Abstract: Compositions and methods for cleaning metal and non-metal surfaces utilizing a nonionic surfactant and an enzyme are disclosed. A composition comprised of at least one nonionic surfactant and at least one enzyme and having a pH of between 6 and 9.5 is specifically disclosed. A method for cleaning a surface using this composition, and a method for cleaning a surface using a first composition comprising at least one nonionic surfactant and a second composition comprising at least one enzyme are also disclosed.
Abstract: Synergistic antimicrobial combinations comprising 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one and a mixture of a chlorinated isocyanurate and a bromide compound are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
Abstract: Novel conditioning polymers containing (meth)acrylamidopropyltrimethyl ammonium chloride, meth(acrylic acid) or 2-(meth)acrylamido-2-methylpropane sulfonic acid and, optionally, a C.sub.1 -C.sub.22 alkyl (meth) acrylate and the use thereof in a cosmetically acceptable medium for the treatment of a keratin-containing substrate are disclosed.
Type:
Grant
Filed:
September 24, 1998
Date of Patent:
May 23, 2000
Assignee:
Calgon Corporation
Inventors:
Allan L. Melby, Nicholas F. Vozza, Richard LaMar, Gary F. Matz
Abstract: A method for inhibiting microbial colonization of a surface in contact with an aqueous system is disclosed, which comprises adding to the system an amount of at least one compound including repeating ethylene oxide units.
Type:
Grant
Filed:
September 15, 1997
Date of Patent:
March 21, 2000
Assignee:
Calgon Corporation
Inventors:
Rodney M. Donlan, David L. Elliot, Nancy J. Kapp, Christopher L. Wiatr, Paul A. Rey
Abstract: A method for controlling and removing solid deposits from a surface of at least one component of a steam generating system, wherein the solid deposits are formed from an impurity introduced into the steam generating system, is disclosed.
Type:
Grant
Filed:
March 13, 1998
Date of Patent:
January 25, 2000
Assignee:
Calgon Corporation
Inventors:
Billy Dean Fellers, Sr., David M. Shenberger
Abstract: The present invention is directed to a polymer feed system and a method of using the same wherein clogging of the polymer input line is avoided by the use of air to purge the system of any unwanted polymer or electrolyte. The purging avoids the contact of the water with the polymer and the build-up of unwanted activated polymer and clogging in the supply and in the subsequent conduits.
Abstract: Synergistic antimicrobial combinations consisting essentially of comprising 2,4,4'-trichloro-2'-hydroxydiphenyl ether and 1,2-dibromo-2,4-dicyanobutane are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.
Abstract: Methods for treating metal substrates are disclosed. These methods, which comprise contacting the surface to be treated with a composition comprising a Mannich-derivatized polyether, improve the corrosion resistance and/or adhesion properties of the treated surface. Similar methods for treating polymeric substrates are disclosed.
Type:
Grant
Filed:
December 5, 1997
Date of Patent:
October 26, 1999
Assignee:
Calgon Corporation
Inventors:
Shih-Ruey Thomas Chen, Yi Jin Warburton, Hong Ding
Abstract: A method for reducing turbidity in laundry waste water comprising the steps of treating said water with effective amounts of a first polymer comprised of a dialkyl diallyl ammonium halide containing (meth)acrylic acid moieties and a second anionic, nonionic or cationic acrylamide polymer is disclosed.
Abstract: Novel conditioning polymers containing (meth)acrylamidopropyltrimethyl ammonium chloride, meth(acrylic acid) or 2-(meth)acrylamido-2-methylpropane sulfonic acid and, optionally, a C.sub.1 -C.sub.22 alkyl (meth) acrylate and the use thereof in a cosmetically acceptable medium for the treatment of a keratin-containing substrate are disclosed.
Type:
Grant
Filed:
March 31, 1997
Date of Patent:
March 9, 1999
Assignee:
Calgon Corporation
Inventors:
Allan L. Melby, Richard LaMar, Nicholas F. Vozza, Gary F. Matz
Abstract: A method of use of a composition including either or both isomers of hydrogenated methylbenzotriazole, namely, 5-Methyl-1H-Benzotriazole or 4-Methyl-1H-Benzotriazole which have been at least about 50% hydrogenated, to form corrosion inhibiting films on metal surfaces in an aqueous environment. The hydrogenated methylbenzotriazole compositions provide both improved passivation and improved film persistence when charged to aqueous industrial systems either on a continuous or on an intermittent basis. Continuous dosing is generally kept at a constant >0.5, typically 1-2 ppm in the aqueous system to be treated; intermittent doses are generally 10-20 ppm once every week or two or more.
Type:
Grant
Filed:
December 1, 1997
Date of Patent:
February 23, 1999
Assignee:
Calgon Corporation
Inventors:
John P. Pilsits, Jr., Ann M. Cognetti, Jasbir S. Gill
Abstract: A chemical delivery and on-site blending system for producing multiple products is provided. Generally, chemical subcomponents are fed to a chemical blending system for making a multitude of products at the facility where the products are to be used. Also, a water line is connected to the system for blending with the subcomponents and for rinsing the system equipment. A microprocessor controls a series of inlet valves, a feed pump, and a mixer for formulating the products in a mixing tank. A flow meter monitored by the microprocessor measures the amounts of ingredients entering the tank. Once formulated, a product is discharged from the tank by a discharge pump also controlled by the microprocessor. Included with the system is a timed rinse cycle which rinses the tank after the product has been discharged.
Type:
Grant
Filed:
November 17, 1993
Date of Patent:
November 10, 1998
Assignee:
Calgon Corporation
Inventors:
J. Mitchell Rushing, Terry L. Scruggs, John J. Malone
Abstract: A chemical delivery and on-site blending system for producing multiple products is provided. Generally, chemical subcomponents are fed to a chemical blending system for making a multitude of products at the facility where the products are to be used. Also, a water line is connected to the system for blending with the subcomponents and for rinsing the system equipment. A microprocessor controls a series of inlet valves, a feed pump, and a mixer for formulating the products in a mixing tank. A flow meter monitored by the microprocessor measures the amounts of ingredients entering the tank. Once formulated, a product is discharged from the tank by a discharge pump also controlled by the microprocessor. Included with the system is a timed rinse cycle which rinses the tank after the product has been discharged.
Type:
Grant
Filed:
September 28, 1994
Date of Patent:
October 20, 1998
Assignee:
Calgon Corporation
Inventors:
J. Mitchell Rushing, Terry L. Scruggs, John J. Malone
Abstract: A fertilizer comprising a dewatered solid agricultural nutrient is disclosed. A method for preparing this fertilizer is provided including the steps of providing a raw agricultural waste to be treated, adding to the raw agricultural waste an effective amount of a composition comprising a quaternized amino methylated polyacrylamide polymer for separating the raw agricultural waste into a mixture having a separate clarified liquid portion and a separate dewatered nutrient solids portion, wherein the separated dewatered nutrient solids portion is a fertilizer, mixing the composition with the raw agricultural waste to facilitate the separation of the raw agricultural waste into the mixture, and subjecting the mixture to at least one mechanical separation means for segregating the separated clarified liquid portion from the fertilizer. An aqueous system comprising water, raw agricultural waste and a composition comprising a quaternized amino methylated polyacrylamide polymer is also disclosed.
Abstract: A method for separating raw agricultural waste into a liquid portion and a nutrient enriched solids portion is disclosed. This method includes providing raw agricultural waste to be treated, adding to the raw agricultural waste an effective amount of a composition comprising a quaternized amino methylated polyacrylamide polymer for separating the raw agricultural waste into a mixture having a liquid portion and a nutrient solids portion, mixing the composition with the raw agricultural waste to facilitate the separation, and subjecting the mixture to at least one mechanical separation means for segregating the separated liquid portion from the separated nutrient solids portion. A method for transforming raw agricultural waste into a clarified liquid portion and a dewatered nutrient enriched solids portion is also provided.
Abstract: 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.
Abstract: An alkylbenzotriazole, in combination with mercaptobenzotriazole, tolyltriazole, benzotriazole and/or 1-phenyl-5-mercaptotetrazole, is used to inhibit the corrosion of metallic surfaces, particularly copper surfaces, in contact with an aqueous system. Systems and compositions are also claimed.
Abstract: Methods and apparatus for monitoring and controlling pH, phosphate, and sodium to phosphate ratio in boiler systems operating with captive alkalinity chemistry are described. The methods for monitoring and controlling these parameters include the steps of determining the phosphate concentration via FIA, determining the pH, and using these values to determine the sodium to phosphate ratio. These values are then compared to the optimum values for the boiler system being treated; on the basis of this comparison, adjustments to the feed rate of water treatment chemicals being added to the system are then made. The apparatus includes a device for determining phosphate concentration via FIA, a device for determining pH, a means for determining sodium to phosphate ratio and a device for adjusting the feed rate of water treatment chemicals being added to the system. The device for adjusting the chemical feed rate is computer controlled.
Abstract: An improved method for treating over-sprayed, solvent-based paints which comprises adding an effective amount of a chelating agent to the circulating water of a paint spray booth, thereby improving the dispersibillty of solvent-based paints, particularly in high-hardness waters.
Abstract: A method for flocculating suspended solids from an aqueous system containing water and said suspended solids comprising adding to said aqueous system an effective amount of a flocculating agent, wherein said flocculating agent is a pourable non-aqueous, polymer composition containing less than about 5%, water and greater than 60%, polymer solids. The polymer of the instant polymer compositions may be anionic, non-ionic, cationic or amphoteric. Related compositions are also claimed.
Type:
Grant
Filed:
November 25, 1996
Date of Patent:
March 10, 1998
Assignee:
Calgon Corporation
Inventors:
Michael M. Carpenter, Ronald J. Falcione