Polymerizing In The Presence Of A Specified Material Patents (Class 528/336)
  • Patent number: 9663875
    Abstract: This invention relates to a sheet comprising fibers and fibrids wherein either comprises a mixture of at least a first polymer and a second polymer; the first polymer derived from the reaction of one or more amine monomers and a plurality of acid monomers, wherein the one or more amine monomers includes at least 60 mole percent 5(6)-amino-2-(p-aminophenyl)benzimidazole, based on the total amount of amine monomers; and the plurality of acid monomers include those having a structure of Cl—CO—Ar1—CO—Cl & Cl—CO—Ar2—CO—Cl wherein Ar1 is an aromatic group having para-oriented linkages and Ar2 is an aromatic group having meta-oriented linkages, and wherein the plurality of acid monomers has at least 50 mole percent of the monomer containing aromatic group Ar2; and the second polymer derived from the reaction of metaphenylene diamine and isophthaloyl chloride.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 30, 2017
    Assignee: EI DU PONT DE NEMOURS AND COMPANY
    Inventor: Kiu-Seung Lee
  • Patent number: 9109082
    Abstract: The present invention relates to a method for increasing the recyclability of a polyamide in a sintering process, wherein at least 4000 ppm of at least one acid is incorporated in the polyamide, said acid being selected from: the acids of general formula HxPyOz in which x, y and z are integers selected in the range from 1 to 7, boric acid, the salts of these acids, their esters, their anhydrides and mixtures thereof.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 18, 2015
    Assignee: ARKEMA FRANCE
    Inventors: Cyrille Mathieu, Arnaud Lemaitre
  • Patent number: 9096725
    Abstract: A cross-linked polyazole, a method of preparing the cross-linked polyazole, an electrode and an electrolyte membrane for a fuel cell, which include the cross-linked polyazole, a method of manufacturing the electrolyte membrane, and a fuel cell including the cross-linked polyazole.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: August 4, 2015
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&D FOUNDATION
    Inventors: Seong-woo Choi, Jong-chan Lee, Jung-ock Park
  • Publication number: 20150130098
    Abstract: Disclosed is a method of fabricating a graphite sheet, including: polymerizing diamines and a dianhydride to form a polyamic acid. The polyamic acid is solvent casted on a substrate and hot baked to form a polyamic acid film or gel film. The polyamic acid film or gel film is biaxially stretched at a high temperature imidization or chemical imidization to form the polyimide film. The polyimide film is then carbonized and graphitized to form a graphite sheet. The diamines include a diamine of Formula 1 and a diamine of Formula 2, and the dianhydride includes a dianhydride of Formulae 3, Formula 4, Formula 5, Formula 6, Formula 7, Formula 8, Formula 9, or combinations thereof.
    Type: Application
    Filed: February 4, 2014
    Publication date: May 14, 2015
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shou-Jui HSIANG, Si-Yi CHIN, Wei-Ta YANG
  • Publication number: 20150080548
    Abstract: The invention concerns processes for forming polymer crumb comprising residues of 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of b mole percent DAPBI and y mole percent PPD in a solvent system comprising organic solvent and c weight percent of an inorganic salt, wherein the inorganic salt is present in an amount of at least 5 weight percent of the organic solvent, DAPBI and PPD being present in an amount sufficient for providing a polymer solution having a weight percent solids of 12 percent or greater on a polymer basis; and (b) contacting the slurry of step a) with a stoichiometric amount of terephthaloyl dichloride to form a product comprising the polymer; wherein the sum of y+b is 100 and the product of b×c is 225 or greater.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Inventor: FREDERICK K MALLON
  • Patent number: 8901266
    Abstract: Provided is a process for producing a copolymer of diallyldialkylammonium salt and a maleic acid which copolymer is free of residual monomers and polymerization initiator and hence stably exhibits excellent performances in various uses, and the process comprises polymerizing a monomer mixture comprising diallyldialkylammonium salt and maleic acid in the presence of persulfate as a radical polymerization initiator in water or a polar solvent, and completion of the polymerization-reaction, decomposing the radical polymerization initiator to produce a copolymer comprising diallyldialkylammonium salt constituent unit and a maleic acid constituent unit.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 2, 2014
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Yusuke Fukushima, Yasuhito Nakata, Minoru Takeuchi
  • Patent number: 8846851
    Abstract: A salt catalyst comprises an ionic complex of i) a nitrogen base comprising one or more guanidine and/or amidine functional groups, and ii) an oxoacid comprising one or more active acid groups, the active acid groups independently comprising a carbonyl group (C?O), sulfoxide group (S?O), and/or a phosphonyl group (P?O) bonded to one or more active hydroxy groups; wherein a ratio of moles of the active hydroxy groups to moles of the guanidine and/or amidine functional groups is greater than 0 and less than 2.0. The salt catalysts are capable of catalyzing ring opening polymerization of cyclic carbonyl compounds.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: September 30, 2014
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Coady, Kazuki Fukushima, James L. Hedrick, Hans W. Horn, Julia E. Rice
  • Patent number: 8822632
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, the process comprising: (a) forming a solution of oligomers having chloride end groups from one mole of paraphenylene diamine and 1.3 to 5 moles of terephthaloyl dichloride a solvent system comprising an organic solvent and an inorganic salt; and (b) adding DAPBI and terephthaloyl dichloride to the solution of oligomers to form a polymer.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: September 2, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8809434
    Abstract: The invention concerns processes for forming a polymer comprising residues of terephthaloyl chloride, paraphenylene diamine, and a salt of formula I wherein A? is a halogen anion, HSO4?, OH?, NO3?, C2H3O2?, or H2PO4?; the process comprising the steps of: a) forming a mixture comprising salt of formula I and paraphenylene diamine in a solvent system comprising an organic solvent and an inorganic salt; and b) adding terephthaloyl chloride to the mixture and allowing the formation of the polymer.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: August 19, 2014
    Assignee: EI du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8808804
    Abstract: Water-entrained compositions comprising colloidal or suspensoidal solutions comprising polyimide pre-polymers/oligomers are described. These compositions are obtained in water by initial dispersion of the resin constituents in water to from colloids or suspensoids. The water-entrained polyimide compositions can be applied to numerous surfaces or more beneficially used for composite fabrication. The coated surfaces or polyimide-pre-polymer impregnated reinforcing materials are subsequently cured and are ideal for providing thermal protection.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: August 19, 2014
    Assignee: The Boeing Company
    Inventors: Hyman Ralph Lubowitz, Thomas Karl Tsotsis
  • Publication number: 20140228484
    Abstract: There is described a process for producing a gel free hyperbranched polyamide polymer P having a polydispersity of at least 1.1 and a weight average molecular weight of at least 300 daltons, having primary amino groups (useful as a crosslinker). The process comprises the step of reacting Reagent A, a compound comprising at least one amino group (—NH2) and one functional group selected from the group consisting of a further amino group (—NH2), thiol (—SH) and a secondary amine radical (—NHR); (where R denotes a hydrocarbo group) (=functional amine) and Reagent B, an alpha-beta unsaturated Michael-reactive ester comprising a plurality of ester groups (=diester); in a molar ratio of amine A to diester B greater than 1 but less than 3 (preferably 2.1 to 2.9); to form the polyamide in a two stage reaction Michael addition and then amidation.
    Type: Application
    Filed: June 21, 2012
    Publication date: August 14, 2014
    Applicant: DSM IP ASSET B.V.
    Inventors: Echt Petronella Friederichs, Jacobus Adriaan Antonius Vermeulen, Marco Marcus Matheus Driessen, Johan Franz Gradus Antonius Jansen, Jan Hendrikus Udding
  • Patent number: 8802810
    Abstract: A method for manufacturing a solution of a diacid and diamine salt for manufacturing polyamide is described. A method for manufacturing an aqueous solution of diacid and diamine salts produced by mixing at least two diacids and at least one diamine, with a weight concentration of salt between 40% and 70%, including, in a first step, preparing an aqueous solution of diacid(s) and diamine(s) with a diacid/diamine mole ratio of less than 1 using one diacid and one diamine, and in a second step, adjusting the mole ratio of diacids/diamine(s) to a value of between 0.9 and 1.1, and fixing the weight concentration of salt by adding another diacid and, optionally, additional water and/or diamine is also described.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: August 12, 2014
    Assignee: Rhodia Operations
    Inventors: Sébastien Lomel, Jean-Francois Thierry, Véronique Bossennec
  • Publication number: 20140205783
    Abstract: The present invention relates to the use of a polyhydric alcohol in a polyamide polymerization process for giving the modified polyamide obtained increased stability toward heat, light and/or bad weather. The invention also relates to a polyamide modified in this way, and also to polyamide compositions that may be used for the preparation of specific articles liable to be subjected to high temperatures.
    Type: Application
    Filed: April 12, 2012
    Publication date: July 24, 2014
    Applicant: RHODIA OPERATIONS
    Inventors: Stéphane Jeol, Thierry Badel
  • Patent number: 8778247
    Abstract: The invention relates to a polymer film made of a polyamide composition comprising at least 80 weight percentage (wt. %) of a semi-crystalline semi-aromatic polyamide with a melting temperature (Tm) of at least 270° C., wherein the wt. % is relative to the total weight of the polymer composition, wherein the polymer film has an average coefficient of thermal expansion in plane in the temperature range of 20° C.-Tg, measured in plane with the method according to ASTM D969-08, of at most 40 ppm/K. The said film can be made from a polyamide moulding composition comprising said polyamide by film casting followed by biaxial stretching. The film has properties suitable for carrier films in flexible printed circuit boards.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: July 15, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Alexander Antonius Marie Stroeks, Guido Richard Struijk
  • Patent number: 8772438
    Abstract: A process for making a polyamide polymer, said process comprising heating, in one or more ionic liquid(s), one or more polyamide precursor(s) selected from: (i) one or more free dicarboxylic acid(s) or ester(s) thereof, with one or more diamine(s); or (ii) one or more salt(s) of a dicarboxylic acid with a diamine; or (iii) one or more lactam(s); or (iv) mixtures of any of the foregoing precursors (i) to (iii).
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 8, 2014
    Assignee: Invista North America S.är.l.
    Inventors: Keith Whiston, Charles Richard Langrick, Kenneth Richard Seddon, Alberto V. Puga
  • Patent number: 8772439
    Abstract: Solutions of a salt of a diamine and of a diacid, more particularly concentrated solutions of hexamethylene diammonium adipate salt (“nylon salt”), useful starting materials for the production of polyamides, more specifically of PA66, are prepared by mixing a diacid and a diamine, at a salt concentration by weight of from 50% to 80%, in a first stage, to provide aqueous solutions of diacid and diamine having a diacid/diamine molar ratio of greater than 1.1 and, in a second stage, adjusting the diacid/diamine molar ratio, by adding diamine, to a value of from 0.9 to 1.1, preferably from 0.99 to 1.01, and in fixing the salt concentration by weight by, optionally, adding water thereto.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: July 8, 2014
    Assignee: Rhodia Operations
    Inventor: Jean-François Thierry
  • Patent number: 8772418
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyamides. End-capped oligo- and polyamides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyamides end-capped with PEPA.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: July 8, 2014
    Assignee: Nexam Chemical AB
    Inventors: Daniel Rome, David Persson, Erik Lager, Dane Momcilovic, Malin Knutsson, Jan-Erik Rosenberg
  • Patent number: 8759475
    Abstract: Polyamides, e.g., polyhexamethylene adipamide, are continuously produced via the following stages: Stage 1: into and through a reactor, polycondensing a liquid stream which contain the polyamide monomer(s) at a pressure P1 greater than atmospheric pressure, the stream of material at the outlet of the reactor including a vapor phase which contains steam and a liquid phase which at least contains the product of polycondensation; Stage 2: feeding the outlet stream of material into a chamber, evacuating at least a portion of the vapor phase therefrom and recovering at least the liquid phase which at least contains the product of polycondensation, the pressure P2 in the chamber being regulated at a set value such that it is greater than atmospheric pressure and the residence time of said liquid phase in the chamber being less than 5 minutes; and Stage 3: pressure reducing at least the liquid phase which at least contains the stream of polycondensation product recovered during Stage 2.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: June 24, 2014
    Assignee: Rhodia Operations
    Inventors: Jean-Francois Thierry, Sébastien Lomel, Vincent Mollet, Matthieu Helft, Cédric Fillon
  • Patent number: 8735530
    Abstract: A method for making polyamide is described. More particularly, a method for making a polyamide from at least one diacid and one diamine, that includes a step of concentrating an aqueous solution of diacid and diamine salt up to a salt weight concentration higher than 85%, and a polymerization step up to a desired polymerization degree is described.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: May 27, 2014
    Assignee: Rhodia Operations
    Inventors: Virginie Thieblemont, Jean-Francois Thierry
  • Patent number: 8716434
    Abstract: The invention concerns polymer comprising 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), PPD, and terephthaloyl dichloride, the polymer having a IPC peak block ratio of 1.52 to 1.56 and an inherent viscosity of greater than 2 dl/g.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 6, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8716430
    Abstract: The invention concerns polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, made by a process comprising the steps of: (a) forming a slurry of b mole percent DAPBI and y mole percent PPD in a solvent system comprising organic solvent and c weight percent of an inorganic salt, wherein the inorganic salt is present in an amount of at least 5 weight percent of the organic solvent, DAPBI and PPD being present in an amount sufficient for providing a polymer solution having a weight percent solids of 12 percent or greater on a polymer basis; and (b) contacting the slurry of step a) with a stoichiometric amount of terephthaloyl dichloride to form a product comprising the polymer; wherein the sum of y+b is 100 and the product of b×c is 225 or greater.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 6, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Frederick K Mallon
  • Patent number: 8716433
    Abstract: The invention concerns polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, the polymer having a IPC peak block ratio of 1.45 to 1.47 and an inherent viscosity of greater than 2 dl/g.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 6, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8716432
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6) amino benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding terephthaloyl dichloride to the slurry terephthaloyl dichloride in the amount of up to one-half mole for every mole of DAPBI in the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until substantially all of the PPD is dissolved, (e) adding terephthaloyl dichloride in an amount of greater than one mole for every mole of PPD in the solution to form a prepolymer solution; and (e) agitating the prepolymer solution to form a polymer.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 6, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8716431
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI and paraphenylene diamine in a solvent system comprising an organic solvent and an inorganic salt; and (b) adding a stoichiometric amount of terephthaloyl dichloride to the slurry in a single addition and allowing the formation of the polymer.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 6, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 8703879
    Abstract: A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: April 22, 2014
    Assignee: BASF SE
    Inventors: Wolfgang Loth, Faissal-Ali El-Toufaili, Achim Stammer, Gad Kory, Achim Gerstlauer, Jens Becker
  • Patent number: 8648168
    Abstract: A biodegradable polyesteretheramide for manufacturing films and molded products, for example for application in the protection of foodstuff products and films for agriculture, contains a compound with at least 3 groups capable of reacting with one or several types of the active groups present in the reaction mixture, that is, compounds which, while containing ether groups in their structure, have active groups capable of reacting in the reaction mixture to form amide groups, and which simplifies and shortens the preparation process, reducing its economic cost and obtaining products of greater transparency and higher strain at failure, while maintaining other properties such as resistance to tearing and puncture, and allowing greater widths of films to be made with smaller thicknesses.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: February 11, 2014
    Assignee: Sociedad Anonima Minera Catalano Aragonesa
    Inventors: Maria José Alfonso Alegre, Patricia Zagalaz Lasierra, Miguel Ángel Caballero López
  • Patent number: 8642722
    Abstract: Disclosed is a method of preparing porous polybenzimidazole. The method includes providing polyaminoimide by reacting aromatic amine including at least two ortho-positioned amino groups and acid dianhydride, obtaining polypyrrolone from the polyaminoimide, subjecting the polypyrrolone to alkaline treatment, and subjecting the alkaline-treated polypyrrolone to heat treatment. The polybenzimidazole shows permeability and selectivity for various gases due to a fractional free volume and well-connected picopores.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: February 4, 2014
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Chul-Ho Jung, Sang-Hoon Han, Jae-Eun Lee, Young-Moo Lee, Ho-Bum Park
  • Patent number: 8642716
    Abstract: The present invention relates to branched polyamides comprising unsaturated ends comprising: at least one unit originating from a multifunctional monomer (A) having more than two functional groups, at least sequences resulting from the condensation, in the presence of at least one unsaturated monoacid, either of at least two different lactams, or of at least one lactam, at least one dicarboxylic acid and at least one diamine, or of a lactam or of an ?,?-aminocarboxylic acid, or of a diamine and of a diacid. The invention also relates to thermofusible adhesives comprising these branched polyamides comprising unsaturated ends, and to the use of these branched polyamides comprising unsaturated ends in sheathing electrical cables.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: February 4, 2014
    Assignee: Arkema France
    Inventors: Annett Linemann, Thierry Briffaud
  • Publication number: 20140011972
    Abstract: Provided herein are novel processes for synthesis of polymers and/or polymer composites.
    Type: Application
    Filed: February 7, 2012
    Publication date: January 9, 2014
    Applicant: GRAPHEA, INC.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer
  • Patent number: 8618225
    Abstract: A process for preparing polyamides by reacting starting monomers selected from dicarboxylic acids and diamines or salts of dicarboxylic acids and diamines, amino carboxylic acids, amino nitriles, lactams and mixtures thereof, in the presence or absence of water and/or of functionalizing compounds capable of attaching to carboxyl or amino groups, which process comprises performing the reaction in an ionic liquid as solvent without use of additional accelerants.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: December 31, 2013
    Assignee: BASF SE
    Inventor: Faissal-Ali El Toufaili
  • Patent number: 8580913
    Abstract: A polyimide resin which is satisfactory in solvent solubility and heat resistance, has a low coefficient of water absorption and is excellent in adhesive properties and a method for manufacturing the same, a film containing the subject polyimide resin and a metal-clad laminate including an adhesive layer composed of the subject polyimide resin are provided. The polyimide resin is a polyimide resin containing a molecule having a repeating unit represented by a structure of any one of the following formulae (1) to (3) in a specified proportion, whose molecular end is capped by an end-capping agent.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: November 12, 2013
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Tsuyoshi Bito, Shuta Kihara, Jitsuo Oishi
  • Patent number: 8546513
    Abstract: The disclosure relates to methods and materials useful for polymerizing a monomer. In one embodiment, for example, the disclosure provides a method for polymerizing a monomer containing a plurality of electrophilic groups, wherein the method comprises contacting the monomer with a nucleophilic reagent in the presence of a guanidine-containing catalyst. The methods and materials of the disclosure find utility, for example, in the field of materials science.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: October 1, 2013
    Assignees: International Business Machines Corporation, The Board of Trustees of the Leland Stanford Junior University
    Inventors: James L. Hedrick, Russell C. Pratt, Robert M. Waymouth
  • Publication number: 20130231424
    Abstract: A semi-aromatic polyamide film including a semi-aromatic polyamide resin including a dicarboxylic acid mainly composed of terephthalic acid and a diamine mainly composed of an aliphatic diamine having 9 carbon atoms, wherein a number density of fish-eyes of 0.01 mm2 or more in size present in the film is 100/1000 cm2 or less.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 5, 2013
    Applicants: KURARAY CO., LTD., UNITIKA LTD.
    Inventors: Arihiro Anada, Kozo Tamura, Yuji Munesawa
  • Patent number: 8507640
    Abstract: A salt catalyst comprises an ionic complex of i) a nitrogen base comprising one or more guanidine and/or amidine functional groups, and ii) an oxoacid comprising one or more active acid groups, the active acid groups independently comprising a carbonyl group (C?O), sulfoxide group (S?O), and/or a phosphonyl group (P?O) bonded to one or more active hydroxy groups; wherein a ratio of moles of the active hydroxy groups to moles of the guanidine and/or amidine functional groups is greater than 0 and less than 2.0. The salt catalysts are capable of catalyzing ring opening polymerization of cyclic carbonyl compounds.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: August 13, 2013
    Assignee: International Business Machines Corporation
    Inventors: Daniel Joseph Coady, Kazuki Fukushima, James Lupton Hedrick, Hans Werner Horn, Julia Elizabeth Rice
  • Publication number: 20130203906
    Abstract: The invention concerns processes for forming a polymer comprising residues of terephthaloyl chloride, paraphenylene diamine, and a salt of formula I wherein A? is a halogen anion, HSO4?, OH?, NO3?, C2H3O2?, or H2PO4?; the process comprising the steps of: a) forming a mixture comprising salt of formula I and paraphenylene diamine in a solvent system comprising an organic solvent and an inorganic salt; and b) adding terephthaloyl chloride to the mixture and allowing the formation of the polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 8, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Publication number: 20130203955
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding terephthaloyl dichloride to the slurry terephthaloyl dichloride in the amount of up to one-half mole for every mole of DAPBI in the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until substantially all of the PPD is dissolved, (e) adding terephthaloyl dichloride in an amount of greater than one mole for every mole of PPD in the solution to form a prepolymer solution; and (e) agitating the prepolymer solution to form a polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 8, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Publication number: 20130197146
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, comprising the steps of: a) forming a solution of DAPBI and paraphenylene diamine dihydrochloride in a solvent system comprising an organic solvent and an inorganic salt; b) cooling the solution to a temperature of 30° C. or less; c) adding a stoichiometric amount of terephthaloyl dichloride, relative to the total amount of the DAPBI and the paraphenylene diamine dihydrochloride, to the solution; and d) agitating the solution of step c) to form a polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 1, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Publication number: 20130197148
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, the process comprising: (a) forming a solution of oligomers having chloride end groups from one mole of paraphenylene diamine and 1.3 to 5 moles of terephthaloyl dichloride a solvent system comprising an organic solvent and an inorganic salt; and (b) adding DAPBI and terephthaloyl dichloride to the solution of oligomers to form a polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 1, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Publication number: 20130197147
    Abstract: The invention concerns processes for forming polymer crumb comprising residues of 2- (4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of b mole percent DAPBI and y mole percent PPD in a solvent system comprising organic solvent and c weight percent of an inorganic salt, wherein the inorganic salt is present in an amount of at least 5 weight percent of the organic solvent, DAPBI and PPD being present in an amount sufficient for providing a polymer solution having a weight percent solids of 12 percent or greater on a polymer basis; and (b) contacting the slurry of step a) with a stoichiometric amount of terephthaloyl dichloride to form a product comprising the polymer; wherein the sum of y+b is 100 and the product of b×c is 225 or greater.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 1, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: FREDERICK K. MALLON
  • Publication number: 20130197184
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI and paraphenylene diamine in a solvent system comprising an organic solvent and an inorganic salt; and (b) adding a stoichiometric amount of terephthaloyl dichloride to the slurry in a single addition and allowing the formation of the polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 1, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Publication number: 20130190433
    Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding less than a stoichiometric amount, relative to the amount of DAPBI, of terephthaloyl dichloride to the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until essentially all of the PPD is dissolved, followed by the addition of terephthaloyl dichloride to form a prepolymer solution; and (e) allowing the prepolymer solution to form a polymer.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 25, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: KIU-SEUNG LEE
  • Patent number: 8492507
    Abstract: Disclosed is an acetylenic polyamide and a composition comprising said acetylenic polyamide, which acetylenic polyamide. Said acetylenic group is suitably obtained by subjecting at least one acetylenic compound to reaction with either at least one polyamide, or at least one amino functional monomer and/or carboxylic acid, yielding a corresponding acetylenic amide monomer, oligoamide or polyamide. Amide monomers and/or oligoamides can subsequently be used in production of the acetylenic polyamide.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: July 23, 2013
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, David Persson, Elisbeth Kiraly, Mehrnoush Jowkar Deriss
  • Patent number: 8450447
    Abstract: Polyesteramides prepared from decreased perfection diamide diester monomers. The polymers exhibit improved physical properties.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 28, 2013
    Inventors: William J. Harris, Peter S. Martin, Jerry E. White, Rene Broos
  • Patent number: 8420772
    Abstract: The present invention relates to a semi-aromatic polyamide and a method for preparing it with low wastewater discharge. The semi-aromatic polyamide for the present invention is obtained by introducing aromatic dicarboxylic acid, aliphatic diamine containing 4˜14 carbon atoms and the wastewater generated during the previous prepolymerization into an autoclave for prepolymerization reaction and then further polymerizing the prepolymer. In this preparation method, the wastewater generated during polymerization is recycled, thus greatly reducing the wastewater discharge; the raw materials in the wastewater are effectively recycled, thus improving the utilization rate of raw materials; meanwhile, the diamine in the wastewater compensates that lost along with water discharge during prepolymerization, thus ensuring the Mole ratio balance between dicarboxylic acid monomer and diamine monomer.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: April 16, 2013
    Assignees: Kingfa Science & Technology Co., Ltd, Shanghai Kingfa Science & Technology Co., Ltd
    Inventors: Min Cao, Shiyong Xia, Xianbo Huang, Tongmin Cai, Xiangbin Zeng
  • Patent number: 8362192
    Abstract: A method for obtaining an aromatic polyamide crumb from an aromatic diamine and an aromatic diacid chloride, which aromatic polyamide comprises 5(6)-amino-2-(p-aminophenyl)benzimidazole terephthalamide units and has a relative viscosity ?rel of at least 3, by: (1) adding at least monomers (i)-(iii) in N-methyl pyrrolidone as solvent wherein (i) is 0-30 mole % para-phenylenediamine (PPD), (ii) is 20-50 mole % 5(6)-amino-2-(p-aminophenyl)benzimidazole (DABPI), (iii) is 49.05-50.05 mole % terephthaloyl dichloride (TDC), and optionally calcium chloride to obtain a CaCl2/aromatic diamine molar ratio less than 0.5, and an aromatic diamine/aromatic diacid chloride ratio between 0.99 and 1.01; (2) mixing the monomers and the optional calcium chloride to a homogenous mixture having a monomer concentration of 5 to 12 wt %; followed by (3) adding calcium chloride to the homogeneous mixture to obtain a CaC12/aromatic diamine molar ratio 0.6-1.0; and (4) polymerizing the mixture.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: January 29, 2013
    Assignee: Teijin Aramid B.V.
    Inventors: Richard Elena Theodorus Petrus De Vos, Joannes Marinus Surquin, Marlieke Elisabeth Josephine Pepels
  • Patent number: 8338561
    Abstract: Polyamide having a melting point between 330° C. and 370° C., said polyamide comprising: a diamine component (a) comprising between 0 and 55 mole %, based on the total number of moles of the diamine component (a), of at least one aliphatic diamine having more than 6 carbon atoms, and between 45 and 100 mole %, based on the total number of moles of the diamine component (a), of at least one aliphatic diamine having at most 6 carbon atoms, and a dicarboxylic acid component (b) comprising more than 50 mole %, based on the total number of moles of the dicarboxylic acid component (b), of terephthalic acid, with the exception of a certain specific polyamide (P*).
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: December 25, 2012
    Assignee: Solvay Advanced Polymers, L.L.C.
    Inventors: Dale R. Warren, Nancy Singletary, Mark G. Reichmann
  • Patent number: 8309663
    Abstract: Water-entrained compositions comprising colloidal or suspensoidal solutions comprising polyimide pre-polymers/oligomers are described. These compositions are obtained in water by initial dispersion of the resin constituents in water to from colloids or suspensoids. The water-entrained polyimide compositions can be applied to numerous surfaces or more beneficially used for composite fabrication. The coated surfaces or polyimide-pre-polymer impregnated reinforcing materials are subsequently cured and are ideal for providing thermal protection.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: November 13, 2012
    Assignee: The Boeing Company
    Inventors: Hyman Ralph Lubowitz, Thomas Karl Tsotsis
  • Patent number: 8268956
    Abstract: The invention is directed to a transparent mold made of a polyamide molding material containing at least one polyamide formed from at least one diamine selected from the group of hexamethylene diamine (HMDA), bis-(4-amino-3-methylcyclohexyl)methane (MACM) and/or bis-(4-amino-cyclohexyl)methane (PACM) as well as from at least one dicarboxylic acid selected from the group of isophthalic acid (IPS), terephthalic acid (TPS) and/or dodecanedioic acid (DDS) or from the aforementioned diamines and dicarboxylic acids in combination with lactams and/or ?-/?-amino acids.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: September 18, 2012
    Assignee: Ems-Chemie AG
    Inventors: Friedrich Severin Bühler, Christian Rytka
  • Publication number: 20120116011
    Abstract: Provided is a process for producing a copolymer of diallyldialkylammonium salt and a maleic acid which copolymer is free of residual monomers and polymerization initiator and hence stably exhibits excellent performances in various uses, and the process comprises polymerizing a monomer mixture comprising diallyldialkylammonium salt and maleic acid in the presence of persulfate as a radical polymerization initiator in water or a polar solvent, and completion of the polymerization-reaction, decomposing the radical polymerization initiator to produce a copolymer comprising diallyldialkylammonium salt constituent unit and a maleic acid constituent unit.
    Type: Application
    Filed: February 23, 2010
    Publication date: May 10, 2012
    Inventors: Yusuke Fukushima, Yasuhito Nakata, Minoru Takeuchi
  • Publication number: 20120065327
    Abstract: A polyamide resin which comprises a diamine unit containing 70 mol % or more of a paraxylylenediamine unit and a dicarboxylic acid unit containing 70 mol % or more of a linear aliphatic dicarboxylic acid unit having from 6 to 18 carbon atoms, and which has a phosphorus atom concentration of from 50 to 1,000 ppm and a YI value of 10 or less in the color difference test in accordance with JIS-K-7105.
    Type: Application
    Filed: May 28, 2010
    Publication date: March 15, 2012
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY INC
    Inventors: Shun Ogawa, Shinichi Ayuba, Takahiko Sumino, Hisayuki Kuwahara, Kentaro Ishii