Solid Polymer Derived From At Least One Lactam; From An Amino Carboxylic Acid Or Derivative; Or From A Polycarboxylic Acid Or Derivative Patents (Class 525/419)
  • Patent number: 10925996
    Abstract: A biocompatible, covalently cross-linked, polymer that is obtained by reacting an electrophilically activated polyoxazoline (EL-POX) with a nucleophilic cross-linking agent is disclosed. The EL-POX comprises m electrophilic groups; and the nucleophilic cross-linking agent comprises n nucleophilic groups, wherein the m electrophilic groups are capable of reacting with the n nucleophilic groups to form covalent bonds; wherein m?2, n?2 and m+n?5; wherein at least one of the m electrophilic groups is a pendant electrophilic group and/or wherein m?3; and wherein the EL-POX comprises an excess amount of electrophilic groups relative to the amount of nucleophilic groups contained in the nucleophilic cross-linking agent. Biocompatible medical products and kits comprising the cross-linked POX-polymers are also disclosed.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: February 23, 2021
    Assignee: GATT TECHNOLOGIES BV
    Inventors: Richard Hoogenboom, Johannes Caspar Mathias Elizabeth Bender, Jan Cornelis Maria Van Hest
  • Patent number: 10851206
    Abstract: A modified nylon 66 fiber including a first repeating unit derived from adipic acid and hexamethylenediamine, a second monomer unit derived from a diacid or a diamine having a long carbon chain, a third monomer unit derived from a diacid or a diamine having a aromatic ring, and a fourth monomer unit derived from a cyclic diacid or a cyclic diamine is provided. The second monomer unit has 6 to 36 carbon atoms. The third monomer unit has 8 to 14 carbon atoms. The fourth monomer unit has 6 to 10 carbon atoms. Based on a total weight of the modified nylon 66 fiber, a content of the first repeating unit is 78 wt % to 94.8 wt %, a content of the second monomer unit is 0.1 wt % to 1 wt %, a content of the third monomer unit is 5 wt % to 20 wt %, a content of the fourth monomer unit is 0.1 wt % to 1 wt %.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 1, 2020
    Assignee: Taiwan Textile Research Institute
    Inventors: Tzu-Chung Lu, Chin-Wen Chen, Wei-Hsiang Lin, Chao-Huei Liu, Po-Hsun Huang, Wei-Jen Lai
  • Patent number: 10844221
    Abstract: Provided is a composition including (A) 65% to 95% of a polyamide mixture, (B) 7% to 30% of at least one impact modifier or of at least one core-shell entity or of a mixture thereof, and (C) 0 to 5% of at least one additive chosen from stabilizers, dyes, plasticizers, fibers, fillers, processing aids or a mixture thereof. The composition may be used, for example, to produce an article by extruding, injection molding, molding or thermoforming.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: November 24, 2020
    Assignee: Arkema France
    Inventors: Mathieu Sabard, Regis Cipriani, Karine Loyen, Helena Cheminet, René-Paul Eustache
  • Patent number: 10774179
    Abstract: The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: September 15, 2020
    Assignee: Econic Technologies Ltd.
    Inventors: Michael Kember, Rakibul Kabir, Charlotte Katherine Williams
  • Patent number: 10683393
    Abstract: The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles of polymer materials using 3D printing. A syringe or an inkjet print head prints a solution of prepolymer onto a build plate. The printed prepolymer is exposed to a stimulus whereby the prepolymer is converted to the polymer. After a predetermined time, sequential layers are printed to provide the three-dimensional article. The three-dimensional article can be cured to produce the 3D article made from the final polymer.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: June 16, 2020
    Assignees: Ricoh Co., Ltd., University of Washington
    Inventors: Andrew J. Boydston, Mark A. Ganter, Duane Storti, Adam Edward Goetz, Mete Yurtoglu, Michael Byrnes Larsen, Gregory Isaac Peterson, Di Zhang
  • Patent number: 10675376
    Abstract: Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 9, 2020
    Assignee: Ethicon LLC
    Inventors: Modesto Erneta, Daniel Steiger, Dennis D. Jamiolkowski
  • Patent number: 10259989
    Abstract: Provided is a well-treatment fluid that reduces a load on the environment. A well-treatment fluid containing a non-ionic polyamino acid derivative including an ?-type or ?-type polyaspartic acid monomer unit represented by Formula (I) and an ?-type or ?-type polyaspartic acid monomer unit represented by Formula (II).
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: April 16, 2019
    Assignee: KUREHA CORPORATION
    Inventor: Shunsuke Abe
  • Patent number: 10040878
    Abstract: The present invention relates to a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a method of preparing the same. The generation of the dehydrochlorination of the vinyl chloride polymer due to heat or ultraviolet rays may be markedly restrained, the thermal stability thereof may be improved, and the discoloration thereof or the modification of the physical properties thereof may be prevented. In addition, a modifier may be introduced to a polymerization process at the end of the polymerization, and high thermal stability may be attained without generating the transformation of the vinyl chloride polymer.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: August 7, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Kyung Seog Youk, Hyun Min Lee, Chan Hee Lee, Heung Kwon Bae, Kwang Jin Lee, Kyung Hyun Kim, Jung Rae Lee
  • Patent number: 10004590
    Abstract: Improved breast prostheses, methods of making breast prostheses, and methods of treatment using such breast prostheses are described.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: June 26, 2018
    Assignee: LifeCell Corporation
    Inventors: Dhanuraj Shetty, Aaron Barere, Evan Friedman, Melissa Richter Bowley, Timothy Roock
  • Patent number: 9828478
    Abstract: A method of forming a polymer matrix composite using a soluble derivative of a poly (aryl ether ketone) (PAEK). The method includes mixing a starting PAEK polymer with a solvent and an acid, said solvent being selected from a group consisting of diethylether, tetrahydrofuran (THF), dioxin, and chlorinated solvents; reacting the PAEK mixture with a Lewis acid and a thiol compound in amounts effective to form a poly (aryl ether thioacetal) compound which comprises at least one thioacetal group; and impregnating a plurality of fibers in a solution comprising said poly (aryl ether thioacetal) compound.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: November 28, 2017
    Assignee: CYTEC TECHNOLOGY CORP.
    Inventors: Howard Matthew Colquhoun, Patrick Terence McGrail, Francois Pierre Vincent Paoloni, Philip Hodge, Ioannis Manolakis, Paul Mark Cross
  • Patent number: 9816032
    Abstract: The invention relates to a liquid crystal alignment agent which provides a polymer composition (A), a solvent (B), and a poly(oxyalkyleneglycol)dialkylether compound (C); wherein the number average molecular weight of the poly(oxyalkyleneglycol)dialkylether compound (C) is from 250 to 2000. The invention also provides a liquid crystal alignment film made by the liquid crystal alignment agent as mentioned above and a liquid crystal display element which provides the liquid crystal alignment film, and the liquid crystal display element has high voltage holding rate and low ion density.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: November 14, 2017
    Assignee: CHI MEI CORPORATION
    Inventor: Li-Tao Hsu
  • Patent number: 9758395
    Abstract: Lysine-based polymers, particularly copolymers of lysine and maleic acid, are useful as coagulants for clarification of wastewaters, including produced waters from oils sands mining operations. They can be advantageously used in combination with commercial coagulants, and in combination with flocculants. Such combinations may include dry blends. Also described are methods of preparation of lysine homopolymers and copolymers.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: September 12, 2017
    Assignee: Aquero Company, LLC
    Inventor: C. Steven Sikes
  • Patent number: 9695280
    Abstract: The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles of polymer materials using 3D printing. A syringe or an inkjet print head prints a solution of prepolymer onto a build plate. The printed prepolymer is exposed to a stimulus whereby the prepolymer is converted to the polymer. After a predetermined time, sequential layers are printed to provide the three-dimensional article. The three-dimensional article can be cured to produce the 3D article made from the final polymer.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: July 4, 2017
    Assignees: Ricoh Co., Ltd., University of Washington
    Inventors: Andrew J. Boydston, Mark A. Ganter, Duane Storti, Adam Edward Goetz, Mete Yurtoglu, Michael Byrnes Larsen, Gregory Isaac Peterson, Di Zhang
  • Patent number: 9517287
    Abstract: The present invention provides a hemostatic composite sponge comprising a porous matrix of a biomaterial and a material enhancing the adherence of said sponge to the applied tissue stably associated with at least one surface of said sponge, a method of producing these sponges and their use in hemostasis.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: December 13, 2016
    Assignees: Baxter International, Inc., Baxter Healthcare, S.A.
    Inventors: Hans Christian Hedrich, Joris Hoefinghoff, Woonza M. Rhee, Atsushi Edward Osawa
  • Patent number: 9453104
    Abstract: The present invention provides a novel catalyst of formula (I): wherein M is selected from Zn(H), Co(II), Mn(II), Mg(II), Fe(II), Cr(III)-X or Fe(III)-X, and the use thereof in polymerizing carbon dioxide and an epoxide.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: September 27, 2016
    Assignee: Imperial Innovations Limited
    Inventors: Charlotte K. Williams, Michael Kember, Paul Knight
  • Patent number: 9238717
    Abstract: A non-leaching mediator may include a polymer comprising the general formula (VIII): and salts thereof, where R? is an organic group, m is 0 or 1, n is about 9, and x and y independently are an integer from 1 to 10,000.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: January 19, 2016
    Assignee: BAYER HEALTHCARE LLC
    Inventors: Jiangfeng Fei, William Chiang, Frank Kerrigan, Stuart Green, Craig Robson, Howard Easterfield
  • Patent number: 9150693
    Abstract: Described is the preparation of sulfonated polyoxadiazole polymers with a high degree of sulfonation and good flammability properties. The polymers are useful in articles such as fibers.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: October 6, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Peter A Brown, Justin W. Chan, Michael W Cobb, Sharlene Renee Williams
  • Patent number: 9089495
    Abstract: The present invention relates to hair treatment agents containing a synergistic combination of selected fatty acid amides and oil bodies selected from ester oils and vegetable oils.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: July 28, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventor: Marcus Krueger
  • Patent number: 9066879
    Abstract: Hair treatment agents include a synergistic combination of selected fatty acid amides and selected silicones.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: June 30, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventor: Marcus Krueger
  • Patent number: 9066878
    Abstract: The present invention relates to hair treatment agents including a synergistic combination of selected fatty acid amides and further selected hydroxycarboxylic acids.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: June 30, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventor: Marcus Krueger
  • Patent number: 9060954
    Abstract: Hair treatment agents include a synergistic combination of selected fatty acid amides and further selected hydroxycarboxylic acids.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: June 23, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventor: Marcus Krueger
  • Patent number: 9057917
    Abstract: A liquid crystal display panel, including: a pixel electrode formed on a first substrate; an alignment layer formed on the pixel electrode, wherein the alignment layer includes an alignment layer material and aligns first liquid crystal molecules in a direction substantially perpendicular to the pixel electrode; and a photo hardening layer formed on the alignment layer, wherein the photo hardening layer includes a photo hardening layer material and aligns second liquid crystal molecules to be tilted with respect to the pixel electrode, wherein the alignment layer material and the photo hardening layer material have different polarities from each other.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: June 16, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
  • Publication number: 20150147549
    Abstract: The present invention relates to a polylactic acid resin which is environment-friendly and is useful as a packaging material due to its properties including excellent heat resistance and flexibility, and a packaging film comprising the same. The polylactic acid resin comprises a hard segment comprising a polylactic acid repeating unit; and a soft segment comprising a polyurethane polyol repeating unit in which polyether polyol repeating units are linearly linked via a urethane bond, wherein the polylactic acid resin has an organic carbon content (% Cbio) from the biomass source of 60 wt % or more.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 28, 2015
    Applicant: SKI CHEMICALS CO.,LTD.
    Inventors: Young-Man Yoo, Jae-Il Chung, Tae-Woong Lee, Kye Yune Lee, Sung-Wan Jeon
  • Patent number: 9030762
    Abstract: The present invention relates to a polyester resin including a diol constitutional unit and a dicarboxylic acid constitutional unit as main constitutional units, in which the diol constitutional unit contains from 70 to 95% by mol of a constitutional unit derived from ethylene glycol and from 5 to 30% by mol of a constitutional unit derived from tricyclodecane dimethanol or pentacyclopentadecane dimethanol, and the dicarboxylic acid constitutional unit contains 50% by mol or more of a constitutional unit derived from a naphthalenedicarboxylic acid, and an optical lens obtained by molding the polyester resin. According to the present invention, there are provided a polyester resin that has a high refractive index and a low Abbe number and can be molded into a good optical lens, and an optical lens obtained by molding the polyester resin.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takuya Minezaki, Takeshi Hirokane
  • Patent number: 9023953
    Abstract: A method of producing a poly(lactic acid) resin includes carrying out direct polycondensation using lactic acid as a main raw material to prepare a crystallized prepolymer having a weight average molecular weight of 5,000 to 25,000, an enthalpy of fusion ?Hm of 50 to 65 J/g and an acid value A mol/ton satisfying (1) below: 450/(Mw/10,000?0.14)<A<950/(Mw/10,000?0.14)??(1) (wherein Mw represents weight average molecular weight of the crystallized prepolymer); and subjecting the crystallized prepolymer to solid-phase polymerization.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: May 5, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Tatsuya Nagano, Tsuyoshi Tanaka, Hiroyuki Ome
  • Patent number: 9017805
    Abstract: The present disclosure relates to a polyimide-graphene composite material and a method for preparing same. More particularly, it relates to a polyimide-graphene composite material prepared by adding modified graphene and a basic catalyst during polymerization of a polyimide precursor so as to improve mechanical strength and electrical conductivity and enable imidization at low temperature and a method for preparing same.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: April 28, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Nam Ho You, Ok-kyung Park, Bon-Cheol Ku, Joong Hee Lee, Munju Goh
  • Publication number: 20150104380
    Abstract: The present invention relates to a biodegradable carrier for carrying a radioisotope, which is formed from at least one biodegradable polymer selected from the group consisting of poly(lactic-co-glycolic acid) (PLGA), poly(lactic acid) (PLA), poly(?-caprolactone) (PCL), chitosan, poly(?-glutamic acid) (PGA), and polyethylene glycol (PE) in which its hydroxyl group is substituted with an amino group and grafted with tetraazocyclododecanetetraacetic acid monosuccinimide ester (DOTA-NHS), in which nitrogen atoms contained in the DOTA-NHS are provided for coordinating with a radioisotope. The present invention also relates to a kit which includes a first container containing the biodegradable carrier for carrying a radioisotope according to the present invention and a second container containing a radioisotope.
    Type: Application
    Filed: July 18, 2014
    Publication date: April 16, 2015
    Inventors: LIANG-YU CHANG, TSAI-YUEH LUO, MIN-SHENG PU, PING-FANG CHIANG, HUA-MIN WANG, YING-HSIA SHIH
  • Patent number: 9006347
    Abstract: The invention provides a process for the synthesis of a polycarbonate, the process comprising the step of reacting carbon dioxide with at least one epoxide in the presence of a catalyst of formula (I) and a chain transfer agent. The invention also provides a polymerization system for the copolymerization of carbon dioxide and at least one epoxide comprising a catalyst of formula (I) and a chain transfer agent, polycarbonates produced by the inventive process, a block copolymer comprising a polycarbonate produced by the inventive process, and a method of producing the block copolymer. The invention also relates to novel catalysts of formula (III).
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: April 14, 2015
    Assignee: Imperial Innovations Limited
    Inventors: Charlotte K. Williams, Michael Kember, Antoine Buchard, Fabian Jutz
  • Patent number: 9006254
    Abstract: This invention relates to compositions, and related compounds and methods, of conjugates of immunomodulatory agents and polymers or unit(s) thereof. The conjugates may be contained within synthetic nanocarriers, and the immunomodulatory agents may be released from the synthetic nanocarriers in a pH sensitive manner.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 14, 2015
    Assignee: Selecta Biosciences, Inc.
    Inventors: Charles Zepp, Grayson B. Lipford, Yun Gao, Lloyd Johnston, Fen-ni Fu, Mark J. Keegan, Sam Baldwin
  • Patent number: 9000102
    Abstract: The invention is directed to a process for preparing a linear or branched amine-modified thermoplastic resin with high flowability using as starting materials a linear or branched polyester and a primary or secondary aliphatic amine. The process does not require that the amine and polyester be combined in a liquid organic solvent during the process, and can be performed readily at ambient pressure. The amine-modified resins can be extruded and pelletized using normal operating conditions, making this process a versatile option for achieving a wide variety of viscosities in a simple, low cost, continuous operation.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 7, 2015
    Assignee: SABIC Global Technologies B.V.
    Inventor: Robert R. Gallucci
  • Publication number: 20150057385
    Abstract: Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains, D-type polylactide polymer containing a small amount of caprolactone (poly D-lactide-caprolactone copolymer) is synthesized and it is uniformly mixed with L-type single-phase polylactide to prepare a flexible polylactide stereocomplex. Since the polylactide stereocomplex having flexible polymer chains has superior heat resistance and mechanical stability and experiences little decrease of the degree of stereocomplex formation even after thermal processing, the polylactide stereocomplex having improved thermal stability can be advantageously used for engineering plastics requiring high strength and good thermal stability, alternative materials for general-use plastics, high-performance medical materials, or the like because of its remarkably improved processability.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 26, 2015
    Inventors: Chae Hwan Hong, Do Suck Han, Soo Hyun Kim, Young Mee Jung
  • Patent number: 8962769
    Abstract: The present invention relates to novel polyimidothioethers-inorganic nanoparticle hybrid material, which exhibit good surface planarity, thermal dimensional stability, tunable refractive index, and high optical transparency upon forming into films. The present invention also relates to polyimidothioethers which is an intermediate for preparing the present hybrid material, and their preparation.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: February 24, 2015
    Assignee: National Taiwan University
    Inventors: Guey-Sheng Liou, Chia-Liang Tsai, Hung-Ju Yen, Wen-Chang Chen, Wen-Yen Chiu, Yang-Yen Yu
  • Patent number: 8962566
    Abstract: Among other aspects, provided herein are multi-armed polymer conjugates comprising an alkanoate-linker, compositions comprising such conjugates, and related methods of making and administering the same. Methods of treatment employing such conjugates and related uses are also provided. The conjugates are prepared with high drug loading efficiencies.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Nektar Therapeutics
    Inventors: Antoni Kozlowski, Samuel P. McManus, Jennifer Riggs-Sauthier, Xiaoming Shen, Wen Zhang
  • Publication number: 20150048539
    Abstract: A xylylenediamine-based polyamide resin/fiber composite material and molding are provided that do not exhibit a decline in properties under high temperatures and high humidities, and that exhibit a high elastic modulus and present little warping, and exhibit better recycle characteristics, a better moldability, and a better productivity than for thermosetting resins. The polyamide resin-type composite material comprises a fibrous material (B) impregnated with a polyamide resin (A) wherein at least 50 mole % of diamine structural units derived from xylylenediamine, and having a number-average molecular weight (Mn) of 6,000 to 30,000, and containing a component of a molecular weight of not more than 1,000 at 0.5 to 5 mass %.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 19, 2015
    Applicant: Mitsubishi Gas Chemical Company, Inc.
    Inventor: Jun MITADERA
  • Patent number: 8956732
    Abstract: A polyamide-imide resin obtained by a process comprising the step of reacting an aromatic diisocyanate with a diimide dicarboxylic acid containing 40 mol % or more of a compound represented by the following general formula (1) and 20 mol % or more of a compound represented by the following general formula (2).
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: February 17, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masaki Takeuchi, Katsuyuki Masuda, Kenichi Tomioka, Takako Ejiri
  • Publication number: 20150045451
    Abstract: The present invention provides new classes of phenolic compounds derived from hydroxyacids and tyrosol or tyrosol analogues, useful as monomers for preparation of biocompatible polymers, and the biocompatible polymers prepared from these monomeric hydroxyacid-phenolic compounds, including novel biodegradable and/or bioresorbable polymers. These biocompatible polymers or polymer compositions with enhanced bioresorbabilty and processibility are useful in a variety of medical applications, such as in medical devices and controlled-release therapeutic formulations. The invention also provides methods for preparing these monomeric hydroxyacid-phenolic compounds and biocompatible polymers.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Inventors: Durgadas Bolikal, Joachim B. Kohn, Lioubov Kabalnova
  • Patent number: 8952126
    Abstract: A method of making a pure block copolymer includes forming a crude block copolymer; heating a solution of the crude block copolymer and alcohol; and cooling the solution to promote precipitation of a purified block copolymer, wherein an amount of impurities remaining in the purified block copolymer is from about 0 to about 5 wt % based on a total weight of the purified block copolymer; a ratio of a polydispersity index of the crude block copolymer to a polydispersity index of the purified block copolymer is from about 1.02 to about 1.25; a ratio of a molecular weight of the crude block copolymer to a molecular weight of the purified block copolymer is from about 0.75 to about 1.0; and a ratio of a number average molecular weight of the crude block copolymer to a number average molecular weight of the purified block copolymer is from about 0.65 to about 1.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 10, 2015
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Andrew J. Myles, Karen A. Moffat, Jordan H. Wosnick, Valerie M. Farrugia
  • Patent number: 8952106
    Abstract: The present invention is directed to linear, biodegradable polyesteramide (PEA) polymers synthesized with repeating units derived from aminophenol esters and diacids. These PEAs have a monomer repeat represented by as well as a variety of uses to coat, form or comprise medical devices, combination medical devices and pharmaceutical compositions, including sustained release formulations.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: February 10, 2015
    Assignee: TYRX, Inc.
    Inventors: Arthur Schwartz, Satish Pulapura, Sarita Nethula, Archana Rajaram, Arikha Moses
  • Publication number: 20150038641
    Abstract: The present invention relates to phosphoric acid derivatives, which are present as urea urethanes and contain a radical with an affinity for the binder in addition to at least one phosphoric acid ester group. Said phosphoric acid derivatives are especially suitable as wetting agents and dispersants.
    Type: Application
    Filed: May 4, 2012
    Publication date: February 5, 2015
    Applicant: BYK-CHEMIE GMBH
    Inventors: Bernd Göbelt, Rene Nagelsdiek, Jürgen Omeis, Frederik Piestert, Wolfgang Pritschins, Natasa Meznaric, Daniela Schröder, Werner Tiegs
  • Publication number: 20150038651
    Abstract: Provided are novel dinuclear indium catalysts of formula (A) that are capable of living and immortal ring opening polymerization and copolymerization of cyclic ester monomers for the preparation of biodegradable polymers and copolymers, in particular polyesters. Also disclosed are polymerization methods and polymer products. These dinuclear indium catalysts allow less costly, highly reactive living polymerization of cyclic ester monomers with possible high turn over rates and/or substantial stereo chemical and microstructure control.
    Type: Application
    Filed: May 18, 2012
    Publication date: February 5, 2015
    Applicant: University of British Columbia
    Inventors: Parisa Mehrkhodavandi, Insun Yu, J. Alberto Acosta-Ramirez
  • Publication number: 20150037419
    Abstract: Functional PLA-PEG copolymers, the nanoparticles thereof, their preparation and use for targeted drug delivery and imaging The present invention concerns novel functional PEG-PLA containing copolymers, the nanoparticles containing the same, their process of preparation and their use for site specific targeted drug delivery and imaging.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 5, 2015
    Inventors: Didier Bazile, Patrick Couvreur, Harlvardhan Reddy Lakkireddy, Nicolas Mackiewicz, Julien Nicolas
  • Publication number: 20150024322
    Abstract: There is provided a toner binder containing a polyester resin (P) composed of two or more polyester resins that are each obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y). The alcohol component (y) of at least one polyester resin (P1) constituting the polyester resin (P) comprises 30 to 100 molar % of an adduct (y1) of bisphenol A with 2 to 4 ethylene oxide molecules. The alcohol component (y) of at least one other polyester resin (P2) constituting the polyester resin (P) comprises 50 to 95 molar % of an aliphatic diol (y2) having 2 to 4 carbon atoms. The (P2) is other than the (P1), and the polyester resin (P) satisfies relationships as follows. 11.5?SP value [(cal/cm3)1/2] of (P)?13.0; and 5.2?HLB value (according to the Oda method) of (P)?7.1.
    Type: Application
    Filed: February 25, 2013
    Publication date: January 22, 2015
    Applicant: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuko Sugimoto, Keisuke Miyamoto, Masaru Honda
  • Patent number: 8937135
    Abstract: The present invention relates to biodegradable polymer mixtures comprising i) 40% to 95% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds; ii) 5% to 60% by weight, based on the total weight of said components i to ii, of polyalkylene carbonate, particularly polypropylene carbonate; iii) 0% to 60% by weight, based on the total weight of said components i to iii, of at least one biodegradable homo- or copolyester selected from the group consisting of polylactic acid, polycaprolactone and polyhydroxyalkanoate, and/or of an inorganic or organic filler; iv) 0% to 10% by weight, based on the total weight of said components i to ii, of an epoxy-containing copolymer based on styrene, acrylic ester and/or methacrylic ester, and v) 0% to 15% by weight of an additive selected from the group consisting of lubricant, antiblocking agent, antistat, UV absorber, UV stabilizer, thermal stabil
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: January 20, 2015
    Assignee: BASF SE
    Inventors: Tobias Heinz Steinke, Hans-Helmut Görtz, Jürgen Ahlers, Freddy Gruber, Gabriel Skupin
  • Patent number: 8920788
    Abstract: Disclosed is a water-soluble high-molecular weight conjugate of physiologically active substances which enable medicament to release without depending on the enzymes in a living body and which is expected to have a useful therapeutic effect. A high-molecular weight conjugate of a physiologically active substance has a substituent group represented by a general formula (1) bonded to a side-chain carboxy group of a block copolymer which has a polyethylene glycol moiety and either a polyaspartic acid moiety or a polyglutamic acid moiety.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: December 30, 2014
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masayuki Kitagawa, Chieko Seno
  • Patent number: 8911760
    Abstract: The present invention pertains to copolymers having one or more polyisobutylene segments and one or more biodegradable polymer segments, to methods of making such copolymers, to medical articles that contain such copolymers, and to methods of making such medical articles. According to certain aspects of the invention, copolymers are provided, which comprise a plurality of polyisobutylene segments and a plurality of biodegradable polymer segments. According to certain aspects of the invention, copolymers are provided, which comprise urethane linkages, urea linkages, amide linkages, ester linkages, anhydride linkages, carbonate linkages, linkages commonly described as “click” chemistry linkages, and combinations of two or more types of such linkages.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 16, 2014
    Assignees: Boston Scientific Scimed, Inc., The University of Massachusetts Lowell
    Inventors: Mark Boden, Marlene C. Schwarz, Frederick H. Strickler, Rudolf Faust, Umaprasana Ojha, Tomoya Higashihara
  • Publication number: 20140363687
    Abstract: An aqueous polyimide precursor solution composition in which a polyamic acid which is obtained by reacting a tetracarboxylic acid component and a diamine component is dissolved in an aqueous solvent together with an imidazole in an amount of 1.6 moles or more per mole of the tetracarboxylic acid component of the polyamic acid.
    Type: Application
    Filed: January 10, 2013
    Publication date: December 11, 2014
    Inventors: Takeshige Nakayama, Susumu Takasaki, Tomonori Nakayama, Kensuke Hiroshige
  • Patent number: 8901257
    Abstract: Flexible members for use in imaging devices comprise a polyphenylsulfone and a polyetherimide; and optionally, a polysiloxane surfactant.
    Type: Grant
    Filed: February 12, 2011
    Date of Patent: December 2, 2014
    Assignee: Xerox Corporation
    Inventor: Jin Wu
  • Publication number: 20140342628
    Abstract: The invention relates to navel thermoplastic (co)polyimides and to the methods of synthesis thereof. The invention specifically relates to semi-aromatic thermoplastic (co)polyimides obtained by polymerisation of at least one aromatic compound comprising two anhydride functions and/or the derivatives thereof, especially carboxylic acid and/or ester, and at least one diamine of formula (I) NH2—R—NH2 wherein R is a saturated aliphatic hydrocarbonated divalent radical, the two amine functions thereof being separated by 4 to 6 carbon atoms, and 1 or 2 hydrogen atoms of the divalent radical being substituted by 1 or 2 methyl and/or ethyl groups. Said (co)polyimides can be transformed into plastic items by various methods such as extrusion, moulding or blowing.
    Type: Application
    Filed: September 18, 2012
    Publication date: November 20, 2014
    Inventor: Stéphane Jeol
  • Publication number: 20140341835
    Abstract: The present invention relates to a process for producing a hydroxy amino polymer comprising the steps: a) Reaction of an H functional starter compound bearing at least one Zerewitinoff active H atom with an unsaturated, cyclical carboxylic acid anhydride and at least one alkylene oxide compound for obtaining a prepolymer bearing hydroxyl groups, b) Addition of a primary amine and/or of ammonia to the double bond(s) of the prepolymer bearing hydroxyl groups obtained according to step a) for obtaining the hydroxy amino polymer, wherein the ratio of added amino groups to hydroxyl groups in a hydroxy amino polymer is at least 0.6. Furthermore, the invention relates to a hydroxy amino polymer, which can be achieved according to this process as well as a polyurea/polyurethane system, which contains such a hydroxy amino polymer.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 20, 2014
    Inventors: Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz, Edward Browne, Hartmut Nefzger
  • Patent number: 8889256
    Abstract: Woven, knit, and non-woven fabrics, and garments and other textile goods fabricated therefrom, are prepared from yarns comprising fibers comprising a fluorinated polyester blend prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The goods so produced exhibit durable soil, oil, and water repellency.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: November 18, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Dennis Gerard Madeleine, Fredrik Nederberg