Admixing A Nonreactive Additive Ingredient In The Form Of A Slurry, Dispersion, Or Suspension (liquid-solid); Said Slurry Dispersion Or Suspension Containing No Solid Polymer Or Sicp Patents (Class 523/333)
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Patent number: 7935745Abstract: Polymer nanocomposites, nanoparticle-containing organogels utilized in forming the polymer nanocomposites, and methods for forming the polymer nanocomposites and nanoparticle-containing organogels are disclosed. Relatively simple and versatile methods are utilized to form the polymer nanocomposites. The process is based on the format of a three-dimensional network of well-individualized nanoparticles, such nanofibers through gelation thereof with an appropriate non-polymeric solvent. The nanoparticle-containing organogel is subsequently filled with a solution of a desired matrix polymer, the composite is dried and compacted to create the polymer nanocomposite. Polymer nanocomposites can be prepared which exhibit dramatic changes in mechanical properties, such as increased shear modulus, when compared to the neat polymer.Type: GrantFiled: March 26, 2008Date of Patent: May 3, 2011Assignee: Case Western Reserve UniversityInventors: Christoph Weder, Jeffrey Capadona, Otto van den Berg
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Patent number: 7888410Abstract: The present invention is a method for the preparation of porous particles that includes dissolving a polymer material in a first organic solvent and adding a second organic solvent and nonionic organic polymer particles to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer to form a dispersion and the dispersion is homogenized. The first and second organic solvents are evaporated and the product is recovered.Type: GrantFiled: April 24, 2007Date of Patent: February 15, 2011Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Xiqiang Yang, Tamara K. Jones, James G. Popowych
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Patent number: 7867555Abstract: A method for coloring powders using a stable colorant dispersion is provided. The method includes mixing a base powder and a stable colorant dispersion. A colored powder composition baying a core particle and a partial shell about the core particle is provided.Type: GrantFiled: February 13, 2004Date of Patent: January 11, 2011Assignee: Valspar Sourcing Inc.Inventors: William G. O'Dell, Steven D. Johnson, Larry B. Brandenburger
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Patent number: 7811739Abstract: The present invention relates to a process for producing a resin emulsion which includes the steps of (a) dispersing a resin containing acidic group in a basic aqueous medium at a temperature lower than a softening point of the resin; (b) neutralizing a dispersion obtained in the step (a) at a temperature not lower than a glass transition point of the resin and not higher than the softening point of the resin; and (c) adding an aqueous liquid to the dispersion neutralized in the step (b) at the temperature not lower than the glass transition point of the resin and not higher than the softening point of the resin to emulsify the resin in the aqueous medium. According to the present invention, the resin emulsion suitably usable for production of a toner for electrophotography can be efficiently produced without using an organic solvent and a special apparatus.Type: GrantFiled: October 11, 2006Date of Patent: October 12, 2010Assignee: KAO CorporationInventors: Nobumichi Kamiyoshi, Shinichi Sata, Yoshinobu Ishikawa
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Patent number: 7812072Abstract: A method of preparing a styrene polymer-silica nanocomposite is disclosed. One embodiment of the method includes polymerizing about 100 parts by weight of a monomer mixture including about 50 to about 80% by weight of an aromatic monomer an about 20 to about 50% by weight of a vinyl cyanide monomer with about 0.5 to about 30 parts by weight of a colloidal silica dispersed in a first organic solvent.Type: GrantFiled: May 30, 2008Date of Patent: October 12, 2010Assignee: Cheil Industries, Inc.Inventors: Byeong Do Lee, Young Sub Jin, Hwan Seok Park, Jae Keun Hong, Young Sik Ryu, Il Jin Kim
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Publication number: 20100215962Abstract: Process for dispersing solid particles in a particulate polymer, which comprises the steps of: (a) forming a solution (OS) of particles of a polymer (P1) in an organic solvent (S); (b) forming an aqueous dispersion (AD) of solid particles (P2); (c) mixing said solution (OS) with said dispersion (AD) as to obtain a liquid mixture (M), while avoiding substantial precipitation of either polymer (P1) or particles (P2); (d) mixing said liquid mixture (M) with a non solvent (NS) as to obtain a slurry (SL) comprising particles (P3); a phase transfer agent (PTA) being further present during steps (b), (c) and/or (d).Type: ApplicationFiled: December 4, 2006Publication date: August 26, 2010Applicant: SOLVAY(Societe Anonyme)Inventors: Jean-Raphael Caille, Fernand Gauthy, Daniel Gloesener
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Patent number: 7741384Abstract: A method of preparing an ink includes homogenizing a dispersion to coat pigment particles in the dispersion with a monomer. An ink for use in a printing device includes pigment particles encapsulated in a polymerized monomer, where the monomer has a polarity that is higher than a polarity of a surface of the pigment particles.Type: GrantFiled: May 11, 2006Date of Patent: June 22, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventor: Hui Liu
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Patent number: 7736563Abstract: The present invention relates to a full dull polyamide 6 yarn and a process for preparing the same. The yarn of this invention contains 1.5 to 2.5% by weight of titanium dioxide relative to the weight of the yarn, has 35 to 95 titanium dioxide particles having a major axial length of greater than 5 ?m being contained in 50 mg of the yarn, and contains 0.1 to 0.5% by weight of phosphate salt (wetting agent) relative to the weight of titanium dioxide. In the process of this invention, 0.1 to 0.5% by weight of phosphate salt relative to the weight of titanium dioxide is added as a wetting agent, carprolactam is applied along with water upon concentration correction, and naphthalene sulfonate based salt is applied along with titanium dioxide slurry during the process of polyamide 6 polymerization.Type: GrantFiled: November 6, 2006Date of Patent: June 15, 2010Assignee: Kolon Industries, Inc.Inventors: Jae-Young Kim, Young-Tae Park
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Patent number: 7625971Abstract: Disclosed are silica-filled rubber granules comprised of a cocoagulation product of rubber and silica, which are extremely less powdery and excellent in handling and kneading, as well as an industrially advantageous process for producing same. The silica-filled rubber granules of the present invention are dried granules of a cocoagulation product of rubber and silica particles, which are characterized in that an average particle diameter (D50) in terms of the sieve analysis is 300˜3000 ?m and the weight ratio of the granules within the range of D50±(D50×0.5) is at least 50% by weight. The silica-filled rubber granules are produced by supplying a cake of a cocoagulation product of silica and rubber having a water content of 40˜80% by weight to a drier provided with an indirect-heating type container having stirring wing blades, and then drying the cake while stirring it with the stirring wing blade.Type: GrantFiled: August 19, 2004Date of Patent: December 1, 2009Assignees: Tokuyama Corporation, Zeon CorporationInventors: Shinji Tokunaga, Tsunetoshi Sugimura, Kazutaka Watanabe, Osamu Yatabe, Takeshi Karato, Takahiko Fukahori, Yoshihiro Chino
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Patent number: 7625973Abstract: Methods for preparing pigmented and nonpigmented powder coating compositions are disclosed. The methods generally involve the use of dispersions comprising a fluoropolymer.Type: GrantFiled: February 24, 2005Date of Patent: December 1, 2009Assignee: PPG Industries Ohio, Inc.Inventors: Ronald R. Ambrose, Anthony M. Chasser, Kristin M. Bartlett, Henry L. Lowman, Joanne M. Funyak
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Patent number: 7619028Abstract: The present invention is to provide a diene rubber composition and a cross-linked diene rubber thereof excellent in tensile strength, wear resistance and processability, keeping compatibility of both good fuel efficiency and high gripping property, and a production method thereof. What is characterized in the composition is that the composition is comprised of 100 parts by weight of a diene rubber having a molecular weight distribution expressed in terms of the ratio of the weight-average molecular weight to the number-average molecular weight of 1.1 to 30, 20 to 200 parts by weight of silica and a cationic polymer, and that a toluene-insoluble rubber content per gram of the silica within the range from 0.2 to 1 g, and diene cross-linked rubber thereof.Type: GrantFiled: January 30, 2004Date of Patent: November 17, 2009Assignees: Tokuyama Corporation, Zeon CorporationInventors: Kazutake Watanabe, Osamu Yatabe, Takeshi Karato, Yoshihiro Chino, Takahiko Fukahori
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Patent number: 7582689Abstract: Elastomer masterbatch is processed in a continuous compounder having multiple parallel elongate rotors axially oriented in an elongate processing chamber. Optionally, additional materials are compounded into the masterbatch, e.g., additives, other elastomeric compositions, etc. Preferably, the masterbatch then is further processed in an open mill. Excellent control of Mooney Viscosity is achieved. In certain preferred embodiments, elastomer composites are produced by novel continuous flow methods and apparatus in which fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a coagulated mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor.Type: GrantFiled: August 12, 2005Date of Patent: September 1, 2009Assignee: Cabot CorporationInventors: Bin Chung, Susan W. Green, Ivan Z. Podobnik, Joseph Cianciolo
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Publication number: 20090018238Abstract: A method for producing a rubber-filler master batch which comprises mixing a rubber solution obtained by dissolving a diene-based rubber in an organic solvent into a slurry obtained by dispersing in water, in advance, carbon black, silica and/or at least one inorganic filler represented by the following general formula (I): nM1.xSiOy.zH2O??(I) [wherein M1 represents at least one selected from the group consisting of metals which are aluminum, magnesium, titanium, calcium and zirconium, oxides and hydroxides of the metals, hydrates thereof and carbonates of the metals, and n, x, y and z respectively represent an integer of 1 to 5, an integer of 0 to 10, an integer of 2 to 5 and an integer of 0 to 10.Type: ApplicationFiled: February 2, 2006Publication date: January 15, 2009Inventors: Kazuhiro Yanagisawa, Kouji Masaki, Kazuaki Someno
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Publication number: 20090017301Abstract: The invention relates to reinforcing glass strands and the structures of such glass strands having an improved wet aging resistance and equipped with a coating composition, obtained from a solution and/or a suspension and/or an emulsion, that comprises (in % by weight of solids): 60 to 95% of at least one polymer 2 to 18% of nanoparticles. It also relates to a coating composition suitable for coating said strands and strand structures, its production method and the composites incorporating the strands and strand structures.Type: ApplicationFiled: December 22, 2006Publication date: January 15, 2009Applicant: Ssint-Gobain Technical Fabrics EuropeInventor: Patrick Moireau
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Publication number: 20080312358Abstract: A non-aqueous pigment dispersion includes a color pigment, a polymeric dispersant, and a dispersion synergist wherein the molecular weight of the anionic part of the dispersion synergist containing at least one carboxylate anion is smaller than 98% of the molecular weight of the color pigment and that the anionic part of the dispersion synergist has a similarity coefficient SIM of at least 0.5 with the similarity coefficient defined by: SIM = t · C S + P - C wherein, S represents the number of atoms in the anionic part of the dispersion synergist; P represents the number of atoms in the color pigment; C represents the largest number of atoms in common between the anionic part of the dispersion synergist and the color pigment as one continuous structure; and t is an integer representing the number of times that the largest number of atoms in common C fits into the organic color pigment, without using atoms of the color pigment twice.Type: ApplicationFiled: November 28, 2006Publication date: December 18, 2008Applicant: AGFA GRAPHICS NVInventors: Geert Deroover, Nicolas Point
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Patent number: 7449516Abstract: Powder coating materials preparable by (1) mixing at least two liquid components comprising in each case at least one liquid starting product in a static mixer, to give a molecularly disperse and/or finely dispersed liquid mixture, (2) emulsifying the liquid mixture (1) in an aqueous medium in a dispersing unit, to give an aqueous emulsion of liquid particles, (3) cooling the emulsion (2) so that a suspension of dimensionally stable particles is formed, (4) isolating the dimensionally stable particles from the suspension (3) or alternatively (3) isolating the dimensionally stable particles directly from the emulsion (2); and also processes for preparing them and their use as coating materials, adhesives, and sealing compounds or to prepare such compositions.Type: GrantFiled: May 24, 2002Date of Patent: November 11, 2008Assignee: BASF Coatings AGInventors: Robert Bayer, Werner-Alfons Jung, Michael Mauss, Hans-Joachim Weintz, Jan Berg, Reinhard Polke, Heiko Wolf, Michael Stang
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Publication number: 20080255270Abstract: A method of preparing a styrene polymer-silica nanocomposite is disclosed. One embodiment of the method includes polymerizing about 100 parts by weight of a monomer mixture including about 50 to about 80% by weight of an aromatic monomer and about 20 to about 50% by weight of a vinyl cyanide monomer with about 0.5 to about 30 parts by weight of a colloidal silica dispersed in a first organic solvent.Type: ApplicationFiled: May 30, 2008Publication date: October 16, 2008Applicant: CHEIL INDUSTRIES INC.Inventors: Byeong Do LEE, Young Sub JIN, Hwan Seok PARK, Jae Keun HONG, Young Sik RYU, Il Jin KIM
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Publication number: 20080234415Abstract: The present invention provides methods of conducting emulsion polymerizations and dispersion resulting therefrom. The present invention additionally provides substrates coated or treated with polymeric dispersions.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Inventors: Michael S. Williams, Michael Grigat, Robert S. Jackson
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Publication number: 20080185160Abstract: The present invention relates to water-in-oil polymer dispersions comprising of a continuous organic phase and therein finely dispersed and cross-linked, water-swellable polymerizates, where these have a residual monomer content of less than 1,000 ppm. The present invention relates further to a process for the production of polymer dispersions according to the invention. In addition, the present invention relates to devices for fire prevention and firefighting and to the use of the polymer dispersions according to the invention.Type: ApplicationFiled: March 12, 2008Publication date: August 7, 2008Inventors: Bernd DIENER, Veronika Gehler, Erich Kuester, Daniel Roulands, Dieter Wehrhahn
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Patent number: 7407611Abstract: A method is disclosed for producing elastomer compounds for use in the production of rubbers. At least one elastomer to be processed for the production of an elastomer mixture can be slowly added to a mixer/extruder and is mixed and plasticized and/or masticated (melted) while it passes through the mixer/extruder. The elastomer, when slowly added to the mixer/extruder, can be present in a fluid medium in an evenly distributed form.Type: GrantFiled: March 12, 2004Date of Patent: August 5, 2008Assignee: Buhler AGInventors: Federico Innerebner, Erhard Krumpholz, Christoph Näf, Achim-Philipp Sturm, Bernhard Stalder, Roland Halter
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Patent number: 7374699Abstract: A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the viscosity of an aqueous solution at 20° C. prepared by mixing an aqueous solution SA (with a viscosity at 20° C. of 100 mPa·s or less) of compound (A) with an aqueous solution SB (with a viscosity at 20° C. of 100 mPa·s or less) of compound (B) in the ratio of 50/50 by weight can be at least twice as high as the viscosity of either aqueous solution before mixed.Type: GrantFiled: June 14, 2002Date of Patent: May 20, 2008Assignee: Kao CorporationInventors: Hotaka Yamamuro, Koji Koyanagi, Daisuke Shiba
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Publication number: 20080070040Abstract: Aqueous resinous binders comprising graft copolymers, water-dilutable urethane polyols, epoxy-phosphorus acid reaction products, and an aqueous dispersion comprising the reaction product of trimellitic anhydride and a polyol, wherein the molar ratio of trimellitic anhydride to the polyol in the reaction product ranges from 1:2 to 1:4, and wherein the reaction product is further reacted with an anhydride to form another reaction product are disclosed. The binders are useful in primer formulations for automotive applications.Type: ApplicationFiled: July 5, 2007Publication date: March 20, 2008Inventors: Paul H. Lamers, Christopher A. Verardi, Michele L. Meli, Carolyn A.K. Novak
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Patent number: 7307121Abstract: This invention discloses a method for preparing rubber compositions that exhibit unique combinations of properties that are desirable for tire tread applications for enhanced snow/ice and wet traction, low rolling resistance and increased treadwear performance in comparison with conventional silica compounds. Specifically, a high reactively silane coupling agent, such as a mercaptosilane, is used in combination with a silane coupling typically used for silica tread compounds such as bis(triethoxylsilylpropyl)disulfide to treat silica pellets in a hydrocarbon solvent at elevated temperatures. The treated silica is then blended with solution elastomer cement in a hydrocarbon solvent. The deposited reactive silanes partially react with the elastomer molecules forming a layer of polymer grafted on the silica surfaced. This structure significantly improves the silica retention during the steam stripping operation. Almost 100% (99+%) silica retention has been achieved by this invention.Type: GrantFiled: March 19, 2004Date of Patent: December 11, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Ping Zhang, Sun-Lin Chen
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Publication number: 20070260002Abstract: Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that improve the reheat properties of the compositions. Processes for making such compositions are also disclosed. The titanium nitride particles are made from titanium oxide particles by heating the titanium oxide particles in a nitrogen-containing gas to a temperature sufficient to convert at least a portion of the titanium oxide particles to titanium nitride particles. The particles are then mixed with a liquid carrier to obtain a slurry of titanium nitride particles, and the slurry is introduced to a polyester polymerization process to obtain a polyester composition having improved reheat.Type: ApplicationFiled: September 20, 2006Publication date: November 8, 2007Inventors: Zhiyong Xia, Robert Lin
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Publication number: 20070232745Abstract: The present invention provides a process for preparing an oil extended rubber, in which an effect on environments can be taken into consideration, provision for the future decrease of petroleum supply can be satisfied, and further, strength is excellent without molecular breakage, an oil extended rubber obtained by the preparation process, and a tire using the oil extended rubber. A process for preparing an oil extended rubber, comprising (a) a step of preparing an oil-in-water type emulsion by emulsifying a vegetable oil having an iodine value of not less than 135 with a surfactant, (b) a step of mixing said emulsion and a modified natural rubber latex, and then aging the mixture, and (c) a step of coagulating the mixture obtained in the step (b) to obtain a lump of a rubber, an oil extended rubber obtained by the preparation process, and a rubber composition for a tire and a tire which use the oil extended rubber.Type: ApplicationFiled: March 21, 2007Publication date: October 4, 2007Inventors: Toshiaki Sakaki, Naoya Ichikawa, Takayuki Hattori, Chee-Cheong Ho, Choong Dick Hean
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Patent number: 7186494Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the latex contains a polymer with a static yield stress of from about 0.05 to about 3 dyne/cm2, a viscosity for the polymer latex of from about 5 to about 35 centipoises (cps), and wherein said toner product possesses a volume average particle size distribution index GSDv of equal to or less than about 1.27, a number average particle size distribution index GSDn of equal to or less than about 1.30, a low number average particle size index GSDn50/16 of equal to about or less than about 1.32, and a ratio of the volume average particle size distribution index GSDv to a number average particle size distribution index GSDn of from about 0.93 to about 1.Type: GrantFiled: April 14, 2003Date of Patent: March 6, 2007Assignee: Xerox CorporationInventors: Suresh K. Ahuja, Chieh-Min Cheng
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Patent number: 7094830Abstract: A process for preparing an aqueous dispersion of composite particles composed of addition polymer and finely divided inorganic solid is described.Type: GrantFiled: June 14, 2002Date of Patent: August 22, 2006Assignee: BASF AktiengesellschaftInventors: Zhijian Xue, Harm Wiese
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Patent number: 7015260Abstract: Corona resistant, high temperature polymeric materials are disclosed which are generally useful in high voltage wire insulation or similar type applications. The materials contain composite fillers having an organic component with excellent dispersion properties in certain organic solvents, depending upon the particular embodiment selected, and an inorganic ceramic oxide component generally having excellent corona resistance properties.Type: GrantFiled: June 4, 2003Date of Patent: March 21, 2006Assignee: E.I. du Pont de Nemours and CompanyInventor: Paul Arthur Meloni
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Patent number: 7001937Abstract: A process for the production of a colored resin composition, comprising a step (A) of producing an aqueous slurry of a pigment, a step (B) of producing a melting composition of metallocene type polyolefin containing a dispersant and a solvent, a step (C) of kneading the aqueous slurry obtained in the step (A) with the melting composition obtained in the step (B) and a step (D) of removing the solvent and the water from the kneaded mixture obtained in the step (C), a colored composition obtained in the above process has excellent in pigment dispersibility and high color developing properties, a colored resin molded article obtained from the colored resin composition do not give a physical-properties inhibition of 5% or higher and has a color developing properties.Type: GrantFiled: February 14, 2002Date of Patent: February 21, 2006Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Hitoshi Maki, Masayasu Kawamura, Masashi Koide
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Patent number: 6946510Abstract: The invention relates to the use of a slightly anionic and water-soluble copolymer, as a dispersing agent and/or an agent for assisting the grinding of pigments and/or mineral fillers in aqueous suspension giving on the one hand a low Zeta potential to the aqueous suspensions of the said fillers and/or pigments and on the other hand affording an electro-steric stabilisation of the said suspensions. The invention also relates to the said aqueous suspensions of mineral pigments and/or fillers and their uses in the fields of paper, such as the manufacture or coating of paper, and drilling muds used for petroleum prospecting or extraction. The invention also relates to the use of the said dispersing agents and/or agent for assisting the grinding in the field of paints and plastic materials such as thermoplastic or thermosetting resins.Type: GrantFiled: June 12, 2001Date of Patent: September 20, 2005Assignee: Coatex S.A.SInventors: Jean-Marc Suau, Christian Jacquemet, Jacques Mongoin, Patrick A. C. Gane
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Patent number: 6858668Abstract: This invention relates to a process for the preparation of aqueous emulsions of blocked (poly)isocyanates, this process comprising the steps consisting successively in: a) placing an isocyanate composition containing free isocyanate functions in contact with at least one blocking agent A in the presence of a surfactant B and an aqueous phase, the said isocyanate composition being added gradually to a stock containing at least some of the aqueous phase and at least some of the blocking agent; and optionally, b) subjecting the mixture obtained to a shear (speed gradient) of greater than 1000 s?1, preferably greater than 20,000 s?1 and less than 1,000,000 s?1, preferably less than 200,000 s?1, and c) repeating step b), optionally after step a) has been repeated, until a stable emulsion is obtained whose particles have a Sauter diameter of greater than 0.1 ?m, preferably 0.2 ?m, and less than 5 ?m, preferably less than 2 ?m, and a dispersion width of less than 5 ?m.Type: GrantFiled: August 27, 1998Date of Patent: February 22, 2005Assignee: Rhodia ChimieInventors: Jean-Marie Bernard, Jean-Pierre Corbet, Minou Nabavi, Philippe Galy-Jammou, Denis Revelant
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Patent number: 6858666Abstract: A method forms self-sustaining particles that comprise a hydrophobic (oleophilic) phase in particulate form, with no need for a rigid shell to encapsulate the phase, and usually with no shell present. The oleophilic phase contains a gelation agent, and preferably an organogelation agent. The particles may be stored alone or in a minor amount (e.g., less than 40% by volume) of water to assist their stability and act as a barrier against their coalescence. These water-separated compositions are not necessarily dispersions or suspensions, but may be merely particles in an aqueous storage environment. The particles have prolonged stability and can be readily, simply, and inexpensively formed. A simple method of manufacture comprises forming a solution of the ingredients (e.g., at least the oleophilic material and gelation agent) at a temperature above their gelation temperature, forming droplets or molten, or liquid or flowable particles of the solutions, and cooling the droplets to form the particulates.Type: GrantFiled: March 4, 2002Date of Patent: February 22, 2005Assignee: Aveka, Inc.Inventors: Monica A. Hamer, William A. Hendrickson, Gordon R. Pryor
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Patent number: 6849371Abstract: A surfactant-free toner process including coalescing by heating in water a coagulant, a polyester resin emulsion, a wax emulsion stabilized with said polyester emulsion and a colorant dispersion stabilized by said polyester emulsion.Type: GrantFiled: June 18, 2002Date of Patent: February 1, 2005Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Enno E. Agur
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Patent number: 6833401Abstract: A process for preparing an aqueous dispersion of particles composed of addition polymer and finely divided inorganic solid (composite particles), in which process a mixture of ethylenically unsaturated monomers is dispersely distributed in aqueous medium and is polymerized by the method of free-radical aqueous emulsion polymerization by means of at least one free-radical polymerization initiator in the presence of at least one dispersely distributed, finely divided inorganic solid and at least one dispersant.Type: GrantFiled: March 29, 2002Date of Patent: December 21, 2004Assignee: BASF AktiengesellschaftInventors: Zhijian Xue, Harm Wiese
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Publication number: 20040254267Abstract: It is an object to provide a coating agent and a paint, which enable sufficient exhibition of the capability of a photocatalyst such as the capability to decompose an organic substance or the like; particularly, sufficient exhibition of the capability on a thin coating film.Type: ApplicationFiled: July 23, 2004Publication date: December 16, 2004Inventor: Yoshiyuki Nagae
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Publication number: 20040234766Abstract: An improved method for packaging electronic devices by coating organic light emitting device uniformly with an encapsulation material which includes of nanometer inorganic powder and polymer, to form a moisture permeation resistant layer between the nanometer inorganic powder and the polymer after the solidification of the package layer.Type: ApplicationFiled: May 5, 2004Publication date: November 25, 2004Inventors: Yi-Hsuan Liu, Ju-Liang He
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Patent number: 6822036Abstract: Rubber powders with a high degree of filling are obtained by precipitating water-containing suspensions which contain fillers and rubber emulsions or rubber solutions. Use thereof to prepare vulcanizable rubber mixtures.Type: GrantFiled: May 23, 2000Date of Patent: November 23, 2004Assignee: PKU Pulverkautschuk Union GmbHInventors: Udo Görl, Thomas Trempler, Reinhard Stober, Uwe Ernst
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Patent number: 6815137Abstract: A process for producing polymer fine particles comprising: dispersing a solution obtained by dissolving a hydrophobic polymer in a solvent immiscible with water in an aqueous phase comprising fine particles of an oxide or hydroxide of at least one element selected from the group consisting of elements belonging to 2 to 15 groups in the periodic table using a surfactant; or dispersing a solution obtained by dissolving a hydrophobic polymer in a solvent immiscible with water in an aqueous phase comprising a water-soluble resin; and then removing the solvent from the oil droplets to form polymer fine particles dispersed in water.Type: GrantFiled: December 28, 2001Date of Patent: November 9, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Hoshi, Koichi Kawamura, Sumiaki Yamasaki
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Publication number: 20040202950Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the latex contains a polymer with a static yield stress of from about 0.05 to about 3 dyne/cm2, a viscosity for the polymer latex of from about 5 to about 35 centipoises (cps), and wherein said toner product possesses a volume average particle size distribution index GSDv of equal to or less than about 1.27, a number average particle size distribution index GSDn of equal to or less than about 1.30, a low number average particle size index GSDn50/16 of equal to about or less than about 1.32, and a ratio of the volume average particle size distribution index GSDv to a number average particle size distribution index GSDn of from about 0.93 to about 1.Type: ApplicationFiled: April 14, 2003Publication date: October 14, 2004Applicant: Xerox Corporation.Inventors: Suresh K. Ahuja, Chieh-Min Cheng
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Patent number: 6764802Abstract: A process including: agitating a mixture including a liquid and a plurality of resin particles within a vessel at a first shear condition; circulating a portion of the mixture from the vessel through a mixer; adding not all at once an aggregating agent for the resin particles and mixing the aggregating agent with the circulating mixture portion within the mixer at a second shear condition more intensive than the first shear condition to result in a post-mixer circulating composition; and returning the post-mixer circulating composition to the vessel wherein the post-mixer circulating composition undergoes the agitating at the first shear condition.Type: GrantFiled: July 29, 2002Date of Patent: July 20, 2004Assignee: Xerox CorporationInventors: Milan Maric, Alan E. J. Toth, Thomas E. Enright, Marko D. Saban
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Patent number: 6743835Abstract: The invention relates to a process for preparing nondusting free-flowing pigment concentrates with removal of the water from pigment suspensions comprising polymers and dispersants in a fluidized bed drier. The resulting bead-form pigment concentrates are nondusting and readily free-flowing. The invention further embraces the use of pigment concentrates prepared in this way for coloring plastics and polymers.Type: GrantFiled: December 5, 2001Date of Patent: June 1, 2004Assignee: Goldschmidt AGInventors: Werner Schäfer, Manfred Scheiba, Stefan Stadtmüller, Markus Weimann, Karlheinz Rümpler, Ulrich Walter
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Patent number: 6730719Abstract: In the method for preparing a nanocomposite by intercalating a smectite clay with a quaternary ammonium ion, and exfoliating the intercalated clay into a polymer matrix; an improvement is disclosed which augments exfoliation. The smectite clay is edge treated with negatively charged organic molecules prior to the exfoliation. For these purposes a high charge density anionic polymer such as a polyacrylate may be used.Type: GrantFiled: May 4, 2001Date of Patent: May 4, 2004Assignee: Southern Clay Products, Inc.Inventor: Clois E. Powell
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Publication number: 20040077756Abstract: The plastics additives powder compositions of the present invention are provided as powder particles having impact modifier particles and processing aid particles which are coagulated and dried. When blended in thermoplastic resins, such as PVC, the subject plastics additives powders both increase the impact strength and improve process efficiency and melt strength. The impact and processing properties achieved by the present invention are more efficient than using separate impact modifier and processing aid powders. The method of preparing the powder compositions of the present invention also enable impact modifier particles having rubber weight fractions greater than 88% to be isolated as free-flowing powders.Type: ApplicationFiled: July 24, 2003Publication date: April 22, 2004Inventors: Jane Elizabeth Weier, Morris Christopher Wills, Robert William Coyle
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Publication number: 20040063818Abstract: The invention relates to a process for preparing polyorganosiloxane emulsions whose internal phase comprises the active polyorganosiloxane substance and whose external phase comprises, in solution or dispersion, an emulsifier or an emulsifier mixture and, if desired, an emulsion-stabilizing protective colloid, to the polysiloxane emulsions thus obtainable and, in particular, to the use of these macroemulsions, so prepared, as defoamers.Type: ApplicationFiled: September 17, 2002Publication date: April 1, 2004Inventors: Stefan Silber, Roland Sucker
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Patent number: 6713534Abstract: A fine-particle, free-flowing rubber powder containing silicatic fillers, one or more organosilanes having trialkoxysilyl groups, and a rubber prepared by solution polymerization is prepared by a process that starts from a two-phase system: 1) filler in water, and 2) rubber in organic solvent. A rubber/silicatic filler/silane composite is formed during transfer, under gentle conditions, of the various reactants into a single phase. The process features a high degree of freedom in selecting forms of filler and in selecting the organosilane and gives a finished rubber powder in which a silicatic filler and an organosilane have undergone complete chemical reaction.Type: GrantFiled: April 10, 2002Date of Patent: March 30, 2004Assignee: PKU Pulverkautschuk Union GmbHInventors: Udo Goerl, Matthias Schmitt, Reinhard Stober, Andreas Gouw
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Publication number: 20040018441Abstract: A process including:Type: ApplicationFiled: July 29, 2002Publication date: January 29, 2004Applicant: Xerox CorporationInventors: Milan Maric, Alan E.J. Toth, Thomas E. Enright, Marko D. Saban
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Patent number: 6673505Abstract: A process for the preparation of a toner by mixing a colorant, a latex, optionally a wax and a polyamine salt coagulant to form toner size aggregates, wherein the polyamine salt is then neutralized or converted to an amide or hydrolyzed to an acid by the introduction of a base followed by a pH reduction with an acid to enable rapid coalescence or fusion of the aggregates.Type: GrantFiled: March 25, 2002Date of Patent: January 6, 2004Assignee: Xerox CorporationInventors: Lu Jiang, Armin R. Volkel, Chieh-Min Cheng, Michael A. Hopper, Walter Mychajlowskij, Raj D. Patel
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Publication number: 20030236322Abstract: The present invention relates to a method for dry coalescing and kneading powders, for the exfoliation thereof, comprising the steps of providing a polytetrafluoro-ethylene aqueous suspension or emulsion, stirring to flocculate the emulsion, fully drying the emulsion and dispersing the obtained concentrated material through the powders to be processed.Type: ApplicationFiled: May 8, 2003Publication date: December 25, 2003Inventor: Angelo Murer
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Publication number: 20030232268Abstract: A surfactant-free toner process including coalescing by heating in water a coagulant, a polyester resin emulsion, a wax emulsion stabilized with said polyester emulsion and a colorant dispersion stabilized by said polyester emulsion.Type: ApplicationFiled: June 18, 2002Publication date: December 18, 2003Applicant: Xerox CorporationInventors: Guerino G. Sacripante, Enno E. Agur
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Patent number: RE42099Abstract: Elastomer masterbatch is processed in a continuous compounder having multiple parallel elongate rotors axially oriented in an elongate processing chamber. Optionally, additional materials are compounded into the masterbatch, e.g., additives, other elastomeric compositions, etc. Preferably, the masterbatch then is further processed in an open mill. Excellent control of Mooney Viscosity is achieved. In certain preferred embodiments, elastomer composites are produced by novel continuous flow methods and apparatus in which fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a coagulated mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor.Type: GrantFiled: November 24, 2009Date of Patent: February 1, 2011Assignee: Cabot CorporationInventors: Bin Chung, Susan W. Green, Ivan Z. Podobnik, Joseph Cianciolo