Treating Polymer Containing Material Or Treating A Solid Polymer Or A Resinifiable Intermediate Condensation Product Patents (Class 528/480)
  • Patent number: 12017383
    Abstract: The invention relates to a method for separating waste polyurethane foams, wherein for each polyurethane sample (1) of a supply stream (2) comprising polyurethane samples (1) from waste at least one respective spectrum (3) is recorded, wherein the at least one respective spectrum (3) is recorded by near-infrared spectroscopy, wherein each polyurethane sample (1) of the supply stream (2) is classified by a classification algorithm (5), which classification algorithm (5) is based on machine learning, based on the respective at least one spectrum (3) into a respective class (8a-e) of at least two classes (8a-e), wherein the supply stream (2) comprising polyurethane samples (1) is separated into at least two streams (11a-e) according to the classification into the respective class (8a-e) and wherein each class (8a-e) corresponds to a type of polyurethane. The invention also relates to a system for separating waste polyurethane foams.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: June 25, 2024
    Assignees: COVESTRO DEUTSCHLAND AG, RECTICEL ENGINEERED FOAMS BELGIUM
    Inventors: Sascha Froebel, Torsten Heinemann, Robert Grimm, Katharina Ander, Franz Siegl, Jan Willems, Isabel Verlent, Joke De Geeter
  • Patent number: 11976154
    Abstract: In at least one embodiment, a devolatilization vessel includes a first set of one or more devolatilization plates and a second set of one or more devolatilization plates. A first distributor is above the first set of one or more devolatilization plates and the second set of one or more devolatilization plates. A second distributor is above the second set of one or more devolatilization plates. In at least one embodiment, a process of forming a polymer includes forming a first polymer solution having a first viscosity and forming a second polymer solution having a second viscosity. The process includes flowing the first polymer solution and the second polymer solution to a devolatilization vessel. The process includes removing volatiles from the first polymer solution and the second polymer solution in the devolatilization vessel to form a devolatilized first polymer melt and a devolatilized second polymer melt.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 7, 2024
    Assignee: ExxonMobil Engineering & Technology Company
    Inventors: Michael K. Lyon, Hamidreza Khakdaman, Trevan D. MacArthur, Adrian Strehler, Claudio Walker
  • Patent number: 11931921
    Abstract: An extruder including a housing, a first material inlet for a mixture at least consisting of a solvent and a dissolved medium, a material outlet, a screw, a screw drive, and at least one distillation region between the inlet and the outlet, which allows an outflow of solvent, and a discharge line for the solvent.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 19, 2024
    Assignee: DOMO ENGINEERING PLASTICS GMBH
    Inventors: Hans-Jürgen Gnam, Renè Gloor, Tamer Balikavlayan
  • Patent number: 11834465
    Abstract: Method for the production of tetrakis(trihydrocarbylphosphane)palladium(0) in organic solvent, whereby 50 to 100% by weight of the organic solvent consist of at least one polar-aprotic solvent, characterised in that a) at least one palladium compound selected from the group consisting of palladium(II) compounds and palladium(IV) compounds that are soluble in the organic solvent is reacted with b) at least one base, selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, alkali metal hydrogen carbonates, alkali metal-C1-C4-alcoholates, ammonium carbonate, ammonium hydrogen carbonate, alkaline earth metal hydroxides, alkaline earth metal carbonates, alkaline earth metal hydrogen carbonates, alkaline earth metal-C1-C4-alcoholates, and alkylamines with a total of 2 to 12 carbon atoms; c) at least one trihydrocarbylphosphane; and d) at least one organic reducing agent that is different from the remaining components that are used in the method.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: December 5, 2023
    Assignee: HERAEUS DEUTSCHLAND GMBH & CO. KG
    Inventors: Florian Eweiner, Walter Lässig, Richard Walter
  • Patent number: 11820876
    Abstract: The present disclosure relates to a method for making a non-isocyanate polyurethane (NIPU) foam, where the method includes decomposing a blowing agent having at least one of an amine carbamate salt and/or an amine bicarbonate salt to form a diamine and CO2 in the presence of a molecule comprising a plurality of cyclic carbonate functional groups and reacting the diamine with at least a portion of the cyclic carbonate functional groups to form the NIPU foam. In some embodiments of the present disclosure, the reacting and the decomposing may occur at substantially the same rate.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: November 21, 2023
    Assignee: Alliance for Sustainable Energy, LLC
    Inventors: Tao Dong, Philip T. Pienkos
  • Patent number: 11814564
    Abstract: Methods, compounds, and compositions for inhibiting ice nucleation are disclosed. A method includes selecting a modified polyvinyl alcohol molecule based on at least one altered hydroxyl distance of the modified polyvinyl alcohol molecule and applying the modified polyvinyl alcohol molecule to water molecules to inhibit ice nucleation when subjected to freezing temperatures.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: November 14, 2023
    Assignee: University of Denver
    Inventor: Monika Bleszynski
  • Patent number: 11684692
    Abstract: An absorbable iron-based instrument is provided having an iron-based substrate, a zinc-containing protector in contact with the iron-based substrate, and a degradable polyester in contact with the iron-based substrate and/or the zinc-containing protector. The range of the ratio of the mass of the zinc-containing protector to the mass of the iron-based substrate is 1:200 to 1:2. In the degradable polyester, the mass fraction of a low-molecular-weight part with a molecular weight of less than 10,000 is less than or equal to 5%; alternatively, in the degradable polyester, the mass fraction of a residual monomer is less than or equal to 2%.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 27, 2023
    Assignee: Lifetech Scientific (Shenzhen) Co. Ltd.
    Inventors: Hongtao Sun, Deyuan Zhang, Jun Hu, Liping Chen
  • Patent number: 11613622
    Abstract: A method for forming polyester material from recycled film including the following steps is provided: performing a film surface treatment on the recycled film to form a recycled material including polyester; fragmenting the recycled material to form a recycled chipped material, wherein the recycled chipped material has a first intrinsic viscosity; and forming the polyester material by the recycled chipped material, wherein the polyester material has a second intrinsic viscosity, and the second intrinsic viscosity is greater than the first intrinsic viscosity.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: March 28, 2023
    Assignee: NAN YA PLASTICS CORPORATION
    Inventors: Te-Chao Liao, Chun-Che Tsao, Wen-Jui Cheng, Yueh-Shin Liu
  • Patent number: 11578192
    Abstract: The present disclosure relates to a molded article provided with a resin part formed with a thermoplastic resin composition. The molded article is provided with a resin part formed with a thermoplastic resin composition. The thermoplastic resin composition containing a thermoplastic resin, cellulose, and an ionic compound, wherein a content of the cellulose is 1 to 100 parts by mass based on 100 parts by mass of the thermoplastic resin, and a content of the ionic compound is 0.001 times or more and less than 1.000 times the content of the cellulose.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: February 14, 2023
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Jaekyung Kim, Kenichi Suyama, Yasuo Nakajima, Eiji Kozawa
  • Patent number: 11439495
    Abstract: The present disclosure relates to a graft material including a self-healing polymer layer and to implantable medical devices including such a graft material. The invention also relates to methods of using and manufacturing such graft materials and devices. In one embodiment, the implantable medical device is a stent graft.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: September 13, 2022
    Assignee: Cook Medical Technologies LLC
    Inventors: Ralf Spindler, Davorin Kevin Skender
  • Patent number: 11312797
    Abstract: The present invention discloses methods for removing volatile components from an ethylene polymer effluent stream from a polymerization reactor, and related polyethylene recovery and volatile removal systems. In these methods and systems, the polymer solids temperature is increased significantly prior to introduction of the polymer solids into a purge column for the final stripping of volatile components from the polymer solids.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: April 26, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth A. Dooley, Jeffrey S. Lowell, Joseph A. Curren, Scott E. Kufeld
  • Patent number: 11292879
    Abstract: A method of manufacturing an isolated polyetherimide composition includes combining an as-synthesized polyetherimide comprising units of the formula (I) and a melt-stabilizing amount of a tri(C8-30 acyl) glyceride, an anhydride of the formula (II), or a combination comprising at least one of the foregoing, to provide a mixture; and isolating a polyetherimide composition from the mixture to provide the isolated polyetherimide composition having a change in complex viscosity measured over 30 minutes at 390° C., at a shear rate of 6.28 rad/seconds, strain=5%, and under nitrogen, from +15 to ?20%, preferably from +10 to ?20%, more preferably from +5 to ?20%.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 5, 2022
    Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
    Inventors: Carmen Rocio Misiego Arpa, Edward Venema, Bernabe Quevedo Sanchez, Javier Nieves Remacha, Juan J. Rodriguez Ordonez
  • Patent number: 11274017
    Abstract: A belt for an elevator system includes a plurality of tension members arranged along a belt width and extending longitudinally along a length of the belt and a jacket at least partially enclosing the plurality of tension members. The jacket defining a traction side of the belt configured to interface with a traction sheave of an elevator system. The jacket includes a base material layer, and a coating layer positioned over the base material layer formed from a self-extinguishing fluoroelastomer material. A method of forming a belt for an elevator system includes forming a plurality of tension members and encapsulating the plurality of tension members in a jacket. The jacket includes a base material layer and a coating layer formed from the self-extinguishing fluoroelastomer material.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 15, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Chen Qian Zhao
  • Patent number: 11254760
    Abstract: Provided is a method for producing a purified fluoropolymer containing less fluoridable end groups. The production method includes: (a) melting a fluoropolymer to give a molten fluoropolymer; (b) reducing a reaction inhibitor in the molten fluoropolymer; (c) bringing the molten fluoropolymer into contact with an active substance after the step (b); and (d) removing a volatile matter from the molten fluoropolymer after the step (c).
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: February 22, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadaharu Isaka, Ryouichi Fukagawa, Tadahiro Yabu
  • Patent number: 11220561
    Abstract: Provided is a method for producing a purified fluoropolymer containing less fluoridable end groups. The production method includes: (a) melting a fluoropolymer to give a molten fluoropolymer; (b) reducing a reaction inhibitor in the molten fluoropolymer; (c) bringing the molten fluoropolymer into contact with an active substance after the step (b); and (d) removing a volatile matter from the molten fluoropolymer after the step (c).
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 11, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadaharu Isaka, Ryouichi Fukagawa, Tadahiro Yabu
  • Patent number: 11193212
    Abstract: Provided is a synthesis method comprising a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at an anode of a first electrochemical cell comprising a cathode and the anode, and a second step of synthesizing a first product by a dealcoholization reaction of the carbonate compound, wherein an alcohol-based compound eliminated in the second step is recycled in the first step.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: December 7, 2021
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Naohiro Fujinuma, Kenichi Shinmei
  • Patent number: 11130843
    Abstract: A method of manufacture of a polyetherimide composition includes contacting a substituted phthalic anhydride and an organic diamine in the presence of diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing solvents at a temperature of greater than 130° C. to provide a bis(phthalimide) composition comprising diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing solvents and a bis(phthalimide); and polymerizing the bis(phthalimide) and an alkali metal salt of a dihydroxy aromatic compound in the presence of diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing to form a polyetherimide. The method does not require any catalyst either for the imidization or the polymerization.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: September 28, 2021
    Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
    Inventors: Mani Raj Chaulagain, Thomas Link Guggenheim, Roy Ray Odle
  • Patent number: 11013695
    Abstract: Provided herein are nanocapsules comprising a single ribonucleoprotein (RNP) complex as a core and an biodegradable crosslinked polymer shell that encapsulates the core, wherein the RNP complex comprises a Cas9 polypeptide and a guide RNA, and the biodegradable crosslinked polymer shell comprises polymerized monomers of imidazolyl acryloyl monomers, bisacryloyl disulfide monomers (a biodegradable cross-linker), optionally PEG acryloyl monomers, and either cationic acryloyl monomers, anionic acryloyl monomers, or both cationic and anionic acryloyl monomers (optionally in combination with non-ionic acryloyl monomers) as defined herein. Also provided are methods of making the nanocapsules, kits containing the nanocapsules and methods of delivering the encapsulated RNP to cells.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: May 25, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Shaoqin Gong, Amr Abdeen, Krishanu Saha, Guojun Chen, Yuyuan Wang, Ruosen Xie
  • Patent number: 10940612
    Abstract: Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: March 9, 2021
    Assignees: Performance Polyamides S.A.S., Gala Industries. Inc.
    Inventors: Jean-Francois Estur, Eric Roche, Michael Eloo, Berthold Druschel
  • Patent number: 10774161
    Abstract: The present invention discloses methods for removing volatile components from an ethylene polymer effluent stream from a polymerization reactor, and related polyethylene recovery and volatile removal systems. In these methods and systems, the polymer solids temperature is increased significantly prior to introduction of the polymer solids into a purge column for the final stripping of volatile components from the polymer solids.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: September 15, 2020
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Kenneth A. Dooley, Jeffrey S. Lowell, Joseph A. Curren, Scott E. Kufeld
  • Patent number: 10711098
    Abstract: Provided is a process for the removal of tetrahydrofuran from polyesters or copolyesters comprising 1,4-butylene dicarboxylate repeating units and from compositions comprising the polyesters or copolyesters.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: July 14, 2020
    Assignee: NOVAMONT S.P.A.
    Inventors: Catia Bastioli, Luigi Capuzzi, Angelos Rallis
  • Patent number: 10557017
    Abstract: A method of decreasing aldehyde content in a polymeric material such as polyethylene terephthalate which includes contacting the polymeric material with a compound including first, second and third fragments each having a moiety and a moiety NH.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 11, 2020
    Assignee: Colormatrix Holdings, Inc.
    Inventors: Adrian Carmichael, Andrew Overend, Matthew Jackson, Steven Tattum
  • Patent number: 10508177
    Abstract: A method for purifying polybutylene terephthalate (PBT) includes: providing or receiving initial PBT, in which oligomers and tetrahydrofuran are present; dissolving the initial PBT in hexafluoroisopropanol (HFIP) to form a solution, in which the oligomers are also dissolved in the HFIP; and contacting the solution with compressed CO2 at a temperature and a pressure, thereby precipitating the purified PBT, resulting from a large portion of the oligomers are still dissolved in the HFIP, in the operation the temperature is in a range of 20° C. to 35° C., and the pressure is in a range of 900 psi to 1400 psi. A device for purifying PBT is also provided.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: December 17, 2019
    Assignees: NATIONAL TSING HUA UNIVERSITY, Chang Chun Plastics Co., Ltd., Chang Chun Petrochemical Co., LTD.
    Inventor: Chung-Sung Tan
  • Patent number: 10429128
    Abstract: The present invention relates to a method for heat-treating water-absorbing polymeric particles at a temperature equal to or above 150° C. in a fluidized bed dryer at a fast heat-up rate, the use of a fluidized bed dryer for heat-treating water-absorbing polymeric particles in continuous or batch mode as well as to the heat-treated polymeric particles obtained by the method of the present invention.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 1, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Herbert Gartner, Marc Hager, Harald Plochinger, Sabine Auernig, Hans-Peter Kohler, Elisabeth Lacker
  • Patent number: 10279513
    Abstract: A disclosed process includes steps of heating a foamed material by irradiation with near infrared radiation having a wavelength between 0.78 and 1.40 ?m to form a heated material, forming the heated material with a forming tool to obtain a formed material, and cooling the formed material and demolding to obtain a final workpiece. The foamed material may be constructed as a composite ply construction including an outer material and a foamed core between the outer material. The foamed material may contain a poly(meth)acrylimde, a polypropylene or a highly-crosslinked polyurethane.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: May 7, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Jorge Pinto, Matthias Alexander Roth, Joern Daniel Suendermann, Arnim Kraatz, Dieter Schlager, Rainer Zimmermann
  • Patent number: 10259768
    Abstract: A method of recycling a polyester includes the steps of providing the polyester, preparing a solution containing water and an alcohol, submerging the polyester in the solution, and hydrolytically depolymerizing the polyester while the polyester is submerged in the solution.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: April 16, 2019
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Rafael Auras, Fabiola Maria Iñiguez-Franco, Maria Rubino, Daniel Holmes, Susan E. Selke, Xiaoyi Fang
  • Patent number: 9982940
    Abstract: The invention relates to a process for drying a moist polymeric material to obtain a dried polymeric material, comprising the steps of: mixing the moist polymeric material with an aqueous solution of a carbohydrate to afford a mixture of the moist polymeric material with the carbohydrate; and heating and/or filtering the mixture of the moist polymeric material with the carbohydrate to remove an amount of volatiles to obtain a predried polymeric material having a volatiles content VCpre-dried (pre-drying step); fluidizing the pre-dried material in a fluidized bed in order to further remove an amount of volatiles to obtain the dried polymeric material having a volatiles content VCdried (fluidized bed drying step); and withdrawing and collecting the dried polymeric material from the fluidized bed; wherein VCpre-dried is higher than VCdried and the moist polymeric material comprises at least a polymeric material, said polymeric material comprises fluorine permanently bonded to said polymeric material.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 29, 2018
    Assignee: Patheon Austria GmbH & Co KG
    Inventors: Martin Helmut Friedrich Hanbauer, Herwig Landschützer
  • Patent number: 9982069
    Abstract: The following are provided: a water-absorbent resin in which, in the formation of an absorbent material forming an absorbent article, dispersion is satisfactory even in a moisture absorption state, which prevents the occurrence of troubles at the time of manufacturing of the absorbent article and which allows efficient manufacturing; and an absorbent article using an absorbent material containing the water-absorbent resin. The water-absorbent resin according to the present invention is obtained by polymerizing a water-soluble ethylenically unsaturated monomer and performing post-crosslinking thereon with a post-crosslinking agent, and the water-absorbent resin satisfies the requirements below: (A) yellow index is 5.0 or less; and (B) gel strength is 1800 Pa or less.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 29, 2018
    Assignee: Sumitomo Seika Chemicals Co. Ltd.
    Inventors: Tetsuhiro Hinayama, Masahiro Murakami, Hiroki Yabuguchi, Hideki Yokoyama
  • Patent number: 9975994
    Abstract: A method for desalinating a salt-containing polymer (SP) comprising a polyaryl ether having a softening temperature TS and a salt (S), comprising the steps of a) providing the salt-containing polymer (SP) at a first temperature T1 above the softening temperature TS of the polyaryl ether, b) contacting the salt-containing polymer (SP) provided in step a) with an extractant (E) to obtain a desalinated polymer (DP) comprising the polyaryl ether, and a salt-containing extractant (SE) comprising the extractant (E) and the salt (S).
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 22, 2018
    Assignee: BASF SE
    Inventors: Simon Gramlich, Achim Stammer, Angela Ulzhöfer, Frank Niedermaier
  • Patent number: 9969911
    Abstract: Provided are an adhesive composition suitable for a hot-melt adhesive which has a low tack and which after adhering to an adherend and through heat treatment comes to have sufficient adhesive force; and an adhesive product using the adhesive composition. The hot-melt adhesive composition includes an acrylic block copolymer (I) having at least one polymer block (A) including methacrylic acid ester units and at least one polymer block (B) including acrylic acid ester units, wherein the acrylic acid ester units constituting the polymer block (B) contain an acrylic acid ester (1) represented by CH2?CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms) and an acrylic acid ester (2) represented by CH2?CH—COOR2 (2) (wherein R2 is an organic group having 4 to 12 carbon atoms), and a mass ratio (1)/(2) of the acrylic acid ester (1) to the acrylic acid ester (2) is 90/10 to 25/75.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 15, 2018
    Assignee: KURARAY CO., LTD.
    Inventors: Kanayo Nakada, Moe Kawahara, Yoshihiro Morishita
  • Patent number: 9873770
    Abstract: Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: January 23, 2018
    Assignee: Northwester University
    Inventors: John M. Torkelson, Cynthia Pierre, Amanda Flores Walker, Philip J. Brunner
  • Patent number: 9840571
    Abstract: A method of removing VOCs from a molten polymer comprising: (a) polymerizing monomers in a reactor to produce a reaction mixture comprising unreacted monomers and molten polymer, (b) removing a portion of unreacted monomers from at least a portion of the reaction mixture to produce recovered monomers and degassed molten polymer, wherein the degassed molten polymer comprises VOCs, (c) contacting at least a portion of the degassed molten polymer with an inert stripping agent at a pressure equal to or greater than atmospheric pressure to produce stripped molten polymer and spent stripping agent, wherein the inert stripping agent is insoluble in the degassed molten polymer, and wherein the spent stripping agent comprises at least a portion of the inert stripping agent and at least a portion of the VOCs from the degassed molten polymer, and (d) cooling at least a portion of the stripped molten polymer and forming polymer pellets.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: December 12, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Kenneth A. Dooley
  • Patent number: 9707722
    Abstract: There is provided a method for producing a porous polyimide film, including a first step of forming a coating film containing a polyimide precursor solution where a polyimide precursor and an organic amine compound are dissolved in an aqueous solvent, and a resin particle incapable of dissolving in the polyimide precursor solution, followed by drying of the coating film to form a coat containing the polyimide precursor and the resin particle, and a second step of heating the coat to imidize the polyimide precursor and form a polyimide film, the second step including a treatment for removing the resin particle.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: July 18, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Katsumi Nukada, Tsuyoshi Miyamoto, Tomoya Sasaki, Kana Miyazaki
  • Patent number: 9695271
    Abstract: A continuous process comprising a) separating an epoxy novolac resin comprising oligomers having an average functionality of greater than 2.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 4, 2017
    Assignee: BLUE CUBE IP LLC
    Inventors: William W. Fan, Dennis W. Jewell, Stephen B. Wallace, Marvin L. Dettloff, Travis H. Larsen
  • Patent number: 9676888
    Abstract: To provide a novel compound having both a surface-activating ability and a polymerization controlling ability. A compound represented by the following general formula (1) or (2): wherein, R1 and R3 are an organic group having the hydrophile-lipophile balance (HLB) determined by Griffin's method of 3 or more. The definitions of R1, R2, R3, R4, Z, p and q are described in the Description.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: June 13, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tetsuya Noda, Fuminori Nakaya, Keiichi Sakashita, Yosuke Matsunaga, Taeko Oonuma, Yoshiko Irie
  • Patent number: 9676121
    Abstract: Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: June 13, 2017
    Assignees: RHODIA OPERATIONS, GALA INDUSTRIES, INC.
    Inventors: Jean-Francois Estur, Eric Roche, Michael Eloo, Berthold Druschel
  • Patent number: 9644067
    Abstract: A continuous process comprising: a) separating a starting epoxy novolac resin comprising oligomers having an average functionality of greater than 2.5 and a hydrolyzable chlorine content of less than 450 ppm with a first continuous evaporator apparatus under a vaporization temperature in the range of from 150° C. to 250° C. and an absolute pressure of from 0.05 to 1 mmHg absolute to form a first vapor fraction comprising epoxy novolac resin having more than 95 weight percent of 2-functional components and wherein the mass of the first vapor fraction is in the range of from 5 to 20 weight percent of the starting epoxy novolac resin; and a first bottom fraction comprising epoxy novolac resin having a lower weight percent of 2-functional components in comparison with the weight percent of 2-functional components of the starting epoxy novolac resin; b) recovering the first bottom fraction; and c) condensing from 95 weight percent to 99.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: May 9, 2017
    Assignee: BLUE CUBE IP LLC
    Inventors: William W. Fan, Dennis W. Jewell, Stephen B. Wallace, Travis H. Larsen
  • Patent number: 9624319
    Abstract: To provide a terminal group conversion method and a terminal stabilizing method, which are capable of converting unstable terminal groups in a fluorinated polymer to carboxylic acid fluoride groups at a high conversion rate. A fluorinated polymer is heated at from 200 to 400° C. for at least one hour in the presence of at least 50 mol of molecular oxygen per 1 mol of unstable terminal groups in the fluorinated polymer, to convert from 50 to 100 mol % of the unstable terminal groups to carboxylic acid fluoride groups.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: April 18, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Takefumi Abe, Akihiko Asakawa
  • Patent number: 9518149
    Abstract: Disclosed are a highly purified polylactic acid or a derivative thereof, or a salt thereof, and a method for purifying the same. The polylactic acid or a derivative thereof, or a salt thereof may be applied to various medical and drug carrier systems, or the like.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: December 13, 2016
    Assignee: SAMYANG BIOPHARMACEUTICALS CORPORATION
    Inventors: Bong Oh Kim, Min Hyo Seo
  • Patent number: 9242004
    Abstract: Methods are provided for preparing polymer mixtures having low residual monomer content. The methods comprise mixing the at least two polymers in a solvent to form a polymeric mixture, the polymeric mixture comprising at least one residual monomer; and adding an antisolvent to the polymeric mixture so as to separate the at least two polymers from the polymeric mixture, where the residual monomer is soluble in the antisolvent. In some embodiments, methods are provided for preparing at least two polymers having low residual monomer content, the methods comprise adding an antisolvent to a mixture of at least two polymers dissolved in a solvent so as to precipitate the at least two polymers from the solvent and anti-solvent. The methods provided avoid steps in dry blending of polymers and produces polymer blends that have low residual monomer content.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: January 26, 2016
    Assignee: Warsaw Orthopedic, Inc.
    Inventor: Danielle L. Clay
  • Patent number: 9181422
    Abstract: The present disclosure provides a resin suitable for use in rotational molding having an environmental stress crack resistance of greater than 1000 hours. The resin has a density from 0.937 to 0.942 g/cm3, a melt index I2 determined according to ASTM D 1238 (2.16 kg/190° C.?I2) from 4.0 to 7.0 g/10 min, an I21 determined according to ASTM D 1238 (21.6 kg/190° C.?I21) from 160 to 200 g/10 min, an I21/I2 from 30 to 40 and a terminal vinyl unsaturation greater than 0.06, per 1000 carbon atoms; and a primary structure parameter (PSP2) of from 4 to 7, and an overall Mw/Mn from 2.7 to 3.5 comprising from 2 to 5 weight % of one or more C4-8 alpha olefin comonomers.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: November 10, 2015
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Marie Therese Celine Bellehumeur, Mark Hoidas
  • Patent number: 9175110
    Abstract: Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises melt extruding said fluoropolymer resin to produce molten fluoropolymer resin; and exposing said molten fluoropolymer resin to an oxygen source during said melt extruding.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 3, 2015
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Paul Douglas Brothers, Gregory Allen Chapman, Subhash Vishnu Gangal
  • Patent number: 8969425
    Abstract: The present invention relates to a process for separating two or more components of a plastic material for the purposes of recycling, with particular application to purifying poly(ethylene terephthalate) (PET) during recycling procedures. The process comprises contacting a quantity of the plastic material with one or more discrete pre-heated particles.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 3, 2015
    Assignee: Nextek Limited
    Inventor: Edward Kosior
  • Patent number: 8956989
    Abstract: The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 17, 2015
    Assignee: Novomer, Inc.
    Inventors: Scott D. Allen, Anna E. Cherian, Chris A. Simoneau, Jay J. Farmer, Geoffrey W. Coates, Alexei Gridnev, Robert E. LaPointe
  • Patent number: 8951930
    Abstract: The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 10, 2015
    Assignee: Novomer, Inc.
    Inventors: Scott D. Allen, Anna E. Cherian, Chris A. Simoneau, Jay J. Farmer, Geoffrey W. Coates, Alexei Gridnev, Robert E. LaPointe
  • Patent number: 8945598
    Abstract: The present invention relates to a process for reducing solvent contents in drug-containing polymeric compositions. Specifically, the solvent contents in the drug-containing polymeric compositions are first reduced by one or more conventional drying methods, to a range from about 0.5 wt % to about 10 wt % of the total weight of the polymeric composition. Subsequently, the drug-containing polymeric compositions are further treated by one or more low temperature (i.e., having processing temperatures of less than 60° C.) drying methods for further reduction of the solvent content to less than 10,000 ppm.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: February 3, 2015
    Inventors: Vipul Dave, Murty N. Vyakamam, Qiang Zhang
  • Patent number: 8946109
    Abstract: The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 3, 2015
    Assignee: Novomer, Inc.
    Inventors: Scott D. Allen, Anna E. Cherian, Chris A. Simoneau, Jay J. Farmer, Geoffrey W. Coates, Alexei Gridnev, Robert E. LaPointe
  • Patent number: 8901203
    Abstract: The present invention relates to a stable pyrithione salt polyol dispersion containing a pyrithione salt(s) in particulate form, a polyol and a stabilizer such as a rheological additive. The dispersion can be incorporated into existing polyurethane formulations without additional formula adjustment. Polyurethane foams produced from the composition containing pyrithione salt polyol dispersion of the present invention have more open cell structures, than those produced with a typical commercially available pyrithione salt thus providing a soft comfortable feeling.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: December 2, 2014
    Assignee: Arch Chemicals, Inc.
    Inventors: Indulis Gruzins, Kiran B. Chandalia, Brian L. Cooper, Thomas E. Robitaille, Mauricio da Silva Franzim
  • Patent number: 8889800
    Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 18, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
  • Patent number: 8883867
    Abstract: Compositions containing a turpentine liquid and methods are disclosed for dissolving, dissolving via melting, selectively dissolving via melting, decomposing plastic comprising a chlorine-containing polymer or thermosetting polymer, and/or co-dissolving plastic with fossil fuel for purifying, separating, recovering or recycling plastic-containing material.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: November 11, 2014
    Assignee: Green Source Holdings LLC
    Inventors: Liang-tseng Fan, Shahram Reza Shafie