The Agent Contains Organic Compound Containing Silicon (e.g., Siloxane Hydrophobized Silica) Patents (Class 516/117)
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Patent number: 10954130Abstract: A method for producing an additive for reclaiming oil from a fluid product stream and a treated silica with controlled hydrophobicity are disclosed. The method includes the steps of providing silica or silicate with a particle size of between 3.0 ?m to 20 ?m, the silica or silicates having an agglomerate size of between 10 ?m to 100 ?m and being chosen to achieve the desired particle-size range and with a controlled level of hydrophobicity; treating the silica or silicate with a silicone or silane to make it hydrophobic; and controlling the hydrophobicity of the silica or silicate by varying the temperature and treatment time of the silica or silicate, amount of a treating material used to treat the silica or silicate, and the molecular weight of the treating material. The additive improves oil extraction and concentration from a fluid product stream.Type: GrantFiled: May 5, 2020Date of Patent: March 23, 2021Assignee: Applied Material Solutions, Inc.Inventors: Michael T. Jennings, Robert Wilson
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Patent number: 10870071Abstract: Defoamer compositions containing a plurality of defined organopolysiloxanes exhibit very short initial foam collapse and yet exhibit long lasting defoaming activity when added to aqueous media prone to foaming.Type: GrantFiled: June 6, 2017Date of Patent: December 22, 2020Assignee: WACKER CHEMIE AGInventors: Christof Brehm, Willibald Burger, Wolfgang Ziche
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Patent number: 10252189Abstract: An object of the present invention is to provide an oil-in-water emulsion defoaming agent that is superior in defoaming properties (initial defoaming property and defoaming durability) and stability (emulsion stability). The present invention provides an oil-in-water emulsion defoaming agent including hydrophilic fumed silica (C), wherein an oil phase (A) is emulsified and dispersed in a water phase (B). Preferably, the content of the oil phase (A) is 10 to 50% by weight, the content of the hydrophilic fumed silica (C) is 0.1 to 6% by weight, and the content of the water phase (B) is 44 to 89.9% by weight based on the weight of the oil phase (A), the hydrophilic fumed silica (C), and the water phase (B). The weight ratio (A/C) of the oil phase (A) to the hydrophilic fumed silica (C) is preferably from 2 to 100.Type: GrantFiled: September 11, 2012Date of Patent: April 9, 2019Assignee: SAN NOPCO LTD.Inventors: Yohei Matsumura, Nobuo Hisada, Yoshihide Izumi
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Patent number: 10150786Abstract: System, including methods and compositions, for making and using emulsions that include a silicone oil and a silicone surfactant. The emulsions may include aqueous droplets disposed in a continuous phase that includes a silicone oil and a silicone surfactant. The aqueous droplets may contain an analyte, optionally at partial occupancy, and/or a luminescent (e.g., photoluminescent) reporter. An assay of the analyte may be performed with the droplets. In some cases, signals may be detected from the droplets, and a characteristic of the analyte, such as an analyte level or activity, may be determined based on the signals.Type: GrantFiled: September 6, 2017Date of Patent: December 11, 2018Assignee: Bio-Rad Laboratories, Inc.Inventors: Erin R. Chia, Amy L. Hiddessen, Benjamin J. Hindson, Adam Lowe, Chunxiao Han
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Patent number: 9999846Abstract: Disclosed herein are methods of defoaming industrial process streams, the methods comprising adding to the industrial process stream an emulsion stabilized by Janus particles, wherein the Janus particles comprise at least one hydrophobic surface and at least one hydrophilic surface, and wherein the emulsion comprises silicone emulsion droplets in a continuous aqueous phase. Also disclosed herein are defoamer compositions comprising Janus particles and methods of making such compositions.Type: GrantFiled: December 18, 2015Date of Patent: June 19, 2018Inventors: Carter Kirwan, Rebecca Hamm
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Patent number: 9968866Abstract: Efficient defoamer and foam prevention formulations contain an organopolysiloxane defoamer and an efficiency promoting waxy ?-ketocarbonyl-functional organosilicon compound. The compositions also preferably contain a filler and a silicone resin, and are highly efficient in surfactant-containing aqueous systems such as detergents and cleaners.Type: GrantFiled: June 6, 2014Date of Patent: May 15, 2018Assignee: WACKER CHEMIE AGInventors: Christof Brehm, Elisabeth Hoelzlwimmer
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Patent number: 9914849Abstract: Highly durable hydrophobic and/or oleophobic coatings and methods and compositions for their production are described herein. Also described herein is a plunger having a hydrophobic surface prepared using the coating compositions described herein.Type: GrantFiled: September 14, 2012Date of Patent: March 13, 2018Assignee: Ross Technology CorporationInventors: Douglas Bleecher, Philip Harsh, Michael Hurley, Andrew K. Jones, Boon Chan Lor, Vinod K. Sikka
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Patent number: 9758535Abstract: System, including methods and compositions, for making and using emulsions that include a silicone oil and a silicone surfactant. The emulsions may include aqueous droplets disposed in a continuous phase that includes a silicone oil and a silicone surfactant. The aqueous droplets may contain an analyte, optionally at partial occupancy, and/or a luminescent (e.g., photoluminescent) reporter. An assay of the analyte may be performed with the droplets. In some cases, signals may be detected from the droplets, and a characteristic of the analyte, such as an analyte level or activity, may be determined based on the signals.Type: GrantFiled: March 17, 2014Date of Patent: September 12, 2017Assignee: Bio-Rad Laboratories, Inc.Inventors: Erin R. Chia, Amy L. Hiddessen, Benjamin J. Hindson, Adam Lowe, Chunxiao Han
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Patent number: 9655951Abstract: The present invention is the storage of biologically active natural ingredients in carbonated water. In a specific embodiment, the present invention is the storage in carbonated water of animal tissue containing type II collagen. Such type II collagen is useful for alleviating the symptoms of arthritis in mammals as well as the treatment of arthritis in mammals. Such type II collagen is also useful for the prevention of arthritis in mammals. The present invention is also a method for the preparation of a nutritional supplement that includes the steps of: (a) separating animal tissue containing water-insoluble, undenatured type II collagen from animal tissue not containing type II collagen; (b) subdividing and sterilizing said tissue under conditions which do not change the original structure of the type II collagen to produce a subdivided and sterilized product; (c) packaging the subdivided and sterilized product in carbonated water.Type: GrantFiled: March 14, 2014Date of Patent: May 23, 2017Inventor: Eugene R. Moore
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Patent number: 9404068Abstract: The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.Type: GrantFiled: February 26, 2015Date of Patent: August 2, 2016Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takato Sakurai, Hiroyuki Moriya, Akihiro Kobayashi, Rajan Keshav Panandiker, Bernard William Kluesener, Rebecca Ann Langevin, Sherri Lynn Randall
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Patent number: 9376648Abstract: A foam manipulation stabilizing composition for use in consumer products includes a plurality of surface-modified particles in combination with at least one surfactant. The particles have an average particle size greater than 100 nm up to about 50 ?m and a hydrophobicity measured by a contact angle between about 20° to 140°. The ratio of particles-to-surfactant may be between about 1:20 to about 20:1. The surface modification may include grafting pH or temperature switching functional groups to the particles or to a composition, such as a polymer, coated on the particle. A method for reducing the level of foam in a rinse solution is also described.Type: GrantFiled: April 7, 2008Date of Patent: June 28, 2016Assignee: The Procter & Gamble CompanyInventors: Vladimir Gartstein, Faiz F. Sherman, Hiroshi Oh, Robert Lupitskyy, Mikhail Motornov, Sergiy Minko
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Patent number: 9259671Abstract: The present disclosure relates to a defoaming substance for defoaming an aqueous solution. The defoaming substance includes a defoaming agent and a carrier material intermixed with the defoaming agent to form a solid mass, the carrier material being at least minimally soluble in the aqueous solution. In one embodiment, the carrier material includes at least one type of organic acid. The defoaming agent may include at least one type of silicon-based defoamer. The present disclosure also relates to a method for making a defoaming substance. The method may include selecting a defoaming agent capable of hindering foam formation and reducing foam build-up in an aqueous solution, selecting a carrier material that is at least minimally soluble in the aqueous solution, combining the defoaming agent with the carrier material, and forming the combined defoaming agent and carrier material into a solid defoaming substance.Type: GrantFiled: December 20, 2012Date of Patent: February 16, 2016Assignee: Harris Research, Inc.Inventors: Edward E. Durrant, Dale S. Jensen, Roger C. Andersen
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Patent number: 9150886Abstract: The method of producing bioethanol by sugarcane fermentation is improved by using a polyalkylene glycol with a hydroxyl functionality of greater than 2 as a foam controlling agent.Type: GrantFiled: March 7, 2012Date of Patent: October 6, 2015Assignee: Dow Brasil Sudeste Industrial Ltda.Inventors: Abel Oliveira, Yuri Alencar Marques
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Patent number: 9089159Abstract: Addition of a polyoxyethylene sorbitan fatty acid ester or of a polyethylene glycol fatty acid ester to an acidulated carbonated beverage alleviates problems of excessive and/or persistent foaming or rapid loss of carbon dioxide.Type: GrantFiled: September 21, 2011Date of Patent: July 28, 2015Assignee: THOS. BENTLEY & SON LIMITEDInventor: Roy Kenneth Taylor
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Publication number: 20150141534Abstract: The present invention provides a method for producing a solid defoaming/antifoaming agent comprising the following steps: providing an alkaline solution; adding an oil to the above alkaline solution to produce a saponification reaction; adding a liquid antifoaming agent; and putting aside the mixture containing the above alkaline solution, the oil and the liquid antifoaming agent to form the solid antifoaming agent. The ingredients of the solid antifoaming agent according to the present invention include 5˜40 weight percent vegetable oil, a 20˜40 weight percent sodium hydroxide solution and a 30˜60 weight percent liquid antifoaming agent.Type: ApplicationFiled: January 30, 2015Publication date: May 21, 2015Inventors: Shao-Hai Fang, Hey-Uan Wei
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Publication number: 20140336284Abstract: Disclosed is a powder antifoaming agent containing: (A) a hydrophobic organopolysiloxane that has a viscosity at 25° C. of 10-100,000 mm2/s; (B) a fine silica powder; (C) a surfactant; and (D) a water-soluble encapsulating agent that is in a solid state at 25° C. This powder antifoaming agent is characterized by being obtained by spray drying a dispersion liquid that is obtained by dispersing a silicone oil compound, which is obtained by mixing the component (A) and the component (B), and the component (D) in water in the presence of the component (C), and is also characterized in that the silicone oil compound is encapsulated by the component (D) that serves as an outer shell. Since the present powder antifoaming agent does not contain water by being produced by a spray drying method, the powder antifoaming agent is free from problems of emulsion antifoaming agents such as separation and putrefaction.Type: ApplicationFiled: October 18, 2012Publication date: November 13, 2014Inventors: Takato Sakurai, Shinji Irifune
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Publication number: 20140316015Abstract: Effective and long lasting defoamer compositions are prepared by admixing an organopolysiloxanes, a hydrophilic silica, a hydrophobic silica, optionally an organopolysiloxanes resin, and optionally a water insoluble inorganic compound, at a temperature of 50° C. to 250° C. until the viscosity of the composition has decreased to at least half its original viscosity prior to heating.Type: ApplicationFiled: December 17, 2012Publication date: October 23, 2014Inventors: Willibald Burger, Holger Rautschek, Josef Wimmer
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Patent number: 8617353Abstract: The present invention provides a process for deinking printed waste paper comprising the steps of: a) converting the printed waste paper to an aqueous pulp slurry in a pulper, where ink is detached from paper pulp; b) subjecting the pulp slurry to flotation in order to remove hydrophobic contaminants including ink from the pulp slurry, said flotation being carried out in the presence of a deinking chemical additive comprising modified silica obtained by treating hydrophilic silica particles with a hydrophobic organic liquid or modified metal silicate obtained by treating hydrophilic metal silicate particles with a hydrophobic organic liquid or a mixture of such modified silica and modified metal silicate. The present invention increases the yield of the flotation step without affecting the brightness of the flotation accept.Type: GrantFiled: June 17, 2009Date of Patent: December 31, 2013Assignee: Kemira OyjInventors: Jean-Francois D'Allest, Tiina Sarja, Scott Rosencrance
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Patent number: 8614256Abstract: A hydrophobic precipitated silica having a BET of less than 110 m2/g, a CTAB of less than 150 m2/g, a BET/CTAB ratio of less than 3, a carbon content of greater than 3.1%, a pH of 9.7 to 10.5, a DBP of less than 230 g/(100 g), and a methanol wettability of more than 50%. The hydrophobic precipitated silica is used in compositions including defoamers, silicone rubber and HTV crosslinkable silicone rubber compositions. The hydrophobic precipitated silica is also useful as a flow assistant and carrier or anti-blocking agent.Type: GrantFiled: February 1, 2011Date of Patent: December 24, 2013Assignee: Evonik Degussa GmbHInventors: Christian Panz, Rene Allerdisse, Helga Obladen, Mario Loebbus, Anja Lukas, Roland Bergmann, Karl Meier
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Patent number: 8530401Abstract: Superior defoamer compositions contain a low viscosity linear organopolysiloxane, a higher viscosity, optionally branched organopolysiloxane, a polyethersiloxane with a low cloud point, and both colloidal silica and fumed silica.Type: GrantFiled: April 4, 2011Date of Patent: September 10, 2013Assignee: Wacker Chemie AGInventors: Richard Becker, Willibald Burger, Holger Rautschek
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Patent number: 8426478Abstract: Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m2/g, has on the surface of the particles O—Si—(CnH2n+1)3 groups, where n is 1 to 3 and where the (CnH2n+1) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.Type: GrantFiled: November 24, 2008Date of Patent: April 23, 2013Assignee: Evonik Degussa GmbHInventors: Lara Dabrowski, Frank Menzel, Horst-Werner Wollenweber
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Patent number: 8053480Abstract: A process for making a foam control composition comprising a cross-linked polyorganosiloxane in which is dispersed a filler, with hydrophobic surface, comprising step (A) mixing (i) a finely divided filler, (ii) a polyorganosiloxane having on at least two reactive substituents, for example on average two reactive substituents, and (iii) a polyorganosiloxane having at least three reactive substituents, capable of addition reaction via hydrosilylation; (B) hydrosilylation reaction of components (ii) and (iii) until the mixture at least partially gels, followed by applying shearing forces to this at least partially gelled mixture. Optionally step (A) comprises a diluent or solvent and after step (B) an emulsification step is carried out to make the foam control composition into an O/W emulsion.Type: GrantFiled: May 17, 2007Date of Patent: November 8, 2011Assignee: Dow Corning CorporationInventors: Alain Hilberer, Emilie Navet, Laurent Vermeire
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Patent number: 8048846Abstract: The present invention provides a protein-silane and/or protein-siloxane copolymer obtainable by reacting a protein and a silane compound, the relative amounts of the protein and the silane compound being such that in the range of from 0.1 to 0.4 silane molecule is present for each reactive amino group of the protein. The copolymer is suitable for use in hair treatment compositions and is useful in reducing damage to hair caused by flexure and/or abrasion thereof.Type: GrantFiled: March 14, 2003Date of Patent: November 1, 2011Assignee: Croda International PLCInventors: Surinder Pall Chahal, Alun Robert Barnes, Nicholas Ian Challoner
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Patent number: 7964032Abstract: The present invention relates to coating and printing ink compositions possessing silicone surfactants compositions comprising fluorine-free organomodified trisiloxanes which are resistant to hydrolysis between a pH of about 3 to a pH of about 12. The coatings and printing ink composition of the present invention exhibit enhanced wetting, flow and leveling properties.Type: GrantFiled: October 17, 2006Date of Patent: June 21, 2011Assignee: Momentive Performance Materials Inc.Inventors: Suresh K. Rajaraman, Alain Lejeune, Alexander Borovik, George A. Policello, Mark D. Leatherman, Wenqing Peng, Zijun Xia
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Patent number: 7893115Abstract: An oil-in-water emulsion useful as a defoamer for pulp and paper mill applications is described. The defoamer has an oil blend (of a triglyceride oil or a mixture of triglyceride oils and silicone), a stabilizing agent (to make the oil blend stable in the emulsion), hydrophobic silica particles, surfactants, dispersants, and other components. The emulsion is usable directly at low concentrations to control foam.Type: GrantFiled: December 8, 2005Date of Patent: February 22, 2011Assignee: Hercules IncorporatedInventors: Huai N. Cheng, Eric O. Fernandez, John M. Sheepy
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Patent number: 7879917Abstract: A defoamer made from a composition that has at least one triglyceride oil or triglyceride oil mixture, at least one silicone, at least one silicone-triglyceride stabilizing agent, hydrophobic silica particles, optionally one or more surfactants and/or dispersants, and optionally one or more thickeners, and optionally one or more biocides. The defoamers described herein have utility in controlling foam in industrial applications. Typically, the defoamer can be used to control foam in pulp and paper applications.Type: GrantFiled: December 8, 2005Date of Patent: February 1, 2011Assignee: Hercules IncorporatedInventors: Huai N. Cheng, Eric Oswaldo Fernandez, John M. Sheepy
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Publication number: 20110003921Abstract: Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m2/g, has on the surface of the particles O—Si—(CnH2n+1)3 groups, where n is 1 to 3 and where the (CnH2n+1) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.Type: ApplicationFiled: November 24, 2008Publication date: January 6, 2011Applicant: EVONIK DEGUSSA GmbHInventors: Lara Dabrowski, Frank Menzel, Horst-Werner Wollenweber
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Patent number: 7776929Abstract: Defoamer compositions which exhibit both high defoaming activity as well as good storage stability are prepared by mixing at least an organopolysiloxane having a defined but limited fraction of silicon-bonded hydroxyl and/or alkoxy groups and hydrophilic silica, followed by heating until the viscosity of the mixture has fallen to less than 50% of its value prior to heating.Type: GrantFiled: February 9, 2006Date of Patent: August 17, 2010Assignee: Wacker Chemie AGInventors: Otto Schneider, Willibald Burger, Holger Rautschek
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Patent number: 7645360Abstract: Defoamer compositions of high effectiveness containing at least one siloxane-based antifoam and polysiloxane copolymers obtained by coupling a polysiloxane bearing active-hydrogen-containing hydrophilic polymer moieties by means of a di- or polyisocyanate.Type: GrantFiled: May 24, 2006Date of Patent: January 12, 2010Assignee: Wacker Chemie AGInventors: Willibald Burger, Christian Herzig, Josef Wimmer
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Patent number: 7619043Abstract: Defoaming compositions employing organopolysiloxanes bearing aryl radicals exhibit surprising efficiency relative to their alkyl counterparts.Type: GrantFiled: August 4, 2005Date of Patent: November 17, 2009Assignee: Wacker Chemie AGInventors: Holger Rautschek, Richard Becker, Willibald Burger
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Patent number: 7407991Abstract: A foam control composition comprises a polydiorganosiloxane fluid comprising units of the formula where each group R, which may be the same or different, is selected from an alkyl group having 1 to 36 carbon atoms or an aryl group or aralkyl group having up to 36 carbon atoms, the mean number of carbon atoms in the groups R being at least 1.3, and an additive composition having a melting point of at least 35° C. comprising 5-50 parts by weight of a non-polar component (A) and 50-95 parts by weight of a component (B) which is miscible with component (A) and is more polar than component (A), at least one of (A) and (B) being miscible with the polysiloxane fluid.Type: GrantFiled: August 1, 2003Date of Patent: August 5, 2008Assignee: Dow Corning CorporationInventors: Serge Creutz, Guzman Nachon, Houria Seghir, Bertrand Michel, Virginie Caprasse, Louise Batchelor
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Publication number: 20080119573Abstract: The present invention provides a method for producing a solid defoaming/antifoaming agent comprising the following steps: providing an alkaline solution; adding an oil to the above alkaline solution to produce a saponification reaction; adding a liquid antifoaming agent; and putting aside the mixture containing the above alkaline solution, the oil and the liquid antifoaming agent to form the solid antifoaming agent. The ingredients of the solid antifoaming agent according to the present invention include 5˜40 weight percent vegetable oil, a 20˜40 weight percent sodium hydroxide solution and a 30˜60 weight percent liquid antifoaming agent.Type: ApplicationFiled: August 21, 2007Publication date: May 22, 2008Applicant: AU OPTRONICS CORPORATIONInventors: Shao-Hai Fang, Hey-Uan Wei
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Patent number: 6949499Abstract: A composition for use as an anti-foam in laundry detergent wherein the anti-foam active ingredient is released slowly throughout the wash and rinse cycle.Type: GrantFiled: January 18, 2001Date of Patent: September 27, 2005Assignee: General Electric CompanyInventors: Kuo-Tsai G. Lai, Christine J. Phillips, Brenda S. Wutzer
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Patent number: 6899951Abstract: The present invention provides a hydrophobic precipitated silica having the following properties: carbon content 1.0-8.0% methanol wettability ?20-55% reflectance >94% BET/CTAB ratio ??1 DBP absorption <250 g/100 g BET surface area ?50-110 m2/g CTAB surface area 100-150 m2/g Sears number <13. The present invention also provides methods for making and using the hydrophobic precipitated silica and articles and compositions which include the same.Type: GrantFiled: August 5, 2002Date of Patent: May 31, 2005Assignee: Degussa AGInventors: Christian Panz, Ralf Schmoll, Michael Kempf, Mario Scholz
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Publication number: 20040028917Abstract: A composite cured product body is provided, which includes a first cured product part formed from a condensation reaction curable silicone rubber, and a second cured product part adhering to a surface of said first cured part formed from an addition reaction curable organopolysiloxane composition.Type: ApplicationFiled: August 7, 2003Publication date: February 12, 2004Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Syuichi Azechi
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Patent number: 6656975Abstract: A silicone composition having a continuous phase of a polar organic liquid including particles of a silicone active material encapsulated within an organic encapsulating material which is a solid at 25° C. The silicone active material is sparingly soluble in the polar organic liquid at 25° C., but is substantially dissolved in the polar organic liquid at temperatures of from 40 to 100° C. The three phase contact angle between the organic encapsulating material, the silicone antifoam, and the polar organic liquid is below 130° C., with the angle measured through the silicone.Type: GrantFiled: May 21, 2002Date of Patent: December 2, 2003Assignee: Dow Corning CorporationInventors: Steven Patrick Christiano, Kenneth Christopher Fey
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Patent number: 6610752Abstract: Defoamer granules containing support materials and silicones for solid laundry detergent, dishwashing detergent and cleaning compositions, obtainable by applying silicones in the form of aqueous emulsions to an added intermediate product of support materials and simultaneously drying and granulating the products in a fluidized bed, with the proviso that at least 85% by weight of the particles have a mean diameter below 1.5 mm, are described.Type: GrantFiled: October 10, 2000Date of Patent: August 26, 2003Assignee: Cognis Deutschland GmbHInventors: Karl Heinz Schmid, Michael Neuss, Detlef Stanislowski, Karin Koren, Andrea Borntraeger
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Publication number: 20030072776Abstract: A foam control agent for emulsifiable concentrates and its use therein is disclosed wherein the agent comprises a soluble organosilicone of the formula:Type: ApplicationFiled: July 13, 2001Publication date: April 17, 2003Inventors: Jinxia Sun, Charles Scott, Robert E. Ruckle, George A. Policello
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Patent number: 6512015Abstract: This invention relates to silicone foam control compositions comprising a silicone antifoam agent, mineral oil, a polydiorganosiloxane containing at least one polyoxyalkylene group, and a finely divided filler. The foam control compositions of this invention can be advantageously utilized to control foam in foam producing systems, provide improvement in the control of foaming behavior, and are stable and easily dispersible.Type: GrantFiled: June 30, 2000Date of Patent: January 28, 2003Assignee: Dow Corning CorporationInventors: Russell Allen Elms, Margaret Ann Servinski
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Patent number: 6448298Abstract: Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.Type: GrantFiled: May 15, 2000Date of Patent: September 10, 2002Assignee: BetzDearborn, Inc.Inventors: Raimundo Romualdo, Claudio Cândido Luiz, Luiz Antonio Fernandes
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Patent number: 6417258Abstract: An antifoaming composition contains (A) 58 to 90% by weight of an oil compound and (B) 10 to 42% by weight of a mixture. The oil compound (A) consisting essentially of (i) 80 to 99.9% by weight of an organopolysiloxane composed of R13SiO1/2, R12SiO2/2 and R1SiO3/2 units in a ratio of (0.1 to 5):(90 to 99.8):(0.1 to 5) by mol % and (ii) 0.1 to 20% by weight of finely divided silica. The mixture (B) consisting essentially of (iii) 30 to 90% by weight of a polyoxyalkylene-modified silicone oil having a viscosity of 120,000 to 1,000,000 centipoise at 25° C. and (iv) 1 to 70% by weight of a polyhydric alcohol alkyl ether having a molecular weight of 50 to 300. The composition has improved antifoaming properties, water dispersibility and stability.Type: GrantFiled: February 29, 2000Date of Patent: July 9, 2002Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshitaka Aoki, Akinari Itagaki
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Publication number: 20020001558Abstract: A composition, a process for producing the composition, and a process for producing a nitrile are disclosed. The composition is substantially anhydrous or free of water and comprises ammonia and an anti-foaming agent. The composition can be produced by contacting substantially anhydrous ammonia with an anti-foaming amount of an anti-foaming agent. The process for producing a nitrile comprises contacting a hydrocarbon with the composition disclosed herein.Type: ApplicationFiled: May 15, 2001Publication date: January 3, 2002Inventors: Timothy Park Stauffer, Gregory Park Shankwitz
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Patent number: 6303663Abstract: Silica is rendered hydrophobic by a catalyst-free, in-situ process that includes contact with a hydrophobing agent under vacuum at elevated temperature for a time sufficient to replace adsorbed water in the silica with the hydrophobing agent. The resulting dispersion of hydrophobic silica in an inert, liquid, hydrophobic carrier medium is then subjected to high shear forces for a time sufficient to produce a homogeneous dispersion of hydrophobic silica particles in a defoaming composition.Type: GrantFiled: March 26, 1999Date of Patent: October 16, 2001Assignee: Cognis CorporationInventors: Ronald W. Broadbent, Dharmesh Chovatia
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Patent number: 6251958Abstract: A process for preparing a defoamer composition by providing a high-shear, in-line mixer having a rotor-stator assembly with at least one concentric set of shearing teeth which rotate at a tip speed of up to about 25 meters per second and feeding to said mixer a melt of a hydrophobic defoaming agent along with a functional carrier liquid at a controlled mass flow rate and temperature. After mixing, the mixture is cooled and discharged into a receiving vessel.Type: GrantFiled: April 8, 1999Date of Patent: June 26, 2001Assignee: Henkel CorporationInventors: Puvin Pichai, Kenneth Breindel
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Patent number: 6207722Abstract: The present invention relates to a foam control composition and to its use in foaming systems. More particularly, this invention relates to a foam control composition comprising a polysiloxane and a resin-filler made from MQ resins having at least one polyoxyalkylene group. The compositions of this invention exhibit excellent defoam effects and antifoam persistency.Type: GrantFiled: December 31, 1998Date of Patent: March 27, 2001Assignees: Dow Corning Corporation, Dow Corning S.A.Inventors: Donnie Ray Juen, Bianxiao Zhong, Mercedes Diaz, Tessa Johnson
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Patent number: 6197384Abstract: Hydrophobic precipitated silica having the physical/chemical parameters: Drying loass [%] 2.0-10 DIN ISO 787/2 Ignition loss [%] 2-25 DIN ISO 3262/11 Methanol wettability [%] 20-80 titrated Carbon content [%] 1-30 — is produced by mixing a precipitated silica suspension with a silane emulsion and drying it. The hydrophobic precipitated silica may be used for the production of defoamers and in papermaking.Type: GrantFiled: June 25, 1999Date of Patent: March 6, 2001Assignee: Degussa-Huls AGInventors: Jürgen Schubert, Wolfgang Lortz
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Patent number: 6177481Abstract: The present invention relates to mixtures comprising at least one polysiloxane defoamer, at least one emulsifier, at least one nonionic surfactant, at least one polyurethane thickener and water, to a process for the production thereof and to the use thereof.Type: GrantFiled: September 15, 1999Date of Patent: January 23, 2001Assignee: Bayer AktiengesellschaftInventors: Wolfgang Grape, J{umlaut over (u)}rgen Krott, Jan Mazanek, Karl-Heinz Kaesler
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Patent number: 6165968Abstract: This invention relates to a particulate foam control agent comprising from 1 to 30 parts by weight of a silicone antifoam, from 70 to 99 parts by weight of a zeolite carrier for the antifoam, from 1 to 60% by weight of the silicone antifoam of a surface active agent which has been deposited on the zeolite carrier not later than the silicone antifoam and from 1 to 40 parts by weight of a polycarboxylate-type binder or encapsulant, whereby the polycarboxylate-type binder has a pH of 3 or less when dissolved in water. The invention also relates to a detergent composition comprising the particulate foam control agent and a method for the preparation of the foam control agent.Type: GrantFiled: October 20, 1999Date of Patent: December 26, 2000Assignee: Dow Corning S. A.Inventor: Bertrand Lenoble
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Patent number: 6156808Abstract: The present invention provides improved defoaming compositions and methods. The compositions of the invention are basically comprised of polypropylene glycol, particulate hydrophobic silica and a liquid diluent.Type: GrantFiled: January 4, 2000Date of Patent: December 5, 2000Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Roger S. Cromwell, Bobby J. King
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Patent number: 6083998Abstract: Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.Type: GrantFiled: April 24, 1998Date of Patent: July 4, 2000Assignee: BetzDearborn Inc.Inventors: Raimundo Romualdo, Claudio Candido Luiz, Luiz Antonio Fernandes