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| Number | Title | Issue Date |
| 5590716 | Method of inhibiting downhole corrosion of metal surfaces A method of inhibiting corrosion on metal surfaces and downhole equipment and above surface separation equipment from a mixture of brine and crude oil extracted from underground formations. The method comprises the injection on a periodic basis of an effe... | 01/07/1997 |
| 5403496 | Process for stabilizing metals in ash A process for stabilizing metals in ash to prevent leaching of the metals is disclosed. The pH of an aqueous slurry of ash is reduced to less than 5 in the presence of an iron salt. The pH-reduced slurry is then treated with an organo sulfur containing co... | 04/04/1995 |
| 5401325 | Process for removing carbon deposits using microemulsion cleaners This invention relates to a process for removing oil, grease, and baked-on carbon deposits from metal surfaces with microemulsion cleaners comprising (a) an organic solvent (b) a surfactant blend comprising an anionic and nonionic surfactant (c) a glycol ... | 03/28/1995 |
| 5401326 | Microemulsion cleansers and their uses This invention relates to microemulsion cleaners comprising (a) an organic solvent (b) a surfactant blend comprising an anionic and nonionic surfactant (c) a glycol ether (d) morpholine, and (e) water. These cleaners can be used for removing baked-on oil ... | 03/28/1995 |
| 5382520 | Automated method for controlling the rate of chlorine dioxide generation An automated process for controlling the rate chlorine dioxide made from sodium chlorate-chloride and sulfuric acid is generated. The process automatically adjusts the rate of chlorine dioxide production to the needs of the system treated with chlorine di... | 01/17/1995 |
| 5073354 | Process of stripping gold and silver from carbon Gold and silver are stripped from activated carbon on which they are adsorbed as cyanide complexes by subjecting the activated carbon to a stripping solution comprising as the strippant an effective amount of a compound containing the carboxylate function... | 12/17/1991 |
| 5068059 | Corrosion inhibitor A corrosion inhibitor for aqueous systems containing ferrous and non-ferrous metallic surfaces comprising (a) hydroxyphosphonoacetic acid, or a water soluble salt thereof, and (b) an aminoalkylenephosphonic acid derivative, or a water soluble salt thereof... | 11/26/1991 |
| 4970026 | Corrosion inhibitor A corrosion inhibitor for ferrous and non-ferrous aqueous systems comprising any of (1) a naphthenic oil based sodium salt of a triethanolamine alkylsulfamido carboxylic acid, (2) a paraffinic oil based sodium salt of a triethanolamine alkylsulfamido carb... | 11/13/1990 |
| 4961878 | Corrosion inhibitor for a closed aqueous cooling system A composition for inhibiting metal corrosion in a closed aqueous cooling system comprising an aqueous mixture of (a) a nitrate, (b) a silicate, (c) an acrylate polymer, (d) an amine oxide and (e) tolyltriazole. A preferred embodiment also includes a molyb... | 10/09/1990 |
| 4929274 | Recovery of metal values from ores Heap leaching of gold/silver ores with an aqueous alkali cyanide solution containing a surfactant hydrolyzable at the pH of the solution, the surfactant being present in an amount sufficient to increase the rate of metal value recovery without adversely a... | 05/29/1990 |
| 4915872 | Cast solid block corrosion inhibitor composition A solid cast block of corrosion inhibitor composition, comprising: (i) about 5 to 20 wt-% silicate, calculated as sodium metasilicate pentahydrate; (ii) about 5 to 90 wt-% borate, calculated as sodium tetraborate pentahydrate; (iii) about 0.5 to 5 wt-% po... | 04/10/1990 |
| 4894119 | Retention and/or drainage and/or dewatering aid A combination of a cationic polymer and a nonionic polymer are employed as a drainage and/or dewatering and/or retention aid. The combination has particular applicability to improving retention and/or drainage in the papermaking industry by addition of th... | 01/16/1990 |
| 4806310 | Corrosion inhibitor A corrosion inhibitor for ferrous and non-ferrous aqueous systems comprising (a) a water soluble phosphonic acid or salt thereof, preferably an amino methylene phosphonic acid; (b) a phosphonocarboxylic acid, preferably a phosphonoalkane carboxylic acid; ... | 02/21/1989 |
| 4749412 | Method and composition for the inhibition of corrosion A method and composition for inhibiting corrosion is disclosed. The method involves forming a coating of from about 1-10 mils thick on a surface, with a composition comprising an over-based alkaline organic sulfonate salt, a drying oil, a copper or rare e... | 06/07/1988 |
| 4725611 | Synergistic microbiocidal compositions containing a mixture of a bicyclicpolyoxymethyleneoxazolidine and a 4-isothiazolin-3-one A synergistic microbiocidal composition comprising as Component (1) a 4-isothiazolin-3-one and as Component (2) a bicyclic polyoxymethyleneoxazolidine of the formula: ##STR1## in which each R represents hydrogen, an alkyl of 1-6 carbons, phenyl, ... | 02/16/1988 |
| 4725613 | Synergistic microbiocidal composition containing a mixture of a N-alkyldimethylbenzyl ammonium halide and a bicyclicpolyoxymethylene oxazolidine A synergistic microbiocide comprising a member selected from the group consisting of (1) an N-alkyl (C8 -C30) dimethylbenzylammonium halide and (2) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:10-10:1 in ... | 02/16/1988 |
| 4725612 | Synergistic microbiocidal compositions containing a mixture of a bicyclic polyoxymethylene oxazolidine and a 1,2-benzisothiazolin-3-one A synergistic microbiocidal composition for inhibiting bacterial growth comprising Component (1) having the formula: ##STR1## in which R represents hydrogen or a halogen atom, and alkali ammonium and amine salts thereof; and Component (2) having the ... | 02/16/1988 |
| 4724143 | Synergistic microbiocidal composition containing a mixture of a bicyclic polyoxymethyleneoxazolidine and an acroloin/formaldehyde polycondensation product A synergistic microbiocide comprising a member selected from the group consisting of (1) an N-alkyl (C8 -C30) dimethylbenzylammonium halide and (2) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:10-10:1 in ... | 02/09/1988 |
| 4724142 | Synergistic microbiocidal compositions containing a mixture of a N-alkyl dimethylbenzylammonium halide and an acrolein/formaldehyde polycondensation product A synergistic microbiocidal composition for inhibiting bacterial growth comprising as Component (1) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:1-10:1 and as Component (2) an N-alkyl(C8 -C30) dimethylben... | 02/09/1988 |
| 4686854 | Process and apparatus for measuring corrosion rate of a heat transfer surface There is disclosed a novel fouling and corrosion test assembly including a metallic tube having a heating element embedded in a heat conductive material for controlled heat input and with a thermocouple to measure wall temperature of the tube, and a metal... | 08/18/1987 |
| 4670236 | Control of scale in flue gas scrubbers A method for minimizing calcium scale deposits in wet slurry flue gas desulfurization systems by introducing into the slurry a 50:50 diisobutylene-maleic anhydride copolymer of an average molecular weight of 11000.... | 06/02/1987 |
| 4664884 | Corrosion inhibitor A corrosion inhibitor for ferrous and non-ferrous aqueous systems comprising (a) a water soluble phosphonic acid or salt thereof, preferably an amino methylene phosphonic acid; (b) a phosphonocarboxylic acid, preferably a phosphonoalkane carboxylic acid; ... | 05/12/1987 |
| 4647314 | Rinse water additive Can containing food are rinsed with an aqueous solution of quaternary ammonium salt and oxyalkylene polymer (homopolymer of oxyethylene or copolymer of oxyethylene and oxypropylene).... | 03/03/1987 |
| 4626377 | Defoaming composition A synergistic, aqueous, free flowing defoaming composition comprising as the primary component an aqueous hydrophobic dispersion of an alcohol of 14-28 carbon atoms, a fatty acid of 14-28 carbon atoms, a soap of a fatty acid of 14-28 carbon atoms and a no... | 12/02/1986 |
| 4487745 | Oximes as oxygen scavengers The removal of dissolved oxygen from aqueous systems, such as steam generating systems, thereby inhibiting the corrosion of metal surfaces by adding to the system a composition in which the effective component is an oxime of the formula: ##STR1## ... | 12/11/1984 |
| 4477370 | Defoaming composition A synergistic, aqueous, free flowing defoaming composition comprising as the primary component an aqueous hydrophobic dispersion of an alcohol of 14-28 carbon atoms, a fatty acid of 14-28 carbon atoms, a soap of a fatty acid of 14-28 carbon atoms and a no... | 10/16/1984 |
| 4401574 | Flocculation of aqueous paint waste Paint waste water containing dispersed paint solids is clarified by flocculating the solids with a basic poly aluminum chloride having the following structural formula: wherein n and m are integers and 3n is larger than m, and the basicity is from 30% to ... | 08/30/1983 |
| 4386008 | Corrosion protection package A water disintegratable package which includes a solid water soluble salt of hydrazine whereby the package can be added to water to effect disintegration of the package to release the hydrazine salt for solubilization in the water to thereby provide for c... | 05/31/1983 |
| 4377493 | Defoamer composition and use thereof A defoamer comprised of silica having hydrophobic surfaces dispersed in a water insoluble hydrophobic organic liquid, wherein the silica has a surface area of no greater than 0.1 m2 /g and the hydrophobic silica comprises in excess of 25 wt. pe... | 03/22/1983 |
| 4346587 | Process and apparatus for testing fluids for fouling and antifoulant protocol There is disclosed a novel mobile apparatus and process therefor including a heat transfer test assembly and related conduit and valve assemblies for connection in fluid flow communication to a heat transfer apparatus for in-situ testing and generation of... | 08/31/1982 |
| 4339945 | Process and apparatus for testing fluids for fouling There is disclosed a novel mobile apparatus and process therefor including a heat transfer test assembly and related conduit and valve assemblies for connection in fluid flow communication to a heat transfer apparatus for in-situ testing of the fluid pass... | 07/20/1982 |
| 4340500 | Liquid defoamer and process of use thereof A free flowing aqueous defoamer comprised of alcohol, a fatty acid, a soap of a fatty acid and an anionic and/or non-ionic surfactant which prevents formation of a gelled mass of the solids and provides a free flowing dispersion of the solids in the water... | 07/20/1982 |
| 4317744 | Corrosion inhibitor Corrosion inhibitor comprised of corrosion inhibiting amounts of a water soluble phosphonic acid or salt thereof; polymer of acrylic, methacrylic, maleic acid or its anhydride; and tolyltriazole. The corrosion inhibitor is particularly employed for inhibi... | 03/02/1982 |
| 4303549 | Liquid defoamer and defoaming process A free flowing aqueous defoamer comprised of a solid alcohol, a solid fatty acid, a soap of a solid fatty acid and an anionic and/or non-ionic surfactant which prevents formation of a gelled mass of the solids and provides a free flowing dispersion of the... | 12/01/1981 |
| 4287072 | Water treatment by ion exchange resin In the treatment of water by the use of a cationic and/or anionic exchange resin, catalyzed hydrazine compound is added to the feed water to alleviate the iron fouling of the ion exchange resin.... | 09/01/1981 |
| 4105581 | Corrosion inhibitor Corrosion inhibitor comprised of a phosphate and phosphonate, which further includes a homopolymer of maleic acid or maleic anhydride. The inhibitor is capable of effectively functioning in aqueous systems operating at an alkaline pH, and in particular a ... | 08/08/1978 |
| 4104033 | Foam prevention in sodium carbonate crystallization In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate doe... | 08/01/1978 |
| 4096061 | Recovery and reuse of paint solids from waste water A latex base paint waste water containing dispersed paint solids is clarified by flocculating the paint solids with a cationic flocculant. The separated paint sludge is brought to an alkaline pH and treated with an anionic dispersing agent whereby the slu... | 06/20/1978 |
