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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06/21/1983 | US4389324 Polymeric composition for preventing the formation of scale during evaporation of sugar juices |
06/21/1983 | US4389317 Process for chemical reduction of the phosphate content of water |
06/21/1983 | CA1148438A1 Use of acrylic acid/sodium vinyl-sulfonate copolymers as dispersants in boiler applications |
06/14/1983 | US4388194 Hydrogen sulfide abatement in geothermal steam systems |
06/14/1983 | CA1148058A1 Method and composition to inhibit staining of porcelain surfaces by manganese |
06/14/1983 | CA1148057A1 Method and composition to inhibit staining of porcelain surfaces by manganese |
06/07/1983 | US4387027 Potective oxide film formed in presence of orthophosphate and water soluble acrylic acid/hydroxyalkyl acrylate copolymer |
05/31/1983 | US4386005 Low molecular weight polyacrylic acid-phytic acid mixtures; synergistic |
05/24/1983 | US4384979 For cooling water injection, containing a thioglycolic acid-terminated acrylic acid polymer |
05/18/1983 | EP0079165A2 (METH) acrylic acid/itaconic acid copolymers, their preparation and use as antiscalants |
04/20/1983 | EP0077187A1 Method of inhibiting corrosion and controlling deposition in an aqueous medium |
04/19/1983 | CA1144856A1 Method of aquifer restoration |
04/19/1983 | CA1144714A1 Polyacrylic acids and methyl vinyl ether/maleic anhydride copolymers as soft scale inhibitors |
04/05/1983 | CA1143925A1 Stabilization of aqueous silicates using alkali siliconates of silylalkyl phosphonates |
03/30/1983 | EP0075514A1 Cationic polymers and surfactants as silica polymerization retardants and dispersants |
03/22/1983 | US4377484 Method of chelating heavy metal ions |
03/16/1983 | EP0074336A1 Systems inhibited against corrosion and/or scale formation |
03/15/1983 | CA1142744A1 Composition and method for controlling corrosion in aqueous systems |
02/22/1983 | US4374733 Acrylic acid-hydroxyalkyl acrylate copoly-mer, antiscaling agents |
02/22/1983 | US4374572 Method and composition to inhibit staining of porcelain surfaces by manganese |
02/15/1983 | US4374040 Anticorrosion, antiscale, antiderposit |
02/09/1983 | EP0071323A1 Method and composition for treating aqueous mediums |
02/08/1983 | US4373070 Cross-linked polymers having pendant oxyalkyl tertiary amine groups |
02/08/1983 | US4372870 Method and composition for treating aqueous mediums |
12/29/1982 | EP0067940A1 Sea water desalination unit |
12/28/1982 | US4366066 Stabilization of softened water with self-generated CO2 |
12/14/1982 | US4363794 Oral composition for caries prophylaxis |
12/14/1982 | CA1137420A1 Geothermal brine treatment |
12/08/1982 | EP0066544A1 Water treatment |
11/30/1982 | US4361555 α-1,4-Thiazine alkanephosphonic acids |
11/30/1982 | US4361492 Particulate dispersant enhancement using acrylamide-acrylic acid copolymers |
11/23/1982 | US4360547 Selective scale formation |
11/02/1982 | US4357254 Cleaning composition |
11/02/1982 | US4357248 Treating wells with self-precipitating scale inhibitor |
11/02/1982 | US4357207 Low molecular weight cationic polymers as deposit inhibitors and dispersants in black liquor recovery systems |
10/27/1982 | EP0063197A1 Method and composition for treating aqueous mediums |
10/20/1982 | EP0062718A1 Method and composition for treating aqueous mediums |
10/19/1982 | US4354940 Sodium alumoglucoheptonate, a process for its preparation and its use as sequestering agent |
10/19/1982 | CA1133787A1 Iron oxide deposit control for boilers |
09/28/1982 | US4351796 Method for scale control |
09/16/1982 | WO1982003133A1 Control apparatus for use in multiple steam generator or multiple hot water generator installations |
09/15/1982 | EP0060150A2 Regeneration cycle control system in a water conditioner controlled by a flow meter |
09/14/1982 | US4349412 Method of concentrating and drying water-containing fluent media |
09/14/1982 | CA1131436A1 Corrosion inhibition treatments and method |
09/08/1982 | EP0059259A1 Process for preparing N-(carboxy-alkyl)-1-amino-alkane-1,1-diphosphonic acids and their alkali salts |
09/07/1982 | US4347704 Thermal power plant water treatment process |
09/01/1982 | EP0058794A1 Composition and method for treating an aqueous medium |
08/25/1982 | EP0058597A1 Thickened aqueous acid solutions, and their use, especially for descaling |
08/24/1982 | US4346217 Di-quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
08/18/1982 | EP0058073A2 Acrylate/maleate copolymers, their preparation and use as antiscalants |
08/17/1982 | US4344860 Stabilization of silicates using salts of substituted nitrogen or sulfur containing siliconates |
08/10/1982 | US4343713 Particulate composition |
08/10/1982 | CA1129174A1 Process for recovery of chemicals from saline water |
08/03/1982 | US4342733 Adding phosphorous containing topping agents |
08/03/1982 | US4342652 Process for scale inhibition in evaporative desalination units |
08/03/1982 | US4342584 Microbiocidal process using di-quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
07/28/1982 | EP0056627A2 Copolymer and method for manufacture thereof |
07/27/1982 | CA1128402A1 Water treatment |
07/22/1982 | WO1982002379A1 Cleaning composition |
07/21/1982 | EP0056180A1 Method and composition for inhibiting the amount of oxidation of sulfite in a sulfite containing aqueous gas scrubber medium |
06/30/1982 | EP0054733A1 Surfactant, process for making it, and use of it |
06/22/1982 | US4336232 Production of purified brine |
06/22/1982 | US4336156 Quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
06/22/1982 | CA1125965A1 Granulate based on polymer phosphate and alkali aluminium silicate |
06/15/1982 | CA1125932A1 Process and an apparatus for chemical reduction of phosphate content of water by adding at least one reagent which forms a crystalline difficulty soluble salt, and contacting the liquid with a seed material promoting the crystallisation |
05/19/1982 | EP0051891A1 Improved polyethylene oxide cake with reduced gelling for flush toilet wastewater sanitation |
05/19/1982 | EP0051696A1 Improved polyethylene oxide cake with reduced gelling for flush toilet wastewater sanitation |
05/18/1982 | US4330487 N,N-Dimethylene phosponic acids of alkylene diamines |
05/18/1982 | CA1123701A1 Scale inhibitors |
05/12/1982 | EP0051104A1 Process for the treatment of water containing nitrate |
05/11/1982 | CA1123307A1 Surfactant chelating scale inhibitor and dispersant for wet scrubber deposit control |
05/05/1982 | EP0050894A1 Water-softening compositions on basis of aluminosilicates and detergent compositions containing them |
05/04/1982 | US4328106 Method for inhibiting silica precipitation and scaling in geothermal flow systems |
04/27/1982 | US4326980 Acrylic copolymer composition inhibits scale formation and disperses oil in aqueous systems |
04/27/1982 | US4326962 Sulfur-containing lignins as magnesium sulfite tri-hydrate dispersants |
04/27/1982 | CA1122393A1 Synergistic corrosion inhibitors for ferrous metals |
04/13/1982 | US4324664 Method and composition for treating aqueous mediums |
04/06/1982 | US4323461 Process of inhibiting scale formation in aqueous systems using di-quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
04/06/1982 | US4323460 Process of inhibiting scale formation in aqueous systems using α-1,4-thiazine alkanephosphonic acids |
04/06/1982 | US4323459 Process of inhibiting scale formation in aqueous systems using quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
03/24/1982 | EP0047956A1 Removal of scale from porous diffusion tiles |
03/10/1982 | EP0047150A2 Improvements relating to aminomethylenephosphonic acid solutions |
03/03/1982 | EP0046706A2 Supported sequestering agents, process for their production and their use in organic synthesis and extraction of metals |
02/23/1982 | CA1118589A1 Method of corrosion inhibition in aqueous mediums |
02/17/1982 | EP0046078A1 Inhibition of scale deposition |
02/09/1982 | US4314779 Precipitating calcium carbonate |
02/09/1982 | CA1117844A1 Deposit control through the use of oligomeric phosphonic acid derivatives |
02/02/1982 | US4313825 Control system for meter actuated regeneration in a water treatment system |
02/02/1982 | CA1117624A1 Means and method for controlling an apparatus for conditioning a liquid |
02/02/1982 | CA1117395A1 Scale prevention in industrial cooling waters using phosphonocarboxylic acids and certain acrylic acid polymers |
01/19/1982 | US4311663 α-1,4-Thiazine alkanephosphonic acids as corrosion inhibitors |
01/12/1982 | US4310435 Aldehydes |
01/06/1982 | EP0042940A1 Heteroalkylene-bis-anthraquinones |
01/05/1982 | US4309383 Di-quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids as corrosion inhibitors |
01/05/1982 | CA1115728A1 N-sulphohydroxyalkane-aminoalkanephosphonic acids, their alkali salts, and a process for their production |
12/29/1981 | US4308147 Antiscaling agents, antideposit agents |
12/22/1981 | US4307038 N-Carboxy alkyl amino alkane polyphosphonic acids |
12/22/1981 | US4306991 Scale inhibition |
12/22/1981 | CA1114978A1 Sludge conditioning composition for scale inhibition in water |
12/16/1981 | EP0041879A1 Compositions of acrylic polymer, process for obtaining them and application as antifouling agents |