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| Number | Title | Issue Date |
| 6605674 | Structurally-modified polymer flocculants This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural ... | 08/12/2003 |
| 6592718 | Method of improving retention and drainage in a papermaking process using a diallyl-N,N-disubstituted ammonium halide-acrylamide copolymer and a structurally modified cationic polymer A method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a diallyl-N,N-disubstituted ammonium halide/acrylamide copolymer and an effective amount of a cationic structurally-modified wat... | 07/15/2003 |
| 6572789 | Corrosion inhibitors for aqueous systems A method of inhibiting corrosion in aqueous systems comprising adding to the system a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts and a method of preparing a composition comprising mono, bis and oligomeric phosphinosucci... | 06/03/2003 |
| 6569413 | Hair fixative composition containing an anionic polymer A cosmetically acceptable hair fixative composition comprising from about 0.1 to about 10 weight percent, based on polymer solids, of an anionic polymer, wherein the anionic polymer is composed of from about 10 to about 80 mole percent of 2-acrylamido-2-m... | 05/27/2003 |
| 6569983 | Method and composition for recovering hydrocarbon fluids from a subterranean reservoir A water-soluble branched polyhydroxyetheramine, wherein the branched polyhydroxyetheramine is prepared by reacting an amine having two reactive hydrogen atoms with a diepoxide to form a polyhydroxyetheramine and then reacting the polyhydroxyetheramine wit... | 05/27/2003 |
| 6562194 | Method of creping paper webs A non-oil-based release aid used in a creping process for releasing a paper web from a Yankee dryer in the manufacture of a paper product having a formula for its block version as follows: R--(OC3 H6)y (OC2 H4 | 05/13/2003 |
| 6562875 | Aqueous defoamer composition An aqueous emulsion containing from about 0.1 to about 70 weight percent of a mixture of a) one or more alkoxylated alcohols of formula RO(C2 H4 O)x (C3 H6 O)y Z wherein R is straight or branched C | 05/13/2003 |
| 6527959 | Method of clarifying bayer process liquors using salicylic acid containing polymers A method of flocculating suspended solids in a Bayer process liquor comprising adding to the liquor an effective amount of a polymer comprising salicylic acid groups.... | 03/04/2003 |
| 6524435 | Method and composition for dispersing hydrophobic particles in aqueous suspensions A method of dispersing hydrophobic particles in aqueous suspensions comprising adding to the suspension an effective amount of an ethylene oxide-propylene oxide block copolymer, wherein the copolymer has a molecular weight of from about 1,000 to about 50,... | 02/25/2003 |
| 6508886 | Method for preparing a purified sugary juice from raw juices obtained from sacchariferous material of vegetable origin An embodiment of the present invention described and shown in the specification is a method for the preparation of a purified sugary juice from raw juices obtained from sacchariferous material of vegetable origin. The embodiment of the method that is disc... | 01/21/2003 |
| 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 |
| 6454003 | Composition and method for recovering hydrocarbon fluids from a subterranean reservoir This invention is directed to a composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of from about 9,000... | 09/24/2002 |
| 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 |
| 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 |
| 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 |
| 6414080 | Inverse emulsion polymer and production thereof Disclosed herein is an inverse emulsion polymer composition comprising a copolymer or copolymer salt of N,N,-dimethylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid or acid salts thereof, having a Brookfield viscosity of less than 20,000 Cps at ... | 07/02/2002 |
| 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 |
| 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 |
| 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 |
| 6361801 | Alkyl allyl amines and low voc hair styling compositions using same The present invention is directed to alkyl allyl amine monomers and their use as a polymerizate in a low VOC hair spray formulation. The hair spray formulation preferably includes a polymerizate of an alkyl allyl amine monomer, preferably an alkyl diallyl... | 03/26/2002 |
| 6337426 | Antifoulant compositions and processes Industrial plant streams and processes that contain reactive light olefins such as isoprene and butadiene are plagued with fouling problems due to premature polymerization resulting in significant economic loss. A combination of phenylenediamines with nit... | 01/08/2002 |
| 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 |
| 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 |
| 6294093 | Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions Demulsification of a water-in-oil, especially a water-in-crude oil, emulsion is effected by contacting it with an aqueous composition having at least one oil-soluble demulsifier and at least one water-soluble surfactant. These aqueous formulations are adv... | 09/25/2001 |
| 6280631 | Use of polymers containing vinylamine/vinylformamide for the treatment of food processing wastewater The present invention provides a method for conditioning food processing waste prior to mechanical dewatering with the use of environmentally friendly coagulants and flocculants. The method of the present invention comprises treating these waste waters wi... | 08/28/2001 |
| 6265477 | Aqueous dispersion of a particulate high molecular weight anionic or nonionic polymer An aqueous dispersion of a particulate high molecular weight water soluble anionic or nonionic polymer is prepared by polymerizing 0-7 mole percent of at least one anionic monomer and 100-93 mole percent of at least one non-ionic monomer under free radica... | 07/24/2001 |
| 6258279 | Hydrophilic cationic dispersion polymer for paper mill color removal This invention is directed to a method of removing color bodies from paper mill waste water comprising adding to the water an effective color-removing amount of a hydrophilic cationic dispersion polymer prepared by polymerizing i. a cationic diallyl-N,N-d... | 07/10/2001 |
| 6217778 | Anionic and nonionic dispersion polymers for clarification and dewatering This invention is directed to a method of clarifying and dewatering industrial waste water using anionic and nonionic dispersion polymers.... | 04/17/2001 |
| 6210585 | Fatty acid free latex polymer flocculants A method of separating solids and preventing foaming in an industrial water system comprising adding to fluids in the industrial water system an effective amount of a low foaming latex polymer prepared using a tallow amine ethoxylate/polyoxyethylene oleyl... | 04/03/2001 |
| 6184336 | Biodegradable poly(amino acid)s, derivatized amino acid polymers and methods for making same New and improved polyamino acid polymers and derivatized polyamino acid polymers are provided. Relatively high molecular weight poly(succinimides) are prepared by solid phase polymerization of aspartic acid or glutamic acid in the presence of a super phos... | 02/06/2001 |
| 6177017 | Polymers for chemical treatment and precipitation of soluble metal cyanide and oxoanion compounds from waste water A method for the removal of metal cyanides or oxoanions from aqueous streams such as waste water streams with compounds containing 1,4-diazabicyclo[2.2.2]octane. Preferred compounds are polymers formed by free radical polymerization of N-4-vinyl benzyl-N | 01/23/2001 |
| 6174843 | Composition and method for lubricant wax dispersant and pour point improver This invention provides a composition and a method of using the composition for dispersing wax and improving the pour point of lubricating oils. The composition comprises an esterified styrene-maleic anhydride copolymer and an esterified alpha-olefin male... | 01/16/2001 |
| 6171505 | Higher actives dispersion polymer to aid clarification, dewatering, and retention and drainage The invention is a method for clarifying, dewatering or improving retention and drainage of industrial waste water or paper furnish with an effective amount of at least one dispersion of a water soluble cationic polymer flocculant wherein the improvement ... | 01/09/2001 |
| 6171521 | Zwitterionic water-soluble substituted imine corrosion inhibitors This invention is directed to a zwitterionic water-soluble imine of formula: ##STR1## wherein R1 is heterocyclyl, heteroaryl, aryl, arylalkyl, cycloalkyl or lower alkyl; R2 is alkyl, alkenyl, aminoalkyl, diaminoalkyl, hydroxyalk... | 01/09/2001 |
| 6147034 | Gelling agent for hydrocarbon liquid and method of use This invention is directed to a gelling agent composition comprising the reaction product of a high molecular weight gelling agent additive, a low molecular weight phosphate diester acid, and a Group II or Group III metal salt, to methods of preparing the... | 11/14/2000 |
| 6133368 | Seed process for salt dispersion polymer A dispersant system useful in the formation of dispersions of water soluble polymers is disclosed. The dispersant system comprises two polymers, the first being a copolymer of diallyldimethyl ammonium chloride with a C6 to C20 quater... | 10/17/2000 |
| 6133363 | Process for producing dispersions of water-soluble vinyl polymers and stabilizer for implementing the process The invention relates to a method of manufacturing dispersions of water-sble cationic vinyl polymers which can be used as process aids for separation processes, e.g. as flocculation aids, coagulation agents, retention agents or dehydration accelerators. ... | 10/17/2000 |
| 6124396 | Branched water-soluble acrylamide copolymers of high molecular weight and process for manufacturing them This invention concerns comb-like branched, water-soluble cationic acrylamide copolymers, prepared from 1-40 mole % of a water-soluble cationic prepolymer backbone of formula I --[A--B--NR]n -- I where A is an un... | 09/26/2000 |
