| Patents for C02F 5 - Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (8,632) |
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| 08/23/1988 | US4765921 Acid composition with high concentrations of active materials for the treatment of water and/or cleaning installations containing same |
| 08/23/1988 | CA1240901A1 Antifoulant agents for petroleum hydrocarbons |
| 08/17/1988 | CN87107274A Treatment of aqueous medium with copolymers contg. acrylamidoalkans sulfonic acid |
| 08/16/1988 | US4764303 Solid phase-mixture with sodium (bi)sulfate |
| 08/09/1988 | US4762621 Itaconate ester copolymers as scale inhibitors |
| 08/04/1988 | DE3701901A1 Use of water-soluble copolymers as antideposition agents in the evaporation of sugar juices |
| 08/03/1988 | EP0276464A2 Process for preparing hydrosoluble copolymers of maleic acid, and their use as water-treating agents |
| 07/26/1988 | US4759852 Sulfamic acid is used as antiscaling and anticorrosion agent |
| 07/26/1988 | US4759851 Water treatment polymers and methods of use thereof |
| 07/26/1988 | CA1239742A1 Carboxylic/sulfonic/polyalkylene oxide polymer for use as scale, corrosion, and iron oxide deposit control |
| 07/26/1988 | CA1239564A1 Scale inhibition in water systems |
| 07/20/1988 | EP0274733A2 Water treatment polymer |
| 07/20/1988 | CN87105392A Detersive systems with dispersed aqueous-organic softening agent for hardness removal |
| 07/19/1988 | US4758635 Polyamindoamine based metal ion control compound |
| 07/13/1988 | EP0274180A2 Detersive systems with a dispersed aqueous organic softening agent for hardness removal |
| 07/13/1988 | CN87106624A Copolymer of low-molecular weight acrylate acrylamide and process for salt deposit of at least bufen part prevent aqueous medium produce |
| 07/12/1988 | CA1239069A1 Method of treating water to inhibit corrosion and diminish mineral deposition |
| 07/06/1988 | EP0273450A2 Solubilizer for water-insoluble alginates in dental impression materials |
| 06/29/1988 | CN87107674A Scale inhibitor |
| 06/22/1988 | EP0272013A2 Process for inhibiting scale formation |
| 06/22/1988 | EP0271784A2 Water soluble polymers containing allyloxybenzenesulfonate monomers |
| 06/15/1988 | EP0271158A2 Enhanced cleaning procedure for copper alloy equipment |
| 06/15/1988 | EP0271035A2 Treatment of aqueous medium with copolymers containing acrylamidoalkane sulfonic acid |
| 06/15/1988 | CN87107773A Calcium phasphonate scale inhibition |
| 06/14/1988 | CA1238146A1 Monitoring method for polyacrylic acids in aqueous systems |
| 05/31/1988 | US4747975 Method of dissolving, and solvents for, difficult to dissolve carbonates |
| 05/25/1988 | EP0177509A4 Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content. |
| 05/25/1988 | CN85105048B Method of recovery and circulating use of waste brine |
| 05/24/1988 | US4746465 Process for preparing a scaling inhibitor |
| 05/24/1988 | CA1236969A1 Mixtures of iminodiacetic acid and nitrilotriacetic acid as a sequestering agent |
| 05/18/1988 | EP0267597A2 Calcium phosphonate scale inhibition |
| 05/18/1988 | EP0267596A2 Copolymers of an acrylic acid and alkoxyalkyl acrylate as scale inhibitors, dispersants and stabilizers |
| 05/18/1988 | CN86106966A Composition for inhibiting inorganic salt scale formation |
| 05/11/1988 | EP0266779A2 Scale inhibitor |
| 05/10/1988 | CA1236481A1 Metal ion control compounds based on norbornane |
| 05/10/1988 | CA1236373A1 Method of controlling iron induced fouling in water systems |
| 05/04/1988 | EP0266234A1 Acrylate acryl amide copolymers with a low molecular weight, and process for reducing the deposition of salt in aqueous systems |
| 04/27/1988 | EP0264627A2 Hydrosoluble, slightly cured polymaleic acid, process for its preparation and its use |
| 04/26/1988 | US4740314 Anionic polymers containing N-vinyl-2-pyrrolidone or other vinyl amides and maleic anhydride or maleic acid as scale inhibitors for preventing or reducing calcium phosphate and other scales |
| 04/26/1988 | CA1235704A1 Bis(aminoalkyl)piperazine derivatives and their use as metal ion control agents and cement set retarding agents |
| 04/19/1988 | CA1235356A1 Silica inhibition: prevention of silica deposition by addition of low molecular weight organic compounds |
| 04/19/1988 | CA1235354A1 Silica inhibition: prevention of silica deposition by boric acid/orthorborate ion |
| 04/05/1988 | US4735787 Scale inhibitor for intermittent washed mist eliminators in flue gas desulfurization systems |
| 03/30/1988 | EP0261589A2 Process for preparing polymaleic acid |
| 03/29/1988 | US4734203 Copper chelants/dispersants and their applications for boiler internal treatment |
| 03/24/1988 | DE3631218A1 Process for treating acidic, heavy metal-containing and/or aluminium-containing raw waters |
| 03/22/1988 | US4732698 Water treatment polymers and methods of use thereof |
| 03/22/1988 | CA1234327A1 Composition and method for inhibiting scale |
| 03/17/1988 | DE3629959A1 Water-carrying heatable domestic appliance |
| 03/15/1988 | CA1234033A1 Water treatment polymers and methods of use thereof |
| 03/10/1988 | DE3636961C1 Process for the hot removal of silica from waste waters from sand lime brick production |
| 03/09/1988 | EP0259038A2 Dispenser for water conditioning material |
| 03/09/1988 | EP0258237A1 Method and apparatus for reducing pitting in copper water pipes. |
| 03/09/1988 | EP0258216A1 Scale removal composition comprising alpha-hydroxy carboxylic acid and thickener |
| 03/08/1988 | CA1233938A1 Copolymers of carboxylic monomer and betaine- containing monomer |
| 03/08/1988 | CA1233722A1 Method of controlling scale in pressurised boilers |
| 03/02/1988 | EP0257876A2 Polyacrylate blends as boiler scale inhibitors |
| 03/01/1988 | US4728460 Aminomethylenephosphonic acid solutions |
| 03/01/1988 | US4728436 Anionic polymers containing 3-acrylamido-3-methylbutanoic acid as scale inhibitors for preventing or reducing calcium phosphate and other scales |
| 02/24/1988 | EP0256366A1 Process for producing polyasparaginamide and its salts |
| 02/24/1988 | EP0256057A1 Scale inhibitor. |
| 02/24/1988 | CN87102313A Method for improving performance of corrosion inhibitors in industrial colling waters |
| 02/23/1988 | US4726907 Hydrazides of amino-polyacetic acids as chelants |
| 02/16/1988 | CA1233000A1 Carboxylic/sulfonic/quaternary ammonium polymers for use as scale and corrosion inhibitors |
| 02/09/1988 | US4724083 Adding dimethylolpropionic acid to water; alkaline conditions; antisoilant |
| 02/04/1988 | DE3625280A1 Purifier for drinking water plants |
| 02/03/1988 | EP0254774A1 Method for controlling phosphonates tending to precipitate metal ions in water |
| 01/26/1988 | US4721532 Removal of iron fouling in cooling water systems |
| 01/26/1988 | CA1231963A1 Phosphonates |
| 01/20/1988 | EP0253061A2 Method of producing piston rings |
| 01/13/1988 | EP0252880A2 Hydroxyphosphono carboxylic acids |
| 01/12/1988 | US4719083 Composition useful as corrosion inhibitor, anti-scalant and continuous biocide for water cooling towers and method of use |
| 01/12/1988 | US4719082 Vinyl sulfonic acid - methacrylic acid copolymer passivators for high pressure boilers |
| 01/07/1988 | EP0251955A1 Highly concentrated acid compounds for water treatment and plant cleaning |
| 01/06/1988 | CN87203183U Multifunctional flow parting valve of boiler-used water softening equipment |
| 01/05/1988 | US4717499 Water treatment polymers and methods of use thereof |
| 01/05/1988 | US4717495 Buffer, cavitation liner pitting inhibitor, corrosion inhibitor, defoamer, scale inhibitor, detergent |
| 12/15/1987 | US4713195 Scale inhibitor |
| 12/15/1987 | US4713184 Dispersed oil soluble corrosion inhibitor and water soluble phosphonate scale inhibitor composition |
| 12/15/1987 | US4713177 Process for mitigating scale formation in tube reaction apparatus |
| 12/15/1987 | US4712616 Method for scale reduction in off-shore platforms |
| 12/08/1987 | US4711735 Coolant additive with corrosion inhibitive and scale preventative properties |
| 12/08/1987 | US4711726 Forming protective coatings |
| 12/08/1987 | US4711725 Acrylic acid, salt, amide, ester ter polymers,interpolymers as polymers as dispersants for phosphates, iron and zinc deposits |
| 12/08/1987 | US4711724 Method for prevention of phosphonate decomposition by chlorine |
| 12/01/1987 | US4710537 Substantially homogeneous copolymers of acrylic or methacrylic acid and maleic acid |
| 12/01/1987 | US4710303 Enhanced oil recovery |
| 11/24/1987 | US4708815 Water treatment polymers and methods of use thereof |
| 11/24/1987 | US4708805 Solution of citric acid, a polycaratic acid and an alkylenepolyaminopolycarboxylic acid |
| 11/24/1987 | US4708207 Aminocarboxylic acid, organosilicon compound |
| 11/24/1987 | CA1229621A1 Metal ion control agents based on dicyclopentadiene derivatives |
| 11/17/1987 | US4707271 Stabilization of iron in aqueous systems |
| 11/10/1987 | US4705573 Descaling process |
| 11/10/1987 | CA1229092A1 Compounds containing quaternary ammonium and methylenephosphonic acid groups |
| 11/04/1987 | EP0243908A2 Granular, phosphate-free water-softening agent |
| 11/03/1987 | US4704440 Polymer compositions detectable in water |
| 11/03/1987 | US4704208 Scale-inhibiting process |
| 10/21/1987 | EP0242229A1 Phosphonic acid/phosphate mixtures for controlling corrosion of metal and inhibiting calcium salt precipitation in aqueous systems |
| 10/21/1987 | CN86100556A Process for manufacturing of water treatment agent consisting of mixed crystal salt of phosphorus |
| 10/20/1987 | US4701262 Inhibition of scale, deposits, corrosion |