| 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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| 04/16/1996 | US5507108 1-hydroxyethylenediphosphonic acid/1,1-/, dicalcium salt used as antiscaling agent |
| 04/11/1996 | WO1996010543A1 Corrosion inhibiting compositions for aqueous systems |
| 04/11/1996 | DE19502588C1 Reduction of chemical potential in built up matter in liquid flows |
| 04/11/1996 | CA2201510A1 Corrosion inhibiting compositions for aqueous systems |
| 04/10/1996 | EP0705794A2 Method of inhibiting sulfate scale in aqueous systems |
| 04/09/1996 | US5506335 Water treatment, detergent additive |
| 04/02/1996 | US5503775 Method of preventing yellow metal corrosion in aqueous systems with superior corrosion performance in reduced environmental impact |
| 03/20/1996 | EP0702043A2 Process for the preparation of polycondensates of citric acid and their use in detergents and cleaning agents |
| 03/20/1996 | CN1118768A Automatic monitoring system for boiler water in concert with PH-phosphate treatment |
| 03/19/1996 | US5500128 High calcium tolerant deposit control method |
| 03/13/1996 | EP0700950A1 Sulfonic mortises containing polyaspartic acid derivates, their use and their preparation |
| 03/13/1996 | EP0700874A1 Hexamethylene phosphonate concentrate |
| 03/13/1996 | CA2158002A1 Method of inhibiting sulfate scale in aqueous systems using poly(amino acids) |
| 03/12/1996 | CA1338161C Amine-containing copolymers and their use |
| 03/07/1996 | WO1996006879A1 Process for preparing polyaspartic acid salts |
| 03/07/1996 | WO1996006528A1 Ionene polymers containing biologically-active anions |
| 03/06/1996 | EP0699632A1 Use of copolymers to prevent scale of heavy metals sulfides in pipes for high enthalpy fluids |
| 03/06/1996 | CN2221589Y High-frequency physical water-purifying antiscale device |
| 02/29/1996 | DE4430520A1 Verfahren zur Herstellung von Salzen der Polyasparaginsäure und ihre Verwendung in Wasch- und Reinigungsmitteln A process for preparing salts of polyaspartic acid and their use in detergents and cleaners |
| 02/28/1996 | EP0698580A1 Means for preventing deposit formation and oxygen corrosion in industrial process waters |
| 02/28/1996 | CN1031151C Underground petroleum-containing formations and equipment associated therewith |
| 02/27/1996 | US5494527 Treating with aqueous inorganic and organic acid solutions |
| 02/22/1996 | WO1996005244A1 Method for producing condensates of aspartic acid |
| 02/22/1996 | WO1996005243A1 Method for producing condensation polymers of aspartic acid and their use in washing and cleaning products |
| 02/22/1996 | WO1996005242A1 Method for producing condensation polymers of aspartic acid and use of the condensation polymers |
| 02/22/1996 | WO1996005241A1 Method for producing polyaspartic acid |
| 02/22/1996 | WO1996005143A1 Use of hydrogen sulphate as the acid constituent in conjunction with hydrogen peroxide for the cleaning of drinking-water supply equipment |
| 02/22/1996 | DE4429108A1 Polycondensation of asparagine, iso:asparagine, ammonium aspartate or aspartic acid di:amide |
| 02/21/1996 | CN1117026A Multi-function sewage treating agent and its prepn method |
| 02/20/1996 | US5492629 Method of cleaning scale and stains in water systems and related equipment |
| 02/15/1996 | WO1996004411A1 Scale and corrosion inhibiting composition for protecting surfaces in contact with water and method for the preparation of said composition |
| 02/15/1996 | WO1996004330A1 Process for preparing aspartic acid polycondensates with improved biological degradability and their use |
| 02/15/1996 | WO1996004208A1 Compound for removing scale |
| 02/15/1996 | DE4428639A1 Verfahren zur Herstellung von Polyasparaginsäure A process for the preparation of polyaspartic acid |
| 02/15/1996 | DE4428638A1 Verfahren zur Herstellung von Polykondensaten der Asparaginsäure und Verwendung der Polykondensate A process for preparing polycondensates of aspartic acid and use of the polycondensates |
| 02/15/1996 | DE4428597A1 Verfahren zur Herstellung von Polykondensaten der Asparaginsäure und ihre Verwendung in Wasch- und Reinigungsmitteln A process for preparing polycondensates of aspartic acid and their use in detergents and cleaners |
| 02/15/1996 | DE4428596A1 Verfahren zur Herstellung von Kondensaten der Asparaginsäure Process for the preparation of condensates of aspartic acid |
| 02/15/1996 | DE4428027A1 Verwendung von Hydrogensulfat als Säurekomponente in Verbindung mit Wasserstoffperoxid zur Reinigung von Trinkwasserversorgungseinrichtungen Use of hydrogen sulfate as the acid component in combination with hydrogen peroxide to clean drinking water supply facilities |
| 02/15/1996 | CA2196336A1 Process for preparing aspartic acid polycondensates with improved biological degradability and their use |
| 02/13/1996 | US5490942 Process of inhibiting oxalate scale formation |
| 02/08/1996 | WO1996003643A1 Determining biodegradability of iminodiacetic acid derivatives, degradable chelants, uses and compositions thereof |
| 02/08/1996 | DE4427287A1 Verfahren zur Herstellung von Polykondensaten der Asparaginsäure mit verbesserter biologischer Abbaubarkeit und ihre Verwendung A process for preparing polycondensates of aspartic acid with improved biodegradability and their use |
| 02/07/1996 | EP0695289A1 Hydroxamic acids and hydroxamic acid ethers and their use as complexing agents |
| 02/07/1996 | CN1116188A Cooling water treating method and equipment in metallurgical industry |
| 02/06/1996 | US5489666 Control of scale formation in aqueous systems |
| 02/06/1996 | US5489391 Coolant compositions with p-tert-butylbenzoic acid or salt |
| 02/01/1996 | WO1996002582A1 Procedure for manufacturing and application of novel polycarboxylate types |
| 01/31/1996 | EP0694027A1 Apparatus and method for continuously decarbonating and deliming untreated ph-neutral calcareous water |
| 01/25/1996 | DE4425951A1 Poly:succinimide, poly:aspartic acid and maleamic acid prepn. without extraneous additives |
| 01/23/1996 | US5486295 Method for treating polymer-containing waters to allow use as cooling tower makeup |
| 01/23/1996 | US5486294 Method of inhibiting barium sulfate and strontium sulfate scale at low pH |
| 01/17/1996 | EP0692459A1 Means for water treatment |
| 01/17/1996 | CN1114952A Compound method of multicomponent compound anti-scale corrosion inhibitor |
| 01/16/1996 | CA2045920C Grafted polysaccharides, their preparation process and their application as chelating agents |
| 01/02/1996 | US5480574 2-aminocarboxylic acid hydrochloride compositions for removal of hard-water deposits |
| 12/28/1995 | WO1995035419A1 Method of cleaning and maintaining potable water distribution pipe systems with a heated cleaning solution |
| 12/28/1995 | WO1995035337A1 Soluble, crosslinked polyaspartates |
| 12/27/1995 | EP0642593B1 Use of condensation products of aspartic acid as deposit-prevention agents in the concentration of sugar juices |
| 12/26/1995 | US5478476 Preventing calcium carbonate scale formation on metal surfaces in contact with industrial process waters |
| 12/21/1995 | WO1995034511A1 1:1 soap compositions of acids and amines or ammonia useful in removal and prevention of scale |
| 12/21/1995 | CA2190352A1 1:1 soap compositions of acids and amines or ammonia useful in removal and prevention of scale |
| 12/20/1995 | EP0687278A1 Polymers containing polyacetal blocks, method of producing them and their use |
| 12/20/1995 | CN1113569A Regulating water treatment agent dosage based on operational system stresses |
| 12/19/1995 | US5476670 Biocidal methods and compositions for recirculating water systems |
| 12/13/1995 | EP0686657A1 A method of producing beta-polyaspartic acid |
| 12/06/1995 | CN2214413Y Drinking water purifier |
| 12/06/1995 | CN1112936A Aqueous process for preparing low molecular weight polymers |
| 11/29/1995 | EP0530359B1 Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor |
| 11/22/1995 | EP0682676A1 Biodegradable copolymers, method of producing them and their use. |
| 11/21/1995 | US5468395 Process and apparatus for demineralizing water |
| 11/21/1995 | US5468393 Methods of controlling scale formation in the presence of metal ions in aqueous systems |
| 11/15/1995 | EP0681995A2 Scale inhibition process |
| 11/14/1995 | US5466381 With water soluble azo compound |
| 11/08/1995 | EP0680457A1 Fluid treatment device and method. |
| 11/07/1995 | US5464636 Biocidal methods and compositions for recirculating water systems |
| 10/31/1995 | US5462668 Use of steam to condensate to dilute brine stream additives |
| 10/31/1995 | CA2082604C Corrosion and/or scale inhibition |
| 10/18/1995 | EP0677485A1 Means for preventing deposit formation in industrial process waters |
| 10/17/1995 | US5458768 Lime addition system for water treatment |
| 10/17/1995 | CA1337324C Treatment of aqueous systems |
| 10/17/1995 | CA1337323C Treatment of aqueous medium with copolymers containing acrylamidoalkane sulfonic acid |
| 10/12/1995 | WO1995026931A1 Process and installation for the targeted formation of germs or crystals |
| 10/12/1995 | CA2187098A1 Method and device for specific formation of nuclei or crystals |
| 10/11/1995 | EP0676422A1 Aqueous process for preparing low molecular weight polymers |
| 10/11/1995 | EP0418374B1 Sulfate scale dissolution |
| 10/06/1995 | CA2145836A1 Aqueous process for preparing low molecular weight polymers |
| 10/03/1995 | US5454954 Scale control in metal mining circuits using polyether polyamino methylene phosphonates |
| 09/27/1995 | EP0674024A2 Method for controlling and removing solid deposits from a surface of a component of a steam generating system |
| 09/27/1995 | EP0674022A2 Method of inhibiting scale and controlling corrosion in cooling water systems |
| 09/26/1995 | US5453416 Composition and method for controlling phosphonates tending to precipitate metal ions in water |
| 09/26/1995 | US5453204 Adding water soluble polymer of acrylic acid as antiscaling agent to mixture free of phosphorus; epoxidation |
| 09/26/1995 | CA1337108C Use of carboxylic acid/sulfonic acid copolymers as aluminum ion stabilizers |
| 09/21/1995 | WO1995025073A1 Method and device for decarbonating untreated water |
| 09/21/1995 | DE4408862A1 Verfahren und Vorrichtung zur Entkarbonisierung von Rohwasser Method and apparatus for decarbonization of raw water |
| 09/20/1995 | EP0672625A1 Compound for water treatment with polyaspartic acid or a derivative thereof and phosphonic acid |
| 09/19/1995 | US5451335 1:1 soap compositions of acids and amines or ammonia useful in removal and prevention of scale |
| 09/18/1995 | CA2144572A1 Method for controlling and removing solid deposits from a surface of a component of a steam generating system |
| 09/13/1995 | CN1108266A Acid catalyzed process for preparing amino acid polymers |
| 09/13/1995 | CN1108265A A process for preparing polymere which contain aspartic acid |
| 09/12/1995 | US5449476 Sulfonamide |