Patents Assigned to SNF S.A.
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Patent number: 9994483Abstract: The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds.Type: GrantFiled: November 7, 2017Date of Patent: June 12, 2018Assignees: GCP Applied Technologies Inc., SNF S.A.S.Inventors: Lawrence L. Kuo, Cedrick Favero, Christophe Roux, Nathan A. Tregger
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Patent number: 9950953Abstract: The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds.Type: GrantFiled: May 11, 2012Date of Patent: April 24, 2018Assignees: GCP Applied Technologies Inc., SNF S.A.S.Inventors: Lawrence L. Kuo, Cedrick Favero, Christophe Roux, Nathan A. Tregger
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Publication number: 20150065614Abstract: The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds.Type: ApplicationFiled: May 11, 2012Publication date: March 5, 2015Applicants: SNF S.A.S., W R GRACE & CO.-CONN.Inventors: Lawrence L. Kuo, Cedrick Favero, Christophe Roux, Nathan A. Tregger
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Patent number: 8771633Abstract: A composition based on lime comprising at least one mineral agent consisting of slaked lime in the solid phase and of an organic polymer incorporated into said solid phase, a method for its making and the use for its application in the treatment of water and sludge, in particular for conditioning sludge before dewatering.Type: GrantFiled: June 29, 2010Date of Patent: July 8, 2014Assignees: S.A. Lhoist Recherche et Developpement, SNF S.A.S.Inventors: Laurent Biotteau, Gaetan Blandin
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Patent number: 8562838Abstract: Provided is a method for treating sludge from the mining or mineral industry, including before above-ground spreading, contacting the sludge with a flocculating agent that is a water-soluble, organic polymer having a molecular weight of from 5,000,000 to 25,000,000 g/mol and an anionicity of from 10 to 40 mol %, to produce contacted sludge, wherein the water-soluble organic polymer includes at least one anionic monomer having a carboxylic function or having a sulfonic acid function, at least one non-ionic monomer, and optionally one or more cationic monomers, where the flocculating agent is branched, and has from 0.02 to 2 mol % hydrophobic monomers.Type: GrantFiled: October 20, 2009Date of Patent: October 22, 2013Assignee: SNF S.A.S.Inventors: Frédéric Poncet, Nicolas Gaillard
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Patent number: 8007678Abstract: Temporary sizing agent for natural and/or artificial individualized textile fibers comprises a water-soluble homopolymer or copolymer of at least one acrylamide monomer having a molecular weight not less than one million, advantageously more than three millions.Type: GrantFiled: December 16, 2005Date of Patent: August 30, 2011Assignees: EMZ Trek, SNF S.A.S.Inventors: Milton Faria, Charles Cordier
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Patent number: 7931728Abstract: A fertilizer granule contains, as a binder, at least one organic polymer. The organic polymer is a hydrosoluble polymer that is at least partially cationic.Type: GrantFiled: July 20, 2005Date of Patent: April 26, 2011Assignee: SNF S.A.S.Inventors: Jacques Brosse, Stephane Delheur, Eric Philibert
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Publication number: 20100326614Abstract: A cationic copolymers of acrylamide obtained by the Hofmann rearrangement, using an alkali and/or alkaline earth hydroxide and an alkali and/or alkaline earth hypohalide, are provided. The copolymers can be used as strengthening agents for paper and/or coagulants. The copolymers have a desalination coefficient (Cd) higher than 0.6, higher than 0.65, or higher than 0.7.Type: ApplicationFiled: February 19, 2008Publication date: December 30, 2010Applicant: SNF S.A.S.Inventors: René Hund, Christian Jehn-Rendu
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Patent number: 7815771Abstract: A process for the manufacture of paper, board or similar products, comprises first of all, adding, to the paper pulp fibrous suspension, at least one main retention aid composed of a cationic (co)polymer. Then optionally the flocs obtained are sheared. Subsequently there is added to the suspension, separately or as a mixture, in any order: at least one secondary retention aid chosen from the group consisting of silica derivatives and anionic or amphoteric organic polymers, and at least one tertiary retention aid composed of a crosslinked anionic organic polymer with a size of greater than or equal to 1 micrometer and exhibiting an intrinsic viscosity of less than 3 dl/g.Type: GrantFiled: November 8, 2004Date of Patent: October 19, 2010Assignee: SNF S.A.S.Inventors: Gatien Faucher, Rene Hund, Christian Jehn-Rendu
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Publication number: 20100197529Abstract: Method for enhanced oil recovery consisting in introducing into the injection water a solution containing at least one polymer and at least one surfactant, the surfactant/polymer weight ratio being between 1 and 10 and the surfactant concentration in the solution being higher than 100 ppm (parts per million), characterized in that the said polymer contains at least one hydrophobic cationic monomer.Type: ApplicationFiled: September 10, 2008Publication date: August 5, 2010Applicant: SNF S.A.S.Inventors: Cedric Favero, Nicolas Gaillard
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Publication number: 20100105976Abstract: Provided is a method for treating sludge from the mining or mineral industry, including before above-ground spreading, contacting the sludge with a flocculating agent that is a water-soluble, organic polymer having a molecular weight of from 5,000,000 to 25,000,000 g/mol and an anionicity of from 10 to 40 mol %, to produce contacted sludge, wherein the water-soluble organic polymer includes at least one anionic monomer having a carboxylic function or having a sulfonic acid function, at least one non-ionic monomer, and optionally one or more cationic monomers, where the flocculating agent is branched, and has from 0.02 to 2 mol % hydrophobic monomers.Type: ApplicationFiled: October 20, 2009Publication date: April 29, 2010Applicant: SNF S.A.S.Inventors: Frédéric Poncet, Nicolas Gaillard
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Patent number: 7700702Abstract: High molecular weight associative amphoteric polymers for increasing the viscosity of aqueous solutions, comprise: at lease one cationic monomer derived from acrylamide bearing at least one hydrophobic chain of 8 to 30 carbon atoms; 1 to 99.9 mole % of at least one anionic monomer; and 1 to 99 mole % of one or several non-ionic water-soluble monomers. Aqueous solutions containing said polymers find uses in industry, in particular the oil, paper, water treatment, mining, cosmetics, textile, detergency industries and generally in all industrial techniques using thickened solutions.Type: GrantFiled: March 29, 2005Date of Patent: April 20, 2010Assignee: SNF S.A.S.Inventors: Nicolas Gaillard, Cédrick Favero
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Patent number: 7504445Abstract: A hydro-seeding composition having the form of an aqueous mixture comprising a polyacrylamide polymer and seeds. The polyacrylamide polymer is a potassium anionic polymer salt or an ammonium anionic polymer salt, instead of a sodium-based polyacrylamide polymer. The hydro-seeding composition may also include various soil amendments. The seeds are grass seeds or plant seeds.Type: GrantFiled: September 29, 2005Date of Patent: March 17, 2009Assignee: SNF S.A.S.Inventor: Cyril Collin
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Publication number: 20070245786Abstract: A fertilizer granule contains, as a binder, at least one organic polymer. The organic polymer is a hydrosoluble polymer that is at least partially cationic.Type: ApplicationFiled: July 20, 2005Publication date: October 25, 2007Applicant: SNF S.A.S.Inventors: Jacques Brosse, Stephane Delheur, Eric Philibert
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Publication number: 20070074315Abstract: A hydro-seeding composition having the form of an aqueous mixture comprising a polyacrylamide polymer and seeds. The polyacrylamide polymer is a potassium anionic polymer salt or an ammonium anionic polymer salt, instead of a sodium-based polyacrylamide polymer. The hydro-seeding composition may also include various soil amendments. The seeds are grass seeds or plant seeds.Type: ApplicationFiled: September 29, 2005Publication date: March 29, 2007Applicant: SNF S.A.SInventor: Cyril Collin
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Patent number: 6964745Abstract: The invention relates to use of superabsorbent (co)polymers (SAP) as an agent for preservation treatment of animal hides. The SAP is used preferably in conjunction with salt or other hygroscopic agent, in particular 50% NaCl/50% SAP by weight. Suitably treated hides are obtained in 24 hours and one-half less salt is used in comparison to the prior art, disadvantages such as surface brine, salt in slaughterhouse waste, and others being eliminated.Type: GrantFiled: March 6, 2000Date of Patent: November 15, 2005Assignee: SNF S.A.Inventors: Jacques Brosse, Bernard Sabatier
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Patent number: 6797785Abstract: The invention relates to a process of synthesis at low temperature of polymers of the PVA (polyvinylamine) type on the basis the monomer vinylformamide. The polymerization claimed for the invention begins at around 0° C., is initiated by an original combination of redox and azoic catalysts, and is conducted under more or less normal pressure. The polymerization is conducted in water and is followed by direct hydrolysis. A powdered cationic PVA of high molecular weight is thereby obtained. The process may also be conducted in an emulsion at an initiation temperature of around 15° C. Application of PVAs as flocculants and coagulants in the paper, water treatment, petroleum and parapetroleum, and, similar industries.Type: GrantFiled: December 31, 2001Date of Patent: September 28, 2004Assignee: SNF S.A.Inventors: René Hund, Christian Jehn-Rendu
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Patent number: 6579417Abstract: According to the present invention, a cross-linked polymer or copolymer formed by reverse phase emulsion polymerization from suitable water-soluble monomers or from mixtures of such monomers is used as a retention agent. The process according to the invention is characterized in that the cross-linked polymer is sheared before its introduction or injection into the suspension to be flocculated. This results in a distinct improvement in the retention, formation, drainage and other properties of the paper or paperboard sheet thus obtained, as a function of the shearing.Type: GrantFiled: March 9, 2001Date of Patent: June 17, 2003Assignee: SNF S.A.Inventors: Rene Hund, Christian Jehn-Rendu
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Patent number: 5925714Abstract: Improved water soluble vinyl addition polymers for use as thickening and flocculating agents in water purification treatment, paper manufacture and waste water treatment are prepared using alkoxylated castor oil as an activation release agent. The release agent is biodegradable thereby making the overall product process more environmentally friendly.Type: GrantFiled: March 4, 1994Date of Patent: July 20, 1999Assignee: SNF S.A.Inventors: Eric H. Larson, Manilal Dahanayake, William R. Busler