site and the adjacent regions of the old finish, so that it is opaque (hiding) in the region of the damage site and gradually runs out in the region of the old finish. Finally, a clearcoat is applied to the basecoat and, if desired, to the adjacent regions of the old finish.The process is characterized in that1. during the application of the basecoat composition to the adjacent regions of the old finish, the spraygun is inclined diagonally to the damage site, and2. during the application of the basecoat composition, a normal or only slightly reduced (3.0-4.5 bar) spraygun pressure is used.

Abstract: A method of improving the oxidation resistance of a platinum modified aluminide coating formed on a nickel base superalloy substrate, comprises providing a platinum layer on the substrate, heating the substrate in a coating retort to a temperature of at least about 1000.degree. C., forming external of the coating retort a high purity coating gas comprising hydrogen and aluminum trichloride, and introducing the coating gas into the coating retort to contact the heated substrate to form an outwardly grown, single phase [(Ni,Pt)]Al] platinum modified aluminide coating having reduced concentration of at least one of a substrate substitutional alloying element and a surface active tramp element selected from at least one of B, P, and S in said coating as compared to a platinum modified aluminide coating formed at a lower temperature.

Abstract: An increased efficiency method and apparatus for lining a section of pipe with a cement mortar. After a wet cement mortar has been applied to a cleaned interior surface of a pipe, carbon dioxide is introduced into the freshly lined section of the pipe in such quantity that a crust of calcium carbonate will be formed on the interior surface of the wet cement mortar lining as the carbon dioxide reacts with calcium compounds of the wet cement mortar in a relatively short period of time. This crust is provided to protect the underlying mortar from scouring, while tolerating a low-velocity flow of water, until the normal hardening of the underlying mortar through hydration can take place so as to substantially reduce the out-of-service time of the section of pipe which is being lined.

Abstract: A system for sealing an exposed area of a surface coated with a radiofrequency signal absorbing coating includes a heat-responsive compound that transforms from a solid state to viscous melted state at temperatures above a predetermined temperature and that returns to a solid state after cooling to temperatures below the predetermined temperature. The heat-responsive compound has a radiofrequency absorbing material for absorbing radiofrequency signals at approximately equal frequency to those that the radiofrequency signal absorbing coating absorbs. An applicator applies the heat-responsive compound in the viscous melted state to cover the exposed areas. An absorptive tape conceals any gap or fastener associated with the exposed area and absorbs radiofrequency signals having approximately equal frequencies to those of the radiofrequency signal absorptive coatings.

Abstract: The subject matter of the present invention is a multicoat metallic refinishing process in which a coating material is first applied to the prepared area of damage and to the adjacent regions of original finish. A metallic basecoat is applied to this first coating in such a way that the basecoat hides the area of damage and tapers off on the coating. A clearcoat is then applied to the basecoat and, if appropriate, also to the adjacent regions of the original finish.In the process an aqueous metallic basecoat and an aqueous coating material containinga) 5 to 50% by weight, based on the total weight of the coating material, of at least one water-thinnable or water-dispersible film-forming material,b) 0 to 20% by weight, based on the total weight of the coating material, of at least one organic solventc) conventional auxiliaries and additives, if appropriate,are applied to the prepared area of damage, the dry film thickness of this aqueous coating material being between 2 and 50 .mu.

Abstract: The method includes sealing the stator bar end connections from within the stator bar end fitting. Particularly, a low viscosity epoxy is initially applied from within the chamber of the end fitting by use of a boroscope and a syringe-type applicator, the low viscosity epoxy being applied to all joints between the adjacent strands of the stator bar and between the fitting and the outermost strands of the stator bar. A high viscosity epoxy is then applied over the low viscosity epoxy using the boroscope and applicator to provide a thick barrier seal between the liquid coolant in the chamber and the brazing material. The epoxy is then cured. The process ensures that the brazing material is isolated from the liquid coolant by the barrier seal whereby potential leaks are prevented and partially developed leaks or leaks extant are arrested because sealant material is disposed at the liquid coolant/braze interface.

Abstract: Aqueous spot fillers, containing at least one water dilutable, olefinically unsaturated binder, conventional pigments, fillers and adjuvants, corresponding to a solids content of50-90 wt %10-40 wt % of water and0-10 wt % of one or more organic solvents,the water dilutable, olefinically unsaturated binders containing anionic groups or groups convertible to anionic groups, corresponding to an acid number of 25-175 and being the reaction products ofA) 40-80 wt % of one or more polydiene oils,B) 5-25 wt % of one or more polymerisable olefinically unsaturated monomers containing anionic groups or groups convertible to anionic groups,C) 0-10 wt % of one or more bis-(2-oxazolines) andD) 0-40 wt % of one or more ethylenically unsaturated monomers.the percentages of A), B), C) and D) adding up to 100 wt %.The spot fillers can be used for the preparation of multi-layer coatings, especially on motor vehicles.

Abstract: A method of restoring a damaged surface of a metal substrate to a functional conditions through application of a filler material consisting essentially of bismaleimide and tungsten disulfide having a ratio of 10:1. The bismaleimide having been cured through the following sequence to maintain the durability thereof when exposed to aromatic fuels at temperatures up to 500.degree. F., the temperature of the bismaleimide is uniformly raised from room temperature to 350.degree. F. in one hour and maintained at 350.degree. F. for an additional hour and thereafter the temperature is immediately raised to 475.degree. F. and maintained at 475.degree. F. for an additional two hours.

Abstract: This invention is a method for providing ultraviolet light absorbers into a cured polymeric material such as paint which comprises the steps of providing a coating of a composition comprising ultraviolet light absorber (UVA) on the polymeric material and heating the UVA containing coating to an elevated temperature for a time sufficient to cause the UVA to diffuse into the cured polymeric material.

Abstract: A method for repairing and reinforcing pressure-supporting hollow bodies, in particular deteriorated underwater pipelines, using a tape formed from a plurality of layers.

Abstract: A method for repairing a basecoat/topcoat finish or coating comprised of a silane topcoat. A silane curing catalyst is added to the repair basecoat composition to improve recoat adhesion.

Abstract: A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together by fibrillated polytetrafluoroethylene. This is applied to the portion of the area to be cleaned and is subject to heat treatment at about 1800.degree. F. and a reducing atmosphere of preferably hydrogen. This effectively cleans only the area covered by the tape. Further, the tape and binder format acts to force fluoride ions into the cracks on the surface providing a significantly improved cleaning operation.

Abstract: A method for refinishing vehicle wheels includes removing the wheels with the tires thereon from the vehicle. The locations of the wheel weights are then marked on the tire and the weights are removed. The wheel and tire are then placed in a blast cabinet and the existing coatings on a face surface of the wheel are removed using a plastic blast media. Thereafter corrosion of the metal of the face surface is removed by blasting with rigid glass blast media. The tire is removed from the cabinet and any excess media is removed with an air blast. The tire is masked to prevent overspray. Thereafter the wheel is coated with one or more layers of coating. The coated wheel is then heated to facilitate curing, and the wheel weights are reinstailed prior to the coating being fully cured. The method of the present invention is particularly well-adapted for performance in a mobile service vehicle that can travel to the vehicle whose wheels are to be refinished.

Abstract: A pack cementation coating tape such as a nickel aluminide coating tape includes a reactive metal such as aluminum, a filler such as aluminum oxide, and a halogen carrier such as ammonium chloride held together by fibrillated polytetrafluoroethylene. The tape is useful in coating localized areas of nickel containing alloys to provide a nickel aluminide surface coating. The coating is formed by positioning the tape over the metal surface and heating the tape to a temperature of about 1250.degree. F. wherein the element metal such as aluminum reacts with the halogen carrier and in turn reacts with nickel on the surface of the nickel alloy to form the nickel aluminide coating. A masking tape formed from a separating layer, a brazing alloy layer and a nickel layer can be used to mask localized portions of the surface to prevent coating at these areas.

Abstract: A method of restoring a damaged surface of a substrate to a functional condition through a filler material consisting essentially of tungsten disulfide epoxy resin having a 10:1 ratio. The filler material is cured after being applied to the damaged surface by uniformly raising the temperature to a cure temperature of the epoxy to allow any volatiles to evaporate without the creation of voids in the surface such that the resulting porosity prevents corrosion of the substrate when exposed to aromatic fuels at temperatures of 350 degrees F.

Abstract: A improved process for applying a clear coat/color coat composition to a substrate in which a color coat is applied to a substrate and then a clear coat is applied over the color coat; the improvement used therewith is a clear coating composition having a film forming binder solids content of about 30-70% by weight and an organic liquid carrier, wherein the binder contains about(A) 50-80% by weight, based on the weight of the binder, of an acrylic polymer of polymerized monomers of styrene, a methacrylate monomer from the group of methyl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate or any mixtures thereof, a second methacrylate monomer from the group of n-butyl methacrylate, isobutyl methacrylate or ethyl hexyl methacrylate or any mixtures thereof and a hydroxy alkyl methacrylate or acrylate each having 1-4 carbon atoms in the alkyl group, where the polymer has a number average molecular weight of about 5,000-20,000 determined by gel permeation chromatography and a calculated Tg of at least 4

Abstract: Surface portions of metal materials, in particular artifacts which are of interest from historical, artistic or archeological perspectives, are protected from atmospheric agents and pollutants, and are re-aggregated, by reversibly applying a protecting and aggregating material comprising a copolymer of vinylidene fluoride having 55-85 mol % of vinylidene fluoride, 10-45 mol % of hexafluoropropene and 0-30 mol % of tetrafluoroethylene. Such polymers are applied onto the surface to be protected as solutions in volatile solvents.

Abstract: Disclosed is a process for repairing removed or damaged parts of plastic coating on metal tubing characterized in that the coating material or the adhesive for patches or bands is an adhesive polymer composition comprising by weight:A) from 59% to 94% of polypropylene, propylene/ethylene random copolymer, propylene/ethylene/1-butene random copolymer or mixtures thereof with one or more plastomeric polymers selected from the group consisting of ethylene/vinyl acetate copolymers, LDPE, HDPE, polyamides and polyurethane;B) from 5% to 40% of a polymer or a mixture of elastomeric polymers selected from the group consisting of EPR, EPDM, SEBS block copolymers, SBS block copolymers and ethylene/ethyl acrylate copolymers;C) from 1% to 10% of polypropylene modified with from 1 to 10% of maleic anhydride, isophorone bismaleamic acid or acrylic acid; andD) from 0% to 3% of carbon black.

Abstract: An aluminide coating is applied to a portion of the surface of an article that already has a thermal barrier coating system in place over another portion of its surface. The portion of the surface to be coated is contacted, at elevated temperature, with an aluminide coating source material that is a mixture of from about 18 to about 45 weight percent of a metallic source of aluminum and the balance ceramic particles. The metallic source of aluminum may be pure aluminum or an aluminum-containing alloy. No halide activator is present in the aluminide coating source material.

Abstract: An improved method for lining a section of pipe with a cement mortar. After a wet cement mortar has been applied to a cleaned interior surface of a pipe, carbon dioxide is introduced into the freshly lined section of the pipe in such quantity that a crust of calcium carbonate will be formed on the surface of the wet cement mortar lining as the carbon dioxide reacts with calcium compounds of the wet cement mortar in a relatively short period of time. This crust is provided to tolerate a low-velocity flow of water to protect the underlying mortar from scouring until the normal hardening of the underlying mortar through hydration can take place so as to substantially reduce the out-of-service time of the section of pipe which is being lined.

Abstract: A process for converting the lubrication system of an internal combustion engine from a system using an oil containing metallic and chemical friction modifiers, to an oil substantially devoid of such modifiers. A solvent and a perfluoroethylene resin are added to the existing oil in the lubrication system of the engine in sufficient amounts to remove oil residue or varnish from the surfaces within the lubrication system, and to coat the surfaces with perfluoroethylene resin. The oil, solvent and perfluoroethylene resin are circulated throughout the lubrication system for a time sufficient to remove oil residue or varnish from the surfaces within the lubrication system of the engine, and to coat the surfaces with perfluoroethylene resin. The oil, solvent and residual perfluoroethylene resin are evacuated from the lubrication system of the engine, and an oil substantially devoid of metallic and chemical friction modifiers is added to the lubrication system of the engine.

Abstract: A kit and method for testing the color of paints to be applied to painted surfaces having primers or sealers thereon to determine if a paint color matches that of a painted surface. Preferably, the kit comprises a plurality of testing members removably mounted therein or thereon. The testing members have different primers or sealers thereon corresponding to those on different known painted surfaces. When a paint is to be applied to an area of a specific painted surface, the paint is first applied to one of the testing members having thereon the same primer or sealer as that on the painted surface. The painted testing member then is moved to a position adjacent the painted surface to compare the color of the paint on the testing member to that of the painted surface.

Abstract: A kit and method for testing the color of paints to be applied to painted surfaces having primers or sealers thereon to determine if a paint color matches that of a painted surface. Preferably, the kit comprises a plurality of testing members removably mounted therein or thereon. The testing members have different primers or sealers thereon corresponding to those on different known painted surfaces. When a paint is to be applied to an area of a specific painted surface, the paint is first applied to one of the testing members having thereon the same primer or sealer as that on the painted surface. The painted testing member then is moved to a position adjacent the painted surface to compare the color of the paint on the testing member to that of the painted surface.

Abstract: The present invention relates to an improvement in a lining method for internal surfaces of pipes in multi-branched pipings such as water pipes, gas pipes, etc. in which a plurality of branched pipelines are branched from a main pipeline, and particularly to a shaping method for a lining surface.In a multi-branched piping in which a plurality of branched pipelines are branched from a main pipeline, a coating is poured into a pipeline from one end of a main pipeline or each of the branched pipelines, gas is then fed to thereby line the internal surface of the pipeline, a sponge consisting of an elastic foam body having a larger diameter than the inside diameter of the pipe constituting the pipeline, said foam body being made of synthetic resin and having a continuous foam, is inserted from an end of each branched pipeline, and the sponge is then pushed with the aid of air pressure whereby the lining surface can be shaped to have substantially uniform film thickness.

Abstract: Chemically etching the surface of galvanized steel with a metal salt that is more electropositive than zinc provides improved adhesion for an unsaturated polyester resin based putty. The invention is particularly suitable for automobile body repair, and the putty can then be shaped to conform to the desired contour of the automobile body.

Abstract: The invention concerns a patch or repair assembly for repairing vehicles, installations and parts. The assembly comprises at least one photocurable prepreg fabric, a UV transparent release film on top of the fabric and a UV blocking film over the release film. There is also disclosed a method of repairing using the assembly of the invention.

Abstract: A method of sealing a joint in a gas main comprising boring a hole in the wall of the main at a point spaced from the joint, inserting into the main through the hole so formed a sealant spraying means, moving the spraying means to the site of the joint, pumping a settable anaerobic type sealant to the spraying means, causing the spraying means to spray the sealant onto the inner wall of the main to form a layer covering the joint, removing the spraying means through the hole and allowing the sealant to set.

Abstract: A method for injecting a chemical barrier into a surface aperture is provided. The method provides a vacuum to a work site to evacuate the air from the work site. Then, an injector head is located and retained at the work site. The injector head has a gasket that forms a seal around the work site. Pressurized fluid is conveyed to the work site through a first conduit in the injector head. Any unused fluid is conveyed away from the work site by a second conduit in the injector head.

Abstract: A thermally activated method of depositing a metal on a localized microscopic portion of a substrate, that can be carried out at relatively low process temperatures, and that is particularly useful for depositing metals in an amount and purity sufficient for electrical conductivity on substrates containing microelectronic circuits and devices or their respective precursors.

Abstract: A defective metallization layer is removed from the top of an electronic component such as an integrated circuit or a copper/polyimide substrate by polishing with a rotating pad and a slurry. Non-defective underlying metallization layers are preserved and a new metallization layer is fabricated to replace the defective layer.

Abstract: An apparatus and method for plating metal on a conductor and/or across gaps on insulating substrates is described incorporating two probes, a probe positioner, first circuitry for applying alternating-current electrical power wherein the magnitude of the voltage is controlled as a function of time, and second circuitry for applying alternating-current electrical power wherein the magnitude of the current is controlled as a function of time. The invention overcomes the problem of providing an automatic apparatus for reliably repairing defective wiring or completing seeded sections of wiring having a wide range of initial thermal and electrical characteristics.

Abstract: A buffing composition for imparting very fine finishes to automobile surfaces. The buffing composition contains non silicone-containing materials and comprises alumina abrasive and a synthetic wax dispersed in a liquid medium. The liquid medium can be a solvent, water, a hydrocarbon oil, or mixtures thereof. The buffing composition can optionally contain other additives or modifiers such as wetting agents, thickeners, stabilizers, preservatives, emulsifiers, dyes, pigments and perfumes.