Solid-walled Microcapsule Formed By In Situ Polymerization Patents (Class 264/4.7)
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Publication number: 20130043611Abstract: Provided are methods for encapsulating substances. In certain methods, the capsule walls are obtained by interfacial reaction, wherein the interfacial reaction is carried out in a centrifugal reactor with rotating packing.Type: ApplicationFiled: August 16, 2012Publication date: February 21, 2013Applicant: BASF SEInventors: Bernd Sachweh, Caroline Mages-Sauter, Robert Engel, Andreas Bauder, Sonja Judat, Christian Sowa
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Publication number: 20130034739Abstract: An enhanced thermal interface material (TIM) gap filler for filling a gap between two substrates (e.g., between a coldplate and an electronics module) includes microcapsules adapted to rupture in a magnetic field. The microcapsules, which are distributed in a TIM gap filler, each have a shell that encapsulates a solvent. One or more organosilane-coated magnetic nanoparticles is/are covalently bound into the shell of each microcapsule. In one embodiment, (3-aminopropyl) trimethylsilane-coated magnetite nanoparticles are incorporated into the shell of a urea-formaldehyde (UF) microcapsule during in situ polymerization. To enable easy removal of one substrate affixed to another substrate by the enhanced TIM gap filler, the substrates are positioned within a magnetic field sufficient to rupture the microcapsule shells through magnetic stimulation of the organosilane-coated magnetic nanoparticles.Type: ApplicationFiled: August 5, 2011Publication date: February 7, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dylan J. Boday, Joseph Kuczynski, Robert E. Meyer, III
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Patent number: 8349452Abstract: Microcapsules, comprising (A) in the range from 50 to 95 parts by weight, lipophilic core material which has a solid/liquid phase transition in the temperature range from ?20 to 120° C., (B) in the range from 4 to 50 parts by weight, capsule wall, and (C) in the range from 0.01 to 10 parts by weight, at least one colored or color-imparting substance selected from oil-soluble dyes and oil-soluble brighteners, where data in parts by weight are based on the total weight of the microcapsules in question.Type: GrantFiled: February 27, 2009Date of Patent: January 8, 2013Assignee: BASF SEInventors: Marc Rudolf Jung, Juergen Reichert
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Publication number: 20120309627Abstract: A microencapsulated formulation of pendimethalin comprising an alkali or an alkaline earth metal salt of an organic acid. Also described are processes for the preparation of the formulation and a method of controlling weeds at a locating by using the described formulation.Type: ApplicationFiled: January 31, 2011Publication date: December 6, 2012Applicant: United Phosphorus LimitedInventors: Jaidev Rajnikant Shroff, Vikram Rajnikant Shroff, Prakash Mahadev Jadhav, Christian Becker
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Patent number: 8318060Abstract: A system for microencapsulation of an amine in a polymer shell in an aqueous environment.Type: GrantFiled: July 21, 2009Date of Patent: November 27, 2012Assignee: University of New HampshireInventors: Donald C. Sundberg, John G. Tsavalas, Jonathan K. Nguyen
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Publication number: 20120286438Abstract: A continuous process for preparing microcapsules containing water-insoluble active principles, comprising: (1) preparing, in a first reactor, an aqueous solution containing one or more surfactants, (2) preparing, in a second reactor, a solution comprising at least an active principle immiscible in an aqueous phase and a first component for preparing a polycondensation polymer for forming the microcapsule shell, simultaneously feeding to a tubular reactor of a stream of aqueous solution (1) and solution (2), the ratio of solution (2)/solution (1) being between 0.5 and 2.0, inletting a stream (3) of a second component for preparing the polycondensation polymer into the reactor, wherein stream (3) reacts with the first component, wherein the streams are under turbulent flow conditions in the tubular reactor, and are continuously fed to the tubular reactor, and wherein the ratio between the equivalents of the first component and second component are between 0.9 and 1.1.Type: ApplicationFiled: May 4, 2012Publication date: November 15, 2012Applicant: SIPCAM S.P.A.Inventors: Marco BERNARDINI, Francesca BORGO, Giorgio FRESCHI, Edoardo RUSSO
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Publication number: 20120245027Abstract: 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: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Inventors: Victor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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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: 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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Publication number: 20120201874Abstract: A liposome comprising bilayer and inner water phase is disclosed. Said inner water phase contains sulfobutyl ether cyclodextrin and active compound. Said sulfobutyl ether cyclodextrin is sulfobutyl ether ?-cyclodextrin, sulfobutyl ether ?-cyclodextrin, or sulfobutyl ether ?-cyclodextrin.Type: ApplicationFiled: October 26, 2010Publication date: August 9, 2012Applicant: CSPC ZHONGQI PHARMACEUTICAL TECHNOLOGY (SHINJIAZHUANG) CO., LTD.Inventors: Chunlei Li, Lan Zhang, Caixia Wang, Li Zhang, Dongmin Shen, Yanhui Li, Xian Xiu, Min Liang, Yongfeng Li
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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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Publication number: 20120157315Abstract: The present invention consists in microcapsules, uses and method of microencapsulation with improved properties regarding agglomeration, bleeding and control of the reaction. The invention is especially suitable for chemical compounds with at least one carboxamide group, preferably for microencapsulation of those compounds wherein the carbonyl group is attached to a nitrogen atom or nitrogenated heterocycle and wherein the microencapsulation reaction may be too vigorous.Type: ApplicationFiled: April 30, 2009Publication date: June 21, 2012Inventors: Victor Casana Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Publication number: 20120125842Abstract: The invention relates to a microfluidic system including a unit for extracting elements from one liquid phase to at least one other liquid phase, a use of said system for performing said extraction, preferably for gelling polymer capsules coating such elements by cross-linking, and a method for extracting said elements. Said system comprises a substrate in which a network of micro-channels is etched, including a unit (10) for extracting elements (E), including: a depleting micro-channel (11) which carries a first phase (A) to be depleted; at least one enriching channel (12) which carries a second phase (B) to be enriched, said micro-channels meeting at two junctions upstream (Ja) and downstream (Jb) and forming a transfer chamber (13) between said junctions, each junction being such that the micro-channels are axially parallel or form an acute angle on either side of the junction; and a transfer means (14) arranged in the depleting micro-channel for diverting the elements towards the enriching micro-channel.Type: ApplicationFiled: June 18, 2010Publication date: May 24, 2012Applicant: Commissariat A L'Energie Atomique Et Aux Energies AlternativesInventors: Jean Berthier, Sophie Le Vot, Florence Rivera
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Publication number: 20120123012Abstract: The present invention relates to microcapsules composed of a shell of polymers and of a core comprising photoinitiators which exhibit acylphosphine oxides, their derivatives or amine coinitiators or mixtures of these compounds, and also to the preparation of these microcapsules and to their use for dental materials.Type: ApplicationFiled: October 23, 2007Publication date: May 17, 2012Inventors: Volker Rheinberger, Ulrich Salz, Jörg Zimmermann, Katharina Landfester, Ulrich Ziener, Marissa Volz
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Patent number: 8178275Abstract: The present invention provides a method for producing a toner that can suppress the production of the decomposition products derived from a polymerization initiator, and can suppress the remaining presence, in the toner particles, of the unreacted polymerizable monomer and decomposition product residues. On the basis of this method, the present invention provides a toner that is excellent in triboelectric charging stability and can yield stable images over a long term.Type: GrantFiled: May 16, 2008Date of Patent: May 15, 2012Assignee: Canon Kabushiki KaishaInventors: Atsushi Tani, Norikazu Fujimoto, Hitoshi Itabashi
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Publication number: 20120112122Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule wall, where the capsule wall is constructed from 50 to 90% by weight of one or more C1-C24-alkyl esters of acrylic acid and/or methacrylic acid (monomers I), 10 to 50% by weight of one or more polyvinyl monomers (monomers II), and 0 to 30% by weight of one or more monounsaturated, nonionizable monomers (monomer III), which are different from the monomers I in each case based on the total weight of the monomers, to a process for their preparation, and to their use in binding construction materials, textiles and heat transfer liquids.Type: ApplicationFiled: July 9, 2010Publication date: May 10, 2012Applicant: BASF SEInventors: Marc Rudolf Jung, Tobias Joachim Koplin, Stephan Altmann, Bogdan Moraru, Marco Schmidt, Tina Schroeder-Grimonpont, Hans Willax, Britta Katz
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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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Publication number: 20120093899Abstract: The present invention is directed to a process for preparing a capsule product through the increase in the polymerization cure temperature and cure time during the capsule-making process. The microcapsule products prepared according the process of the present invention exhibit enhanced retention of active materials in consumer products which promote instability.Type: ApplicationFiled: April 12, 2011Publication date: April 19, 2012Inventors: Lewis Michael Popplewell, Johan Gerwin Lodewijk Pluyter, Naijie Zhang
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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: 8110284Abstract: The invention relates to microcapsules having a core material encapsulated within a microcapsular shell, the core material comprises at least one active ingredient, wherein the microcapsular shell comprises at least one inorganic polymer comprising polymerized precursors obtained by in-situ polymerization of the precursors; wherein the concentration of the core material based total weight of the microcapsules is above 95% w/w. The invention further relates to a composition and to a suspension comprising the microcapsules. The invention additionally relates to a process for preparing the microcapsules.Type: GrantFiled: August 1, 2004Date of Patent: February 7, 2012Assignee: Sol-Gel Technologies Ltd.Inventors: Oleg Naigertsik, Sorel Rothschild, Claudio Rottman
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Publication number: 20120027824Abstract: Surfactant system capable of forming a dispersion of vesicles or liposomes constituted of alkyl polyglycoside of formula RO(X)n, in which R is a linear or branched alkyl chain, with or without unsaturation, and having 8 to 12 carbon atoms, X being a pentose residue, and n, representing the average degree of oligomerization, is between 1 and 3, and of a hydrotrope or co-solvent.Type: ApplicationFiled: April 21, 2011Publication date: February 2, 2012Inventors: Cédric Ernenwein, Jean-François Tranchant, Thierry Pouget, Boris Estrine, Sinisa Marinkovic
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Patent number: 8071214Abstract: The invention discloses a population of selected permeability microcapsule particles comprising an oil soluble or dispersible core material and a wall material at least partially surrounding the core material. The microcapsule wall material comprises the reaction product of a first composition in the presence of a second composition comprising an anionic emulsifier. The first composition comprises a reaction product of i) an oil soluble or dispersible amine with ii) a multifunctional acrylate or methacrylate monomer or oligomer, an oil soluble acid and an initiator. The anionic emulsifier comprises a water soluble or water dispersible acrylic acid alkyl acid copolymer, an optional initiator and an alkali or alkali salt. The reaction product of the first composition and second composition can result in the formation of a low permeability microcapsule wall. Optionally, one or both of the first composition initiator or water phase initiator is an energy-activated initiator, such as a UV initiator.Type: GrantFiled: August 6, 2008Date of Patent: December 6, 2011Assignee: Appleton Papers Inc.Inventor: Todd Arlin Schwantes
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Publication number: 20110293677Abstract: A fabric, fibre, hair or skin conditioning additive for use in a liquid cleaning product is encapsulated within a shell comprising a silicon-containing polymer network.Type: ApplicationFiled: October 15, 2009Publication date: December 1, 2011Inventors: Thomas Bekemeier, Lorry Deklippel, Tatiana Dimitrova, Russell Elms, Fabrizio Galeone, Bertrand Lenoble, Leon Marteaux, Josef Roidl, Martin Severance, Stephane Ugazio, Brett Zimmerman
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Patent number: 8039015Abstract: Microcapsules possessing Lewis acid-Lewis base salt walls incorporate water-immiscible materials, such as N,N-diethyl-m-toluamide (DEET), as a core component. Such microcapsules, or similar microcapsules incorporating other core components, may be made by emulsifying a water-immiscible core component in an aqueous solution of one wall-forming reactant, such as the Lewis base, and then mixing that solution with the other wall-forming reactant, such as the Lewis acid. Various adjuvants may be included with the core component to contribute additional characteristics, such as enhancement of a controlled release characteristic or improved mechanical stability.Type: GrantFiled: December 7, 2005Date of Patent: October 18, 2011Inventor: Tycho J. Speaker
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Patent number: 8038885Abstract: Disclosed herein are compositions, methods, and devices related to bilayer and monolayer membranes, their encapsulation in a hydrogel, and their formation. Methods of using the disclose compositions and devices are also disclosed.Type: GrantFiled: October 13, 2006Date of Patent: October 18, 2011Assignee: The Regents of the University of CaliforniaInventors: Jacob J. Schmidt, Noah Malmstadt, Tae-joon Jeon, Jason Poulos
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Publication number: 20110240931Abstract: A nanoparticle-resin composition includes a nanoparticle, a silicone resin having a reactive functional group at its terminal end, and a compound selected from a silane group-containing compound, a silazane compound, or a combination including at least one of the foregoing. In addition, a nanoparticle-resin composite includes a silicone resin matrix including the cure product of a silicone resin having a reactive functional group at its terminal end, a plurality of nanoparticle clusters dispersed in the silicone resin matrix, and a buffer layer encapsulating the nanoparticle cluster. The buffer layer includes a compound selected from a silane group-containing compound, a silazane compound, or a combination including at least one of the foregoing compounds.Type: ApplicationFiled: December 28, 2010Publication date: October 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Eun-Joo JANG, Shin-Ae JUN, Seok-Hwan HONG, Jin-Young BAE
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Patent number: 8017047Abstract: Microcapsules wherein the capsule wall is formed from an organic polymer (capsule wall polymer for short) and the core of the microcapsules comprises compounds containing carbodiimide groups (carbodiimide compound for short).Type: GrantFiled: December 11, 2007Date of Patent: September 13, 2011Assignee: BASF SEInventors: Andre Burghardt, Maria Teresa Hechavarria Fonseca, Karl Haeberle, Oliver Hartz, Marc Rudolf Jung, Karl-Heinz Schumacher, Denise du Fresne von Hohenesche, Hans-Peter Hentze
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Publication number: 20110206751Abstract: The invention relates to a polymer vesicle with an asymmetrical unilamellar membrane, said membrane being constituted by two distinct layers, a layer (A) and a layer (B), said layers comprising respective amphiphilic block copolymers with layer (A) comprising, in contrast to said layer (B), an effective quantity of amphiphilic block copolymer comprising at least one stimulatable hydrophobic polymer block, said block polymers provided by said copolymers being capable of adopting a new steric configuration in response to an exogenous stimulus, conditioning the rupture of said unilamellar membrane. The invention also provides a method of producing said vesicle, a method of encapsulating an active ingredient in said vesicles, and a method of controlled release of the active ingredient.Type: ApplicationFiled: September 15, 2009Publication date: August 25, 2011Applicants: INSTITUT CURIE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PIERRE ET MARIE CURIEInventors: Min-Hui Li, Elyes Mabrouk, Damien Cuvelier, Pierre Nassoy, Françoise Brochard-Wyart
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Publication number: 20110177340Abstract: A method is disclosed. The method includes obtaining a precursor nanoparticle comprising a base material and a first ligand attached to the base material, and reacting the precursor nanoparticle with a reactant comprising a silicon bond, thereby removing the first ligand.Type: ApplicationFiled: July 27, 2009Publication date: July 21, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: A. Paul Alivisatos, Jonathan Owen
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Publication number: 20110147961Abstract: A process of forming a population of microcapsules is described comprising a liquid hydrophilic core material and a wall material at least partially surrounding the core material. The liquid hydrophilic core material can be anionic, cationic, or neutral but polar. The microcapsule population is formed by providing liquid hydrophilic core material; providing an oil continuous phase which is low boiling and preferably nonflammable, the oil continuous phase comprising preferably one or more organic oil materials such as esters with chain length up to about 42 carbons. A mixture is formed by dispersing the liquid hydrophilic material in the oil continuous phase. Either an oil soluble or dispersible monofunctional amine acrylate or monofunctional amine methacrylate, along with acid; or alternatively monofunctional acid acrylate or monofunctional acid methacrylate along with base; or alternatively, monofunctional amine acrylate or monofunctional amine methacrylate along with acid acrylate or methacrylate; is added.Type: ApplicationFiled: December 20, 2010Publication date: June 23, 2011Applicant: Appleton Papers Inc.Inventor: Todd Arlin Schwantes
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Patent number: 7943067Abstract: The present invention includes a method for preparing polymer hydrogel spherical particles on a nanometer scale (nanogels). The method includes encapsulating hydrogel-forming components into liposomes, diluting the large unilamellar liposomes suspension to prevent polymerization outside the liposomes, and polymerizing the encapsulated hydrogel-forming components. The lipid bilayer may be solubilized with detergent. The phospholipid and detergent molecules and their micelles may then be removed by dialysis. The resulting nanogels may then be dried by evaporation in a temperature gradient. Poly(acrylamide), poly(N-isopropylacrylamide), and poly(N-isopropylacrylamide-co-1-vinylimidazole) hydrogel particles with a diameter from 30 to 300 nm were detected and characterized by dynamic light scattering technique. The solvent, temperature, pH, and ionic sensitivities of the nanogels were studied.Type: GrantFiled: August 14, 2002Date of Patent: May 17, 2011Assignee: Polytechnic Institute of New York UniversityInventors: Sergey Kazakov, Marian Kaholek, Kalle Levon
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Publication number: 20110085995Abstract: A self-stabilizing dispersion composition having a copolymer having at least one polymerizable acid-containing moiety, wherein the at least one acid-containing moiety is at least partially neutralized before or during polymerization, and at least one hydrophobic moiety. A process for producing such compositions is also provided, as well as a process for encapsulating water-insoluble actives in such copolymers.Type: ApplicationFiled: December 20, 2010Publication date: April 14, 2011Applicant: AKZO NOBEL N.V.Inventors: Klein A. Rodrigues, Darin K. Griffith
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Publication number: 20110077375Abstract: Functionalized particles having fully formed shells and cores comprising a polyurethane or polyurea matrix obtained by interfacial addition polymerisation of (i) at least one polyisocyanate derivative selected from the group of partially blocked polyisocyanates and polyisocyanates partially modified with fiber reactive groups and (ii) at least one polyamine or polyhydric alcohol, said functionalized particles being capable to chemically or physically bind to a substrate.Type: ApplicationFiled: July 25, 2005Publication date: March 31, 2011Inventors: Torsten Kulke, Gunnar Engelmann, Gerald Rafler
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Publication number: 20110071064Abstract: The invention relates to products for washing and cleaning and/or care and protection of animate or inanimate surfaces that comprise micro-encapsulated benefit agents. The invention also relates to polyurethane and polyurea microcapsules.Type: ApplicationFiled: September 18, 2009Publication date: March 24, 2011Inventors: Yabin Lei, Lewis Michael Popplewell, Carol A. Joyce, Xihua Lu, Jeffrey James McElwee
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Publication number: 20110033513Abstract: The present invention is directed to novel capsules containing active material and nanoscaled material and to methods for making capsules with enhanced performance and stability. The capsules are well suited for use in personal care applications, laundry products and perfume and fragrance products.Type: ApplicationFiled: October 21, 2010Publication date: February 10, 2011Inventors: Yabin Lei, Lewis Michael Popplewell, Carol Joyce
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Patent number: 7883648Abstract: Lipobeads (liposome-encapsulated hydrogels) combine properties of hydrogels and liposomes to create systems that are sensitive to environmental conditions and respond to changes in those conditions in a fast time scale. Lipobeads may be produced by polymerizing anchored or unanchored hydrogels within liposomes or by mixing anchored or unanchored hydrogels with liposomes. Giant lipobeads may be produced by shrinking unanchored nanogels in lipobeads and fusing the resulting lipobead aggregates, long-term aging of anchored or unanchored lipobeads, or mixing anchored or unanchored aggregated nanogels with liposomes. Poly(acrylamide), poly(N-isopropylacrylamide), and poly(N-isopropylacrylamide-co-1-vinylimidazole) lipobeads were produced and characterized.Type: GrantFiled: November 16, 2009Date of Patent: February 8, 2011Assignee: Polytechnic Institute of New York UniversityInventors: Sergey Kazakov, Marian Kaholek, Kalle Levon
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Publication number: 20110017944Abstract: The invention relates to a method for producing an inorganic latent heat storage material that is surrounded by an encapsulating layer that is made of an inorganic-organic polymer material that comprises a metal and/or semi-metal oxygen network with embedded organic groups. The method is characterised in that a liquid or liquefied latent heat storage material, in the form of discrete units that are to be, respectively, encapsulated, is introduced into a liquid or viscous precursor material of the encapsulating material such that the encapsulating material solidifies when coming into contact with the outer surfaces of said latent heat storage material.Type: ApplicationFiled: March 13, 2009Publication date: January 27, 2011Applicant: UNIVERSITAET WUERZBURGInventors: Ruth Houbertz-Krauss, Gerhard Sextl, Uta Helbig, Daniela Platte, Anu Punnoose
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Publication number: 20110015115Abstract: A microcapsule which is able to stably retain a benefit agent such as a volatile substance for an extended period, and which is also suitable for encapsulating fragrances and the like. Such capsule encapsulates a mixture comprising a volatile substance, and an additive that has a higher melting point than the volatile substance and is able to undergo mutual dissolution with the volatile substance, wherein the mixture exhibits a melting point range, and a portion of, or all of, that melting point range falls within a range from ?20 to 60° C. The present invention also relates to consumer products including cleaning and/or treatment compositions comprising such microcapsules, and processes of making and using same.Type: ApplicationFiled: September 27, 2010Publication date: January 20, 2011Applicant: CHEMITECH INC.,Inventors: Johan Smets, Radhakrishnan Janardanan Nair, An Pintens, Takuya Yasuhara, Takashi Iwasaki
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Publication number: 20110003152Abstract: A microcapsule comprising A) a core containing a hydrophobic liquid or wax, B) a polymeric shell comprising a) a polymer formed from a monomer mixture containing: i) 1 to 95% by weight of a hydrophobic mono functional ethylenically unsaturated monomer, ii) 5 to 99% by weight of a polyfunctional ethylenically unsaturated monomer, and iii) 0 to 60% by weight of other mono functional monomer, and b) a further hydrophobic polymer which is insoluble in the hydrophobic liquid or wax. The invention includes a process for the manufacture of particles and the use of particles in articles, such as fabrics, and coating compositions, especially for textiles.Type: ApplicationFiled: November 6, 2007Publication date: January 6, 2011Applicant: Ciba Holding Inc.Inventor: Bryan David Grey
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Patent number: 7833578Abstract: A composition and a method for fabricating microcapsules encapsulating phase-change material by interfacial condensation polymerization are provided. In this composition and method, a surfactant and an organic solvent are not needed.Type: GrantFiled: March 12, 2008Date of Patent: November 16, 2010Assignee: Taiwan Textile Research InstituteInventors: Yen-Hsi Lin, Chi-Shu Wei
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Publication number: 20100258964Abstract: A technique for shaping droplets is disclosed. Multiple optical traps, or at least one variable geometry trap, are used to deform a droplet. The surface tension of the droplet is lowered to be comparable with the force which can be applied using the optical traps, for example by using a surfactant such as Aerosol OT, with heptane droplets in a solution of sodium chloride. Solidification of deformed droplets can be achieved using polymerization.Type: ApplicationFiled: January 25, 2007Publication date: October 14, 2010Inventors: Andrew David Ward, Colin David Bain, Christopher Daniel Mellor
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Patent number: 7807076Abstract: An improved process for the preparation of microcapsules consisting essentially of a wall material and a core material in condensing a melamine-formaldehyde precondensate and/or methyl ethers thereof in an aqueous dispersion of a water-insoluble core material and in the presence of an acrylic acid/acrylamide copolymer at acidic pH and at a temperature in the range of from 20° to 100° C., and hardening thereafter the melamine-formaldehyde precondensate to form the walls of the microcapsules at an elevated temperature, wherein the core material is dispersed in the precondensate/copolymer solution without initial partial condensation of the precondensate and copolymer and wherein the hydrophobe point of the precondensate and/or its methyl esters is less than 90° C., as well as microcapsules, paper and pressure-sensitive recording material comprising such microcapsules.Type: GrantFiled: October 17, 2002Date of Patent: October 5, 2010Assignee: Ciba Specialty Chemicals Corp.Inventors: Ann Hunt, Robert Montgomery O'Neil
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Publication number: 20100180995Abstract: In heat-expandable microspheres as a starting material for hollow fine particles, which have excellent performances required for giving not only a durability in steady running region but also a durability in high-speed running region to a tire-rim assembly, and each consisting of an outer shell made of a thermoplastic resin obtained by polymerizing a monomer component in the presence of a polymerization initiator, and a foaming agent encapsulated in the outer shell and having a boiling point not higher than a softening point of the thermoplastic resin, the polymerization initiator comprises a peroxydicarbonate as an essential component, and the foaming agent comprises a fluorine-containing compound having an ether structure and a carbon number of 2-10 and containing no chlorine atom and bromine atom.Type: ApplicationFiled: October 24, 2006Publication date: July 22, 2010Inventors: Hiroyuki Teratani, Toshiaki Masuda, Kenichi Kitano, Katsushi Miki, Takayuki Aoki, Takeshi Inohara
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Publication number: 20100143421Abstract: A process for the production of water-containing silicone rubber device comprising the steps of mixing an external phase comprising an organopolysiloxane polymer having at least two reactive groups per molecule, a water in oil emulsifier and where required one or more active ingredients and/or optional additives; with an internal phase comprising water and optionally one or more active ingredients to form an emulsion; and subsequently introducing a cure package comprising a cure package comprising a suitable catalyst, which will be determined by the cure reaction between the polymer and where required a cross-linker, and which contains more than two reactive groups, designed to react with the reactive groups in the polymer in the presence of said catalyst in order to cure the external phase of the composition, thereby entrapping the water within the body of said water-containing silicone rubber device.Type: ApplicationFiled: April 10, 2007Publication date: June 10, 2010Inventors: Isabelle Van Reeth, Virginie Caprasse, Xavier Thomas, Jean-Paul Lecomte, Benedicte Courel, Esternia Schirosi
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Publication number: 20100143422Abstract: The present invention relates to a microcapsule particle composition that is composed of a sol-gel material. The microcapsule particle composition is well suited for personal care and cleaning products.Type: ApplicationFiled: December 4, 2008Publication date: June 10, 2010Inventors: Lewis Michael Popplewell, Yabin Lei, Renee Lynn Guerry, Xiao Huang, Andrea Noel Kroenig, Jeffrey James McElwee
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Publication number: 20100127415Abstract: Provided are a method for forming polyurea microcapsules containing a saturated alcohol as a dispersion medium, and microcapsules prepared using the method. According to the method, suspensions, in which microcapsules are dispersed in a saturated alcohol dispersion medium as a core material, may be used to prepare microcapsules. Diverse and fine color expression may be obtained from various response characteristics in the display applications. In addition to superior processibility, excellent thermal stability, solvent resistance, and chemical stability may be achieved by using polyurea in microcapsules as a wall material according to one embodiment of the present invention.Type: ApplicationFiled: June 30, 2009Publication date: May 27, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chul-Am Kim, In-Kyu You, Kyung-Soo Suh, Seung-Youl Kang, Ji-Eun Jung, Ji-Young Oh
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Patent number: 7722940Abstract: Stock packaging materials for manual and/or high speed industrial automated package formation and/or filing and closing applications having a curable pre-applied adhesive compositions applied to one or more seams or closure surfaces wherein the curative for the pre-applied adhesive composition is contained within a carrier which prevents its premature release.Type: GrantFiled: February 28, 2006Date of Patent: May 25, 2010Assignee: Appleton Papers, Inc.Inventors: Todd Arlin Schwantes, Michael Curley Krzoska, Gregory Stephen Kulibert, Adam Gregg Malofsky, Bernard Miles Malofsky, Nagib Maurice Ward
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Patent number: 7723086Abstract: An apparatus for encapsulating cells is disclosed. According to one embodiment, the apparatus includes an indirect-pumping dispenser for dispensing a cell suspension into an encapsulation solution through an outlet of the dispenser. The apparatus also includes a dipping mechanism that is attachable to the outlet of the dispenser. The dipping mechanism is adapted to dip the dispenser outlet in the encapsulation solution to allow the cell suspension dispensed thereat to come into contact with the encapsulation solution.Type: GrantFiled: June 16, 2004Date of Patent: May 25, 2010Assignee: Agency for Science, Technology + ResearchInventors: Hanry Yu, Hai Ting Ho, Jing Zhang
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Patent number: 7722939Abstract: Stock materials for manual and/or high speed industrial automated bonding applications having a curable pre-applied adhesive or sealant compositions on the bonding surfaces wherein the curative for the pre-applied adhesive or sealant composition is contained within a carrier which prevents its premature release.Type: GrantFiled: February 28, 2006Date of Patent: May 25, 2010Assignee: Appleton Papers, Inc.Inventors: Todd Arlin Schwantes, Michael Curley Krzoska, Gregory Stephen Kulibert, Adam Gregg Malofsky, Bernard Miles Malofsky, Nagib Maurice Ward
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Patent number: 7662444Abstract: A liquid crystal microcapsule, comprising a liquid crystal and a polyurea film encapsulating the liquid crystal, wherein at least one of an alkyl group and a fluoroalkyl group is bonded directly or indirectly via a urethane bond to the polyurea. A method of producing a liquid crystal microcapsule, comprising: forming a polyurea and the film thereof by allowing an aligner, which is a compound having a hydroxyl group and at least one of an alkyl group and a fluoroalkyl group, to react with a polyisocyanate, a polyamine, and water; and encapsulating a liquid crystal with the film. A liquid crystal display device using the liquid crystal microcapsule.Type: GrantFiled: July 13, 2005Date of Patent: February 16, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Shigeru Yamamoto