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| Number | Title | Issue Date |
| 6461518 | Method for inhibiting the formation and deposition of silica scale in water systems This invention relates to a method for inhibiting the formation and deposition of silica scale in water systems. The method includes treating the water in such water systems with an effective amount of a polyamide that contains secondary amine and/or ethe... | 10/08/2002 |
| 6451169 | Structurally rigid polymer coagulants as retention and drainage aids in papermaking This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid polymeric coagulant and an effective flocculating amount of a flocculant and a micr... | 09/17/2002 |
| 6444091 | Structurally rigid nonionic and anionic polymers as retention and drainage aids in papermaking This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid nonionic or anionic polymer.... | 09/03/2002 |
| 6440476 | Method to improve quality and appearance of leafy vegetables by using stabilized bromine A method to extend the shelf-life, reduce the microbial load, and enhance product appearance and quality in leafy vegetables or other fresh commodities of the like comprising applying directly to the leafy vegetable a stabilized aqueous alkali or alkaline... | 08/27/2002 |
| 6436711 | Fluorometric control of aromatic oxygen scavengers in a boiler system A method of automatically controlling the addition rate of Fresh Oxygen Scavenger Product and Ultimate Oxygen Scavenger Product to a Boiler System is described and claimed. The method is based on the inherent fluorometric properties of certain Fresh Oxyge... | 08/20/2002 |
| 6432271 | Method of increasing retention and drainage in papermaking using high molecular weight water-soluble anionic or nonionic dispersion polymers This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer.... | 08/13/2002 |
| 6426383 | Preparation of water soluble polymer dispersions from vinylamide monomers The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers.... | 07/30/2002 |
| 6423267 | Stable oxidizing bromine formulations, method of manufacture and uses thereof for biofouling control Stable biocide formulations containing oxidizing bromine are provided for biofouling control in industrial water systems. The formulations contain at least one stable oxidizing bromine compound that is prepared from at least one oxidizing chemical reagent... | 07/23/2002 |
| 6423801 | Branched polyammonium compounds of high molecular weight and processes for producing said compounds The invention is concerned with water soluble high-molecular weight quaternary ammonium graft polymer, wherein ammonium salt side chains are grafted onto a polyamine backbone under free radical conditions, and wherein the initiator system comprises a free... | 07/23/2002 |
| 6419879 | Composition and method for controlling biological growth using stabilized sodium hypobromite in synergistic combinations A synergistic composition and method for controlling biological growth in industrial fluids are disclosed, wherein the composition comprises stabilized sodium hypobromite and at least one compound selected from the group consisting of coco alkyldimethylam... | 07/16/2002 |
| 6413433 | Method for dewatering of sludge A process for dewatering of sludge, wherein said sludge comprises solids and water, comprising the steps of: a) adding a cationic dispersion polymer and a microparticle to said sludge, wherein said cationic dispersion polymer can be added before or after or ... | 07/02/2002 |
| 6403726 | Water soluble polymer containing dithiocarbamate functionalities The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dith... | 06/11/2002 |
| 6398967 | Method of clarifying water using low molecular weight cationic dispersion polymers This invention is directed to a method of clarifying water comprising adding to the water an effective clarifying amount of a low molecular weight water-soluble cationic dispersion polymer prepared by polymerizing one or more cationic monomers and one or ... | 06/04/2002 |
| 6380431 | Fluorescent monomers Fluorescent monomers are described and claimed.... | 04/30/2002 |
| 6379720 | Compositions containing hops extract and their use in water systems and process streams to control biological fouling Biological fouling is effectively controlled in water systems and process streams through the addition of hops extract.... | 04/30/2002 |
| 6375829 | Method and apparatus for measuring scaling capacity of calcium oxalate solutions using an electrochemically controlled pH change in the solution proximate to a piezoelectric microbalance This invention is directed to a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of from about 2 to about 3 comprising measuring the rate of deposition of calcium oxalate scale f... | 04/23/2002 |
| 6372882 | Method for producing substantially dry water-insoluble polymers for improved flocculation in the bayer process The present invention is a method of producing substantially dry water insoluble polymers from poly alkyl esters of vinylic monomers for use in a method for the clarification of red mud-containing liquors generated in the Bayer process for the recovery of... | 04/16/2002 |
| 6372806 | Method of making colloidal silica Disclosed are stable, aqueous colloidal silicas having surface area of greater than 700 m2 /g and S-values of from 20-50. These colloidal silicas do not require treatment with surface treatment agents such as aluminum to achieve stability. Thes... | 04/16/2002 |
| 6372805 | Colloids comprising amorphous borosilicate Colloids comprising amorphous borosilicate particles, wherein said borosilicate particles are not borosilicate glass; are described and claimed. These colloids have been found to be useful in aqueous systems, specially in papermaking.... | 04/16/2002 |
| 6372089 | Method of making paper Disclosed are stable, aqueous colloidal silicas having surface area of greater than 700 m2 /g and S-values of from 20-50. These colloidal silicas do not require treatment with surface treatment agents such as aluminum to achieve stability. Thes... | 04/16/2002 |
| 6369182 | Cationic latex terpolymers for wasterwater treatment This invention is directed to a cationic terpolymer comprising (a) a first monomer unit selected from acrylamide and methacrylamide; (b) a second monomer unit selected from dimethylaminoethyl acrylate methyl chloride quaternary salt, 3-(acrylamido)propyltrimethylam... | 04/09/2002 |
| 6365116 | Rheology modification of settled solids in mineral processing The present invention comprises a method for reducing the viscosity of the settled mud or underflow of a raked thickener thereby reducing the torque necessary to move the rake blade through the settled mud. The method includes the step of delivering a vis... | 04/02/2002 |
| 6365052 | Very high molecular weight cationic dispersion polymers for dewatering animal farm wastewater This invention is directed to a method of dewatering animal farm waste water comprising: (1) adding an effective amount of a cationic dispersion polymer having an RSV of at least 24, the dispersion polymer prepared by polymerizing under free radical formi... | 04/02/2002 |
| 6361653 | Method of increasing retention in papermaking using colloidal borosilicates The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculent and/or s... | 03/26/2002 |
| 6361652 | Method of increasing drainage in papermaking using colloidal borosilicates The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or s... | 03/26/2002 |
| 6358364 | Method for flocculating a papermaking furnish using colloidal borosilicates The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or s... | 03/19/2002 |
| 6358746 | Fluorescent compounds for use in industrial water systems Fluorescent compounds of the formula: ##STR1## wherein R1 and R2 are either both SO3 M, or one of R1 and R2 is SO3 M and the other is COOM, where M is selected from the group consisting of ... | 03/19/2002 |
| 6352675 | Process for removing heavy metals from a caustic fluid stream The present invention provides both reagents and a process for removing heavy metals from a caustic fluid stream by the addition of reagents which are not corrosive or deleterious. Specifically, the present invention is directed to removing heavy metals f... | 03/05/2002 |
| 6344531 | Fluorescent water-soluble polymers Water-soluble polymers of Formula Useful comprising from about 0.001 to about 10.0 mole percent of a Repeating Mer Unit represented by the formula: ##STR1## wherein a is an integer of from 1 to 10, R1 is selected from the group consisting ... | 02/05/2002 |
| 6336058 | Use of control matrix for boiler control Described and claimed is a method of controlling a boiler in which control is based on information from a control Matrix applicable to the specific parameters of the boiler. The control matrices include (a) Polymer Based All-in-One Product; (b) Residual P... | 01/01/2002 |
| 6331229 | Method of increasing retention and drainage in papermaking using high molecular weight water-soluble anionic or monionic dispersion polymers This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer.... | 12/18/2001 |
| 6329165 | Measurement and control of sessile and planktonic microbiological activity in industrial water systems A method for monitoring both the planktonic and sessile microbial populations in an industrial water system by the addition of a fluorogenic dye compound is described and claimed.... | 12/11/2001 |
| 6322749 | Composition and method for inhibiting the growth of microorganisms including stabilized sodium hypobromite and isothiazolones A synergistic composition and method for inhibiting microbiological growth which comprises a combination of stabilized sodium hypobromite with a mixture of 5-chloro-2-methyl 4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.... | 11/27/2001 |
| 6315866 | Method of increasing the dry strength of paper products using cationic dispersion polymers This invention is directed to method for improving the dry strength of a paper product using a single cationic dispersion polymer strength additive, wherein the cationic dispersion polymer is prepared by polymerizing in an aqueous solution of a polyvalent... | 11/13/2001 |
| 6315909 | Use of control matrix for cooling water systems control Described and claimed is a method of controlling a cooling water system in which control is based on information from a control Matrix applicable to the specific operating parameters of the cooling water system including: (i) providing a suitable fluorometer, ... | 11/13/2001 |
| 6312644 | Fluorescent monomers and polymers containing same for use in industrial water systems Fluorescent monomers of the formula ##STR1## wherein M is selected from the group consisting of hydrogen, sodium, potassium, cesium, rubidium, lithium and ammonium, and n is selected from the group consisting of 1, 2, 3, 4, 6 and 9; are provided which are usef... | 11/06/2001 |
| 6313246 | High molecular weight zwitterionic polymers This invention is directed to high molecular weight water-soluble zwitterionic polymers derived from zwitterionic and nonionic monomer units, and to the use of the polymers in papermaking processes.... | 11/06/2001 |
| 6310104 | Process for producing colloidal borosilicates The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or s... | 10/30/2001 |
| 6306308 | Inorganic composition, process of preparation and method of use A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effecti... | 10/23/2001 |
| 6293973 | Method of controlling oxalate precipitation in bayer process liquor A method is disclosed for controlling the precipitation of soluble sodium oxalate in Bayer process liquor which comprises adding a surface active quaternary ammonium compound to the Bayer process liquor and then subsequently adding a mixture of a hydropho... | 09/25/2001 |
