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| Number | Title | Issue Date |
| 7252783 | Treatment of suspensions A method of dewatering a suspension of solids in an aqueous medium, comprising introducing into the suspension a flocculating system, which flocculation system comprises, a) a substantially non-ionic water-soluble polymer and b) a cationic polymeric flocculant of in... | 08/07/2007 |
| 7141181 | Composition comprising amphoteric polymeric flocculants A composition is provided which comprises amphoteric polymers comprising, as constituent monomer units, a cationic monomer unit, an anionic monomer unit, and optionally a nonionic monomer unit and having a 0.5% salted viscosity of 10 to 120 mPa·s, wherein said amph... | 11/28/2006 |
| 6805803 | Process for flocculating suspensions A process of flocculating and dewatering an aqueous suspension of suspended solids comprising, introducing into the suspension, (a) a concentrated polymer solution and, (b) a dilute polymer solution, characterised in that the concentrated and dilute polymer solution... | 10/19/2004 |
| 6627719 | Cationic latex terpolymers for sludge dewatering A cationic latex terpolymer prepared by polymerizing from about 1 to about 99.1 mole percent of one or more cationic monomers, from about 0.9 to about 5 mole percent of one or more hydroxyalkyl (meth)acrylates and from 0 to about 98.1 mole percent of one ... | 09/30/2003 |
| 6623658 | Additive for controlling secondary contaminates An additive for controlling the detrimental effects of secondary recycled contaminants in the papermaking process. In the preferred embodiment, the additive includes a first low molecular weight, cationic water-soluble polymer and a second low molecular w... | 09/23/2003 |
| 6590031 | Pressure sensitive adhesives The present invention relates to pressure sensitive adhesives based on aqueous latex emulsions processes for their preparation and laminates the prepared there from. The pressure sensitive adhesives exhibit excellent adhesion in hot water environments and... | 07/08/2003 |
| 6511611 | Compositions for reducing true color in waste liquids Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color, The branched epichlorohy... | 01/28/2003 |
| 6485651 | Quick inverting liquid flocculant This invention is directed to methods for quickly inverting and dispersing a flocculant in an aqueous slurry to achieve settlement of solids and clarification of the slurry water. In particular, this invention relates to methods for quickly inverting a fl... | 11/26/2002 |
| 6454961 | Elixir for inducing high-speed settlement of precipitates An elixir to aid in the coagulation and flocculation of metal precipitates in wastewater, and to aid in their settling out of the wastewater solution, comprising: 1) a first cationic polyelectrolyte, 2) a solution comprising a second cationic polyelectrol... | 09/24/2002 |
| 6432321 | Elixir for inducing high-speed settlement of precipatates An elixir to aid in the coagulation and flocculation of metal precipitates in wastewater, and to aid in their settling out of the wastewater solution, comprising: 1) a first anionic polymer with a high molecular weight and a high charge density, 2) a seco... | 08/13/2002 |
| 6376561 | Dewatering of aqueous suspensions Belt pressing or other pressure dewatering of a high solids mineral suspension is facilitated by flocculating the suspension by mixing into the suspension anionic flocculant having IV at least 5 dl/g and a minor amount of a cationic flocculant which gener... | 04/23/2002 |
| 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 |
| 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 |
| 6190575 | Polymer electrolyte, a polymer aggregating agent prepared therefrom, and a disposal of waste water A polymer electrolyte which contains an inorganic pigment, having a sulfonated polystyrene resin as a principal ingredient, and is soluble to water.... | 02/20/2001 |
| 6126837 | Method for removing suspended particles using mannich-derived polyethers Methods for removing suspended particles from a solution are disclosed. These methods generally comprise adding to the solution to be treated an effective amount of a composition comprising a Mannich derivatized polyether. The polyether is generally descr... | 10/03/2000 |
| 6117938 | Polymer blends for dewatering The invention provides blends of high molecular weight, water-soluble cationic structured polymers with high molecular weight, water-soluble, cationic polymers which either are linear or which have a lower degree of structure. The blends are useful for de... | 09/12/2000 |
| 6086783 | Polymer electrolyte, a polymer aggregating agent prepared therefrom, and a disposal of waste water A polymer electrolyte which contains an inorganic pigment, having a sulfonated polystyrene resin as a principal ingredient, and is soluble to water.... | 07/11/2000 |
| 5962578 | Poly(dialkylaminoalkyl (meth)acrylamide)-based superabsorbent gels Poly(dialkylaminoalkyl (meth)acrylamide)-based superabsorbent gels are disclosed. The superabsorbent gels either comprise a mixture of a poly(dialkylaminoalkyl (meth) acrylamide) polymer and an acidic water-absorbing polymer, like polyacrylic acid, or com... | 10/05/1999 |
| 5914366 | Multimodal emulsions and processes for preparing multimodal emulsions Multimodal emulsions comprising a blend of at least one polymeric microemulsion provide for high solids and low bulk viscosity. Convenient and versitale processes for preparing multimodal emulsions are also provided. Mannich (alk)acrylamide polymeric micr... | 06/22/1999 |
| 5883181 | Multimodal emulsions and processes for preparing multimodal emulsions Multimodal emulsions comprising a blend of at least one polymeric microemulsion provide for high solids and low bulk viscosity. Convenient and versitale processes for preparing multimodal emulsions are also provided. Mannich (alk)acrylamide polymeric micr... | 03/16/1999 |
| 5879564 | High performance polymer flocculating agents Water-soluble, branched, high molecular weight, cationic polymer flocculants are disclosed, as well as methods of making the same and methods of dewatering suspended solids using the same.... | 03/09/1999 |
| 5863982 | Quaternized teriary aminomethyl acrylamide polymer microemulsions with improved performance Quaternized tertiary aminomethyl acrylamide polymer emulsions are treated by 1) adjusting the pH to about 3.6 to about 4.8, 2) adding a formaldehyde scavenger, 3) adjusting the water content of the aqueous phase to result in about 10-45 weight percent of ... | 01/26/1999 |
| 5763523 | Stable emulsion blends and methods for their use Stable compositions as flocculants comprising a blend of at least two inverse emulsions, at least one of which is a polymeric microemulsion, provide effective flocculating performance over time. Methods for preparing stable emulsion blends use stabilizing... | 06/09/1998 |
| 5763530 | Stable emulsion blends and methods for their use Stable compositions comprising a blend of at least two inverse emulsions, at least one of which is a polymeric microemulsion, provide effective flocculating performance over time. Methods for preparing stable emulsion blends use stabilizing amounts of ald... | 06/09/1998 |
| 5725780 | Method for using novel high solids polymer compositions as flocculation aids 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, p... | 03/10/1998 |
| 5717023 | Solid polymeric products and their use A flocculant, viscosifier or other water soluble or water swellable particulate polymer is formulated as a block having a dimension of at least 10 mm and which comprises a wax matrix in which the polymer particles are dispersed. The block can be made by b... | 02/10/1998 |
| 5709880 | Method of making tabletized ionene polymers Tabletized ionene polymers, methods for their preparation and their use in water treatment is described. The tablet contains about 5 to about 60 percent by weight of an ionene polymer, about 40 to about 95 percent by weight of a salt carrier matrix, 0 to ... | 01/20/1998 |
| 5670615 | Quaternized tertiary aminomethyl acrylamide polymer microemulsions with improved performance Quaternized tertiary aminomethyl acrylamide polymer emulsions are treated by 1) adjusting the pH to about 3.6 to about 4.8, 2) adding a formaldehyde scavenger, 3) adjusting the water content of the aqueous phase to result in about 10-45 weight percent of ... | 09/23/1997 |
| 5643461 | High performance dewatering aids Water-soluble, branched, high molecular weight, cationic polymers are used in combination with low molecular weight, cationic polymers to provide the highly improved dewatering of suspended solids. Water-in-oil emulsions containing these cationic polymers... | 07/01/1997 |
| 5635112 | Hydrophobically-modified demulsifiers for oil-in-water systems A method for breaking an oil-in-water emulsion which comprises the addition of a hydrophobically-modified polyelectrolyte copolymer comprising a diallyldimethylammonium chloride and a hydrophobically-associating monomer selected from the group consisting ... | 06/03/1997 |
| 5529699 | Water-soluble cationic copolymers and their use as flocculants A method of flocculating coagulated and/or finely divided suspended matter in aqueous systems comprising adding to the system from 0.005 to 1 weight percent based on the dry weight of the coagulated and/or finely suspended matter of at least one water sol... | 06/25/1996 |
| 5405554 | High performance dewatering aids Water-soluble, branched, high molecular weight, cationic polymers are used in combination with low molecular weight, cationic polymers to provide the highly improved dewatering of suspended solids. Water-in-oil emulsions containing these cationic polymers... | 04/11/1995 |
| 5340865 | Cross-linked cationic polyermic microparticles Novel compositions comprising cationic polymeric microparticles are disclosed, along with a method for their production. The products are useful in flocculating a wide variety of dispersions of suspended solids.... | 08/23/1994 |
| 5326854 | Flocculation process using lactam or vinyl sulfonate polymer A process capable of operation under hostile conditions for accelerating the sedimentation of suspended solids in an aqueous suspension using a flocculating agent comprising a water-soluble polymer composition produced from a monomer composition comprisin... | 07/05/1994 |
| 5283306 | Hydrophobic polyelectrolytes used in removing color A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises diallyldimethylammonium chloride and a hydrophobic monomer selected from the group consisting of quaternized dime... | 02/01/1994 |
| 5281340 | Cationic polymer flocculating agents Disclosed herein is a flocculating agent comprising a specified cationic polymer having an amidine structure. The cationic polymer flocculating agents according to the present invention have 20 to 90% by mole of a repeating amidine unit represented by the... | 01/25/1994 |
| 5219914 | Cospray washout resistant roof mastic A washout resistant roof mastic is disclosed in which an emulsion is applied and contacted with a second material that causes the emulsion to flocculate and set quickly. The emulsion can be applied for example through an applicator that simultaneously app... | 06/15/1993 |
| 5152903 | Cross-linked cationic polymeric microparticles Novel compositions comprising cationic polymeric microparticles are disclosed, along with a method for their production. The products are useful in flocculating a wide variety of dispersions of suspended solids.... | 10/06/1992 |
| 5132023 | Emulsified mannich acrylamide polymers Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.... | 07/21/1992 |
| 5100951 | Stable blends of cationic water-in-oil emulsion polymers and cationic aqueous solution polymers Novel, stable blends of cationic water-in-oil emulsion polymers with cationic polymers in aqueous solution are preparable through the use of stabilizing solvents and surfactants.... | 03/31/1992 |
