| 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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| 05/28/1997 | EP0775169A1 Method for producing condensation polymers of aspartic acid and their use in washing and cleaning products |
| 05/28/1997 | EP0775168A1 Method for producing condensation polymers of aspartic acid and use of the condensation polymers |
| 05/28/1997 | EP0775167A1 Method for producing polyaspartic acid |
| 05/28/1997 | EP0775092A1 Use of hydrogen sulphate as the acid constituent in conjunction with hydrogen peroxide for the cleaning of drinking-water supply equipment |
| 05/21/1997 | EP0774017A1 Scale and corrosion inhibiting composition for protecting surfaces in contact with water and method for the preparation of said composition |
| 05/21/1997 | EP0773970A1 Process for preparing aspartic acid polycondensates with improved biological degradability and their use |
| 05/15/1997 | DE19541699A1 Prepn. of polycondensates of aspartic acid and optionally co-condensable compounds |
| 05/14/1997 | EP0772770A1 Determining biodegradability of iminodiacetic acid derivatives, degradable chelants, uses and compositions thereof |
| 05/13/1997 | US5629385 Antiscale agents |
| 05/09/1997 | WO1997016464A1 Use of polycarboxylic acid semi-amides as scale inhibitors |
| 05/06/1997 | US5627145 Composition and method for controlling phosphonates tending to precipitate metal ions in water |
| 05/06/1997 | CA2045195C Steam stripping process for softening water |
| 05/02/1997 | EP0687278B1 Polymers containing polyacetal blocks, method of producing them and their use |
| 04/30/1997 | DE19540090A1 Use of polycarboxylic acid semi-amide as scale inhibitor in water systems |
| 04/30/1997 | CN1148572A Corrosion-proof scale-inhibitor for water-heating boiler and application method thereof |
| 04/29/1997 | US5624995 Polymer containing fluorescent compound with an allyl group, easy adjustment of concentration |
| 04/29/1997 | US5624568 Stabilization of magnesium hydroxide slurries |
| 04/16/1997 | EP0767806A1 Soluble, crosslinked polyaspartates |
| 04/16/1997 | EP0682676B1 Biodegradable copolymers, method of producing them and their use |
| 04/15/1997 | US5620607 Filtering fluidized bed reactor |
| 04/09/1997 | EP0767145A1 Use of a synergistic composition for scale control |
| 04/09/1997 | EP0766765A1 Method of cleaning and maintaining potable water distribution pipe systems with a heated cleaning solution |
| 04/09/1997 | CN1147237A Process and installation for targeted formation of germs or crystals |
| 04/07/1997 | CA2187145A1 Aqueous system containing a synergistic combination for controlling calcium carbonate and calcium phosphate scale |
| 04/07/1997 | CA2187121A1 Aqueous system containing a synergistic phosphonate scale control combination |
| 04/02/1997 | EP0765294A1 1:1 soap compositions of acids and amines or ammonia useful in removal and prevention of scale |
| 04/02/1997 | CN1146433A Buck scale preventative |
| 04/01/1997 | US5616497 Method of chelating a metal ion to form a chelate and biodegrading the chelate |
| 04/01/1997 | US5616307 Boiler operation with decreased NOx and waste water discharge |
| 04/01/1997 | US5616278 Treating cooling water system with a 1-hydroxy-2-amino-, oxy-, or thio-succinic acid derivative |
| 04/01/1997 | US5616151 Acidification |
| 04/01/1997 | US5615862 Metal precipitation composition for treating spent dry film stripping solution |
| 03/26/1997 | EP0764612A1 Method of nutrition of farm animals and equipment for instant carbonation of water for elaborations of this method |
| 03/26/1997 | EP0680457B1 Fluid treatment device and method |
| 03/26/1997 | CN1145911A Sulfonation product of conjugated diene, polymer of sulfonation product and dispersion composition containing sulfonation product and/or the polymer |
| 03/26/1997 | CN1145881A Phosphoretted ternary-copolymer water antisludging agent |
| 03/25/1997 | US5614161 Contains phosphorus, detergent use, high calcium binding power |
| 03/22/1997 | CA2160401A1 Stabilization of catalyzed aqueous sulfite and bisulfite ion solutions |
| 03/20/1997 | WO1997010180A1 Composition and process for inhibiting scale formation in aqueous systems |
| 03/20/1997 | WO1997010179A1 Magnesiosilicates |
| 03/13/1997 | DE19549350A1 Avoiding or eliminating flocculation in whirlpool bath water |
| 03/13/1997 | DE19533451A1 Avoiding or eliminating flocculation in whirlpool bath water |
| 03/12/1997 | EP0761609A1 Anti-scaling terpolymer agent and method for treating water |
| 03/12/1997 | EP0761604A2 An agent for water treatment |
| 03/12/1997 | CN1144780A High-efficiency quick descaling agent for cleaning water scale on vehicle radiator inner wall |
| 03/12/1997 | CN1144779A Method for prevention of scale formation in aqueous systems |
| 03/12/1997 | CN1144778A Automatic dredging agent for sewerage |
| 03/11/1997 | US5610267 Process for preparing polysuccinimide by high temperature reaction |
| 03/11/1997 | US5610255 Process for preparing polysuccinimide and polyaspartic acid |
| 03/11/1997 | US5609765 Steam stripping method for the softening of water |
| 03/11/1997 | CA2053146C Process for the treatment of wash water from the gas washing system of an iron ore reduction plant |
| 03/06/1997 | WO1997008107A1 A chemical cleaning method for the removal of scale, sludge and other deposits from nuclear steam generators |
| 03/05/1997 | CN1144197A Phosphinic sulfoacid carboxylic acid multicomponent copolymer and its synthetic method |
| 03/04/1997 | US5607911 Aqueous compositions with detergent for rust and stain removal |
| 02/26/1997 | EP0741755A4 Polyaspartic acid having more than 50 % beta form and less than 50 % alpha form |
| 02/25/1997 | US5606512 For use as chelating agents |
| 02/25/1997 | US5606106 Hexamethlene phosphonate concentrate |
| 02/25/1997 | US5606105 Water treatment agent |
| 02/18/1997 | US5604291 Telomers |
| 02/18/1997 | US5603862 Liquid composition containing anticorrosion effective amount of metabisulfite, stabilizing amount of succinic or adipic acid or sodium, potassium or ammonium salts thereof |
| 02/12/1997 | CN2247173Y Cooling type electronic scale-removing agent |
| 02/12/1997 | CN1142837A Graft copolymers of unsaturated monomers and polyhydroxy compounds, process for producing them and their use |
| 02/11/1997 | US5601754 Water treatment polymer containing poly[oxy-[(hydroxymethyl)-1,2-ethanediyl]] macromonomers and methods of use thereof |
| 02/11/1997 | US5601723 Controlling the molecular weight of additional copolymers by chain transfer agent |
| 02/05/1997 | CN1033984C Cyclic cleaning method for calcareous scale of vaporizing pot of sugar-processing plant |
| 02/01/1997 | CA2182261A1 Method and agent for inhibiting incrustations in evaporators for concentrating black liquor |
| 01/30/1997 | WO1997003254A1 Domestic water treatment system |
| 01/30/1997 | WO1997003025A1 House water decalcifying process |
| 01/30/1997 | WO1997003018A1 Hydrous layered silicates and detergent compositions containing the same |
| 01/29/1997 | CN2246149Y Device for clearing incrustant by utilizing electric field between conducting liquid and metal vessel |
| 01/28/1997 | US5597509 Aqueous process for preparing low molecular weight polymers and detergent compositions comprising same |
| 01/22/1997 | EP0754167A1 Process and installation for the targeted formation of germs or crystals |
| 01/16/1997 | DE19527252A1 Verfahren und Vorrichtung zum Entkalken von Wasser Method and apparatus for descaling water |
| 01/14/1997 | US5594084 Antideposit |
| 01/14/1997 | US5594077 Process for preparing polymers which contain aspartic acid |
| 01/14/1997 | US5593599 Method for inhibiting microbial adhesion on surfaces |
| 01/14/1997 | US5593595 Method for controlling scale using a synergistic phosphonate combination |
| 01/08/1997 | CN1139650A Multi-function water quality treating agent for cooling water system |
| 01/02/1997 | EP0750592A1 Method and device for decarbonating untreated water |
| 12/24/1996 | US5587142 Synergistic effect |
| 12/12/1996 | DE19548352C1 Water softening appts. |
| 12/11/1996 | CN1137492A Industrial water quality stabilizing treating agent for blast furnace |
| 12/11/1996 | CN1137491A Water quality treating chemicals |
| 12/05/1996 | DE19519922A1 Calcium source for coral aquaria |
| 12/03/1996 | US5580941 Graft copolymers of unsaturated monomers and sugars, a process for the production and the use thereof |
| 12/03/1996 | US5580462 Adding to aqueous system combination of polyether polyamino methylene phosphonate and terpolymer of acrylic acid, sulfophenyl methallyl ether, maleic acid |
| 11/26/1996 | US5578246 Corrosion inhibiting compositions for aqueous systems |
| 11/20/1996 | EP0553149B1 Apparatus and method for hydrolysis of cyanide-containing liquids |
| 11/19/1996 | US5575993 Useful as herbicides, microbiocides, plant growth regulators, pharmaceuticals, disinfectants, algicides, sanitizers, and preservatives |
| 11/19/1996 | US5575920 Terpolymer |
| 11/19/1996 | US5575857 Aqueous alkaline metal descaling concentrate and method of use |
| 11/19/1996 | CA2015489C Process for producing and use of maleic acid (co-) polymer salt improved in biodegradability |
| 11/14/1996 | WO1996035646A1 Acidic aqueous liquid compositions |
| 11/14/1996 | WO1996035645A1 Corrosion products removal methods and compositions for use therein |
| 11/14/1996 | CA2220516A1 Acidic aqueous liquid compositions |
| 11/13/1996 | EP0742279A1 Acidic aqueous liquid compositions |
| 11/13/1996 | EP0741755A1 Polyaspartic acid having more than 50 % beta form and less than 50 % alpha form |
| 11/07/1996 | WO1996034908A1 Process for preparing polymers with recurring succinyl units |
| 11/07/1996 | DE19516399A1 Verfahren zur Herstellung von Polymeren mit wiederkehrenden Succinyleinheiten A process for the preparation of polymers with repeating succinyl units |
| 11/06/1996 | EP0741184A1 Granulates of zeolite, process for their production and their use |