Solid-walled Microcapsule Formed By In Situ Polymerization Patents (Class 427/213.34)
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Patent number: 11655374Abstract: A method of making pigments, such as special effect pigment includes forming a first slurry including a substrate, a polymer precursor, and a radical initiator; forming a solution including an emulsifier; and combining the first slurry and the solution so that the substrate is encapsulated by a first coating. Special effect pigments formed by the method are also disclosed.Type: GrantFiled: April 12, 2019Date of Patent: May 23, 2023Assignee: VIAVI SOLUTIONS INC.Inventor: Kangning Liang
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Patent number: 10907054Abstract: Ruptureable, dual reagent mono-capsules are disclosed that have a pre-formed capsule having a core composition, which includes a first reagent, encapsulated within a polymer wall, and a shell connected to an exterior surface of the polymer wall by a surfactant. The shell is made from a second reagent that is chemically bonded to the surfactant by a chemical electrostatic interaction. Upon rupture of the polymer wall of the mono-capsule, the first reagent and the second reagent chemically react with one another to form a reaction product.Type: GrantFiled: February 1, 2019Date of Patent: February 2, 2021Assignee: Microtek Laboratories, INC.Inventors: Carl M. Lentz, Kayla L. M. Ryan
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Patent number: 10611983Abstract: The present disclosure relates to new and optimized processes for the preparation of micro- and nano-scale capsules containing lubricant chemical additives. The present disclosure also relates to micro- and nano-scale capsules prepared by such processes, which are useful in a variety of applications, including automotive lubricants, diesel lubricants, industrial lubricants, metal-working lubricants, coolants, and process fluids. Micro-and nano-scale capsules prepared as described herein have the required properties that such capsules need to exhibit in order to function effectively and meet the requirements imposed by engine lubrication conditions. The microcapsules may be dispersed in a lubricating oil such that the lubricant exhibits improved stability and anti-wear performance, thereby improving engine fuel efficiency and performance.Type: GrantFiled: May 15, 2015Date of Patent: April 7, 2020Assignee: The George Washington UniversityInventors: Stephen M. Hsu, Fei Zhao
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Patent number: 10538658Abstract: The present invention is applicable to the field of polymer material preparation, and provides a method for preparing polymer hollow microspheres, the steps are as follows: mixing a styrene-based monomer A, an acrylic monomer B, and an acrylate monomer C with a initiator, and reacting to prepare a seed emulsion; maintaining the temperature of the seed emulsion unchanged, mixing the styrene-based monomer A, the monomer C, and a sulfur-containing acrylic monomer D with the initiator, continuously dripping to the seed emulsion, to obtain a product; adding alkaline solution to the product, then adding acid solution, and finally neutralizing, to obtain hollow microspheres.Type: GrantFiled: July 3, 2018Date of Patent: January 21, 2020Assignee: SHENZHEN UNIVERSITYInventors: Shaojun Chen, Haitao Zhuo, Lijun Lai, Jinghao Yang
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Patent number: 9089830Abstract: Aqueous suspensions of silicate shell microcapsules are disclosed having a core containing a burst aid wherein the silicate shell microcapsules are obtained by; I) mixing an oil phase containing a burst aid and an aqueous solution of a cationic surfactant to form an oil in water emulsion, II) adding a water reactive silicon compound comprising a tetraalkoxysilane to the oil in water emulsion, III) polymerizing the tetraalkoxysilane at the oil/water interface of the emulsion to form a microcapsule having a core containing the oil and a silicate shell.Type: GrantFiled: December 11, 2009Date of Patent: July 28, 2015Assignee: Dow Corning CorporationInventors: Leon Andre Marteaux, Brett Lee Zimmerman
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Patent number: 9079149Abstract: The proposal is made for a process for the preparation of a minisuspoemulsion of submicron core/shell particles, wherein the starting material is a suspoemulsion of a first disperse liquid phase I in a second continuous liquid phase II, which comprises, in the first disperse liquid phase I, submicron particles of a solid C forming the core, and a precursor substance PS for the shell dissolved in molecularly disperse form and, if appropriate, a reactant R, and wherein the submicron core/shell particles CS are prepared in the first disperse liquid phase I of the suspoemulsion by chemical or physical conversion of the precursor substance PS for the shell.Type: GrantFiled: November 13, 2007Date of Patent: July 14, 2015Assignee: BASF AktiengesellschaftInventors: Thomas Danner, Bernd Sachweh, Sonja Viereck
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Patent number: 9050580Abstract: It is possible to perform microencapsulation of a bioactive substance having a solid form at ordinary temperature in a predetermined wall thickness and particle size without the need of dissolving the solid biologically active substance in any solvent by a method for producing a microcapsule, comprising: heating an aqueous dispersion comprising a dispersion stabilizer, an ionic surfactant, the solid biologically active substance, a polymerization initiator and a radical-polymerizable monomer subjected to ultrasonic irradiation. Therefore, the method enables to design a desired particle readily and it is useful for the microencapsulation.Type: GrantFiled: October 9, 2007Date of Patent: June 9, 2015Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Eriko Takeko
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Patent number: 9040080Abstract: The present disclosure relates to a method of melt processing an active agent. The method may include encapsulating an active agent in a first polymer material exhibiting a first processing temperature T1 and forming capsules including the active agent. The method may also include melt processing the capsules with a second polymer material exhibiting a second processing temperature T2, wherein T1>T2.Type: GrantFiled: October 21, 2008Date of Patent: May 26, 2015Assignee: SOUTHWEST RESEARCH INSTITUTEInventors: Hong Dixon, Joseph A McDonough
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Publication number: 20150073101Abstract: The present invention relates to a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite comprising the same, and more specifically, a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite including the same, wherein when forming a polymer coating layer on surfaces of particles that are not subjected to separate surface treatment, excessive polymers uncoated on nanoparticles are easily removed by adding to an ionic liquid or an apolar solvent so that the polymer coating layer is formed with a nanometer-scale uniform thickness and a dense coating density, thereby showing excellent dispersibility in a polymer matrix.Type: ApplicationFiled: April 3, 2013Publication date: March 12, 2015Inventors: Byoung Gak Kim, Jong Chan Won, Yong Seok Kim, No Kyun Park, Jin Young Park
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Patent number: 8961825Abstract: Provided herein are core-shell silica nanoparticles with a dense silica shell. The nanoparticles have improved properties such as, for example, increased photo luminescence and stability. Also provided are methods for making the nanoparticles.Type: GrantFiled: April 15, 2010Date of Patent: February 24, 2015Assignee: Cornell UniversityInventors: Ulrich B. Wiesner, Erik Herz, Hooisweng Ow
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Patent number: 8940363Abstract: The present invention of three-stage process relates to preparing hollow particles with a buffer layer, exhibiting integrity of particle structure and uniformity of particle size, used in plastic or paper coating, and showing superior characteristics of gloss, whiteness, high opacity, high printing color density and good water resistance.Type: GrantFiled: August 17, 2012Date of Patent: January 27, 2015Assignee: Nan Ya Plastics CorporationInventors: Dein Run Fung, Sen Huang Hsu, Chih Hsun Liu, Hsu Ming Cheng
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Publication number: 20140378369Abstract: The invention provides a benefit agent delivery particle having an average diameter of less than 50 micron comprising; at least one shell formed by a step-growth polymerisation reaction, preferably involving an isocyanate monomer, more preferably a urethane and/or a urea, interior said shell, at least one region formed by chain-growth polymerisation reaction (preferably a free-radical polymerisation) which does not involve an isocyanate, c) optionally, a benefit agent interior to said shell, and/or a deposition aid exterior to said shell. The invention further provides a process for the preparation of such particles wherein the shell is formed prior to the chain-growth polymerisation of the at least one region interior of the shell, preferably be forming the shell at a temperature at which the chain-growth reaction is inhibited.Type: ApplicationFiled: September 10, 2014Publication date: December 25, 2014Applicant: Conopco, Inc., D/B/A UNILEVERInventors: Stuart Anthony Barnett, Criag Warren Jones, Adam John Limer, James Merrington, Jeremy Nicholas Winter
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Patent number: 8906449Abstract: A method for making a cathode composite material of a lithium ion battery is disclosed. In the method, a composite precursor is formed. The composite precursor includes a cathode active material precursor and a coating layer precursor coated on a surface of the cathode active material precursor. The composite precursor is reacted with a lithium source chemical compound, to lithiate both the cathode active material precursor and the coating layer precursor in the composite precursor.Type: GrantFiled: November 30, 2012Date of Patent: December 9, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Jun Lu, Wei-Yang Wang, Qing Peng
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Patent number: 8859288Abstract: Methods to produce pH-sensitive microparticles that have an active agent dispersed in a polymer matrix have certain advantages over microcapsules with an active agent encapsulated in an interior compartment/core inside of a polymer wall. The current invention relates to pH-sensitive microparticles that have a corrosion-detecting or corrosion-inhibiting active agent or active agents dispersed within a polymer matrix of the microparticles. The pH-sensitive microparticles can be used in various coating compositions on metal objects for corrosion detecting and/or inhibiting.Type: GrantFiled: July 5, 2012Date of Patent: October 14, 2014Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Wenyan Li, Jerry W. Buhrow, Scott T. Jolley, Luz M. Calle
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Patent number: 8828415Abstract: The present Invention deals with an alternative Interfacial polymerization process of microencapsulation, microcapsule's produced thereof, microencapsulated agrochemicals, pharmaceuticals, catalysts and phase transfer materials, and formulations thereof, by means of microcapsules and starting materials with the participation of acetylene carbamide derivatives in the final structure of the microcapsules' wall.Type: GrantFiled: June 5, 2012Date of Patent: September 9, 2014Inventors: Victor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Publication number: 20140050845Abstract: The present invention of three-stage process relates to preparing hollow particles with a buffer layer, exhibiting integrity of particle structure and uniformity of particle size, used in plastic or paper coating, and showing superior characteristics of gloss, whiteness, high opacity, high printing color density and good water resistance.Type: ApplicationFiled: August 17, 2012Publication date: February 20, 2014Inventors: Dein Run Fung, Sen Huang Hsu, Chih Hsun Liu, Hsu Ming Cheng
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Patent number: 8603577Abstract: A process for preparing water-absorbing polymer particles by coating water-absorbing polymer particles with a particulate solid in a mixer, wherein the particulate solid is dispersed by means of a gas stream and the supply of the dispersed particulate solid in the mixer ends below the product bed surface.Type: GrantFiled: March 17, 2008Date of Patent: December 10, 2013Assignee: BASF SEInventors: Holger Barthel, Martin Wendker, Reiner Witt
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Patent number: 8526099Abstract: A method for manufacturing microcapsules is provided. The microcapsules each include an electrophoretic dispersion liquid containing at least one type of electrophoretic particles in a dispersion medium, and a capsule body made of an organic polymer and containing the electrophoretic dispersion liquid. The method includes forming droplets of the electrophoretic dispersion liquid by dispersing the electrophoretic dispersion liquid in an polar dispersion medium, and forming the capsule bodies by mixing a polymerization initiator and a polymerizable surfactant having a hydrophilic group, a hydrophobic group and a polymerizable group with the polar dispersion medium so as to coat the droplets with the polymerizable surfactant and induce a polymerization reaction to form the organic polymer.Type: GrantFiled: April 19, 2006Date of Patent: September 3, 2013Assignee: Seiko Epson CorporationInventors: Hitoshi Yamamoto, Takeo Kawase, Toshiyuki Miyabashi
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Patent number: 8524803Abstract: An encapsulated product comprising a core substance encapsulated with a wall material mainly comprising a polymer, wherein the polymer contacts the core substance through an ionic surfactant a and comprises at least (1) a repeating structural unit derived from an ionic polymerizable surfactant B and/or ionic monomer and (2) a repeating structural unit derived from an ionic polymerizable surfactant C having an electric charge the same as or opposite the electric charge of the ionic surfactant; or an encapsulated product comprising a core substance with a wall material mainly comprising a polymer, wherein the polymer comprises a repeating structural unit comprising a hydrophobic monomer and is present between (1) an ionic surfactant b and (2) an ionic surfactant c.Type: GrantFiled: October 18, 2005Date of Patent: September 3, 2013Assignee: Seiko Epson CorporationInventor: Toshiyuki Miyabayashi
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Publication number: 20130095239Abstract: A method for forming a system including polymer-encapsulated nanoparticles includes forming an inverse mini-emulsion including a continuous phase of a non-aqueous medium and a discontinuous phase of at least: a plurality of nanoparticles having a polar surface, and at least one of i) a polar, water-soluble, or water-miscible monomer, or ii) a polar, water-soluble, or water-miscible pre-polymer. The method further includes initiating polymerization of the at least one of the monomer or the prepolymer to form a polymer coating on each of the plurality of nanoparticles in the non-aqueous medium.Type: ApplicationFiled: December 3, 2012Publication date: April 18, 2013Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventor: Hewlett-Packard Development Company, L.P.
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Capsulated colorant, method of preparing the same, ink composition including the capsulated colorant
Patent number: 8420730Abstract: The present disclosure provides a capsulated colorant including a colorant and a polymer resin coating the colorant, wherein the polymer resin is obtained by polymerization of a polymerizable composition including a basic monomer, a macromonomer and a polymerizable unsaturated monomer; a method of preparing the capsulated colorant; and an ink composition including the capsulated colorant.Type: GrantFiled: March 2, 2010Date of Patent: April 16, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jong-In Lee, Sang-Eum Shim -
Patent number: 8329822Abstract: A polymer composition comprising A) a first polymer comprising (a) hydrophobized nanoparticle; (b) C1 to C18, straight, branched, or cyclic alkyl(meth)acrylate; (c) N-methylol(meth)acrylamide or a monomer of formula (I) R—(OCH2CH2)a—O—C(O)—C(R1)?CH2??(I) ?wherein R is hydrogen, C1-C4 alkyl, or —C(O)—C(R1)?CH2, and R1 is H or —CH3; said first polymer in contact with B) a second polymer comprising (d) a fluorinated monomer of formula (II) Rf1-L-X—C(O)—C(R)?CH2??(II) ?wherein Rf1 is a monovalent, partially or fully fluorinated, linear or branched, alkyl radical having 2 to about 100 carbon atoms; optionally interrupted by 1 to about 50 oxygen atoms; wherein the ratio of carbon atoms to oxygen atoms is at least 2:1 and no oxygen atoms are bonded to each other; L is a bond or a linear or branched divalent linking group having 1 to about 20 carbon atoms, said linking group optionally interrupted by 1 to about 4 hetero-radicals selected from the group consisting of —O—, —NR6—, —S—, —SO—, —SO2—, and —N(R6)Type: GrantFiled: November 9, 2009Date of Patent: December 11, 2012Assignee: E.I. du Pont de Nemours and CompanyInventors: Gerald Oronde Brown, Victoria A. Helinski
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Patent number: 8323794Abstract: Injectable hydrogel microspheres are prepared by forming an emulsion where hydrogel precursors are in a disperse aqueous phase and polymerizing the hydrogel precursors. In a preferred case, the hydrogel precursors are poly(ethylene glycol) diacrylate and N-isopropylacrylamide and the continuous phase of the emulsion is an aqueous solution of dextran and a dextran solubility reducer. The microspheres will load protein, e.g., cytokines, from aqueous solution.Type: GrantFiled: August 12, 2010Date of Patent: December 4, 2012Assignee: Cornell Research Foundation, Inc.Inventors: Chih-Chang Chu, Xian-Zheng Zhang, Da-Qing Wu
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Patent number: 8304485Abstract: A process for forming an opacifying pigment encapsulated in polymer including (a) dispersing a pigment particle having an average particle diameter of from 150 to 500 nm and an index of refraction of at least 1.8 such as, for example, TiO2 in a medium with from 0.1% to 10% by weight, based on the weight of said pigment particle, sulfur acid-functional first polymer whereby the zeta potential of the dispersed pigment particle is less than ?28 mV between pH 5 and pH 8; and (b) performing an emulsion polymerization in the presence of the dispersed pigment particle to provide from 10% to 200%, by weight, based on the weight of the pigment particle, second polymer that at least partially encapsulates the dispersed pigment particle. Also provided are the encapsulated pigment particle so formed and compositions including the encapsulated pigment particle.Type: GrantFiled: May 18, 2010Date of Patent: November 6, 2012Assignee: Rohm and Haas CompanyInventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Martin Heuts
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Patent number: 8283404Abstract: An opacifying pigment that includes a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8 such as, for example TiO2, at least partially encapsulated in polymer is provided. Also provided are processes for forming the encapsulated pigment particle and compositions including the encapsulated pigment particle.Type: GrantFiled: May 18, 2010Date of Patent: October 9, 2012Assignee: Rohm and Haas CompanyInventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Karl A. Bromm
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Patent number: 8246869Abstract: Photoactivatable prepolymers and methods of use thereof are disclosed for microencapsulation of a substantially water-insoluble material within a nonporous shell. As provided herein, the microencapsulated material is released with no more than a slow release rate. Upon exposure of the nonporous shell to light, the nonporous shell is converted into a porous shell having an increased release rate for the microencapsulated material.Type: GrantFiled: October 30, 2006Date of Patent: August 21, 2012Assignee: Solarbre, Inc.Inventor: Michael H. B. Stowell
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Patent number: 8246868Abstract: A W/O emulsion is produced from an aqueous solution containing a substance to be entrapped in a vesicle in a dissolved or suspended state and an oil phase containing an emulsifier; subsequently, the W/O emulsion is cooled to a temperature at which the aqueous solution of the W/O emulsion becomes a frozen particle and the oil phase maintains a liquid state, and the oil phase is removed; thereafter, an oil phase containing a vesicle constituent lipid is added to the frozen particle, and the obtained mixture is then stirred, so as to substitute the emulsifier on the surface of the frozen particle with the vesicle constituent lipid; and thereafter, an external Water phase is added to the frozen particle coated with a lipid membrane, so as to hydrate the lipid membrane by the external water phase. This process achieves a high entrapment yield of a desired substance while controlling desired physical properties such as particle diameter.Type: GrantFiled: March 3, 2008Date of Patent: August 21, 2012Assignee: University of TsukubaInventors: Sosaku Ichikawa, Takashi Kuroiwa
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Patent number: 8216598Abstract: The present invention deals with an alternative interfacial polymerization process of microencapsulation, microcapsule's produced thereof, microencapsulated agrochemicals, pharmaceuticals, catalysts and phase transfer materials, and formulations thereof, by means of microcapsules and starting materials with much lower toxicological profile than customary microencapsulation materials, and with the participation of acetylene carbamide derivatives in the final structure of the microcapsules' wall.Type: GrantFiled: March 28, 2007Date of Patent: July 10, 2012Assignee: GAT Microencapsulation AGInventors: Victor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Patent number: 8206826Abstract: A production method for heat-expandable microspheres, which have high expanding ratio and are thermally expanded into hollow particulates having excellent repeated-compression durability, and application thereof are provided. The method produces heat-expandable microspheres a shell of thermoplastic resin and a blowing agent being encapsulated therein and having a boiling point not higher than the softening point of the thermoplastic resin.Type: GrantFiled: May 14, 2008Date of Patent: June 26, 2012Assignee: Matsumoto Yushi-Seiyaku Co., Ltd.Inventors: Hiroki Naito, Satoshi Kawanami, Katsushi Miki, Ikuo Yosejima, Kenichi Kitano
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Patent number: 8187696Abstract: A circuit substrate laminate, comprising a conductive metal layer; and a dielectric composite material having a dielectric constant of less than about 3.5 and a dissipation factor of less than about 0.006, wherein the dielectric composite material comprises: a polymer resin; and about 10 to about 70 volume percent of cenospheres having a ferric oxide content of less than or equal to 3 weight percent.Type: GrantFiled: July 17, 2009Date of Patent: May 29, 2012Assignee: World Properties, Inc.Inventors: Sankar K. Paul, Christopher J. Caisse, Dirk M. Baars, Allen F. Horn, III
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Publication number: 20120116012Abstract: Polymer-encapsulated pigment which includes a pigment core and a polymer shell, the shell being a polymerized polymer including hydrophobic monomers and acidic monomers, and also including a specific cross-linking agent.Type: ApplicationFiled: July 30, 2009Publication date: May 10, 2012Inventors: Sivapackia Ganapathiappan, Howard S. Tom, Laurie S. Mittelstadt
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Patent number: 8163207Abstract: The invention described herein relates to a method of preparing microcapsules comprising a capsule core, a polymeric capsule wall and also, disposed on the outer surface of the capsule wall, a polyelectrolyte having an average molecular weight in the range from 500 g/mol to 10 million g/mol, the polymeric capsule wall being formed from specified monomers, where the microcapsules have an average particle size of 1.5-2.5 ?m and 90% of the particles have a particle size ?4 ?m, by microencapsulating a capsule core with a polymeric capsule wall and then contacting the polymeric capsule wall with one or more polyelectrolytes in water or an aqueous medium.Type: GrantFiled: October 17, 2007Date of Patent: April 24, 2012Assignee: BASF AktiengesellschaftInventors: Marc Rudolf Jung, Dieter Niederberger, Hans Willax, Hans-Peter Hentze
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Patent number: 8137746Abstract: This invention is directed to a process for making solid, typically particulate, water-swellable material comprising coated water-swellable, preferably hydrogel-forming polymers, which are coated with a coating agent, which is such that it does not rupture when the polymers swell in a liquid, e.g., water or saline water. Hereto, the coating agent is extensible in wet state and comprises thereto a wet-extensible material that has a tensile stress at break in the wet state of at least 1 MPa. Typically, the coating agent comprises thereto an elastomeric polymeric material. The invention also relates to solid (particulate) water-swellable material obtainable by the process of the invention.Type: GrantFiled: August 5, 2004Date of Patent: March 20, 2012Assignee: The Procter & Gamble CompanyInventors: Mattias Schmidt, Axel Meyer, Renae Dianna Fossum, Bruno Johannes Ehrnsperger, Stephen Allen Goldman, Michael Divo, Edward Joseph Urankar
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Publication number: 20120053250Abstract: The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.Type: ApplicationFiled: February 9, 2010Publication date: March 1, 2012Applicant: SWETREE TECHNOLOGIES ABInventors: Christopher Carrick, Bert Pettersson, Lars Wågberg, Marcus Ruda
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Patent number: 8062703Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.Type: GrantFiled: August 11, 2010Date of Patent: November 22, 2011Assignee: Nanoco Technologies Ltd.Inventors: Paul O'Brien, Nigel Pickett
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Publication number: 20110200658Abstract: A process for making microcapsules comprising i) forming a solution of a cross-linker in a liquid; ii) forming a slurry of a surface-modified particulate inorganic material in an aqueous medium; and iii) dispersing the solution of step i) in the slurry of step ii) and causing or allowing the cross-linker to react with the surface-modified particulate inorganic material so as to form a cross-linked microcapsule wall.Type: ApplicationFiled: March 13, 2009Publication date: August 18, 2011Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Patrick Joseph Mulqueen, Philip Taylor, Gittins David lan
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Publication number: 20110184095Abstract: A light fast encapsulated pigment includes an inner core region that includes a pigment and an outer shell that includes a polymer comprising a UV absorber non-covalently incorporated therein. The light fast encapsulated pigment finds use in ink compositions.Type: ApplicationFiled: January 25, 2010Publication date: July 28, 2011Inventors: Howard S. Tom, Sivapackia Ganapathiappan, Doris Pik-Yiu Chun, Hou T. Ng
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Patent number: 7985446Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.Type: GrantFiled: August 11, 2010Date of Patent: July 26, 2011Assignee: Nanoco Technologies LimitedInventors: Paul O'Brien, Nigel Pickett
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Publication number: 20110159289Abstract: A method of encapsulating particulate materials that enables the particulate materials to be used in end use applications where they currently are not useful. The method uses specific sol gel technology to encapsulate solid particles. In addition, the method can be used to multiple coat a coated particle.Type: ApplicationFiled: December 24, 2010Publication date: June 30, 2011Inventor: John D. Blizzard
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Patent number: 7943353Abstract: A multi-layered microcapsule has an inner extracellular matrix and an outer shell. The inner extracellular matrix includes a first inner layer of biopolymer and a second intermediate layer of polymer that provides partial immune-protection and holds the first layer in place. The outer shell can form an exoskeleton to provide mechanical stability. Each of the individual layers can be varied to optimize mechanical stability, cell function, and immuno-protection.Type: GrantFiled: July 23, 2009Date of Patent: May 17, 2011Assignees: Agency for Science, Technology and Research, The National University of SingaporeInventors: Hanry Yu, Kam W Leong, Ser-Mien Chia, Andrew C. A. Wan
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Publication number: 20110052654Abstract: Various microencapsulated insecticide formulations for the control of pests such as aphids and beet army worm. These formulations exhibit excellent knockdown activity towards both chewing and non-chewing pests as LD50 values for toxicity in female rats in the range of about 2,500 mgKg?1. Some of these formulations include a wall comprised of a polymer formed, for example, by an interfacial polycondensation of a water soluble monomer and a water insoluble monomer, which at least partially surround an organophosphate insecticide. In some aspects the organophosphate in the microcapsule is chlorpyrifos. The microcapsule have a diameter in the range of about 2 to about 25 micron and the wall has a thickness in the range of about 5 to about 25 nanometers.Type: ApplicationFiled: March 1, 2010Publication date: March 3, 2011Applicant: DOW AGROSCIENCES LLCInventors: Stephen L. Wilson, Raymond E. Boucher, JR.
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CAPSULATED COLORANT, METHOD OF PREPARING THE SAME, INK COMPOSITION INCLUDING THE CAPSULATED COLORANT
Publication number: 20110046295Abstract: The present disclosure provides a capsulated colorant including a colorant and a polymer resin coating the colorant, wherein the polymer resin is obtained by polymerization of a polymerizable composition including a basic monomer, a macromonomer and a polymerizable unsaturated monomer; a method of preparing the capsulated colorant; and an ink composition including the capsulated colorant.Type: ApplicationFiled: March 2, 2010Publication date: February 24, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jong-In LEE, Sang-Eum Shim -
Patent number: 7892599Abstract: Methods for functionalizing the surface of nanomaterials to improve processing and product manufacturing. These methods are useful for oxides, nitrides, carbides, borides, metals, alloys, chalcogenides, and other compositions.Type: GrantFiled: July 27, 2004Date of Patent: February 22, 2011Assignee: PPG Industries Ohio, Inc.Inventors: Tapesh Yadav, Karl Pfaffenbach
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Publication number: 20110014471Abstract: The invention relates to solids powders comprising particles having an average particle size of 0.1 to 50 ?m with predominantly a core-shell structure, wherein the core comprises at least one water-insoluble fatty acid salt and the shell at least one anionic, cationic or non-ionic emulsifier, and the solids powder when introduced into water or at least one polar organic solvent or a mixture comprising water and at least one polar organic solvent, at a temperature of 23° C. while exposed to a mechanical force, forms a complete dispersion within 60 minutes or less.Type: ApplicationFiled: December 15, 2008Publication date: January 20, 2011Applicant: BAERLOCHER GMBHInventor: Juergen Hauk
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Patent number: 7863345Abstract: A process for producing a microparticulate hardening catalyst, comprising the steps of jetting a liquid composition containing epoxy resin hardening catalyst (A), monomer having an ethylenically unsaturated group (B) and photopolymerization initiator (C) through a minute nozzle into a gas so as to form microparticles; and while the microparticles are floating, irradiating the same with high-energy rays to thereby effect polymerization of the monomer having an ethylenically unsaturated group (B).Type: GrantFiled: July 6, 2006Date of Patent: January 4, 2011Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroo Koyanagi, Makoto Uchida, Shigeru Moteki
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Publication number: 20100298484Abstract: A process for forming an opacifying pigment encapsulated in polymer including (a) dispersing a pigment particle having an average particle diameter of from 150 to 500 nm and an index of refraction of at least 1.8 such as, for example, TiO2 in a medium with from 0.1% to 10% by weight, based on the weight of said pigment particle, sulfur acid-functional first polymer whereby the zeta potential of the dispersed pigment particle is less than ?28 mV between pH 5 and pH 8; and (b) performing an emulsion polymerization in the presence of the dispersed pigment particle to provide from 10% to 200%, by weight, based on the weight of the pigment particle, second polymer that at least partially encapsulates the dispersed pigment particle. Also provided are the encapsulated pigment particle so formed and compositions including the encapsulated pigment particle.Type: ApplicationFiled: May 18, 2010Publication date: November 25, 2010Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Martin Heuts
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Publication number: 20100298483Abstract: An opacifying pigment that includes a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8 such as, for example TiO2, at least partially encapsulated in polymer is provided. Also provided are processes for forming the encapsulated pigment particle and compositions including the encapsulated pigment particle.Type: ApplicationFiled: May 18, 2010Publication date: November 25, 2010Inventors: Nathan T. Allen, Andrew G. Batzell, Ward T. Brown, Karl A. Bromm
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Patent number: 7803423Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.Type: GrantFiled: April 27, 2005Date of Patent: September 28, 2010Assignee: Nanoco Technologies LimitedInventors: Paul O'Brien, Nigel Pickett
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Patent number: 7790225Abstract: Coatings and methods are provided. An embodiment of the coating includes microcapsules that contain at least one of a corrosion inhibitor, a film-forming compound, and an indicator. The microcapsules are dispersed in a coating vehicle. A shell of each microcapsule breaks down in the presence of an alkaline condition, resulting from corrosion.Type: GrantFiled: September 19, 2005Date of Patent: September 7, 2010Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Luz M. Calle, Wenyan Li
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Patent number: 7754655Abstract: The invention relates to novel microcapsule formulations of (A) a particulate disperse phase of microcapsules comprising (1) a polyurea and/or polyurethane coating with average layer thicknesses of between 5 and 20 nm, and (2) a capsule filling comprising at least one penetrant and, optionally, additives, and (B) a suspension comprising (1) at least one solid agrochemical active compound, (2) additives, (3) water, and (4) optionally, one or more agrochemical active compounds that are liquid at room temperature. The invention further relates to a process for the preparation of these microcapsule formulations and to their use for applying agrochemical active compounds.Type: GrantFiled: May 16, 2003Date of Patent: July 13, 2010Assignee: Bayer Cropscience AGInventors: Hilmar Wolf, Peter Baur, Manfred Zimmermann