Water-softening Or Purifying Or Scale-inhibiting Agents Patents (Class 252/175)
-
Patent number: 6063288Abstract: A method of controlling the deposition of silica-containing scales and their adhesion to surfaces in contact with an aqueous system is disclosed which comprises adding to the aqueous system an imidazoline or imidazoline derivative.Type: GrantFiled: June 30, 1998Date of Patent: May 16, 2000Assignee: BetzDearborn Inc.Inventor: Donald C. Roe
-
Patent number: 6054056Abstract: A pool buffer composition comprising about 90 to 91% by weight sodium bicarbonate; about 6.5% to about 7.5% by weight sodium carbonate; and at least one binder and/or clarifier. The composition is preferably in granular of compressed tablet form and is most advantageously used in the pool water filtration system slightly upstream of the introduction point of a chlorine pool treatment product introduction point. The product is especially advantageously used substantially simultaneously with the introduction of the chlorine pool treatment product.Type: GrantFiled: December 14, 1998Date of Patent: April 25, 2000Assignee: Church & Dwight Co., Inc.Inventors: John Maziuk, Jr., Mark Einziger, David Murawski, M. Stephen Lajoie
-
Patent number: 6051141Abstract: A method of treating water containing silicon-containing impurities in a concentration of up to 10,000 parts per million by weight of the water, by contacting the water over a period of time with a particulate solid which entrains silicon-containing impurities in the water and subsequently separating the water from the particulate solid, wherein the particulate solid is a high alumina cement which is anhydrous when first contacted by the water.Type: GrantFiled: February 5, 1998Date of Patent: April 18, 2000Assignee: Imerys Minerals LimitedInventors: Neil Robert Forbes, Thomas Richard Jones
-
Patent number: 6040406Abstract: Water-treatment compositions are provided which contain a water-soluble, water-treatment polymer and, optionally, additional water-treatment chemicals. The polymers are prepared from water-treatment monomers and a photo-inert, latently-detectable moiety which is covalently bonded to the polymer backbone. When the residue of the photo-inert moiety is contacted with an amount of a photoactivator which is effective to cause the residue of the photo-inert moiety to absorb within a wavelength ranging from 300 to 800 nanometers, the residue of the photo-inert moiety is detectable at concentrations of less than 100 parts per million. Methods are also provided which allow for the determination of the concentration of low levels, i.e., less than 100 ppm, of the water-treatment polymer present in an aqueous system.Type: GrantFiled: January 21, 1997Date of Patent: March 21, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: Allen M. Carrier, Robert W. R. Humphreys, Paul M. Petersen
-
Patent number: 6036740Abstract: Concentrated aqueous gypsum slurries containing small amounts of water soluble phosphonates are non-clogging when used in drip irrigation systems.Type: GrantFiled: February 9, 1998Date of Patent: March 14, 2000Inventors: John C. Miller, Deborah L. Miller
-
Patent number: 6019903Abstract: A corrosive acid sulfate geothermal brine is mixed with a near neutral, bicarbonate geothermal brine containing above about 300 ppm silica to produce a relatively benign mixed brine of pH from about 4.5 to about 6.5 having reduced corrosivity as compared to the acid sulfate brine and a reduced tendency as compared to the near neutral, bicarbonate brine for depositing silica in equipment during brine processing.Type: GrantFiled: August 14, 1998Date of Patent: February 1, 2000Assignee: Union Oil Company of CaliforniaInventor: Darrell L. Gallup
-
Patent number: 6001158Abstract: A method has been discovered for controlling bacterial growth using a dry biocide. Tetra-kis-hydroxymethyl-phosphonium sulfate (THPS) is adsorbed on a solid, particulate substrate through a spraying technique. The THPS in a dry form eliminates or reduces risks involved in handling and shipping the normally liquid THPS.Type: GrantFiled: February 18, 1999Date of Patent: December 14, 1999Assignee: Baker Hughes IncorporatedInventors: Eugene A. Elphingstone, Frank B. Woodworth
-
Patent number: 5980776Abstract: Phosphonic acid polymers are prepared from di- or polyphosphonic acids having one or more unsaturated C.dbd.C bonds (e.g. vinylidene-1,1-diphosphonic acid), either as homopolymers or as higher polymers with at least one further compound having unsaturated C.dbd.C bonds (e.g. acrylic acid). The polymers can be used as, or in connection with, flame-retardants, corrosion inhibitors, coatings, cements and ion exchange resins.Type: GrantFiled: September 24, 1997Date of Patent: November 9, 1999Assignee: Albright & Wilson UK LimitedInventors: Mohsen Zakikhani, David Robert Edward Walker, Peter David Hasling, Alan Craig Smith, Keith Philip Davis
-
Patent number: 5980758Abstract: The present invention provides a composition and method of administering same for inhibiting the growth of microorganisms. The composition of the present invention includes sufficient amounts of peracetic and a non-oxidizing biocide. The method of the present invention includes the step of adding sufficient amounts of peracetic acid and the non-oxidizing biocide to industrial process waters.Type: GrantFiled: June 15, 1998Date of Patent: November 9, 1999Assignee: Nalco Chemical CompanyInventors: Judy G. LaZonby, Robert E. McCarthy, Nancy L. Casselman
-
Patent number: 5958867Abstract: Sequestrant compositions comprising combinations of an alkali metal or ammonium borate with an adduct formed by reaction of an .alpha., .beta. unsaturated polycarboxylic acid with a mono- or dicarboxylated sugar, in which the adduct has at least two hydroxy groups in a vicinal configuration. The sequestrants can be used to complex alkaline earth and transition metal ions and are especially useful for complexing calcium and magnesium in aqueous laundry solutions. They also are effective for soil dispersion and for inhibiting the deposition of soil on fabric.Type: GrantFiled: May 21, 1998Date of Patent: September 28, 1999Assignee: U.S. Borax Inc.Inventors: Vincent Lamberti, Alice P. Hudson, Michael J. Greenhill-Hooper
-
Patent number: 5948315Abstract: A sunlight-ultraviolet-stable biocide composition for use in treating recreational and industrial water systems is disclosed which comprises an oxidizing halogen compound and a stabilizer, wherein the stabilizer is either benzenesulfonamide or a derivative thereof.Type: GrantFiled: April 14, 1998Date of Patent: September 7, 1999Assignee: Nalco Chemical CompanyInventors: Shunong Yang, William F. McCoy
-
Patent number: 5942115Abstract: Disclosed is a combined flocculating and clarifying medium for flocculating and separating solid particles from waste water comprising a mixture of solid filtering or aggregating particles and a dry flocculating agent effective to flocculate the solid particles to form larger and heavier aggregates with the filtering or aggregating particles in the waste water and filtering or gravity separating the formed aggregate from the waste water. Preferably, the filtering and aggregating particles are silicious particles, such as rice hull ash, diatomaceous earth, and perlite. The flocculating and clarifying medium can be combustible or can chemically fix the aggregated solid particles in a silicious cement, which solid particles can include heavy metal particles in silicious cement.Type: GrantFiled: March 20, 1997Date of Patent: August 24, 1999Assignee: enviroGuard, Inc.Inventor: Roy S. Rieber
-
Patent number: 5938970Abstract: Polynucleate metal hydroxide anionic compounds and method for their production. The compounds have the formula:M.sub.a N.sub.b (OH).sub.c X.sub.d Y.sub.e Z.sub.f.(H.sub.2 O).sub.gwhereinM is a tri- or more valent metal ion;N is a divalent metal ion that forms a soluble salt with anions X, Y or Z;OH represents the level of basicity;X is a monovalent anion;Y is a divalent anion;Z is a trivalent anion;a is 1;b is from 0.15 to 2.0;c is from 0.3 to 5;d is from 0 to 3;e is from 0.1 to 2.25;f is from 0 to 1; andg is greater than 4 where the compound is in the form of an aqueous solution, or from 0 to 20 where the compound is not in the form of an aqueous solution. The compounds are useful for water treatment for removal of suspended solids and for various applications in the paper industry.Type: GrantFiled: June 11, 1997Date of Patent: August 17, 1999Assignee: General Chemical CorporationInventors: Phillip B. Reilly, Jr., P. Brennan Reilly, III
-
Patent number: 5916447Abstract: A method for treatment of water in which an aqueous solution containing a freshly made polymerised iron substance is produced, the produced polymerised iron substance is aged sufficiently long to provide for efficient treatment of water, and the aqueous solution containing aged polymerised iron substance is added to the water to be treated.Type: GrantFiled: October 15, 1997Date of Patent: June 29, 1999Assignee: Eka Chemicals ABInventors: Felix Hulten, Goran Sivertsson
-
Patent number: 5885478Abstract: Water having alkalies selected from sodium, potassium and mixtures thereof dissolved therein is treated with a composition to reduce the concentration of the alkalies whereby the water is rendered usable according to ASTM standards to render the water usable as concrete mix water. The composition and the method of its use is disclosed herein, wherein the composition is selected from compounds in the group consisting of lithium carbonate, acid zirconium phosphate, carbon dioxide and mixtures thereof.Type: GrantFiled: October 29, 1997Date of Patent: March 23, 1999Assignee: Fritz Industries, IncInventors: Daniel P. Montgomery, Freda M. Bauer
-
Patent number: 5880060Abstract: Treatment compositions and a method are provided for the removal of a plurality of heavy metals and radioactive isotopes from wastewater. The treatment compositions comprise an alkali; adsorbents, such as montmorillonite and illite clays; catalysts, such as polyelectrolytes and sodium carbonate; one or more flocculants, such as a metal salt and calcium hydroxide; zirconium as a chelating and complexing agent; and boron as a neutron absorbent. The selected composition is introduced into and mixed with the wastewater, which is then filtered to produce a sludge containing the contaminants.Type: GrantFiled: August 28, 1996Date of Patent: March 9, 1999Inventors: Barbara Blake, Alexander Blake, William John Lacy
-
Patent number: 5876623Abstract: A biodegradable anti-scalant for steam generators, boilers and other heat transfer equipment is provided. Anti-scalants prepared in accordance with the present invention include aspartic acid, poly(aspartic acid) and copolymers of aspartic acid and functionalized aspartic acid. Anti-scalants provided in accordance with the present invention are biodegradable and therefore more environmentally friendly than currently available anti-scalant for use with hard water. Methods and use of making anti-scalants are also provided.Type: GrantFiled: September 20, 1996Date of Patent: March 2, 1999Assignee: Nalco Chemical CompanyInventors: Jiansheng Tang, Donald E. Govoni
-
Patent number: 5871663Abstract: An improved process for delignification of lignocellulosic raw material, such as wood chips, for the production of cellulose pulps for use in the manufacture of paper or paperboard and an improved pulping aid composition for use in said process are disclosed wherein the wood chips are treated in a closed reaction vessel with an alkaline pulping liquor with an amount of a cyclic keto compound, such as anthraquinone, included therein for achievement of a determined pulp yield, wherein the improvement comprises a reduction in the amount of anthraquinone required to achieve said yield by the addition to said alkaline pulping liquor, in addition to a reduced amount of the anthraquinone, a surfactant mixture comprising at least one alkyl alcohol alkoxylate and at least one polyoxyalkylene glycol ether of an ester of an acid selected from the group consisting of ricinoleic acid and 12-hydroxystearic acid.Type: GrantFiled: March 11, 1997Date of Patent: February 16, 1999Assignee: Westvaco CorporationInventor: William T. Turner
-
Patent number: 5872089Abstract: A descalant means, comprising L.sub.E structured liquid crystals which when placed close to, or into a liquid stream, cause the formation of microscopic liquid crystalline structures, which act as nucleation sites for the formation of crystal structures of normally liquid-soluble or insoluble salts, and other suspended particles, these crystalline structures being chemically stable and causing a large reduction in the scaling potential of the liquid, thereby avoiding scale buildup on metal or other containment surfaces and also initiating descaling of surfaces already containing scale buildup. Furthermore, said means will reduce the amount of detergents, soaps, surfactants and polymers required in washing and other forms of water use.Type: GrantFiled: January 18, 1996Date of Patent: February 16, 1999Assignee: American Technologies Group, Inc.Inventor: Shui-Yin Lo
-
Patent number: 5869029Abstract: This invention provides compositions comprising particulate water-soluble or water-swellable polymer at least partially agglomerated by treatment with at least one polyol, wherein the polyol is present at a level greater than about 10 wt. % based on the total weight of the composition. The particulate water-soluble or water-swellable polymer which has been at least partially agglomerated by treatment with polyol hydrates in water-containing solvents substantially faster than untreated water-soluble or water-swellable polymer, without formation of polymer lumps. The invention further provides an improved process for preparing a toothpaste composition comprising at least one dry, water-soluble or water-swellable polymer, the improvement comprising substituting for the dry, water-soluble or water-swellable polymer, particulate water-soluble or water-swellable polymer which has been at least partially agglomerated by treatment with polyol.Type: GrantFiled: June 21, 1996Date of Patent: February 9, 1999Assignee: Hercules IncorporatedInventors: Arne Graff-Andersen, Jashawant J. Modi
-
Patent number: 5866014Abstract: Arsenic and TOC are removed from drinking water or wastewaters by use of finely-divided metallic iron in the presence of powdered elemental sulfur or other sulfur compounds such as manganese sulfide, followed by an oxidation step. A premix may be produced for this process, by adding the iron, sulfur and oxidizing agent to water in a predetermined pH range. The iron and sulfur are mixed for a period of time dependent upon the temperature and pH of the water and the presence of complexing or sequestering minerals and organic acids in the water. An oxidizing agent is added to the mixture and agitating is continued. In a preferred embodiment the oxidizing agent is hydrogen peroxide. Water is decanted from the mixture after a sufficient reaction time, to produce a concentrated premix. This premix can be added to water intended for drinking or to industrial effluents containing toxic materials.Type: GrantFiled: November 4, 1996Date of Patent: February 2, 1999Inventor: Peter F. Santina
-
Patent number: 5861524Abstract: Oligomeric fluoroalkylsiloxanes corresponding to the formula: ##STR1## wherein x is 0 to 3, y is 0, 1, or 2; z is 0 or 1; x+y>0, and R has the formula --C.sub.a H.sub.2a --O.sub.b --C.sub.d H.sub.2c --C.sub.d F.sub.2d+1 in which a is 2-4, b is 0 or 1, c is 0-8 and d is 4-12, and compositions thereof with an oil, are useful as spreading agents and in agricultural applications.Type: GrantFiled: April 22, 1997Date of Patent: January 19, 1999Assignee: OSi Specialties, Inc.Inventors: Gerald J. Murphy, Seisaku Kumai, Jeffrey A. Cooke, Yutaka Furukawa, George A. Policello
-
Patent number: 5851406Abstract: A method to prevent the degradation of water soluble film placed in contact with halogenated hydantoin or chlorinated cyanuric acid and an apparatus for disinfecting water systems. Halogenated 5,5-dialkyl hydantoin or chlorinated cyanuric acid is combined with a stabilizing agent to prevent the halogenated hydantoin or chlorinated cyanuric acid from discoloring or degrading a polymeric film which it may contact. The oxidizing agent includes alkaline hydroxide, alkaline carbonates, alkaline bicarbonates, alkaline phosphates, alkaline silicates, and alkaline borates. Polymeric films for which this is suitable include 2-hydroxy propyl cellulose and poly(vinyl alcohol).Type: GrantFiled: November 22, 1995Date of Patent: December 22, 1998Assignee: Bio-Lab, Inc.Inventors: Ronald L. Jones, P. Kirk Mitchell
-
Patent number: 5824239Abstract: A method for removing biguanide from aqueous sources, such as swimming pools, is disclosed. The method includes the steps of bringing at least one polymeric metaphosphate into contact with the aqueous source in a sufficient concentration to form particles containing the biguanide. The particles containing at least a portion of the biguanide can then be removed by various means, including filtration or vacuuming.Type: GrantFiled: August 14, 1997Date of Patent: October 20, 1998Assignee: Buckman Laboratories International, Inc.Inventor: Percy A. Jaquess
-
Patent number: 5814233Abstract: A method of remediating methyl amine and/or methyl amine derivative odors in aqueous systems by contacting the methyl amine or methyl amine derivative with a compound having amide or imide functionality, such as a hydantoin composition, in the presence of hydrogen peroxide. The amide/imide composition is preferably a non-halogenated, singe-ring hydantoin that binds methyl amines to the amide or imide functional group of the hydantoin.Type: GrantFiled: November 10, 1997Date of Patent: September 29, 1998Assignee: Great Lakes Chemical CorporationInventors: Ron Starkey, Kysler DeGuzman, Geoffrey A. Brown, P. Kirk Mitchell
-
Patent number: 5814209Abstract: Disclosed is a process for the ecological usage of acid effluents. Also disclosed is a sorption agent which is characterized in that an acid effluent, created from the production of fullers earth which contains as main ingredients Fe.sup.2+/3+ -, Al.sup.3+ -, Ca.sup.2+ - and Mg.sup.2+ cations and inorganic anions, is reacted with an alkali silicate. The resultant precipitate is separated in an aqueous phase and, when necessary, purified and dried. The sorption agent can be used for the bleaching of oils or for the removal of soaps, phospholipids and heavy metals from oils, specifically edible oils.Type: GrantFiled: October 2, 1994Date of Patent: September 29, 1998Assignee: Sud-Chemie AGInventors: Reinhard Hahn, Klaus Schurz, Hans Buckl, Wolfgang Eisenschmid
-
Patent number: 5811032Abstract: A water-soluble polymer prepared by melting and reacting a mixture of an oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, or a mixture of a plurality of oxycarboxylic acids including at least one oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, at a temperature of 170.degree. C. or less at the start of the reaction to obtain a polymer; and then hydrolyzing the polymer.Type: GrantFiled: September 19, 1996Date of Patent: September 22, 1998Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Ryozo Kawai, Hiroshi Kurata, Yukari Shimizu, Shoichiro Kajiwara
-
Patent number: 5807496Abstract: Compositions comprising polyamine and melamine polymers in certain ratios are provided for coagulating suspended solids in wastewaters such as deinking process waters and raw waters.Type: GrantFiled: September 19, 1996Date of Patent: September 15, 1998Assignee: Cytec Technology Corp.Inventor: Gerald Guerro
-
Patent number: 5800716Abstract: A process for the treatment of aqueous acidic liquors containing dissolved aluminum and/or iron compounds to produce an aluminum and/or iron sulfate water-treatment product is characterized by the combination of steps comprising contacting the liquor with a basic material capable of reacting with the dissolved aluminum and/or iron compound to precipitate aluminum and/or iron values, separating the precipitate in the form of a cake or slurry from the remaining liquor, treating the cake or slurry with sulfuric acid to re-dissolve aluminum and/or iron values and to produce a solution of aluminum and/or iron sulfate and separating suspended solid matter from the solution. The liquor may be a waste product from industrial processes or may be a mine effluent and the process avoids the need to dispose of these to waste.Type: GrantFiled: July 17, 1996Date of Patent: September 1, 1998Assignee: Laporte Industries LimitedInventors: Neil Clarke, John Harris Newton
-
Patent number: 5792365Abstract: A process to purify polar liquid wastes consists in treating the wastes with a flocculating composition formed by a concentrated suspension of montmorillonite into a polar liquid, and preferably into the same polar liquid waste to be treated. Selected pH and concentration ranges are determined in order to obtain short or very short contact times and a complete purification of the treated polar liquid wastes.Type: GrantFiled: March 31, 1997Date of Patent: August 11, 1998Assignee: Italtraco S.r.l.Inventor: Alberto Torini
-
Patent number: 5785867Abstract: The present invention provides a composition and method of administering same for inhibiting the growth of microorganisms. The composition of the present invention includes sufficient amounts of a peracetic acid or peracetic acid/peracid blend and a non-oxidizing biocide. The method of the present invention includes the step of adding sufficient amounts of the peracetic acid or peracetic acid/peracid blend and the non-oxidizing biocide to industrial process waters.Type: GrantFiled: April 30, 1997Date of Patent: July 28, 1998Assignee: Nalco Chemical CompanyInventors: Judy G. LaZonby, Robert E. McCarthy, Nancy L. Casselman
-
Patent number: 5772913Abstract: An aqueous system containing scale forming salts including both calcium carbonate and calcium phosphate and characterized by high pH and high calcite concentrations which further contains a synergistic effective amount of a combination comprising (A) a polyether polyamino methylene phosphonate, (B) a terpolymer comprising the monomers of acrylic acid, sulfophenoxymethallyl ether and maleic acid, (C) a hydroxyphosphonoacetic acid, and (D) a phosphonocarboxylic acid copolymer comprising the monomers of acrylic acid, telomer with (1-hydroxy-1-methylethyl) phosphinic acid monosodium salt, and 2-acrylamido 2 methylpropane sulfonic acid, is disclosed. A method for inhibiting the formation, deposition and adherence of such scale forming salts in the aqueous system employing the synergistic combination is also provided.Type: GrantFiled: September 24, 1996Date of Patent: June 30, 1998Assignee: Calgon CorporationInventors: Jasbir S. Gill, Jennifer R. Parsons
-
Patent number: 5770553Abstract: The use of polyaspartic acid prepared by polycondensation of aspartic acid in the presence of phosphoric acid in a molar ratio of from 1:0.05 to 1:10 at temperatures of at least 120.degree. C. to give polysuccinimide, and subsequent hydrolysis of the polysuccinimide with bases to give at least partially neutralized polyaspartic acid, as additive to detergents and cleaners in amounts of from 0.1 to 10% by weight, and detergents and cleaners which contain polyaspartic acids prepared in the presence of phosphoric acid.Type: GrantFiled: May 20, 1996Date of Patent: June 23, 1998Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Gunnar Schornick, Richard Baur, Alexander Kud, Volker Schwendemann
-
Patent number: 5762807Abstract: A composition for treating water or flue gases that contains metal ions and possibly also organic and/or inorganic compounds is produced by reacting sulfur with an alkali- and/or alkaline earth metal hydroxide in the presence of water.The inventive composition corresponds to general formula IM.sub.x S.sub.y O.sub.z, (I)where M represents an alkali or alkaline earth metal,x is 1 or 2,y is in the range 0.5x-4.0x, andz is in the range 0.1-2.5.Alkali sulfite salts, particularly sodium salts, may also be added to the compound for reducing H.sub.2 S emission.Type: GrantFiled: September 13, 1995Date of Patent: June 9, 1998Inventor: Gunter Straten
-
Patent number: 5755990Abstract: Sequestrant compositions comprising combinations of an alkali metal or ammonium borate with an adduct formed by reaction of an .alpha., .beta. unsaturated polycarboxylic acid with a mono- or dicarboxylated sugar, in which the adduct has at least two hydroxy groups in a vicinal configuration. The sequestrants can be used to complex alkaline earth and transition metal ions and are especially useful for complexing calcium and magnesium in aqueous laundry solutions. They also are effective for soil dispersion and for inhibiting the deposition of soil on fabric.Type: GrantFiled: April 26, 1996Date of Patent: May 26, 1998Assignee: U.S. Borax Inc.Inventors: Vincent Lamberti, Alice P. Hudson
-
Patent number: 5736032Abstract: Biowaste treatment agents for treating biowastes in a manner which: (a) keeps noxious and toxic substances from being released from the biowaste, and (b) neutralizes such substances released during the course of stabilizing the biowaste. The treatment agents include a surfactant in an amount of from 1.0 to 99 percent of the treatment agent, a metal component in an amount from 0.5 to 85 percent of the treatment agent, the metal component including a source of zinc, or copper, or a combination of copper with aluminum or iron, and an aldehyde in an amount from 0.1 to 80 percent of the treatment agent.Type: GrantFiled: October 11, 1996Date of Patent: April 7, 1998Inventors: James P. Cox, Robert W. Duffy Cox
-
Patent number: 5726280Abstract: Sulfonic acid group-containing polyaspartic acid derivatives, some of which are novel, having repeating units of the structures I and II ##STR1## in which ##STR2## are suitable for water treatment and as a detergent additive.Type: GrantFiled: April 8, 1996Date of Patent: March 10, 1998Assignee: Bayer AGInventors: Hermann Uhr, Lutz Heuer, Torsten Groth, Winfried Joentgen, Roland Kleinstuck
-
Patent number: 5700377Abstract: A chemical composition for use in purifying water used in swimming pools having surfaces that are comprised of materials that do not react with or dissolve in water, comprising for 2.5 kg of the chemical composition, 1.25 kg of potassiumpersulphate, 300 g of sodium bisulfate, 250 g of ammonium chloride, 100 g of aluminum sulfate, 250 g of sodium bicarbonate, 250 g of calcium chloride and 100 g of ethylendiamine tetra acetic acid (abbreviated EDTA). The potassiumpersulfate and the ammonium chloride are effective in disinfecting water to be purified and in eradicating algae and bacteria therein. The sodium bisulfate, sodium bicarbonate and the calcium chloride are effective in balancing the pH of water to be purified to a pH value within an optimum range between 7.2 and 7.6. The aluminum sulfate serves as a flocculation aid and the copper sulfate is effective in the eradication of black algae. The EDTA is effective to complexing heavy metals in the water.Type: GrantFiled: June 18, 1996Date of Patent: December 23, 1997Inventor: Peter Glen Cox
-
Patent number: 5698108Abstract: A formaldehyde reduction composition which comprises from about 0.1% to about 0.6% by weight of a water soluble lignosulfonate salt, from about 22% to about 28% by weight of a di- or tri- alkylene amine, from 0% to about 28% by weight of di- or tri- alkanol amine, and from about 43.4 about 77.9% water. The composition is particularly useful in the treatment of aqueous media, especially calcium carbonate and kaolin mineral slurries which have been treated with a formaldehyde-releasing biocide.Type: GrantFiled: November 13, 1996Date of Patent: December 16, 1997Assignee: Vinings Industries, Inc.Inventor: Nelya Okun
-
Patent number: 5658467Abstract: The present invention provides a composition and method of administering same for inhibiting the growth of microorganisms. The composition of the present invention includes sufficient amounts of a peracetic acid and a non-oxidizing biocide. The method of the present invention includes the step of adding sufficient amounts of the peracetic acid and the non-oxidizing biocide to industrial process waters.Type: GrantFiled: November 15, 1995Date of Patent: August 19, 1997Assignee: Nalco Chemical CompanyInventors: Judy G. LaZonby, Robert E. McCarthy, Nancy L. Casselman
-
Patent number: 5639832Abstract: Process for the preparation of products of the reaction of polyaspartimides and amino acids by reaction of amino acids with polyaspartimides in aqueous medium at pH values at which at least 5% of the amino groups in the amino acids are in non-protonated form in equilibrium with the protonated form, and use of the reaction products obtainable in this way and of products of the reaction of polyaspartimides with alkanolamines or aminated C.sub.1 -C.sub.30 -fatty alcohol alkoxylates which contain as copolymerized units up to 50 mol % of ethylene oxide and/or propylene oxide per mol of fatty alcohol, as additive to detergents and cleaners, as scale inhibitor and as dispersant.Type: GrantFiled: September 6, 1995Date of Patent: June 17, 1997Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Gunnar Schornick, Dieter Boeckh, Richard Baur, Birgit Potthoff-Karl, Volker Schwendemann, Christian Schade, Alexander Kud
-
Patent number: 5615862Abstract: A powdered composition for treating spent dry film stripping and/or developing solutions comprising: 10 to 70 percent by weight of an aluminum source, such as aluminum sulfate, aluminum chloride; and 28 to 90 percent by weight of siliceous particulates, such as diatomaceous earth, sodium potassium aluminum silicate or expanded perlite. The powdered composition may also include 3 to 35 percent by weight of a metal precipitation agent, such as trimercapto-s-triazine, sodium dimethyldithiocarbamate, starch xanthate, sodium diethydithiocarbamate and thio red, to precipitate the metal from the spent solutions and/or 0 to 10 percent by weight of a dust-suppression agent such as water or propylene glycol. A method of using the disclosed compositions is also revealed in this application.Type: GrantFiled: February 2, 1995Date of Patent: April 1, 1997Inventor: Robert M. Gaudette
-
Patent number: 5614161Abstract: The invention relates to a crystalline sheet sodium silicate of the general formulaxNa.sub.2 O.multidot.ySiO.sub.2 .multidot.zP.sub.2 O.sub.5in whichthe ratio of x to y corresponds to a number from 0.35 to 0.6,the ratio of x to z corresponds to a number from 1.75 to 1200and the ratio of y to z corresponds to a number from 4 to 2800,a process for its preparation and its use.Type: GrantFiled: February 21, 1996Date of Patent: March 25, 1997Assignee: Hoechst AktiengesellschaftInventors: Jan Wilkens, Gunther Schimmel
-
Patent number: 5611853Abstract: A composition of matter comprising naturally-occurring humic allophane soil or Ando soil as an essential ingredient admixed with a binder material, said composition is useful in preparation of solid media effective as deodorant, absorbent, adsorbent and the like for treating fluids, in particular contaminated water and malodor air.Type: GrantFiled: September 6, 1995Date of Patent: March 18, 1997Assignees: Haruo Morimoto, Katusi Maeno, Takahiro YamadaInventor: Haruo Morimoto
-
Patent number: 5607911Abstract: A biodegradable, acidic aqueous composition, with an anionic surfactant for the removal of rust, inorganic and organic deposits from a variety of surfaces. Said composition comprising Hydrochloric Acid, Phosphoric Acid, Tetrasodium EDTA, Anionic Surfactant, Perfume Oil, Dye and Water.Type: GrantFiled: April 22, 1996Date of Patent: March 4, 1997Inventors: Scott Levin, Eric Levin, Joseph Levin
-
Patent number: 5603862Abstract: There disclosed a boiler compound which comprises as the effective components thereof: (A) metabisulfurous acid or metabisulfites; (B) aliphatic dicarboxylic acids or salts thereof represented by the general formula:M.sup.1 OOC--(CH.sub.2).sub.n --COOM.sup.,wherein M.sup.1 and M.sup.2 are each a hydrogen atom, a sodium atom, a potassium atom or an ammonium group and n is an integer of 1 to 10; and optionally (C) a water-soluble polymer for scale inhibitor. The boiler compound is safe for human health, has excellent stability, can be used as a liquid formulation having anticorrosion activity (activity of eliminating oxygen) or both of anticorrosion activity and antiscale activity and exhibits enhanced anticorrosion activity by increasing concentration of sulfite ion which is an oxygen scavenger.Type: GrantFiled: May 4, 1995Date of Patent: February 18, 1997Assignee: Kurita Water Industries Ltd.Inventors: Shiro Taya, Takayasu Ueda, Moriyasu Itoh
-
Patent number: 5597510Abstract: Coagulant compositions, advantageously solvent (water) solution thereof, well suited for the treatment/purification of impure aqueous media, e.g., surface waters, wastewaters, effluents, etc., via sedimentation technique, comprise (i) at least one basic aluminum polychloride or polychlorosulfate, (ii) at least one iron(II) and/or iron(III) compound, and (iii) at least one alkali metal and/or alkaline earth metal halide.Type: GrantFiled: May 24, 1994Date of Patent: January 28, 1997Assignee: Kemrhone FranceInventors: Sylvain Danda, Magnus Kvant, Yvette Pescher
-
Patent number: 5594096Abstract: A contaminant precipitating composition and method are disclosed. The composition comprises a water soluble branched polymeric composition effective for the purpose of precipitating contaminants from an aqueous solution. The method comprises adding an amount of the composition, effective for the purpose, to the aqueous solution so as to complex, precipitate and remove contaminants from the aqueous solution.Type: GrantFiled: March 1, 1996Date of Patent: January 14, 1997Assignee: BetzDearborn Inc.Inventors: William S. Carey, Ellen M. Meyer, Jeffrey H. Peltier
-
Patent number: 5589164Abstract: Biowaste treatment agents for treating biowastes in a manner which: (a) keeps noxious and toxic substances from being released from the biowaste, and (b) neutralizes such substances released during the course of stabilizing the biowaste. The treatment agents include a surfactant in an amount of from 1.0 to 99 percent of the treatment agent, a metal component in an amount from 0.5 to 85 percent of the treatment agent, the metal component including a source of zinc, or copper, or a combination of copper with aluminum or iron, and an aldehyde in an amount from 0.1 to 80 percent of the treatment agent.Type: GrantFiled: June 7, 1995Date of Patent: December 31, 1996Inventors: James P. Cox, Robert W. Duffy Cox
-
Patent number: 5587157Abstract: Biowaste treatment agents for treating biowastes in a manner which: (a) keeps noxious and toxic substances from being released from the biowaste, and (b) neutralizes such substances released during the course of stabilizing the biowaste. The treatment agents include a surfactant in an amount of from 1.0 to 99 percent of the treatment agent, a metal component in an amount from 0.5 to 85 percent of the treatment agent, the metal component including a source of zinc, or copper, or a combination of copper with aluminum or iron, and an aldehyde in an amount from 0.1 to 80 percent of the treatment agent.Type: GrantFiled: June 7, 1995Date of Patent: December 24, 1996Inventors: James P. Cox, Robert W. Duffy Cox