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| Number | Title | Issue Date |
| 6060122 | Corrosion protective cleaning agent for tin-plated steel 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 surfactant... | 05/09/2000 |
| 6040280 | Lubricant and surface conditioner suitable for conversion coated metal surfaces An excellent lubricant and surface conditioner layer on formed metal surfaces, particularly aluminum cans that have been previously provided with a chromium oxide conversion coating, can be formed by contacting the cans with an aqueous lubricant and surfa... | 03/21/2000 |
| 6033492 | Composition and process for autodeposition with modifying rinse of wet autodeposited coating film The uniformity of gloss of a dried autodeposited resin film on a metal surface can be increased by rinsing the wet autodeposited film initially formed with an aqueous modifying rinse having a pH from 6 to 11 and comprising from 0.2 to 10.0 g/L in total of... | 03/07/2000 |
| 6027580 | Hydrophilicizing post-treatment over chromate conversion coating Substantially improved hydrophilicity can be provided to a metal substrate, particularly an aluminum alloy of the type used for heat exchanger fins, that has been previously provided with a conventional chromium oxide conversion coating, by drying into pl... | 02/22/2000 |
| 6013142 | Composition and process for preventing blistering during heat treating of aluminum alloys Aluminum alloys that are susceptible to damage by High Temperature Oxidation during solution heat treatment are protected against such damage by a coating containing sodium fluoroborate and/or other fluorine-containing-gas-generating material. The coating... | 01/11/2000 |
| 6005668 | Detecting defects in plastic and similar surfaces A "highlighter" liquid for detecting cosmetic defects in non-metallic surfaces, particularly those intended for high quality automotive finishes comprises organic substances each molecule of which contains at least one continuosly chemically bonded chain ... | 12/21/1999 |
| 6001186 | Acid cleaning/deoxidizing aluminum and titanium without substantial etching A chromium and ferricyanide free aqueous cleaner/deoxidizer for aluminum and titanium and their alloys contains strong acid, fluoride ions, aryl quaternary ammonium ions, and di-anionic functional substituted compounds containing at least two aryl groups ... | 12/14/1999 |
| 5998348 | Concentrate for a dihydrogen phosphate-based metal cleaning composition that does not damage plastic An aqueous liquid composition containing dihydrogen phosphate salt, surfactant(s), and a dual coordinate bonding agent for iron cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition, supporting the gro... | 12/07/1999 |
| 5965205 | Composition and process for treating tinned surfaces This invention relates to a process comprising the steps of contacting a metal surface with an aqueous composition comprising water and specific amounts by weight of phosphate ions, condensed phosphate ions and water soluble polymer molecules of a specifi... | 10/12/1999 |
| 5961809 | Chromium-free process for improving paint adhesion after thin-layer anodization A process for improving the adherence of paint applied after thin-film anodization is characterized in that the anodized metal surfaces are brought into contact with an aqueous solution containing one or more of the following components: (a) 200 to 2000 p... | 10/05/1999 |
| 5958511 | Process for touching up pretreated metal surfaces Defects in an initial protective coating, particularly a conversion coating, on a metal substrate can be touched up so as to at least equal the original coating in corrosion protection by use of a dry-in-place aqueous acidic liquid comprising: (A) fluorom... | 09/28/1999 |
| 5944908 | Cleaning compositions and processes suitable for replacing grit blasting to clean metal mold surfaces for plastics Residue that accumulates on metallic molding surfaces during repeated molding of plastics such as PVC can be removed by cleaning with an aqueous solution of a glycol or oligo-glycol monoether, an amine, and a chelating agent. The cleaner is sufficiently e... | 08/31/1999 |
| 5935656 | Short duration hot seal for anodized metal surfaces A process for sealing anodized metal surfaces is characterized by bringing the anodized metal into contact with an aqueous solution at a temperature from 75° C. to the boiling point of the solution for a time equal to from 0.5 to 2 minutes per micrometer... | 08/10/1999 |
| 5935655 | Thermally releasable barrier coating, composition therefor, and use thereof A combination of (A) a nitrogen containing water soluble polymer, (B) a water insoluble film forming polymer, and (C) gas filled, polymer walled microballoons provides a superior thermally releasable coating that (i) can be conveniently and reliably coate... | 08/10/1999 |
| 5935348 | Composition and process for preventing corrosion and reducing friction on metallic surfaces Aqueous acid treatment solution for the treatment of beverage cans, in particular of aluminum, for producing a corrosion-protective, friction-reducing coating which improves the ability to be enameled, which comprises 0.14 to 2.25 mmol/l of an alkylamine ... | 08/10/1999 |
| 5935920 | Cleaner with high wetting power Powdered, paste, or liquid media for cleaning and/or degreasing hard surfaces, especially surfaces of organic polymers (PVC) contain active ingredients of amino acids, carboxylic acids, and nonionic surfactants, possibly supplemented by action-reinforcing... | 08/10/1999 |
| 5932020 | Metal cleaning composition and process that do not damage plastic An aqueous liquid composition containing dihydrogen phosphate salt, sulfur containing surfactant, and preferably a small amount of phosphoric acid cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition ... | 08/03/1999 |
| 5919318 | Iron phosphating using substituted monocarboxylic acids Described are a concentrate, a working solution and a process for iron phosphating of metals, in which the solution contains nitrobenzene sulfonic acid and substituted short-chain monocarboxylic acids of the amino acid and/or hydroxycarboxylic acid type a... | 07/06/1999 |
| 5906973 | Process for cleaning vertical or inclined hard surfaces Aqueous detergents that thicken when mixed with water contain a combination of at least one tertiary amine oxide, at least one alkyl polyglycoside, and at least one water-soluble organic solvent. Also disclosed is the use of these detergents for cleaning ... | 05/25/1999 |
| 5891268 | High coating weight iron phosphating, compositions therefor, and use of the coating formed as a lubricant carrier Iron phosphate conversion coatings that are well adapted to serve as carriers for metal cold working lubricants, particularly such lubricants that contain polyoxyethylene adducts of long chain primary alcohols as a major lubricating component, can be form... | 04/06/1999 |
| 5891269 | Method of compacting anodized metals with lithium and fluoride-containing solutions without using heavy metals A process for sealing anodized metals without using any heavy metals comprises a first step in which the anodized metal is contacted for a period of between 3 and 30 minutes (for an anodized layer thickness of 20 μm) with an aqueous solution which has a ... | 04/06/1999 |
| 5885373 | Chromium free, low organic content post-rinse for conversion coatings A solution in water of fluorometallate and phosphate anions, divalent and/or trivalent metal cations, and polyhydroxylaminomethyl substituted polymers of vinyl phenol(s) provides an effective and economical post-rinse for conversion coatings, particularly... | 03/23/1999 |
| 5873952 | Process for forming a protective coating on zinciferous metal surfaces More nearly consistent quality of the coatings formed by contacting a zinciferous surface with an aqueous liquid treatment composition comprising water, transition metal cations, and fluorometallate anions, and, optionally, acidity adjustment agents can b... | 02/23/1999 |
| 5868872 | Chromium-free process for the no-rinse treatment of aluminum and its alloys and aqueous bath solutions suitable for this process Described is a process using a no-rinse technique for the production of a chromium-free conversion layer on the surface of aluminum and its alloys by treating with an aqueous solution having a pH between 1 and 3.5 and containing titanium and/or zirconium ... | 02/09/1999 |
| 5846342 | Surface treatment agent for zinciferous-plated steel A chromium-free aqueous liquid surface treatment agent that can impart both a good corrosion resistance and a good paint adherence to zinciferous-plated steel sheet contains as its essential components polyhydroxyaryl carboxylic acid and/or depside thereo... | 12/08/1998 |
| 5824163 | Metal cleaning process that does not damage plastic An aqueous liquid composition containing dihydrogen phosphate salt, surfactant(s), and a dual coordinate bonding agent for iron cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition, supporting the gro... | 10/20/1998 |
| 5810938 | Metal brightening composition and process that do not damage glass An aqueous liquid composition containing acid fluoride ions (i.e., HF2-) not derived from hydrogen fluoride, together with an acid stronger than acid fluoride ions, and, preferably, surfactant, is very effective in brightening unpain... | 09/22/1998 |
| 5798325 | Composition and process for barrier coating and/or cleaning paint masks An improved aqueous liquid composition for power washing of paint masks contains: organic film-forming polymer, preferably polyacrylamide; inorganic salts, preferably a combination of alkali metal pyrophosphate, metaborate, and tetraborate; and dissolved ... | 08/25/1998 |
| 5769967 | Composition and process for treating metal Heating an aqueous mixture of a fluoroacid such as H2 TiF6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide... | 06/23/1998 |
| 5733380 | Stripping compositions with mixtures of organic solvents and uses thereof Solvent assisted alkaline paint stripping can be speeded by using mixtures of (i) glycol and/or oligoglycol monoethers with (ii) unetherified glycols and oligoglycols and/or alkanolamines.... | 03/31/1998 |
| 5728234 | Composition and process for treating the surface of aluminiferous metals A surface of aluminiferous metal is brought into contact at 30° C. to 65° C. for 5 to 60 seconds with a surface treatment bath with a pH of 2.0 to 6.5 that contains phosphate ion, condensed phosphate ion, and a water soluble polymer in the following wei... | 03/17/1998 |
| 5700334 | Composition and process for imparting a bright blue color to zinc/aluminum alloy The rapid, low-temperature formation of a bright blue surface on hot-dip zinc/aluminum alloy-plated steel sheet that contains 0.1 to 60 weight % aluminum in the alloy, or on other surfaces of similar chemical composition, using conventional surface-treatm... | 12/23/1997 |
| 5691048 | Dual coated metal substrates and methods of making the same Article of manufacture and method of making the same in which a metal substrate has an undercoating is made from a combination of at least one pulverulent metal and a transition metal compound and a coating thereon containing an autodeposited resin formed... | 11/25/1997 |
| 5667843 | Pre-treating zinciferous surfaces before conventional chromating to improve rust resistance The protection against black and white rust on zinciferous surfaces by a conventional chromating treatment is improved by drying into place on the zinciferous surface before chromating a pre-treatment composition that contains hexavalent chromium ion plus... | 09/16/1997 |
| 5645650 | Composition and process for treating magnesium-containing metals and product therefrom The present invention produces a highly corrosion-resistant, highly rust-inhibiting, and strongly paint-adherent conversion coating on the surface of magnesium-containing metals, and does so rapidly and at relatively low temperatures, using a substantiall... | 07/08/1997 |
| 5634979 | Composition and method for degreasing metal surfaces The invention is a cleaning solution for degreasing metal articles which contains at least one chlorine-free nonionic surfactant with an HLB in the range of 6.5 to 9.5; a second chlorine-free nonionic surfactant with an HLB in the range of above 9.5 to ab... | 06/03/1997 |
| 5624480 | Composition and process for substitutionally plating zinciferous surfaces An acidic substitutional plating bath for zinciferous surfaces, particularly zinciferous metal-plated steel sheet, with which sludge production and equipment corrosion are inhibited and which has an improved heavy metal ion deposition efficiency is provid... | 04/29/1997 |
| 5595611 | Moderate temperature manganese phosphate conversion coating composition and process An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint underc... | 01/21/1997 |
| 5587063 | Method for electrolytic coloring of aluminum surfaces using alternating current Anodized aluminum surfaces are electrolytically colored using alternating current in a process in which two different coloring baths are sequentially employed. One bath contains copper(II) ions and an additive which improves throwing power thereby providi... | 12/24/1996 |
| 5584946 | Chromium-free conversion coating treatment of aluminum The invention concerns a method of pretreating aluminum or aluminum alloy surfaces before application of a permanent corrosion-protective conversion coating treatment, in particular before phosphating in acidic phosphating baths containing zinc, a chromat... | 12/17/1996 |
