Previously Formed Solid Polymer Containing Chemically Combined Carbohydrate Admixed With A Chemical Treating Or Ethylenic Agent, Spfi, Sicp, Or Solid Polymer Patents (Class 525/54.3)
  • Patent number: 10647902
    Abstract: The present invention discloses temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof. The temporary plugging agent for drilling fluid is obtained by controlling gelatinized starch and a vinyl grafted monomer to have a polymerization reaction in an activator solution in the presence of a cross-linking agent and an initiator; the vinyl grafted monomer comprises acrylic acid, acrylamide, and 2-acrylamide-2-methyl propanesulfonic acid; the gelatinized starch is obtained by adding starch into deionized water to have a gelatinization reaction.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: May 12, 2020
    Inventors: Weian Huang, Jingwen Wang, Ming Lei, Jiaqi Zhang, Gongrang Li, Kaihe Lv, Xiongjun Wu, Zhengsong Qiu
  • Patent number: 10622671
    Abstract: Solid polymer electrolytes (SPEs) with tunable network structures are prepared by a facile one-pot reaction of polyhedral oligomeric silsesquioxane (POSS) and poly(ethylene glycol) (PEG). These SPEs with high conductivity and high modulus exhibit superior lithium dendrite growth resistance even at high current densities. Measurements of lithium metal batteries with a LiFePO4 cathode show excellent cycling stability and rate capability. Also disclosed are products made by the process of the invention and batteries including such products.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: April 14, 2020
    Assignee: Drexel University
    Inventors: Qiwei Pan, Christopher Li
  • Patent number: 10584829
    Abstract: A shipping container for shipping thermally active materials includes a plurality of structural panels that define a container interior, and are configured for receiving the thermally active materials. The container also includes an exterior disposed adjacent to an environment in which the shipping container is disposed. A thermal barrier member is placeable between the thermally active materials and the environment in which the container is placed. The thermal barrier includes a thermal barrier interior panel and a thermal barrier external panel defining a heat absorbing material receiving cavity. A flowable polymer based heat absorbing material is disposed within the heat absorbing material receiving cavity. The thermal barrier is configured to substantially surround the thermally active materials to reduce the passage of thermal energy between the thermally active materials and the environment in which the shipping container is disposed.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: March 10, 2020
    Assignee: Nochar, Inc.
    Inventors: Carl Gehlhausen, Dennis Campbell, Daniel Gehlhausen
  • Patent number: 10316246
    Abstract: The present invention discloses a method of preparing polymeric photoluminescent dots in water using inexpensive non-conjugated polymers. The resulting polymeric photoluminescent dots display the following properties: excellent water dispersibility, low toxicity, high absorptivity, good photo-stability and high quantum yield. The photoluminescent properties are not influenced by aggregation-caused quenching effect. The method is amenable to scale-up and is environmentally friendly.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 11, 2019
    Assignee: The Hong Kong Polytechnic University
    Inventors: Pei Li, Yuan Yao, Dechao Niu
  • Patent number: 10259916
    Abstract: A latex formulation for making elastomeric product, more particularly an elastomeric glove comprising a mixture of at least one base polymer, a cross-linker; and a pH adjuster, where the pH adjustor providing a pH range of 9.5 to 10.5. Still further, the present invention discloses a method for preparing a latex formulation for making elastomeric product, more particularly an elastomeric glove without using accelerators, zinc oxide and sulphur, which comprises the steps of mixing a base polymer with a pH adjuster, stirring the mixture for time period ranging from 20 minutes to 30 minutes, adding a cross-linker to the mixture, stirring said mixture for an hour, optionally adding at least one or more additive to said mixture, adding water to said mixture to achieve a total solid content (TSC) ranging in between 13% to 30% by w/w, allowing said mixture to mature.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: April 16, 2019
    Assignee: TOP GLOVE SDN. BHD.
    Inventors: Cian Ying Tung, Keuw Wei Lim, Chong Ban Wong
  • Patent number: 10118195
    Abstract: Methods are disclosed for delivering a substantially homogeneous and substantially transparent single film coating comprising siloxane-containing precursor materials onto a substantially transparent substrate surface on large components via atmospheric pressure plasma deposition techniques.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: November 6, 2018
    Inventors: Charles A. Smith, Thai H. Sweitzer
  • Patent number: 10030175
    Abstract: A multilayer label having an opacifying layer coated onto the back side of a paper facestock is provided. The opacifying layer prevents the paper from losing opacity when the label is subjected to wet conditions.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 24, 2018
    Assignee: Avery Dennison Corporation
    Inventor: Dieu Dai Huynh
  • Patent number: 9783933
    Abstract: Provided is a method of making paper and paperboard. In particular graft copolymers of vinyl monomers and functionalized vinylamine-containing base polymers by Michael addition are added to a paper furnish. The composition can be used alone or in combination with other additives for use in paper making and to improve paper making processes such as paper dry and wet strength properties.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 10, 2017
    Assignee: Solenis Technologies, L.P.
    Inventors: Sachin Borkar, Qu-Ming Gu, Joseph M Mahoney, Kate Marritt Lusvardi, Mingxiang Luo, Richard Riehle
  • Patent number: 9316905
    Abstract: The present invention relates to a cyclodextrin derivative, a method for preparing the same, a photoresist composition, a color photoresist and a display device. The cyclodextrin derivative particularly is a .alpha.-cyclodextrin modified polymerizable monomer represented by the following formula I or I?, wherein k is any integer selected from 2-6, n is any integer selected from 1-3, R is an aromatic ring having 5 to 30 carbon atoms, R? is a multivalent straight or branched carbon chain having 5 to 30 carbon atoms which may optionally be interrupted by an oxygen atom. The ?-cyclodextrin modified polymerizable monomer can be applied to a photoresist composition which has small aberration and high transmittance, thereby improving the display quality of the display apparatus.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: April 19, 2016
    Inventors: Xuelan Wang, Chen Tang, Shan Chang
  • Patent number: 9290675
    Abstract: The instant invention provides a crosslinkable coating composition, and method of producing the same. The crosslinkable coating composition according to the present invention comprises: (a) one or more polycarbamates derived from one or more polyesters comprising the condensation reaction product of one or more polyols with one or more polyacids, wherein said one or more polyols comprise at least 25 percent by weight of one or more units having 4 or more hydroxyl groups; (b) one or more crosslinking agents; (c) one or more acid catalysts; and (d) optionally one or more organic solvents.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: March 22, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Gary E. Spilman, Jeff R. Anderson, John N. Argyropoulos, Paul Foley
  • Patent number: 9085700
    Abstract: A coating composition is provided. The coating composition comprises (a) an aluminum oxide precursor and (b) a solvent, wherein the aluminum oxide precursor (a) comprises aluminum elements and the following groups bound thereon: (a1) a —OR1 group, wherein R1 is H or a substituted or unsubstituted C1 to C13 alkyl; (a2) a bidentate chelating group; and (a3) a tetrahedral coordinating group, wherein, the amount of the aluminum oxide precursor (a) is about 1 wt % to about 50 wt %, based on the total weight of the composition, and the total amount of the groups (a1), (a2) and (a3) is no more than 3 moles per 1 mole of the aluminum elements. The coating composition can be used in a semiconductor process for providing a passivation layer.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: July 21, 2015
    Inventors: Fu-Chuan Fang, Jia-Hong Chen, Jui-Yi Hung, Ching-Chang Wen
  • Patent number: 9051494
    Abstract: A sizing composition for insulating products based on mineral wool, in particular of glass or of rock, includes at least one saccharide, at least one organic polycarboxylic acid, at least one esterification catalyst, and at least one agent capable of reducing the emissions of volatile organic compounds (VOCs) chosen from sulphates, sulphamates and carbonates.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: June 9, 2015
    Inventors: Boris Jaffrennou, Benjamin Kaplan, Vincent Gignoux
  • Patent number: 9034986
    Abstract: A material comprising crosslinked polyrotaxanes which exhibits desired viscoelasticity, particularly stress-strain characteristics with a wide low-stress region, in spite of being free from solvent; and a process for production of the same. The material comprises a first polyrotaxane bearing first cyclic molecules and a second polyrotaxane bearing second cyclic molecules, and the first and second polyrotaxanes are crosslinked via the first and second cyclic molecules. The material is free from solvent and exhibits a stress of 2.0 MPa or below at 50% strain.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: May 19, 2015
    Assignee: Advanced Softmaterials Inc.
    Inventors: Yuki Hayashi, Toru Kobayashi, Junko Suda, Michiko Ito
  • Publication number: 20150031800
    Abstract: The present invention relates to polymeric materials including a glycosaminoglycan networked with a polyolefin-containing polymer. The present invention also relates to hydrogels containing the polymeric materials. The present invention further relates to methods of synthesizing the polymeric materials and hydrogels of the present invention.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 29, 2015
    Inventors: Susan P. JAMES, Susan S. YONEMURA, Ariane VARTANIAN
  • Publication number: 20150025196
    Abstract: The present invention relates to functionalized ploy(2-oxazoline) polymers, which are very suitable as a carrier and/or delivery vehicle (conjugate) of drugs, such as small therapeutic molecules and bio-pharmaceuticals. These polymers are characterized in that they comprise repeating units that are represented by the following formula —[N(R1)—(CHR2)m]- wherein R1 is R3—(CHR4)n-CONH—R5; R2 is selected from H and optionally substituted C1-5alkyl; R3 is CH2CO, C(O)O, C(O)NH OR C(S)NH; R4 is selected from H and optionally substituted C1-5alkyl; R5 is H; an C1-5alkyl; aryl; or a moiety comprising a functional group that can be used for conjugation; m is 2 or 3 and n is 1-5; or n is 0 and R3 is CH2. The invention relates further to a conjugate of these polyoxazoline polymers with at least one active moiety, such as a therapeutic moiety, a targeting moiety and/or diagnostic moiety, and to the use of these conjugates in the therapeutic treatment or prophylactic treatment or diagnosis of a disease or disorder.
    Type: Application
    Filed: December 28, 2012
    Publication date: January 22, 2015
    Inventor: Richard Hoogenboom
  • Patent number: 8901202
    Abstract: Herein described is a biocompatible material comprising a polymer matrix based on hyaluronic acid derivatives and poly-?Caprolactone, the process for preparing this material, a prosthetic device constituted by this biocompatible material and a reinforcing material, the process for preparing the prosthetic device, and its use for the partial or total replacement of meniscus, and regeneration of the meniscal fibrocartilage.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 2, 2014
    Assignees: Anika Therapeutics S.r.l.
    Inventors: Andrea Pastorello, Luigi Ambrosio, Gennaro Tafuri, Alessandra Pavesio
  • Patent number: 8853325
    Abstract: The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 8852747
    Abstract: The invention relates to coextrusion binders including renewable and/or biodegradable polymers having good adhesion properties: at least one renewable and/or biodegradable polymer (A) grafted with a functional monomer including at least one reactive function, the grafting ratio being <1% in weight of the grafted polymer (A); at least one non-grafted renewable and/or biodegradable polymer (B) identical to (A) or compatible with (A) optionally a softener (C); and optionally a starch-based material (D). The invention also relates to multilayered structures including the binder of the present invention, in which the layers are preferably made of renewable and/or biodegradable compounds. The multilayered structures are advantageously useful in the field of food packaging.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: October 7, 2014
    Assignee: Arkema France
    Inventors: Fabrice Chopinez, Johann Laffargue, Jeau-Laurent Pradel, Damien Rauline, Samuel Devisme
  • Publication number: 20140275361
    Abstract: Binder compositions and methods for making and using same are provided. In at least one specific embodiment, the binder composition can include at least one unsaturated compound having two or more unsaturated carbon-carbon bonds and at least one free radical precursor. At least one of the unsaturated carbon-carbon bonds can be a pi-bond that is not conjugated with an aromatic moiety and can be capable of free radical addition. The free radical precursor can be present in an amount of about 7 wt % to about 99 wt %, based on the weight of the one or more unsaturated compounds.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: Georgia-Pacific Chemicals LLC
    Inventors: Bobby L. Williamson, Adam K. Sniady, Brian L. Swift, Ramji Srinivasan, Feng Jing, Cornel Hagiopol
  • Patent number: 8829110
    Abstract: A new approach is conceived for the development of sustainable biomaterials comprising nanocrystalline cellulose (NCC) and polylactic acid (PLA) nanocomposites. The invention deals with advancing a method based on in situ ring opening polymerization of L-lactide in the presence of NCC particles to form NCC-PLA supramolecular nanocomposite materials. This material is hydrophobic and compatible with a wide range of synthetic and natural polymers. NCC-PLA nanocomposites have enhanced functionality (e.g. gas barrier), rheological and mechanical performance, as well as dimensional stability (i.e. less hygroexpansivity) relative to PLA. They are made from entirely renewable resources, and are potentially biocompatible as well as recyclable. NCC-PLA supramolecular nanocomposites can be suspended in most organic solvents or dried to form a solid substance. They can be processed using conventional polymer processing techniques to develop 3-dimensional structures, or spun into fibers, yarns or filaments.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 9, 2014
    Assignee: FPInnovations
    Inventors: Wadood Y. Hamad, Chuanwei Miao
  • Publication number: 20140235790
    Abstract: Provided herein are compositions and methods for intracellular delivery. The compositions are polymer compositions in which the polymer serves as a carrier for therapeutic and/or diagnostic agents. The polymer compositions are effective in targeted delivery of therapeutic and/or diagnostic agents to a cell. The polymer compositions include a targeting moiety that includes carbohydrate groups that effectively target specific cell surface receptors. The polymer compositions also include an agent binding moiety that effectively associates the therapeutic and/or diagnostic agent to be delivered to the cell.
    Type: Application
    Filed: June 11, 2012
    Publication date: August 21, 2014
    Applicant: University of Washington through its Center for Commercialization
    Inventors: Patrick Stayton, Matthew Manganiello, Anthony Convertine, Daniel M. Ratner, Yu-Hua Chow, Eun-Ho Song, Bilal Ghosn, Lynn Schnapp, Salka Keller, Debashish Roy
  • Publication number: 20140219953
    Abstract: Described herein is a cell tissue gel cross-linked with a cross-linking agent, and a quenching agent bound to a reactive group of the cross-linking agent.
    Type: Application
    Filed: January 2, 2014
    Publication date: August 7, 2014
    Applicants: Excel Med, LLC, National Cheng Kung University
    Inventor: Lynn L.H. Huang
  • Patent number: 8785552
    Abstract: A material comprising crosslinked polyrotaxanes which exhibits desired viscoelasticity, particularly stress-strain characteristics with a wide low-stress region, in spite of being free from solvent; and a process for production of the same. The material comprises a first polyrotaxane bearing first cyclic molecules and a second polyrotaxane bearing second cyclic molecules, and the first and second polyrotaxanes are crosslinked via the first and second cyclic molecules. The material is free from solvent and exhibits a stress of 2.0 MPa or below at 50% strain.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: July 22, 2014
    Assignee: Advanced Softmaterials Inc.
    Inventors: Yuki Hayashi, Toru Kobayashi, Junko Suda, Michiko Ito
  • Patent number: 8772406
    Abstract: The invention is directed a synthetic wood composite comprising biomimetic macromolecules and methods for the preparation thereof.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: July 8, 2014
    Inventors: Robert J. Linhardt, Jonathan S. Dordick, Trevor J. Simmons, Minoru Miyauchi, Sang-Hyun Lee
  • Publication number: 20140072513
    Abstract: The present invention relates to degradable polyacetal polymers having a C(O)—(CH2CH2O)n—R5 or a saccharide attached to amine radical of the backbone of the polymer, their polymer-active agent conjugates and their preparation processes, to compositions, and hydrogels containing them, as well as their use in therapy, diagnostic imaging and cosmetics.
    Type: Application
    Filed: April 3, 2012
    Publication date: March 13, 2014
    Inventor: Oscar Peña Gulin
  • Publication number: 20140058007
    Abstract: Technologies and implementations for providing melt processable poly(vinyl alcohol) blends and poly(vinyl alcohol) based membranes are generally disclosed.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 27, 2014
    Applicant: Empire Technology Development LLC
    Inventor: Carlos A. Cruz
  • Patent number: 8658147
    Abstract: The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: February 25, 2014
    Assignee: Gelesis LLC
    Inventors: Alessandro Sannino, Luigi Ambrosio, Luigi Nicolais, Christian Demitri
  • Patent number: 8641919
    Abstract: Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: February 4, 2014
    Assignee: The Johns Hopkins University
    Inventors: Michael Yu, James E. West, Ilene J. Busch-Vishniac, Dawnielle Farrar
  • Publication number: 20130267622
    Abstract: The present invention pertains to a process for the manufacture of a grafted fluorinated polymer comprising at least one grafted side chain comprising one or more glycosidic recurring units [polymer (F)], said process comprising polymerizing: vinylidene fluoride (VDF), optionally, one or more other fluorinated monomers [monomers (F)], and optionally, one or more (meth)acrylic monomers [monomers (MA)], in the presence of at least one polysaccharide derivative [derivative (P)], said polysaccharide derivative having a dynamic viscosity of less than 15 mPa×s, as measured according to ASTM D445 at 20° C. in an aqueous solution at a concentration of 2% by weight, and by further providing novel polymers (F) as defined above.
    Type: Application
    Filed: December 13, 2011
    Publication date: October 10, 2013
    Inventors: Julio A. Abusleme, Roberto Biancardi, Fabien Roblot, Anna Maria Bertasa, Giulio Brinati
  • Patent number: 8507607
    Abstract: Biodegradable graft copolymers derived from a carbohydrate and at least one ?,?-unsaturated carboxylic acid derivative having superabsorbent properties are disclosed in addition to the substantially adiabatic polymerization process by which the graft copolymers are made. The methods disclosed can be carried out in a variety of currently available continuous commercial reactors. Polymerizations carried out with starch have surprisingly produced substantially quantitative yields of graft copolymer free of residual monomer produced as a moist copolymer. Product work-up typically involves an optional neutralization and drying.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: August 13, 2013
    Inventor: William Chambers
  • Patent number: 8501308
    Abstract: Thermoplastic polymer compositions, films, continues, closures, laminates can comprise a modified vinyl polymer said modified polymer having a moiety comprising a cyclodextrin compound. The cyclodextrin compound, locked into the polymer structure, can absorb impurities, permeants, or other undesirable volatile materials. The cooperation between the cyclodextrin grafted onto the thermoplastic polymer and the polymer structure can provide barrier properties to a film, web or other polymer structure. A permeant or a contaminant can be complexed or trapped within the polymer and held within the film or Web preventing the permeant or contaminant from passing into the interior of a container or enclosure.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: August 6, 2013
    Assignee: Cellresin Technologies, LLC
    Inventors: Willard E. Wood, Neil J. Beaverson, Kasyap V. Seethamraju
  • Publication number: 20130195751
    Abstract: Provided are a self-assembled conjugate of a host molecule containing compound and a guest molecule containing compound, a delivery composition of a bioactive material comprising the self-assembled conjugate and a bioactive material to be delivered, and a composition for tissue engineering containing the self-assembled conjugate and a cell.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Inventors: Sei Kwang HAHN, Kimoon KIM, Hyuntae JUNG, Jeong-A YANG, Kyeng Min PARK
  • Patent number: 8497319
    Abstract: The present invention relates to a dispersion comprising an acryl-modified cellulose ester derivative (D) dispersed in an aqueous medium, wherein a hydrophobic acrylic resin (B) and a hydrophilic acrylic resin (C) are grafted onto a cellulose ester derivative (A) in the acryl-modified cellulose ester derivative (D). The dispersion has excellent long-term storage stability, and aqueous coating compositions comprising the dispersion can form coating films with excellent coating workability, solvent resistance, chemical resistance, water resistance, and excellent curability.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 30, 2013
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Chikara Kawamura, Kisheong Han
  • Patent number: 8466232
    Abstract: The invention concerns a biodegradable copolymer composition of a polysaccaride backbone grafted with amphiphilic diblock copolymers, as well as a process for the preparation of such composition and a particle suitable for the release of active ingredients made of such a composition.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: June 18, 2013
    Assignee: Firmenich SA
    Inventors: Damien Berthier, Lahoussine Ouali
  • Patent number: 8410200
    Abstract: A polymer composition and its use for thin film packaging applications including on a dry basis: a) from 45 to 90% by weight of starch; b) from 0.1 to 15% by weight of a water soluble polymer selected from polyvinyl alcohol, polyvinylacetate, and copolymers of ethylene and vinyl alcohol which have a melting point compatible with the molten state of the starch component; and c) from 5 to 45% by weight of one or more plasticizers having a molecular weight in the range of 50-6000, more preferably 50-2500 and more preferably still 100-400 and desirably selected from the group consisting of sorbitol, glycerol, maltitol, xylitol, mannitol, erythritol, glycerol trioleate, tributyl citrate, acetyl tri-ethyl citrate, glyceryl triacetate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, polyethylene oxide, ethylene glycol, diethylene glycol or polyethylene glycol.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: April 2, 2013
    Assignee: Plantic Technologies Limited
    Inventors: Nicholas R. Oakley, Nicholas J. McCaffrey, Kishan C. Khemani
  • Publication number: 20130030119
    Abstract: The present invention discloses a gene carrier and the preparation method thereof. Chondroitin sulfate (CS) is reacted with methacrylic anhydride (MA) to form chrondroitin sulfate-methacrylate (CSMA), which is further covalently bound with polyethylenimine (PEI) via the Michael addition to produce a CSMA-PEI gene carrier. The CSMA-PEI gene carrier can effectively reduce the cytotoxicity of PEI and enhance the transfection efficiency of PEI.
    Type: Application
    Filed: November 18, 2011
    Publication date: January 31, 2013
  • Publication number: 20130022785
    Abstract: The present invention discloses diblock copolymer systems that self-assemble to produce very small structures. These co-polymers consist of one block that contains silicon and another block comprised of an oligosaccharide that are coupled by azide-alkyne cycloaddition.
    Type: Application
    Filed: June 20, 2012
    Publication date: January 24, 2013
    Inventors: Christopher John Ellison, Julia Cushen, Issei Otsuka, C. Grant Willson, Christopher M. Bates, Jeffery Alan Easley, Redouane Borsali, Sebastien Fort, Sami Halila
  • Patent number: 8349948
    Abstract: A green approach for the development of nanocomposite materials comprising nanocrystalline cellulose (NCC) and appropriate vinyl polymers is conceived. The approach deals with the in-situ graft co-polymerization of hydrophobic vinyl monomers, such as vinyl acetate and methyl methacrylate, onto the NCC surface in an aqueous medium. The resulting material is significantly more hydrophobic and thermally stable than the starting NCC. The nanocomposite material can be suspended in appropriate solvents, dried and molded with other materials using conventional polymer processing techniques to develop yet new materials with new characteristics. These nanocomposites have wide ranging applications from industrial to medical use.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: January 8, 2013
    Assignee: FPInnovations
    Inventors: Wadood Y. Hamad, Shunxing Su
  • Publication number: 20120328557
    Abstract: Described herein is a cell tissue gel cross-linked with a cross-linking agent, and a quenching agent bound to a reactive group of the cross-linking agent.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 27, 2012
    Applicants: Excel Med, LLC, National Cheng Kung University
    Inventor: Lynn L.H. Huang
  • Publication number: 20120322714
    Abstract: Branched polyesters with sulfonate groups obtainable by the reaction of the components A, B, optionally C and optionally D to give branched polyesters, where the component A is selected from the group of ?,?-olefinically unsaturated dicarboxylic acids, and the component B is selected from the group of tri- or higher-functional alcohols, the optional component C is selected from the group of difunctional alcohols or of difunctional carboxylic acids without ?,?-olefinically unsaturated bonds, the optional component D is selected from fatty acids or fatty alcohols, and the subsequent reaction of the resulting branched polyesters with hydrogen sulfite, where the molar amount of hydrogen sulfite is at most 95 mol %, based on the amount of ?,?-olefinically unsaturated dicarboxylic acid.
    Type: Application
    Filed: June 13, 2012
    Publication date: December 20, 2012
    Applicant: BASF SE
    Inventors: Monika HABERECHT, Frank Ritting, Bernd Bruchmann, Claudia Esper, Roland Ettl, Karl Kolter
  • Patent number: 8318856
    Abstract: The present invention relates to a delivery system for nucleic acid using a cationic polymer conjugate, and more specifically relates to a delivery system for nucleic acid comprising a cationic polymer conjugate prepared by conjugating hyaluronic acid or its derivative and polyethyleneimine, and a composition of delivering a nucleic acid into mammalian cell comprising a complex of the nucleic acid and a cationic polymer conjugate with electrostatic binding.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: November 27, 2012
    Assignees: Postech Academy-Industry Foundation, Korea University Industry and Academy Collaboration Foundation
    Inventors: Yu-Kyoung Oh, Hyun-Gu Kang, Ji-Seok Kim, Jiang Ge, Ki-Su Kim, Ki-Tae Park, Su-Eun Han, Ga-Yong Shim, Ii-Hwan Cho, Sei-Kwang Hahn
  • Patent number: 8299172
    Abstract: A method for producing biodegradable plastic from natural materials containing polysaccharides by treating the polysaccharide-containing materials with a basic aqueous solution, subsequently treating the mixture with a modifying material that converts pendant hydroxyl groups at any carbon atom of the anhydroglucose units of the saccharide to create polysaccharide carboxylate, and then reacting the product with proteins to produce a biodegradable copolymer with electrostatic chemical bonds between protein and polysaccharide carboxylate molecules. The process provides relatively inexpensive methods for preparing biodegradable plastics that are useful for manufacturing various articles.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: October 30, 2012
    Assignee: Saginaw Valley State University
    Inventors: Christopher H. Schilling, David S. Karpovich, Piotr Tomasik
  • Patent number: 8299174
    Abstract: A curable binder composition consisting essentially of one or more ammonium salt of an inorganic acid and at least one carbohydrate, and the use thereof as a thermosetting binder. Also described are composite materials comprising the curable binder composition, and methods of application.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 30, 2012
    Assignee: Rohm and Haas Company
    Inventors: Jean Marie Brady, Michael DeWayne Kelly, Barry Weinstein
  • Publication number: 20120225129
    Abstract: Particles and conjugates for delivering nucleic acid agents. Compositions containing the particles, the conjugates, or both. Methods of using the particles, the conjugates, and the compositions.
    Type: Application
    Filed: August 18, 2011
    Publication date: September 6, 2012
    Inventors: Scott Eliasof, Oliver S. Fetzer, Jungyeon Hwang, Patrick Lim Soo, Pei-Sze Ng, Sonke Svenson, Donald E. Bergstrom
  • Patent number: 8222342
    Abstract: 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: Grant
    Filed: August 27, 2008
    Date of Patent: July 17, 2012
    Assignee: BASF SE
    Inventors: Martin Weber, Christian Maletzko, Qian Yang, Tai-Shung Chung
  • Publication number: 20120178620
    Abstract: The present invention relates to carboxyethyl cellulose fibers, to a method for producing the same and their use for wound treatment, especially in wound dressings, in other products for medical applications such as swabs, bandages and the like, and in hygiene items, and in all these applications, particularly for producing a surface to be in contact with the body. The products produced from the fibers according to the invention do not stick to the wounds or to the skin despite being extremely absorbent and have such good cohesion in the swollen state that especially the wound dressings produced therefrom can be peeled off from the wound in one piece without injuring the same.
    Type: Application
    Filed: July 27, 2010
    Publication date: July 12, 2012
    Applicant: LENZING AG
    Inventors: Rastislav Krajcik, Shayda Rahbaran
  • Patent number: 8211976
    Abstract: Embodiments of a composition useful for making sports equipment, such as golf balls, are disclosed comprising at least one polyurethane, polyurea, polymer precursor composition thereof, blocked polyurethane, blocked polyurea or blocked polymer precursor composition thereof, and an effective amount of a polyfunctional modifier. One disclosed embodiment of a method for forming a golf ball comprises providing a first composition comprising at least one polyurethane, polyurea, polymer precursor composition thereof, blocked polyurethane, blocked polyurea or blocked polymer precursor composition thereof, and an effective amount of a polyfunctional modifier. The first composition is combined with at least a second composition to make at least one component of a golf ball.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: July 3, 2012
    Assignee: Taylor Made Golf Company, Inc.
    Inventors: Hyun J. Kim, Hong G. Jeon
  • Publication number: 20120165228
    Abstract: Nature evolves biological molecules such as proteins through iterated rounds of diversification, selection, and amplification. The present invention provides methods, compositions, and systems for synthesizing, selecting, amplifying, and evolving non-natural molecules based on nucleic acid templates. The sequence of a nucleic acid template is used to direct the synthesis of non-natural molecules such as unnatural polymers and small molecules. Using this method combinatorial libraries of these molecules can be prepared and screened. Upon selection of a molecule, its encoding nucleic acid template may be amplified and/or evolved to yield the same molecule or related molecules for re-screening. The inventive methods and compositions of the present invention allow for the amplification and evolution of non-natural molecules in a manner analogous to the amplification of natural biopolymer such as polynucleotides and protein.
    Type: Application
    Filed: June 30, 2011
    Publication date: June 28, 2012
    Inventors: David R. Liu, Zev Gartner, Matthew W. Kanan
  • Patent number: 8197802
    Abstract: Provided are crosslinked polymer compositions that include a first synthetic polymer containing multiple nucleophilic groups covalently bound to a second synthetic polymer containing multiple electrophilic groups. The first synthetic polymer is preferably a synthetic polypeptide or a polyethylene glycol that has been modified to contain multiple nucleophilic groups, such as primary amino (—NH2) or thiol (—SH) groups. The second synthetic polymer may be a hydrophilic or hydrophobic synthetic polymer, which contains or has been derivatized to contain, two or more electrophilic groups, such as succinimidyl groups. The compositions may further include other components, such as naturally occurring polysaccharides or proteins (such as glycosaminoglycans or collagen) and/or biologically active agents.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: June 12, 2012
    Assignee: AngioDevice International GmbH
    Inventors: Woonza M. Rhee, Frank A. DeLustro, Richard A. Berg
  • Publication number: 20120128608
    Abstract: Hybrid copolymer compositions include a hybrid copolymer including at least one ethylenically unsaturated monomer and a naturally derived hydroxyl containing chain transfer agent as an end group; and a hybrid synthetic copolymer including one or more synthetic polymers derived from the at least one ethylenically unsaturated monomer with at least one initiator fragment as an end group. The hybrid copolymer composition may be prepared as a scale inhibiting composition. Methods of preparing a hybrid copolymer are also included.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 24, 2012
    Applicant: AKZO NOBEL N.V.
    Inventors: Klin A. Rodrigues, Matthew M. Vanderhoof, Allen M. Carrier, Jannifer Sanders