| 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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| 10/14/1987 | EP0241184A2 Use of carboxylic acid-sulfonic acid copolymers as aluminum ion stabilizers |
| 10/07/1987 | EP0239701A2 Method of removing scale from wet oxidation treatment apparatus |
| 10/06/1987 | US4698425 Chelating agents |
| 10/06/1987 | US4698161 Deposit prevention |
| 09/30/1987 | EP0238728A1 Corrosion inhibiting |
| 09/30/1987 | EP0192651A4 1,3 disubstituted aromatic cyclohexane imides and method of use thereof as chelating agents. |
| 09/16/1987 | EP0236989A2 Process for cleaning drains for waste water containing fatty substances. |
| 09/15/1987 | US4693829 Use of carboxylic acid/sulfonic acid copolymers as aluminum ion stabilizers |
| 09/09/1987 | EP0236220A1 Scale inhibitor and method of inhibiting scale |
| 09/09/1987 | CN87101665A Scale inhibitor and method of inhibiting scale |
| 09/08/1987 | US4692252 Method of removing scale from wet oxidation treatment apparatus |
| 08/25/1987 | US4689200 Systems inhibited against corrosion and/or scale deposition |
| 08/13/1987 | WO1987004696A1 Scale inhibitor |
| 08/13/1987 | DE3603605A1 Process for treating water in the aquifer to decrease the nitrate content |
| 08/12/1987 | EP0231762A2 Process for removing calcium carbonate formed during anaerobic treatment of organically loaded waste water |
| 08/04/1987 | CA1224999A1 Composition and method for inhibiting scale |
| 07/29/1987 | EP0230357A2 Method of treating an aqueous medium |
| 07/21/1987 | US4681686 Cotelomer compounds |
| 07/16/1987 | WO1987004143A1 Scale removal composition comprising alpha-hydroxy carboxylic acid and thickener |
| 07/15/1987 | EP0228593A2 Composition for cleaning water-containing devices |
| 07/15/1987 | EP0228501A2 Liquid agent for cleaning and descaling sanitary installations and method of manufacturing this agent |
| 07/14/1987 | US4680396 Bis(aminoalkyl)piperazine derivatives and their use as metal ion control agents |
| 07/14/1987 | US4680135 Carboxylic/sulfonic polymer and carboxylic/polyalkylene oxide polymer admixtures for use in iron oxide deposit control |
| 07/14/1987 | US4680125 Method of inhibiting the deposition of scale in an aqueous system |
| 07/14/1987 | US4680124 Polyacrylate scale inhibition |
| 07/01/1987 | CN86107456A Stabilization of iron in aqueous systems |
| 06/30/1987 | US4676911 Scale inhibitors which contain sulfate-containing polymers |
| 06/30/1987 | CA1223686A1 Acrylic terpolymers based water-soluble complexing agents for metalic cations, with a high complexing power and a strong threshold action |
| 06/16/1987 | US4673527 Water treating agents entrapped in soluable polymer matrix |
| 06/16/1987 | US4673508 Inhibition of calcium phosphate scale formation with a maleate polymer |
| 06/16/1987 | CA1222925A1 Method and product for preventing the formation of scale in water systems |
| 06/10/1987 | EP0225309A2 Aminomethylenephosphonate compositions |
| 06/10/1987 | EP0225051A1 The treatment of aqueous systems |
| 06/09/1987 | US4671934 Aminophosphonic acid/phosphate mixtures for controlling corrosion of metal and inhibiting calcium phosphate precipitation |
| 06/09/1987 | US4671888 Polyelectrolyte and surfactant compositions for controlling alkaline earth metal scales |
| 06/09/1987 | US4671880 Method for inhibiting aluminum-based deposition in water systems |
| 06/09/1987 | CA1222770A1 Method of making and using novel scale inhibiting terpolymer |
| 06/09/1987 | CA1222749A1 Process of inhibiting corrosion of metal surfaces and/or deposition of scale thereon |
| 06/04/1987 | WO1987003275A1 Electronic control and dosing system for desalinators |
| 06/03/1987 | EP0224346A2 Scale removal treatment in subterranean formations |
| 06/02/1987 | US4670157 Enhanced oil recovery; injection wells |
| 06/02/1987 | US4670150 Mixing with softener and precipitated hardness impurities then removal a segment and filtration |
| 05/21/1987 | DE3540164A1 Filter apparatus for neutralizing acidic condensates from exhaust gases |
| 05/19/1987 | US4666623 Granular aminomethylenephosphonate |
| 05/19/1987 | US4666609 Maleic acid or anhydride polymer and (meth) acrylamide polymer |
| 05/12/1987 | US4664839 Ion exchanging |
| 05/06/1987 | EP0220726A2 Stabilization of iron in aqueous systems |
| 05/05/1987 | US4663054 Hot process liquid treatment method and apparatus |
| 05/05/1987 | US4663053 Method for inhibiting corrosion and deposition in aqueous systems |
| 04/30/1987 | DE3537808A1 Process for the preparation of mixtures of methylenephosphonic acid-substituted hydroxyethylethylenediamines and use of the mixtures |
| 04/28/1987 | US4661261 Adding citric acid or its salts |
| 04/23/1987 | DE3537696A1 Process for selectively obtaining phosphoric diesters from a mixture of phosphoric monoester and diester |
| 04/22/1987 | EP0218798A2 Process and composition for inhibiting corrosion and incrustation in water systems |
| 04/21/1987 | US4659482 Water treatment polymers and methods of use thereof |
| 04/21/1987 | US4659481 Copolymer of acrylic acid or salt with alyl hydroxypropyl sulfonate ether |
| 04/21/1987 | US4659480 Terpolymer of ethylenically unsaturated compounds with allyl alkylene phosphite ethers |
| 04/21/1987 | CA1220782A1 Methylene phosphonic acid scale inhibitor compositions derived from aminohydrocarbylpiperazine- urea adducts |
| 04/15/1987 | EP0218351A2 Acrylic acid/2-acrylamido-2-methylpropylsulphonic acid/2-acrylamido-2-methylpropyl phosphonic acid polymers and their use as scale and corrosion inhibitors |
| 04/14/1987 | US4657679 AMPIQ copolymers as scale inhibitors |
| 04/09/1987 | WO1987001965A1 Process and agent for water treatment |
| 04/02/1987 | DE3534472A1 Verfahren und mittel zur wasserbehandlung Methods and means for treating water |
| 03/25/1987 | EP0215655A1 Method of inhibiting boiler corrosion and compositions for it |
| 03/24/1987 | US4652377 Inhibition of alkaline earth sulfate scales |
| 03/24/1987 | CA1219511A1 Deposit control method and composition |
| 03/18/1987 | EP0214577A2 Method of reducing water hardness |
| 03/17/1987 | US4650844 Scale inhibitors for preventing calcium phosphate and other scales |
| 03/17/1987 | US4650591 Acrylic acid/2-acrylamido-2-methylpropylsulfonic acid/2-acrylamido-2-methylpropyl phosphonic acid polymers as scale and corrosion inhibitors |
| 03/17/1987 | CA1219199A1 Cooling system cleaning composition |
| 03/17/1987 | CA1219184A1 Inhibition of the staining of porcelain surfaces by manganese |
| 03/10/1987 | US4649036 Process for the manufacture of zeolites 4A having a high crystallinity and a fine granulometry and being particularly suitable for the formulation of detergent compositions |
| 03/04/1987 | EP0212894A2 Removal of iron fouling in cooling water systems |
| 03/03/1987 | US4647381 Scale inhibitors for preventing or reducing calcium phosphate and other scales |
| 02/18/1987 | CN85106280A Scale inhibition in water systems |
| 02/17/1987 | CA1217986A1 Thermal softening process |
| 02/11/1987 | CN86105761A Method of removing boiler scales |
| 02/10/1987 | US4642194 Method for prevention of phosphonate decomposition by chlorine |
| 02/10/1987 | CA1217692A Method of dispersing inorganic materials in aqueous systems with low molecular weight acrylic acid copolymers |
| 02/10/1987 | CA1217691A Method of inhibiting scaling in aqueous systems with low molecular weight copolymers |
| 02/04/1987 | EP0210590A2 Polymeric additives for water |
| 02/03/1987 | US4640793 Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
| 01/27/1987 | US4639490 Process for preparing novel copolymer |
| 01/21/1987 | EP0209260A2 Biocidal mixture |
| 01/21/1987 | EP0208767A1 Solution for cleansing a cooling system |
| 01/06/1987 | US4634533 Method of converting brines to useful products |
| 01/06/1987 | US4634532 Orthophosphate-containing desalination scale inhibitors |
| 12/31/1986 | CN85105048A Method of recovery and circulating use of waste brine |
| 12/30/1986 | EP0206974A2 Apparatus employing an aqueous solution |
| 12/30/1986 | EP0206814A2 Water-soluble polymers and their use in the stabilization of aqueous systems |
| 12/30/1986 | CA1215822A1 Scale control in flue gas desulfurization |
| 12/23/1986 | US4631135 Reduce biofouling of system by providing support surface |
| 12/23/1986 | US4631131 Method for inhibiting scale |
| 12/16/1986 | CA1215302A1 Hydrochloric acid compositions and their use |
| 12/04/1986 | WO1986007099A1 Patina remover, process for its preparation, and method for removing patina |
| 12/03/1986 | EP0203734A1 Methods and compositions for increasing plant growth |
| 12/02/1986 | CA1214630A1 Water treatment composition |
| 11/18/1986 | CA1214183A1 2-acrylamido-2-methyl-propanephosphonic acid and their salts, process for the preparation thereof and use thereof for the manufacture of copolymers |
| 11/18/1986 | CA1214087A1 High calcium tolerant deposit control method |
| 11/12/1986 | EP0200776A1 Solution process and solvent for hardly soluble carbonates. |
| 10/28/1986 | CA1213246A1 Electrostatic water treatment |
| 10/21/1986 | US4618448 Carboxylic/sulfonic/polyalkylene oxide polymer for use as scale, corrosion, and iron oxide deposit control |