Polyvinyl Alcohol Patents (Class 525/56)
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Patent number: 7915341Abstract: An ethylene-vinyl alcohol copolymer and a molded article thereof are disclosed. The ethylene-vinyl alcohol copolymer has improved stretching properties and provides the molded article with excellent gas barrier properties, appearance and strength. The ethylene-vinyl alcohol copolymer comprises the structural unit of formula (1): (wherein X represents any binding chain excluding an ether bond, each of R1 to R4 represents independently any substituent and n represents 0 or 1.).Type: GrantFiled: December 17, 2004Date of Patent: March 29, 2011Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Mitsuo Shibutani, Takamasa Moriyama, Kaoru Inoue, Shinta Miyazumi, Ikko Matsui
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Publication number: 20110071495Abstract: An embolization system having a high packing fraction of embolic particles for use in occluding the flow of body fluid through a body vessel and a method for using such an embolization system are described. The embolic particles, which are made from a shape memory material, exhibit both a collapsed state and an expanded state. The embolic particles exhibit at least a bimodal particle diameter distribution in the collapsed state and expanded state with a particle packing fraction of at least about 0.85. The mixture of embolic particles is delivered into the body vessel in the collapsed state. The particle packing fraction of the mixture in its expanded state causes the occlusion of the flow of body fluid through the body vessel.Type: ApplicationFiled: September 21, 2009Publication date: March 24, 2011Applicant: Cook IncorporatedInventor: Kurt J. Tekulve
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Publication number: 20110064918Abstract: A novel sizing-adhesive composition for corrugating characterised in that it comprises at least one low molecular weight, water soluble polymer such as a maltodextrin, corrugating boards prepared therewith and methods of producing them.Type: ApplicationFiled: July 19, 2010Publication date: March 17, 2011Applicant: CARGILL, INCORPORATEDInventors: Freddy Johannes Martina ANDRIESSEN, Leonard JANNUSCH, Peter OBRADOVIC-SANDMANN
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Patent number: 7888430Abstract: The modifying powder is silk powder having an average particle diameter of 10 ?m or less, oil absorption of 130 ml/100 g or less and particle diameter of 80 ?m or less on the basis of dispersion degree evaluation with a grind gauge according to JIS K5400; or polysaccharide powder having an average particle diameter of 10 ?m or less, and ink viscosity of less than 15 Pa·s or oil absorption of 85 ml/100 g or less. Such modifying powders can be obtained through a method comprising a first pulverization process for pulverizing a starting material for modifying material using a dry-type mechanical pulverizer such as a ball mill, and a second pulverization process for pulverizing the obtained pulverized product with a jet mill to fine particles having an average particle diameter of 10 ?m or less, wherein pulverization treatment time in the first pulverization process is determined to be 40 hours or more.Type: GrantFiled: August 3, 2005Date of Patent: February 15, 2011Assignee: Idemitsu Technofine Co., Ltd.Inventor: Shigeru Oyama
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Patent number: 7884157Abstract: The invention concerns a process for preparing a block or comb copolymer comprising at least one hydrophilic portion and at least two hydrophobic portions, by anionic solvent-free polymerization of a prepolymer selected from a polyethylene glycol and a polyvinyl alcohol, and of a lactone or dilactone monomer. The process is carried out in the presence of an alkaline-earth metal hydride, in an inert atmosphere, and the polymerization step is not carried out under vacuum. The invention also concerns copolymers obtained by this process.Type: GrantFiled: November 28, 2006Date of Patent: February 8, 2011Assignees: Centre National de la Recherche Scientifique, Universite Montpellier 2 Sciences et TechniquesInventors: André Mas, Nadia Guerrouani, François Schue
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Patent number: 7875353Abstract: Multilayered pellets are provided that contain an ethylene-vinyl alcohol copolymer (EVOH) and a polyamide resin and that have excellent thermal stability during pelletizing and melt molding. The multilayered pellets each are composed of at least two resin layers and include a resin layer A whose main component is EVOH and a resin layer B whose main component is a polyamide resin. In the multilayered pellets, at least 70 mol % of all the terminals of the polyamide resin are blocked by units each containing an imide structure.Type: GrantFiled: September 2, 2005Date of Patent: January 25, 2011Assignee: Kuraray Co., LtdInventor: Syukiti Kawamura
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Publication number: 20110009022Abstract: A fire retardant fabric or garment comprising: a fabric or garment and a fire retardant composition including a polyvinyl alcohol copolymer, a vinyl acetate copolymer an acrylic emulsion, and vinyl acrylic emulsion or a combination thereof.Type: ApplicationFiled: April 15, 2010Publication date: January 13, 2011Inventors: Harrie P. Schoots, Dalia I. Eicken, Vinh V. Nguyen, Arnold Ybarra
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Publication number: 20100326597Abstract: The invention relates to a hardener composition for use in an amino resin based adhesive system, comprising an aliphatic alpha hydroxy-mono-, or di-, carboxylic acid, and polyvinyl alcohol. It also relates to an adhesive system and a method of gluing wooden materials.Type: ApplicationFiled: June 27, 2008Publication date: December 30, 2010Inventors: Hans Ekblom, Sara Faldt, Ingvar Lindh, Benyahia Nasli-Bakir
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Patent number: 7854994Abstract: A barrier composition which is injection mouldable and able to be made into a transparent film or incorporated (by co-extrusion and/or lamination) into multi-layer film products, the composition on dry basis: a) from 45 to 90% by weight of a starch and/or a modified starch selected from starches modified by reaction with a hydroxyl alkyl group, an acetate or a dicarboxylic acid anhydride or a grafting polymer; b) from 4 to 12% by weight of a water soluble polymer selected from polyvinyl alcohol, polyvinylacetate, and copolymers of ethylene and vinylalcohol which have a melting point compatible with the molten state of the starch components c) from 5 to 45% by weight of a non-crystallising mixture of sorbitol and at least one other plasticizer selected from glycerol, maltitol, xylitol, mannitol, glycerol trioleate, epoxidised linseed or soybean oil, tributyl citrate, acetyl tri-ethyl citrate, glyceryl triacetate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate; polyethylene oxide or polyethylene glycol; d) fromType: GrantFiled: October 18, 2005Date of Patent: December 21, 2010Assignee: Plantic Technologies Ltd.Inventors: Rulande Henderson-Rutgers, Mark Fink, Nicholas Roy Oakley
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Patent number: 7851551Abstract: Disclosed is a process for the preparation of poly(vinylbenzyl alcohol) by, for example the hydrolysis of poly(vinylbenzyl acetate) in the presence of a basic catalyst in an organic solvent.Type: GrantFiled: March 25, 2004Date of Patent: December 14, 2010Assignee: Xerox CorporationInventors: Timothy J. Fuller, Damodar M. Pai, John F. Yanus, Markus R. Silvestri, Kenny-Tuan T Dinh, Yuhua Tong
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Publication number: 20100311638Abstract: A process for altering the shape of a polymer particle is disclosed. The process comprises suspending polymer particles in a suspending medium at a temperature that effects melting of the polymer and agitating the suspension for a time sufficient to change the shape of the particles. The shape altered particles are combined with a pharmaceutically acceptable agent to give a drug delivery particle system.Type: ApplicationFiled: October 27, 2006Publication date: December 9, 2010Inventor: Paul Tiege
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Patent number: 7847027Abstract: The present invention discloses a method of making core-shell polymer particles, comprising forming a linking-group-containing polymer by derivatizing a hydroxy-group-containing polymer, comprising hydroxy groups on adjacent carbon atoms with a linking agent, that is a compound comprising both an aldehyde moiety and an amine moiety, wherein one or more acetal moieties are formed in the linking-group-containing polymer, each acetal formed by the reaction of the aldehyde moiety in the linking agent with two hydroxy groups in the linking-group-containing polymer, wherein the amine moiety then becomes a linking group pendent from the linking-group-containing polymer, wherein the linking group is capable of reacting with a precursor group in the precursor polymer. Also disclosed are compositions comprising insoluble core-shell particles made by the method.Type: GrantFiled: December 29, 2006Date of Patent: December 7, 2010Assignee: Eastman Kodak CompanyInventors: Peter J. Ghyzel, Joseph F. Bringley, David J. Giacherio, Lawrence P. DeMejo, Terry C. Schultz, Todd Emrick
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Patent number: 7842391Abstract: Gas barrier layers and composites contain a low gel sheet produced from a composition containing a thermoplastic polyurethane (TPU), a hydroxyl functional copolymer, and a gel reducing additive. The gel reducing additive has functional groups that can react with isocyanate groups to reduce gel formation during the processing of blends of urethane containing polymers and hydroxyl functional polymers. Multilayer composites containing the low gel sheets can be made into inflatable membranes for containing an inflationary gas. In a particularly preferred embodiment, the membranes are used as bladders of cushioning devices in the soles of shoes, particularly athletic shoes.Type: GrantFiled: August 12, 2009Date of Patent: November 30, 2010Assignee: Nike, Inc.Inventors: Richard L Watkins, Yihua Chang
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Patent number: 7838597Abstract: A fluid loss additive for hydraulic cement, comprising a polyvinyl alcohol resin and a fluid loss ameliorating sulfonic acid-functionalized co-resin, where the polyvinyl alcohol has a characteristic viscosity in the range of about 1 to about 25 cps. The invention includes, in some embodiments, an aqueous concentrate of the PVOH resin and the sulfonic acid-functionalized co-resin, where the total resin content is in the range of about 10% to about 40% and the viscosity is less than 15,000 cps. By way of the invention it is possible to adjust hydraulic cement slurry characteristics in real time upon demand and reduce inventory by providing a concentrated aqueous fluid loss additive.Type: GrantFiled: August 2, 2005Date of Patent: November 23, 2010Assignee: Sekisui Specialty Chemicals America, LLCInventors: Michael E. George, Kristi J. Beckman, Freddie Lyn Sabins, Cory J. Sikora
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Patent number: 7834090Abstract: A torsional vibration damper or other vibration damping device with a rubber vibration absorbing element. The rubber element is a peroxide-cured composition based on 100 parts of ethylene-alpha-olefin elastomer, and 5 to 100 parts of polyvinyl butyral polymer which may have a molecular weight from about 40,000 to about 250,000. The composition may also include a compatibilizer or homogenizer, such as chlorinated polyethylene. The polyvinyl butyral increases the damping of the composition, and the compatibilizer improves the temperature stability of the damping.Type: GrantFiled: August 3, 2007Date of Patent: November 16, 2010Assignee: The Gates CorporationInventors: Yuding Feng, Yahya Hodjat, Lin Zhu
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Publication number: 20100272761Abstract: The present disclosure provides polymer compounds binding with lipoamide produced by the reaction of the primary amine group of lipoamide with the carboxy group of polysaccharide compounds such as chondroitin sulfates, carboxymethyl celluloses, or hyaluronic acids; functional compounds such as peptides, proteins, growth factors; or drugs; or biocompatible polymers such as poly(ethylene oxide), poly(vinyl alcohol), or poly(vinyl pyrrolidone). The present disclosure also provides their synthesis methods, products of hydrogels and films using the same as and methods for manufacturing the products.Type: ApplicationFiled: October 29, 2009Publication date: October 28, 2010Applicant: Seoul National University of Technology Center for Industrial CollaborationInventors: Insup NOH, Seongyeun JO, Doyeon KIM, Junghoon WOO
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Patent number: 7811646Abstract: Provided is a modified ethylene-vinyl alcohol copolymer (C) having an ethylen content of 5 to 55 mol %, which contains a specific structural unit (I) in an amount of 0.3 to 40 mol % and may be obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) having a molecular weight of not more than 500. This can be produced by a method for producing the modified ethylene-vinyl alcohol copolymer (C) which comprises melting and kneading an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) in an extruder. The modified ethylene-vinyl alcohol copolymer (C) is superior to a unmodified ethylene-vinyl alcohol copolymer (A) in transparency, stretchability, flexibility and flexing resistance due to the specific structural unit (I) incorporated therein, and thus, can be used as a barrier material in various applications requiring the above performance capabilities.Type: GrantFiled: May 13, 2002Date of Patent: October 12, 2010Assignee: Kuraray Co., Ltd.Inventors: Kaoru Ikeda, Shinji Tai, Kouta Isoyama, Tomoyuki Watanabe
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Patent number: 7807749Abstract: A formaldehyde-free curable aqueous composition containing a hydroxy-containing polymer, a multi-functional crosslinking agent, and, optionally, a catalyst. The composition is used as a binder for lignocellulosic materials such as plywood, fiber particleboard, medium density fiberboard and oriented strand board.Type: GrantFiled: January 11, 2007Date of Patent: October 5, 2010Assignee: Dynea OyInventors: Elena Pisanova, Humayun Mandal
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Publication number: 20100234253Abstract: A viscous fluid, such as heavy crude oil which is too viscous to enable it to be pumped from a flowing phase of a reservoir into and along a pipeline for delivery to a refinery or other storage facility, may be contacted with a formulation to reduce its viscosity. The formulation comprises a polymeric material AA which includes —O— moieties pendent from a polymeric backbone thereof and said material is optionally cross-linked. In one embodiment, the formulation may comprise polyvinyl alcohol. In an alternative embodiment, the formulation may comprise a cross-linked polymeric material, such as cross-linked polyvinyl alcohol. After the viscous composition has been transported to a desired location, it may be separated from the other components.Type: ApplicationFiled: May 25, 2010Publication date: September 16, 2010Applicant: Advanced Gel Technology LimitedInventors: Philip Fletcher, Michael John Crabtree, Donald Eagland, Nicholas John Crowther
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Publication number: 20100215613Abstract: A temporary embolic material for blood vessel which can embolize a blood vessel in a living body and is used for the temporary embolization of the blood stream. More specifically, disclosed is an embolus-forming material comprising a specific PVA particle which can be used for the closure of the inner lumen of a blood vessel by the PVA particle to embolize the blood stream, which can ultimately be absorbed in the living body, which can be excreted out of the body and which does not remain in the body. A pearl-like polyvinyl alcohol particle for use as a temporary embolic material, the particle having a saponification degree of 90 mol % or higher and an average particle diameter of 70 to 1000 ?m; and a temporary embolic material comprising the particle mixed or dissolved therein.Type: ApplicationFiled: June 28, 2006Publication date: August 26, 2010Inventors: Mitsuo Shibutani, Shinya Wakimoto, Yuzo Shomura
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Patent number: 7781506Abstract: Disclosed are a composition, a process that can be used to produce the composition, and an article comprising or produced from the composition wherein the composition comprises or is produced from PVOH and a polyol ester plasticizer; the PVOH includes a PVOH homopolymer or copolymer; the polyol ester plasticizer includes an esterified polyol having one or more ester groups and at least one free hydroxyl group; and the process comprises combining PVOH with a polyol ester plasticizer under a condition sufficient to transesterify the poly(vinyl alcohol).Type: GrantFiled: January 26, 2007Date of Patent: August 24, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: David C. Urian, Peter A. Morken, Donna Lynn Visioli
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Patent number: 7776961Abstract: The present invention provides an oxygen absorber which exhibits a high oxygen-absorbing ability even if a transition metal salt as a catalyst for making oxygen-absorbing ability high is not added thereto and further keeps a high mechanical strength even after the absorber absorbs oxygen. An oxygen absorber containing a cyclized conjugated diene polymer as an active ingredient. About the cyclized conjugated diene polymer, the percent decrease in unsaturated-bond amount is preferably 10% or more and the weight-average molecular weight preferably ranges 1,000 to 1,000,000. The oxygen absorber may further contain a thermoplastic resin. The content of an antioxidant in the oxygen absorber is preferably 500 ppm or lower. The oxygen absorber is in a film, sheet or powder form.Type: GrantFiled: November 26, 2004Date of Patent: August 17, 2010Assignee: Zeon CorporationInventors: Shizuo Kitahara, Kazuyo Terada
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Publication number: 20100204800Abstract: The invention provides a multi-polymer hydrogel article having a first polymeric, water-swellable material and a second polymeric material, organized such that a first region substantially comprises the first polymeric, water-swellable material, a second region adjacent the first region comprises a mixture of the first polymeric, water-swellable material and the second polymeric material, and a third region adjacent the second region substantially comprises the second polymeric material. The article exhibits an increasing concentration gradient of the second polymeric material moving from the first region, through the second region, to the third region.Type: ApplicationFiled: April 26, 2010Publication date: August 12, 2010Applicant: ZIMMER, INC.Inventors: Brian Thomas, Kai Zhang
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Publication number: 20100196730Abstract: The presently disclosed subject matter is directed to films that serve as barriers to atmospheric oxygen. More particularly, the presently disclosed subject matter pertains to monolayer and multilayer films wherein at least one layer of the film contains a blend of a 21 to 30 mol % ethylene vinyl alcohol copolymer and a 41 to 50 mol % ethylene vinyl alcohol copolymer. Methods of making and using the disclosed films are also provided.Type: ApplicationFiled: June 9, 2008Publication date: August 5, 2010Inventor: Solomon Bekele
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Publication number: 20100197831Abstract: The invention relates to a crosslinkable polymer powder composition redispersible in water, obtainable by means of free radical polymerization, in an aqueous medium, of one or more monomers from the group consisting of vinyl esters of straight-chain or branched alkylcarboxylic acids having 1 to 15 C atoms, methacrylates and acrylates of alcohols having 1 to 15 C atoms, vinylaromatics, olefins, dienes and vinyl halides, no epoxide-functional comonomers being copolymerized, and subsequent drying of the polymer dispersion obtained thereby, wherein, before and/or during the polymerization and/or before the drying of the polymer dispersion obtained thereby, an epoxy resin is added and, if appropriate after the drying, a curing agent crosslinking with the epoxy resin is added.Type: ApplicationFiled: January 28, 2010Publication date: August 5, 2010Applicant: Wacker Chemie AGInventors: Michael Faatz, Reinhard Haerzschel
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Publication number: 20100197859Abstract: The present invention provides polymer blends comprising the components (a) from 40% to 95% by weight of at least one polyaryl ether copolymer constructed of (a1) from 50% to 99.9% by weight of building units of the general formula I and from 0% to 40% by weight of further building units II selected from segments of one or more thermoplastic polymers, and (a2) from 0.Type: ApplicationFiled: August 27, 2008Publication date: August 5, 2010Applicant: BASF SEInventors: Martin Weber, Christian Maletzko, Qian Yang, Tai-Shung Chung
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Patent number: 7767756Abstract: The application describes materials derived from keratin proteins in combination with polymers, either as intimate mixtures with water soluble polymers, or as chemically bound copolymers. The keratin protein is a specific keratin protein fraction, and is preferably intact, s-sulfonated and from the intermediate filament protein family. The application also describes the process for production of these materials.Type: GrantFiled: September 13, 2004Date of Patent: August 3, 2010Assignee: Keraplast Technologies, Ltd.Inventors: Robert James Kelly, Mohammad Azam Ali, Alisa Dawn Roddick-Lanzilotta, Gillian Worth, Mohammad Mahbubul Hassan, John Robert McLaughlin, Alan John McKinnon
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Publication number: 20100187729Abstract: A method for manufacturing a fine polymer including: generating superheated steam by a superheated steam generating unit (101); adjusting the pressure of the generated superheated steam by a pressure adjusting unit (102); receiving a polymer by a reception unit (103); heating the received polymer to a predetermined temperature by a heating unit (104); discharging the heated polymer through a first discharge port (111); and discharging the superheated steam through a second discharge port (121) at the same time as the time when the heated polymer is discharged. Here, the second discharge port (121) surrounds the first discharge port (111), and the first discharge port (111) and the second discharge port (121) face the same direction.Type: ApplicationFiled: July 4, 2008Publication date: July 29, 2010Inventors: Mitsuhiro Takahashi, Mikio Takezawa, Yoshiaki Tominaga, Takahiro Kurokawa, Hiroto Sumida, Kazunori Ishikawa
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Publication number: 20100184917Abstract: The present invention provides a method for producing a vinyl resin in which, in suspension polymerization of a vinyl compound using a polymerization tank equipped with a reflux condenser, uniform vinyl polymer particles are obtained and an excellent defoaming property is achieved against dry foam that occurs at middle to later stages of the polymerization. The present invention provides a method for producing a vinyl resin including the step of in suspension polymerization of a vinyl compound using a polymerization tank equipped with a reflux condenser in the presence of a dispersion stabilizer for suspension polymerization, adding, at the time when the polymerization conversion is 10% or more, 0.Type: ApplicationFiled: June 10, 2008Publication date: July 22, 2010Applicant: KURARAY CO., LTD.Inventors: Masaki Kato, Masato Nakamae
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Publication number: 20100176210Abstract: This invention provides a hydrophilic porous fiber wick for delivering vaporizable material into the atmosphere, such as a room environment. The wick may be biodegradable. The wick is comprised of a sintered synthetic bicomponent fibers, optionally combined with synthetic monocomponent fibers or natural monocomponent fibers. The wick is optionally treated with plasma or finishing agents for improved hydrophilicity. The wick can wick aqueous and/or non-aqueous-based fragrances or other vaporizable materials and evaporate them into the air without the use of heat, convection air, or atomization.Type: ApplicationFiled: January 8, 2010Publication date: July 15, 2010Applicant: Porex CorporationInventors: Michael Arthur, Kevin Sporrer, Guoqiang Mao
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Publication number: 20100175227Abstract: A fastening assembly that has an item made of, or that includes, a water-soluble material; and related methods for manufacturing, or dissolving or weakening, the fastening assembly, which has at least one water-soluble portion that includes the water-soluble material.Type: ApplicationFiled: January 8, 2010Publication date: July 15, 2010Inventors: Charles J. Burout, III, Thomas Shilale
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Patent number: 7754812Abstract: An adhesion promoter for a hot melt adhesive or a pressure sensitive adhesive prepared by admixing a hydrolytic silane compound with an aqueous buffer solution. The adhesive is able to bind at very low surface free energy substrates, such as Xerographic prints contaminated by silicone fuser oil. The hot melt adhesive maintains a substantially stable viscosity at temperature ranging from about 100° C. to about 200° C.Type: GrantFiled: January 16, 2007Date of Patent: July 13, 2010Assignee: Xerox CorporationInventors: Guiqin Song, Nan-Xing Hu, T. Brian McAneney, Gordon Sisler
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Patent number: 7750055Abstract: Polyvinyl alcohol gels, particularly hydrogels, which are produced by methods and formulas and are provided with a characteristic profile that is adjustable to a large extent, e.g. outstanding mechanical properties with moduli of elasticity of 30 MPa and stiffnesses of 25 MPa at a breaking elongation of 550 percent, or full transparency in a wide range of water contents.Type: GrantFiled: April 15, 2004Date of Patent: July 6, 2010Assignee: InnoGEL AGInventors: Rolf Müller, Federico Innerebner
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Publication number: 20100166607Abstract: Methods and apparatus are provided for manufacturing an analyte detecting device. In one embodiment, the method comprises providing a substrate, applying a plurality of layer of materials on said substrate; applying a layer containing at least one mediator; and screen printing a hydrogel on the layer.Type: ApplicationFiled: May 20, 2005Publication date: July 1, 2010Inventor: Norbert Bartetzko
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Publication number: 20100162473Abstract: A water-permeable protective material is provided which comprises a composition of one or more quaternary amines in combination with polyvinyl alcohol or precursor thereof. The amine may be either a polymeric or non-polymeric quaternary amine, a preferred example being poly(diallyldimethylammonium chloride) [p(DADMAC)]. The composition, if liquid, may be deposited as a layer on a substrate to be protected or a protective article may be formed by extrusion or moulding from a dry composition. The substrate may be a fabric material, particularly an item of clothing. Protection is provided against harmful or noxious agents such as chemical and biological warfare agents, organic materials, aerosols and other harmful liquid and gaseous substances.Type: ApplicationFiled: March 17, 2008Publication date: July 1, 2010Inventors: Colin Robert Willis, Stuart Anson Brewer, Michael Robert Dennis, Corrine Amy Stone
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Patent number: 7745534Abstract: Acetalized polyvinyl alcohols having a high residual polyvinyl acetate content are suitable as use as dispersing agents in the production of ceramic green films.Type: GrantFiled: May 8, 2007Date of Patent: June 29, 2010Assignee: Kuraray Europe GmbHInventors: Michael Frank, Robert Fuss
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Publication number: 20100158813Abstract: A method of making PVA microbubbles including a functionalisation step in which PVA polymeric chains are functionalised at their ends with aldehyde groups, and a subsequent cross-linking step, in which in an air-aqueous solution emulsion with a pH between 4.5 and 5.5 the previously functionalised PVA polymeric chains cross-link by means of an acetalisation reaction, thereby forming the microbubbles. The microbubbles produced are subsequently subjected to a lyophilising step, a filling step in which medicinal gas is introduced and a restoration step of the microbubbles by adding an aqueous solution.Type: ApplicationFiled: August 3, 2007Publication date: June 24, 2010Inventors: Gaio Paradossi, Francesca Cavalieri
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Publication number: 20100158849Abstract: A novel macromer or mixture thereof is described herein, comprising isocyanatophenyl ether terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the ether group of the isocyanatophenyl ether terminal isocyanate moieties, thereby forming at least two ether linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.Type: ApplicationFiled: December 19, 2008Publication date: June 24, 2010Inventors: Chetan Anirudh Khatri, Benjamin D. Fitz, Joseph Zavatsky
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Water-soluble polymers reduced in molecular weight, process for production thereof and usage thereof
Patent number: 7732527Abstract: The invention relates to water-soluble polymers reduced in molecular weight, a process for production of the same, and usage thereof.Type: GrantFiled: February 19, 2004Date of Patent: June 8, 2010Assignee: Hymo CorporationInventor: Motosuke Ono -
Patent number: 7723432Abstract: The invention provides a method for preparing a 1-benzotriazolylcarbonate ester of a water-soluble and non-peptidic polymer by reacting a terminal hydroxyl group of a water-soluble and non-peptidic polymer with di(1-benzotriazolyl)carbonate in the presence of an amine base and an organic solvent. The polymer backbone can be poly(ethylene glycol). The 1-benzotriazolylcarbonate ester can then be reacted directly with a biologically active agent to form a biologically active polymer conjugate or reacted with an amino acid, such as lysine, to form an amino acid derivative.Type: GrantFiled: April 30, 2009Date of Patent: May 25, 2010Assignee: Nektar TherapeuticsInventor: Antoni Kozlowski
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Publication number: 20100124649Abstract: The present invention provides polyurethanes including a reaction product of components including: (a) about 1 equivalent of at least one polyisocyanate; (b) about 0.05 to about 0.9 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and (c) about 0.1 to about 0.95 equivalents of at least one diol having 2 to 18 carbon atoms, wherein the reaction product components are essentially free of polyester polyol and polyether polyol and the reaction components are maintained at a temperature of at least about 100° C. for at least about 10 minutes, compositions, coatings and articles made therefrom and methods of making the same.Type: ApplicationFiled: December 14, 2006Publication date: May 20, 2010Inventors: Thomas G. Rukavina, Robert Hunia
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Patent number: 7714064Abstract: Water-soluble films are prepared from polymer blends of polyvinyl alcohol and sulfonate polymers. The sulfo group can be acid form, SO3H, as well as salt form of potassium, sodium, ammonium, i.e. —SO3K, —SO3Na, and —SO3NH4. Conventional film-forming processes can be used to produce the films. Polymeric films prepared from the blend compositions have unique characteristics. Their water solubility rate can be controlled by varying the composition ratio of the polymer blend. Their water solubility rate is increased even at a temperature of 0° C. The water-soluble polymeric films can be used as packaging materials and immersion transfer printing film.Type: GrantFiled: December 14, 2007Date of Patent: May 11, 2010Inventor: Thomas P. Yang
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Publication number: 20100108616Abstract: The invention relates to a dispersing agent composition and to a process for treating liquid slurries of bentonite particles, optionally comprising contaminating solids, in order to remove any contaminating solids and/or the bentonite particles, wherein said dispersing agent composition is added to said slurry causing contaminating solids and/or the bentonite particles to settle without flocculation.Type: ApplicationFiled: January 24, 2008Publication date: May 6, 2010Applicant: GEO Grounding Engineering OperationsInventors: Arnaud R. W. Bostyn, Jorge Capitao-Mor Da Costa E Silva
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Publication number: 20100098653Abstract: The present invention describes polymers containing 1,2-dithiolanes capable of acting as scavengers of free radicals, metals and reactive oxygen species. Also described are methods of synthesizing the antioxidant 1,2-dithiolane derivatives and polymerization thereof to produce biodegradable antioxidant polymers. The antioxidant polymers of the present invention may be used to treat diseases or conditions caused by oxidative stress and other free radical mediated conditions. The antioxidant polymers may also be used for the preparation of antioxidant particulate delivery devices of therapeutic agents.Type: ApplicationFiled: February 29, 2008Publication date: April 22, 2010Applicant: CEDARS-SINAI MEDICAL CENTERInventors: John S. Yu, Bong Seop Lee
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Patent number: 7700027Abstract: The present invention relates to a creping aid composition comprising a film-forming semi-crystalline polymer and a vehicle system comprising a cationic polymer resin, a water soluble anionic film forming polymer, and water, wherein the net Mutek charge of the vehicle system is less than about ?200 ?eq/g solid and the pH of the creping aid composition is greater than the pH of the vehicle system.Type: GrantFiled: November 6, 2008Date of Patent: April 20, 2010Assignee: The Procter & Gamble CompanyInventors: Charles William Neal, Edward Aprahamian, Jr., James Allen Cain
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Patent number: 7683126Abstract: The present invention relates to a creping aid composition comprising a film-forming semi-crystalline polymer and a vehicle system comprising a cationic polymer resin, a water soluble anionic film forming polymer, and water, wherein the net Mutek charge of the vehicle system is less than about ?200 ?eq/g solid and the pH of the creping aid composition is greater than the pH of the vehicle system.Type: GrantFiled: August 3, 2004Date of Patent: March 23, 2010Assignee: The Procter & Gamble CompanyInventors: Charles William Neal, Edward Aprahamian, Jr., James Allen Cain
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Publication number: 20100063209Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.Type: ApplicationFiled: September 10, 2009Publication date: March 11, 2010Applicant: The Regents of the University of Colorado, Body CorporateInventors: Christopher Bowman, Kristi Anseth, Bilge Hacioglu, Charlie Nuttleman
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Patent number: 7674854Abstract: It is an object of the present invention to provide a method of producing a polyvinyl acetal resin by which a polyvinyl acetal resin having a high acetalization degree can be produced even in a solid catalyst system, a polyvinyl butyral resin produced by the above-mentioned production method of a polyvinyl acetal resin, and a method of producing an esterified polyvinyl alcohol resin by which the esterification can be performed at high efficiency even in a solid catalyst system. The present invention is a method of producing a polyvinyl acetal resin, wherein a solution or a suspension containing a polyvinyl alcohol resin and a carbonyl compound is pressurized in the presence of a solid catalyst.Type: GrantFiled: August 4, 2004Date of Patent: March 9, 2010Assignee: Sekisui Chemical Co., Ltd.Inventors: Toshio Tada, Yohei Nishimura, Katsunori Toyoshima
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Patent number: 7674852Abstract: The invention relates to polyvinlyl alcohol gels which are suitable for use in the organism and which are formed at the site of application (in situ) from a viscous liquid by partial crystallization and network formation.Type: GrantFiled: August 25, 2005Date of Patent: March 9, 2010Assignee: Innogel AGInventors: Rolf Müller, Federico Innerebner
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Publication number: 20100055482Abstract: An object of the present invention is to provide a resin composition excellent in retort resistance at high temperature, gas barrier property, and anti-pinhole property as well as a multi-layer structure using the same. The invention relates to a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a polyamide-based resin (B), wherein the ethylene-vinyl alcohol copolymer (A) is an ethylene-vinyl alcohol copolymer comprising the following structural unit (1), preferably obtained by saponifying a copolymer of 3,4-diacetoxy-1-butene, a vinyl ester-based monomer, and ethylene: wherein X is a bonding chain which is an arbitrary bonding chain excluding an ether bond, R1 to R4 each independently represents an arbitrary substituent, and n represents 0 or 1.Type: ApplicationFiled: April 25, 2006Publication date: March 4, 2010Inventors: Kazuya Furukawa, Takamasa Moriyama, Kaoru Inoue