Interpolymers Patents (Class 525/60)
  • Patent number: 10350295
    Abstract: Radiopaque hydrogels, in particular radiopaque hydrogel microspheres, comprising a polymer having 1,2-diol or 1,3-diol groups acetalized with radiopaque species.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 16, 2019
    Assignee: BIOCOMPATIBLES UK LTD.
    Inventors: Stéphane Hohn, Andrew Lennard Lewis, Sean Leo Willis, Matthew R. Dreher, Koorosh Ashrafi, Yiqing Tang
  • Patent number: 10174236
    Abstract: A heat storage material composition that is excellent in shape retention and bleed resistance is provided. The heat storage material composition is obtained by heat-treating Component (A), Polymer (B-1) and Polymer (B-2) together. Component (A) is a polyhydric alcohol not having constitutional units derived from any vinyl monomers. Polymer (B-1) is a polymer composed mainly of constitutional units derived from acrylic acid or a salt thereof, a polymer composed mainly of constitutional units derived from methacrylic acid or a salt thereof, or a mixture thereof, excluding a polymer having two or more hydroxy groups in one polymer chain. Polymer (B-2) is a polymer composed mainly of constitutional units derived from a vinyl monomer, and having two or more hydroxy groups in one polymer chain.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: January 8, 2019
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yu Miura, Nobuhiro Oosaki, Yoshinobu Nozue
  • Patent number: 10125204
    Abstract: The present invention relates generally to a polyvinyl alcohol composition having higher amorphous polyvinyl alcohol polymer content, a process for making such a polyvinyl alcohol composition, and various end uses thereof.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: November 13, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Michael Collins, Ghebrehiwet Ghebremeskel, Masaki Kato, Keisuke Morikawa, Yoriko Imaoka
  • Patent number: 10081885
    Abstract: The present invention provides bi-component polymeric macrofibers having an ethylene-vinyl alcohol (EVOH) outer component and a core or second component comprising a polymer blend of polypropylene grafted with maleic anhydride and polypropylene or polyethylene. The bi-component polymeric macrofibers provide excellent fiber reinforcement in concrete applications.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: September 25, 2018
    Assignee: Dow Global Technologies LLC
    Inventor: Prasanna K. Jog
  • Patent number: 10005867
    Abstract: The present invention provides modified PVA having unsaturated double bonds derived from a specific monomer in the main chain of the molecule. A modified polyvinyl alcohol containing bond units of the formula (1) having double bonds in its molecular main chain: wherein each of X1 and X2 is a C1-12 lower alkyl group, a hydrogen atom or a metal atom, g is an integer of from 0 to 3, h is an integer of from 0 to 12, Y1 is a hydrogen atom or —COOM, and M is a hydrogen atom, an alkyl group or a metal atom.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 26, 2018
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoshi Watanabe, Hirohisa Otake
  • Patent number: 9957394
    Abstract: Disclosed is a method for preparing powder coating compositions. The method includes mixing in an aqueous medium a carboxylic acid functional polymer having a high glass transition temperature, with a polycarbodiimide having a high glass transition temperature, drying the mixture, and grinding the resulting solid particles to obtain a powder.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: May 1, 2018
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Hongying Zhou, Anthony Chasser, Shanti Swarup
  • Patent number: 9193815
    Abstract: A polymer membrane for water treatment composed of a vinyl chloride copolymer comprising a vinyl chloride monomer and a hydrophilic monomer.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 24, 2015
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Toshihiro Tamai, Yuki Goto, Takashi Osugi, Ryuichi Matsuo, Naotaka Oyabu
  • Patent number: 9051460
    Abstract: Disclosed herein is a polyamide-filled curable hydrocarbon elastomer compositions having enhanced heat aging performance where the presence of conventional filler, such as carbon black or silica, does not detract from desired heat stability properties. Also disclosed are polyamide-filled curable hydrocarbon elastomer compositions where the use of compatibilzer is optional, for polyamides having an inherent viscosity of greater than 0.88 dL/g.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 9, 2015
    Assignee: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Steven R Oriani
  • Publication number: 20150125697
    Abstract: The present invention provides a saponification product of a vinyl ester/ethylenically unsaturated carboxylic acid ester copolymer having superior tolerance of the aqueous thickening liquid against mechanical shear. More specifically, the present invention provides a saponification product of a vinyl ester/ethylenically unsaturated carboxylic acid ester copolymer having the superior tolerance, by polymerizing a mixture where the molar ratio of the vinyl ester/ethylenically unsaturated carboxylic acid ester is from 8/2 to 3/7, and saponifying the obtained copolymer in a mixed solvent where the mass composition ratio of an aqueous organic solvent/water mixture solvent is from 3/7 to 8/2.
    Type: Application
    Filed: May 1, 2012
    Publication date: May 7, 2015
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Tomoaki Yamasaki, Yuji Kinpara, Shigeki Hamamoto
  • Patent number: 8975309
    Abstract: A cryogel-forming vinyl alcohol co-polymer is operable to form a cryogel, i.e., a hydrogel formed by crytropic gelation, in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier. In one embodiment, a vinyl alcohol co-polymer cryogel comprises at least about 75% by weight water and a vinyl alcohol co-polymer, wherein the vinyl alcohol co-polymer is operable to form a cryogel in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: March 10, 2015
    Inventors: Maria Stromme, Albert Mihranyan
  • Publication number: 20150018487
    Abstract: Provided is a thermoplastic resin composition which exhibits little dependence of air permeability on fatigue. The present invention is a thermoplastic resin composition which comprises an ethylene-vinyl alcohol copolymer and a polyamide resin, said thermoplastic resin composition being characterized in that only one maximal peak point assignable to crystallization is observed in the curve of heat flow versus temperature as determined by differential scanning calorimetry of a melt-kneaded mixture of 25 parts by mass of the ethylene-vinyl alcohol copolymer and 75 parts by mass of the polyamide resin in a cooling process.
    Type: Application
    Filed: November 19, 2012
    Publication date: January 15, 2015
    Inventor: Shun Sato
  • Patent number: 8883915
    Abstract: A composition of matter comprising a hydrophobic or hydrophilic (or both) interpenetrating polymer network containing a non-ionic/ionic polymer and a hydrophobic thermoset or thermoplastic polymer, articles made from such composition and methods of preparing such articles. The invention also includes a process for preparing a hydrophobic/hydrophilic IPN or semi-IPN from a hydrophobic thermoset or thermoplastic polymer including the steps of placing an non-ionizable/ionizable monomer solution in contact with a hydrophobic thermoset or thermoplastic polymer; diffusing the monomer solution into the hydrophobic thermoset or thermoplastic polymer; and polymerizing the monomers to form a penetrating polymer inside the hydrophobic thermoset or thermoplastic polymer, thereby forming the IPN or semi-IPN.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: November 11, 2014
    Assignee: Biomimedica, Inc.
    Inventors: David Myung, Michael J. Jaasma, Lampros Kourtis, Daniel Chang, Curtis W. Frank
  • Patent number: 8877853
    Abstract: A plastic preform, container or article includes a multilayer wall having at least one layer of a matrix resin, at least one layer of a barrier resin, an adhesion-promoting material blended with the barrier resin and/or matrix resin, and an active oxygen barrier composition blended with the barrier resin and/or matrix resin. The adhesion-promoting material promotes bonding between the barrier and matrix resin layers and includes an amine polymer, preferably an imine polymer having a number of available primary, secondary or tertiary amine groups. The matrix resin preferably is an ester-containing resin, such as PET. The barrier resin preferably is EVOH. The active oxygen barrier composition includes a metal with an additive compound, and may also include a host polymer.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: November 4, 2014
    Assignee: Graham Packaging Company, LP
    Inventor: Philip D. Bourgeois
  • Patent number: 8828069
    Abstract: A method of forming a surface layer that includes a hydroxyl polymer on a substrate coating on a medical device is provided.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: September 9, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Lothar W. Kleiner, Jessica Reneé´ DesNoyer, Thierry Glauser, Stephen D. Pacetti, Syed Faiyaz Ahmed Hossainy
  • Patent number: 8816002
    Abstract: The invention provides for preparing a polymer-active agent conjugate, the method comprising the steps of reacting an amino acid derivative with a biologically active agent under conditions to form a polymer-active agent conjugate.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: August 26, 2014
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 8809455
    Abstract: A dynamically vulcanized alloy contains at least one isobutylene-containing elastomer and at least one thermoplastic resin, wherein the elastomer is present as a dispersed phase of small vulcanized or partially vulcanized particles in a continuous phase of the thermoplastic resin. The dynamically vulcanized alloy also contains an anhydride functionalized oligomer. The alloy maintains a high Shore A hardness value while obtaining improved flowability for processing.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: August 19, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Maria D. Ellul, Anthony Jay Dias, Rodney May
  • Publication number: 20140213727
    Abstract: A water soluble polyvinyl alcohol copolymer having a diad syndiotacticity of greater than about 60% and less than about 70%. In some embodiments, the water soluble polyvinyl alcohol copolymer is soluble in water at a concentration of at least 1 wt % at a temperature of less than 100° C. In other embodiments, the composition is soluble in water at a concentration of at least 5 wt % at a temperature in the range from about 90° C. to less than 100° C. The high solubility of the high syndiotactic poly vinyl alcohols disclosed herein may provide various advantages as described herein, including ease of processing and decreased use of harmful solvents.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 31, 2014
    Applicant: SEKISUI SPECIALTY CHEMICALS AMERICA, LLC
    Inventors: Yohei Nishimura, Regan Pollock, Richard Vicari
  • Patent number: 8759465
    Abstract: A class of bioinspired, cross linking polymers, created by working catechol functionalities into the backbone of a bulk polymer, is disclosed. Varied cross linking groups may be incorporated into different polymer backbones, and subsequently reacted with an array of reagents. An adhesive composition comprising a copolymer, the copolymer comprising pendant dihydroxyphenyl groups; and a crosslinking agent selected from the group consisting of, for example, oxidants, enzymes, metals, and light. A method of preparing an adhesive composition comprising copolymerizing a first monomer comprising pendant dihydroxy-protected dihydroxyphenyl groups; deprotecting the dihydroxy-protected dihydroxyphenyl groups; crosslinking the dihydroxyphenyl groups with a crosslinking agent.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 24, 2014
    Assignee: Purdue Research Foundation
    Inventors: Jonathan James Wilker, Glenn Westwood, Trinity Noel Horton
  • Publication number: 20140141262
    Abstract: A functionalized homopolymer or copolymer of vinyl alcohol of the formula P—(R)n, where: P represents a straight or branched chain polymer backbone that is a homopolymer of vinyl alcohol or a copolymer of vinyl alcohol and at least one other monomer, the homopolymer or copolymer comprising one or more reactive coupling group; R represents an aminosilane-containing and/or an aminosilanol-containing side chain attached to the polymer backbone via the one or more reactive coupling group; and n represents the number of side chains, which are present in an amount from about 1 to about 25 mol % of the polymer backbone; and ink or coating compositions containing the functionalized polymer.
    Type: Application
    Filed: December 16, 2013
    Publication date: May 22, 2014
    Applicant: SUN CHEMICAL CORPORATION
    Inventors: Thomas Charles CASTLE, Robert Louis FINCH, David Alan PEARS, Maurice PRESTON, Pennadam Shanmugam SIVANAND, Brian David YOUNG, Derek Ronald ILLSLEY
  • Patent number: 8664333
    Abstract: An object of the present invention is to provide a new acetoacetic ester group-containing polyvinyl alcohol-based resin that contains less amount of water-insoluble matter and is excellent in transparency and viscosity stability when converted into an aqueous solution, and that realizes excellent water resistance by combined use of a crosslinking agent. The invention provides an acetoacetic ester group-containing polyvinyl alcohol-based resin containing a structural unit represented by the general formula (1): wherein at least one of R1 and R2 represents an acetoacetyl group, R3, R4, R5, R6, R7 and R8 each independently represents an arbitrary substituent, and X represents a single bond or an arbitrary bonding chain.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: March 4, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Mitsuo Shibutani, Masahiro Saito
  • Publication number: 20140024766
    Abstract: In one embodiment, the invention is to a vinyl acetate/diacetoxyethylene copolymer, processes of making the copolymer and processes of hydrolyzing said copolymer to form a copolymerized polyvinyl alcohol.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 23, 2014
    Applicant: Celanese International Corporation
    Inventors: Joseph G. Duff, Stephen Kerlegon, Kien-Van Phung, Daniel Rangel-Osalde, Tatiana H. Sonnenberg, Cathy Tway, Hang Wang
  • Publication number: 20140018462
    Abstract: Provided are a method for producing an EVOH resin having sufficient long-run workability in melt molding and enabling prevention of coloring such as yellowing, an EVOH resin obtained by this method for production, and a laminate obtained from this resin. Additionally, a method for producing an ethylene-vinyl alcohol copolymer resin capable of efficiently drying while inhibiting deterioration of qualities is provided. The method for producing an ethylene-vinyl alcohol copolymer resin of the present invention includes a step of irradiation with an infrared ray for irradiating with an infrared ray an ethylene-vinyl alcohol copolymer or an ethylene-vinyl ester copolymer that is a precursor of the ethylene-vinyl alcohol copolymer.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 16, 2014
    Applicant: KURARAY CO., LTD.
    Inventors: Toshio Tsuboi, Ray Jouett, Robert Armstrong, Yoshio Yamamoto, Kenji Nakano, Kazutaka Ikeda
  • Patent number: 8629213
    Abstract: The invention relates to a composition including at least one elastomer and at least one supramolecular polymer. The supramolecular polymer is obtained by the reaction of at least one trifunctional compound (A), having first and second functions, with: at least one compound (B) having at least one reactive group capable of reacting with the first functions of (A) and at least one associative group; and at least one at least bifunctional compound (C) having functions capable of reacting with the second functions of compound (A) in order to form ester, thioester and amide bridges.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: January 14, 2014
    Assignee: Arkema France
    Inventors: Manuel Hidalgo, Christelle Plaut, Alfredo Defrancisci
  • Publication number: 20130312325
    Abstract: There is provided a medium for plant cultivation comprising an ethylene-vinyl alcohol copolymer chip. An ethylene content of ethylene-vinyl alcohol copolymer included in the ethylene-vinyl alcohol copolymer chip is preferably 20 to 60 mol %. In addition, a water content in the ethylene-vinyl alcohol copolymer chip is preferably 20 to 300 parts by mass relative to 100 parts by mass of the ethylene-vinyl alcohol copolymer. As a result, it is possible to provide a medium for plant cultivation, which is capable of being used instead of the soil or rock wools, and with which it is possible to sufficiently grow crop plants, to have excellent recyclability, to facilitate a process for disposal the medium, and to have a small environmental burden.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 28, 2013
    Applicant: KURARAY CO., LTD.
    Inventors: Yasuyo Nishimura, Takashi Wakui
  • Patent number: 8563651
    Abstract: The invention provides a method comprising the steps of providing a poly(ethylene glycol) having one terminal hydroxyl group; reacting the terminal hydroxyl group of the poly(ethylene glycol) with di(1-benzotriazolyl)carbonate to form a 1-benzotriazolylcarbonate ester of the poly(ethylene glycol); reacting the 1-benzotriazolylcarbonate ester of the poly(ethylene glycol) with an amino acid to form an amino acid derivative; and reacting the amino acid derivative with a biologically active agent under conditions to form a polymer-active agent conjugate.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: October 22, 2013
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 8524831
    Abstract: The present invention provides a polyvinyl alcohol polymer having excellent water solubility, compared to conventional polyvinyl alcohol polymers, and having a high cloud point even when the polyvinyl alcohol polymer is partially saponified. The present invention is a polyvinyl alcohol polymer having, at its end, a group represented by the general formula (I) and/or having, in its main chain, a group represented by the general formula (II). In the formulae, R denotes a hydrogen atom or an OM group, and M denotes a hydrogen atom, an alkali metal atom, a 1/2 alkaline earth metal atom, or an ammonium group.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 3, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Masaki Kato, Masato Nakamae, Yuta Taoka
  • Patent number: 8445581
    Abstract: The present invention provides a biocompatible prepolymer comprising hydrophilic and hydrophobic segments, wherein the hydrophobic segments have at least one ethylenically unsaturated functional group and at least 5% of the segments have two or more ethylenically unsaturated functional groups and water. The invention further provides a biocompatible prepolymer composition comprising hydrophilic and hydrophobic prepolymers, wherein at least one of the hydrophobic prepolymers has at least one ethylenically unsaturated functional group and at least 5% of the prepolymers have two or more ethylenically unsaturated functional groups and water. The invention further provides use of the prepolymer or prepolymer compositions of the invention in biomedical applications such as tissue engineering, as bone substitutes or scaffolds, and in wound treatment.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: May 21, 2013
    Assignee: Polynovo Biomaterials Pty Limited
    Inventors: Pathiraja Arachchillage Gunatillake, Roshan Tyrrel Anton Mayadunne, Raju Adhikari, Heng Chy Taing, Tam Phuong Thi Le, Jerome Anthony Werkmeister, John Alan Maurice Ramshaw, Jacinta Frances White, Tracy Ann Tebb
  • Patent number: 8426518
    Abstract: The aforementioned problems can be solved by a dispersion stabilizer composed of a polyvinyl alcohol polymer (B) having a double bond in its side chain. The polyvinyl alcohol polymer (B) is obtained by esterifying a polyvinyl alcohol polymer (A) with a carboxylic acid having an unsaturated double bond or a salt thereof. Furthermore, the aforementioned problems can be solved with a dispersion stabilizer composed of a carboxylic acid-modified polyvinyl alcohol polymer (C) that is obtained by esterifying a polyvinyl alcohol polymer (A) with aliphatic carboxylic acid and/or aromatic carboxylic acid containing no olefinically unsaturated bond in the molecule or a salt thereof.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: April 23, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Masaki Kato, Shinsuke Nii, Yasutomo Saitou, Masato Nakamae
  • Patent number: 8394896
    Abstract: The present invention relates to a liquid ?-olefin vinyl acetate compound containing a liquid ?-olefin vinyl acetate copolymer. Compositions according to the present invention have improved resistance to premature vulcanization as well as good physical properties and aging resistance. The present invention is also directed to a vulcanized compound containing a liquid ethylene vinyl acetate copolymer.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: March 12, 2013
    Assignee: Lanxess Inc.
    Inventors: Richard Pazur, Lorenzo Ferrari
  • Patent number: 8344064
    Abstract: There is provided a thermoplastic resin composition which comprises a modified rubber having excellent low-temperature durability dispersed in a polyamide resin matrix in order to improve the low-temperature durability or repeated fatigue resistance of the polyamide resin and which maintains its flowability and can be formed into a film even at a high content of the modified rubber, and has excellent low-temperature durability. The thermoplastic resin composition comprises a modified polyamide resin (A) obtained by melt blending 100 parts by weight of a polyamide resin (A1) and 0.05 to 5 parts by weight of a compound (A2) capable of binding to a terminal amino group of the polyamide resin, at a temperature equal to or higher than the melting point of the polyamide resin (A1), and a modified rubber (B) having an acid anhydride group, an epoxy group, or a carboxyl group or a derivative thereof. The compound (A2) is preferably a monofunctional epoxy compound.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: January 1, 2013
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Naoyuki Morooka
  • Patent number: 8329818
    Abstract: 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: Grant
    Filed: May 10, 2010
    Date of Patent: December 11, 2012
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Shinji Tai, Kouta Isoyama, Tomoyuki Watanabe
  • Patent number: 8299173
    Abstract: The invention provides a method comprising the steps of (i) reacting a water-soluble and non-peptidic polymer having two or more terminal hydroxyl groups with di(1-benzotriazolyl)carbonate to form a water-soluble and non-peptidic polymer having two or more 1-benzotriazolylcarbonate ester groups; and (ii) reacting the water-soluble and non-peptidic polymer having two or more 1-benzotriazolylcarbonate ester groups with a water-soluble and non-peptidic polymer having three or more primary amino groups under conditions effective to form a cross-linked polymer composition.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: October 30, 2012
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 8277932
    Abstract: Membranes, methods of making membranes, and methods of separating gases using membranes are provided. The membranes can include at least one hydrophilic polymer, at least one cross-linking agent, at least one base, and at least one amino compound. The methods of separating gases using membranes can include contacting a gas stream containing at least one of CO2, H2S, and HCl with one side of a nonporous and at least one of CO2, H2S, and HCl selectively permeable membrane such that at least one of CO2, H2S, and HCl is selectively transported through the membrane.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: October 2, 2012
    Assignee: The Ohio State University Research Foundation
    Inventor: W. S. Winston Ho
  • Patent number: 8268450
    Abstract: Thermoplastic polyamide resin compositions include the essential components of polyamide resins, polyalcohol and epoxy resin, and, optionally, one or more additives selected from among thermoplastic impact modifiers, reinforcement agents, and polyoxides; such thermoplastic polyamide resin compositions provide superior impact resistance, heat resistance, low degree of deformation, low degree of contraction, and external appearance, but also superior paint adhesion properties without requiring a primer, and function as an adhesion medium that advantageously may be applied to the interior and exterior parts of an automobile requiring painting.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 18, 2012
    Assignee: Rhodia Polyamide Co., Ltd.
    Inventors: Lee-Wook Jang, Yeong-Chool Yu, Jong-Su Lee
  • Patent number: 8227016
    Abstract: The present invention provides a method of applying a drug-polymer coating on a stent. A stent framework is dipped into a first polymeric solution including a first polymer, a first therapeutic agent, and a first solvent. The polymeric solution is dried and the first polymer is cured to form a thin drug-polymer layer on the stent framework. The steps of dipping the stent framework into the first polymeric solution, drying the first polymeric solution, and curing the first polymer are repeated until a target drug-polymer coating thickness is disposed on the stent framework. A drug-polymer coated stent including a stent framework and a laminated drug-polymer coated stent, a system for treating a vascular condition, and a method of treating a vascular condition are also disclosed.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: July 24, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Ronan Thornton, Finbar Dolan
  • 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: 20120164424
    Abstract: Cold water-soluble PVOH/alkyl acrylate copolymers are provided with a substantially random distribution of monomers which is reflected in the polymer's cold water solubility, GPEC chromatograms and may be confirmed by C13 NMR. The product is particularly useful for films used in packaging and for encapsulating particulate products. Encapsulated products which may be provided include fertilizer or other agricultural products, pharmaceutical products, biomedical products and cosmetic products.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 28, 2012
    Inventors: Richard Vicari, Bret F. Hann
  • Patent number: 8153714
    Abstract: A process for producing polyolefin articles comprising an ethylene-vinyl alcohol copolymer, wherein the polyolefin component is melted and mixed with the ethylene-vinyl alcohol copolymer in the presence of a stabilizing composition comprising: a) one or more acid scavengers in amounts equal to or higher than 300 ppm by weight with respect to the weight of the polyolefin component; and b) one or more phenolic antioxidants in amounts equal to or higher than 1100 ppm by weight with respect to the weight of the polyolefin component.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: April 10, 2012
    Assignee: Basell Poliolefine Italia S.R.L.
    Inventors: Fiorella Pradella, Piet Roose
  • Patent number: 8137658
    Abstract: A liquid, substantially anhydrous tooth whitener composition for delivery of a tooth-whitening amount of active whitening ingredient onto teeth, with effective bioadhesion and retention thereof, and, thereupon, sufficient penetration of the ingredient through the tooth enamel, providing efficacious bleaching of stained teeth.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: March 20, 2012
    Assignee: ISP Investments Inc.
    Inventor: William E. Prosise
  • Publication number: 20110288229
    Abstract: A sulfonic acid-functionalized vinyl alcohol copolymer is provided which is characterized by a substantial absence of compositional drift. The copolymer is produced by polymerization in two continuously-fed reaction zones such that the ratio of sulfonic acid-containing comonomer fed to the first reaction zone to the sulfonic acid-containing comonomer fed to the second reaction zone is within the range of about 55:45 to about 80:20. The resin is characterized by a resistance to irreversible dehydration upon exposure to harsh chemicals and by retention of hydroxide functionality upon aging. A resin composition comprising a copolymer lacking compositional drift is also provided for preparation of an oil and grease barrier coating, an oxidation resistant water soluble package, or a battery separator.
    Type: Application
    Filed: July 22, 2011
    Publication date: November 24, 2011
    Inventor: Richard Vieari
  • Publication number: 20110230567
    Abstract: A cryogel-forming vinyl alcohol co-polymer is operable to form a cryogel, i.e., a hydrogel formed by crytropic gelation, in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier. In one embodiment, a vinyl alcohol co-polymer cryogel comprises at least about 75% by weight water and a vinyl alcohol co-polymer, wherein the vinyl alcohol co-polymer is operable to form a cryogel in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier.
    Type: Application
    Filed: September 14, 2009
    Publication date: September 22, 2011
    Inventors: Maria Stromme, Albert Mihranyan
  • Patent number: 7977427
    Abstract: The invention provides a method comprising the steps of (i) reacting a water-soluble and non-peptidic polymer having two or more terminal hydroxyl groups with di(1-benzotriazolyl)carbonate to form a water-soluble and non-peptidic polymer having two or more 1-benzotriazolylcarbonate ester groups; and (ii) reacting the water-soluble and non-peptidic polymer having two or more 1-benzotriazolylcarbonate ester groups with a water-soluble and non-peptidic polymer having three or more primary amino groups under conditions effective to form a cross-linked polymer composition.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: July 12, 2011
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Publication number: 20110126497
    Abstract: A method for producing a biodegradable plastic film or a composite film, and the film obtained by such method. The film has barrier properties and is made at least of a biodegradable basic plastic material and a second plastic material having barrier properties. The film is useful in particular for packaging sensitive goods.
    Type: Application
    Filed: May 15, 2007
    Publication date: June 2, 2011
    Applicant: HUHTAMAKI FORCHHEIM ZWEIGNIEDERLASSUNG DER HUHTAMAKI DEUTSCHLAND GMBH & CO
    Inventors: Michael Bauer, Karl Mauser, Roland Kelm, Kurt Stark
  • Patent number: 7928166
    Abstract: There is disclosed a polyvinyl alcohol having a 1,2-glycol bond in a side chain, and a process for preparing the polyvinyl alcolnol wherein there is no generation of dimethyl carbonate hence no need of a process of eliminating dimethyl carbonate in the recovering process of waste liquid after hydrolysis. Also, even when an introduction amount of 1,2-glycol bonds is increased, there is no deterioration of solubility in a hydrolyzing solution (methanol) of a copolymer (paste) before hydrolysis. Further, water-insolubility is not lowered even in experiencing thermal history. Specifically, there is provided a polyvinyl alcohol having a 1,2-glycol bond in a side chain obtained by hydrolyzing a copolymer of a vinyl ester monomer and a compound shown in the formula (1) wherein the hydrolysis degree of the polyvinyl alcohol is at least 60% by mol.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 19, 2011
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Mitsuo Shibutani
  • Patent number: 7915341
    Abstract: 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: Grant
    Filed: December 17, 2004
    Date of Patent: March 29, 2011
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Mitsuo Shibutani, Takamasa Moriyama, Kaoru Inoue, Shinta Miyazumi, Ikko Matsui
  • Publication number: 20110024015
    Abstract: An object of the present invention is to provide: a film which is applicable to a tire, has excellent gas barrier properties and bending resistance, allows weight of a tire to be reduced with improving internal pressure retainability of the tire at both the brand-new stage and the used stage thereof, and is capable of demonstrating good gas barrier properties without breaking especially in a running condition at a relatively low temperature in winter time or the like; an inner liner for tire, using the film; and a tire provided with the inner liner for tire. The film of the present invention comprises at least a layer composed of resin composition (D) produced by dispersing viscoelastic substance (C) in a resin containing modified ethylene-vinyl alcohol copolymer (B) obtained by subjecting ethylene-vinyl alcohol copolymer (A) to a reaction, wherein 100% modulus at ?30° C. of the viscoelastic substance (C) is smaller than 6 MPa.
    Type: Application
    Filed: March 31, 2009
    Publication date: February 3, 2011
    Applicants: BRIDGESTONE CORPORATION, KURARAY CO., LTD
    Inventors: Yuwa Takahashi, Daisuke Nohara, Daisuke Nakagawa, Kouta Isoyama
  • Patent number: 7834089
    Abstract: Disclosed are compositions of ethylene acid copolymers and EVOH that are useful for fabricating films, sheets and other shaped articles such as tubing, bottle, fuel tank, tray etc. comprising (1) an ethylene vinyl alcohol copolymer; and (2) a copolymer comprising in-chain copolymerized units of (a) in-chain copolymerized units of ethylene; (b) in-chain polymerized units of an ?,?-unsaturated C3-C8 carboxylic acid; (c) in-chain polymerized units of at least one comonomer that is an ethylenically unsaturated dicarboxylic acid or derivative thereof; and optionally (d) in-chain copolymerized units of alkyl acrylate or alkyl methacrylate, and wherein the carboxylic acid functionalities present are at least partially neutralized by one or more alkali metal, transition metal, or alkaline earth metal cations. The compositions can be used for packaging of foodstuffs, medical solutions and industrial chemicals.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: November 16, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: David D. Zhang
  • Publication number: 20100280178
    Abstract: 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: Application
    Filed: May 10, 2010
    Publication date: November 4, 2010
    Applicant: Kuraray Co., Ltd.
    Inventors: Kaoru IKEDA, Shinji Tai, Kouta Isoyama, Tomoyuki Watanabe
  • Patent number: 7811646
    Abstract: 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: Grant
    Filed: May 13, 2002
    Date of Patent: October 12, 2010
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Shinji Tai, Kouta Isoyama, Tomoyuki Watanabe
  • Patent number: 7781506
    Abstract: 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: Grant
    Filed: January 26, 2007
    Date of Patent: August 24, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: David C. Urian, Peter A. Morken, Donna Lynn Visioli