Polymerizing In The Presence Of A Specified Material Patents (Class 528/336)
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Patent number: 12017433Abstract: Provided is a multilayered article and a multilayered container having excellent delamination resistance while maintaining an excellent oxygen barrier property. The multilayered article includes a polyester resin layer and a barrier layer, wherein a polyamide resin contained in the barrier layer contains from 90 to 10 parts by mass of a polyamide resin (B) per 10 to 90 parts by mass of a polyamide resin (A). In the polyamide resin (A), 70 mol % or more of structural unit derived from a diamine is derived from xylylenediamine, and over 90 mol % of structural unit derived from a dicarboxylic acid is derived from adipic acid. In the polyamide resin (B), 70 mol % or more of structural unit derived from a diamine is derived from xylylenediamine, and of structural unit derived from a dicarboxylic acid, from 30 to 65 mol % is derived from an am-linear aliphatic dicarboxylic acid having from 4 to 20 carbons and from 70 to 35 mol % is derived from isophthalic acid.Type: GrantFiled: April 22, 2019Date of Patent: June 25, 2024Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takanori Miyabe, Takafumi Oda, Jin Nakamura, Masaki Yamanaka
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Patent number: 11421079Abstract: A method for controlling a polyimide backbone structure, including: in preparation of a polyimide through reaction of a diamine component and (1S,2R,4S,5R)-cyclohexanetetracarboxylic dianhydride in an organic solvent containing an aprotic amide solvent and a lactone solvent, adjusting one or more of reaction conditions of a mass ratio of the aprotic amide solvent and the lactone solvent, a reaction temperature, a reaction time, and an amount of the aprotic amide solvent, so as to convert a cis-structure derived from the (1S,2R,4S,5R)-cyclohexanetetracarboxylic dianhydride in the formed polyimide to a trans-structure derived from (1R,2S,4S,5R)-cyclohexanetetracarboxylic dianhydride corresponding to the reaction conditions, thereby controlling a proportion of the trans-structure.Type: GrantFiled: February 24, 2017Date of Patent: August 23, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Teruhisa Matsumaru, Yohei Abiko, Shuya Suenaga
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Patent number: 11155686Abstract: A fiber-reinforced polyamide resin base material comprises continuous reinforcing fibers, or comprises a reinforcing fiber base material in which discontinuous reinforcing fibers are dispersed, impregnated with a polyamide resin. In the polyamide resin, at least part of the polymer constituting the polyamide resin is an end-modified polyamide resin having, at an end group of the polymer, a structure constituted by a structural unit different from a repeating structural unit constituting the backbone of the polymer. A fiber-reinforced polyamide resin base material having an excellent impregnation property and thermal stability, less void, and excellent surface quality is provided.Type: GrantFiled: March 24, 2017Date of Patent: October 26, 2021Assignee: TORAY INDUSTRIES, INC.Inventors: Masayuki Koshi, Hiroyuki Ome, Ken Sudo, Kenichi Utazaki
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Patent number: 11015022Abstract: The present disclosure relates to a polyamide comprising at least one repeating unit of formula I: —[OC—Ar—O—P(?O)(—Ar)—O—Ar—CO—NH—R—NH]— Formula (I) wherein, Ar is independently selected from the group consisting of aryl, arylene, heteroaryl and carbocyclic group; R represents a covalent bond or a divalent hydrocarbon-based group selected from the group consisting of saturated or unsaturated aliphatics, saturated or unsaturated cycloaliphatics, aromatics, arylaliphatics, and alkylaromatics.Type: GrantFiled: October 13, 2017Date of Patent: May 25, 2021Assignee: Performance Polyamides, SASInventors: Gururajan Padmanaban, Kaustav Chakraborty, Mayuri Shaiwale, Imani B. Jones, Keshav S. Gautam
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Patent number: 11001672Abstract: Embodiments of the present disclosure include, a dianhydride monomer, a polyimide, a method of making a dianhydride, a method of making a polyimide, and the like. Embodiments of the present disclosure can be used in membrane-based gas separation applications.Type: GrantFiled: May 1, 2017Date of Patent: May 11, 2021Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Ingo Pinnau, Bader Saleh Ghanem, Mahmoud Atef Abdulhamid
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Patent number: 10899721Abstract: Disclosed are corrosion inhibitor compounds and compositions useful for preventing or inhibiting corrosion of surfaces found in cooling water applications. In some embodiments, the surfaces may include mild steel, aluminum, brass, copper, galvanized steel, a copper alloy, admirality brass, or any combination thereof. Also disclosed are methods of using the compounds and compositions as corrosion inhibitors. In some embodiments, the corrosion inhibitor compounds and compositions are used in cooling water applications.Type: GrantFiled: August 14, 2017Date of Patent: January 26, 2021Assignee: ECOLAB USA INC.Inventors: Jothibasu Seetharaman, Edouard Andre Reny, Donald A. Johnson, Kailas B. Sawant, Vaideeswaran Sivaswamy
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Patent number: 10858480Abstract: The present disclosure relates to a preparation of polymer with improved color and properties. More particularly, the disclosure relates to the preparation of polyamide by introducing a polyetheramine additive during the polymer extrusion step. The extruded polymer is superior in appearance and spinnable in subsequent processing into yarn.Type: GrantFiled: November 11, 2016Date of Patent: December 8, 2020Assignee: INVISTA North America S.a.r.l.Inventors: Charles Richard Langrick, Garry S. Hunt
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Patent number: 10808122Abstract: The invention relates to a flame retardant polyamide composition comprising (A) a semi-crystalline semi-aromatic polyamide, (B) a semi-crystalline aliphatic polyamide and (C) a halogen free flame retardant system comprising a metal salt of a (di)phosphinic acid, a melamine condensation product, a polyphosphate salt of melamine or a polyphosphate salt of a melamine condensation product, or any mixture thereof; wherein the weight ratio of (A):(B) is in the range of 75:25-98:2, and (B) has a number average molecular weight (Mn) of more than 7500 g/mol. The invention also relates to an article made of the flame retardant polyamide composition.Type: GrantFiled: May 8, 2012Date of Patent: October 20, 2020Assignee: DSM IP ASSETS B.V.Inventor: Frank Peter Theodorus Johannes Van Der Burgt
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Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt
Patent number: 10584206Abstract: The present invention relates to a process for preparing a polyamide, a polyamide material obtainable by the said process, a nylon salt to be used therein, and a process for making the nylon salt. The process for preparing the polyamide is a direct solid state polymerization process. The salt used herein is a granulate material, prepared by a process, comprising spraying an aqueous solution comprising a diamine and a dicarboxylic acid dissolved in an aqueous medium, or an aqueous slurry comprising a diammonium dicarboxylate salt dispersed in an aqueous medium directly obtained from such an aqueous solution, onto or in a fluidized bed of diammonium dicarboxylate salt particles, while evaporating the aqueous medium, thereby forming a granulate salt material.Type: GrantFiled: July 29, 2015Date of Patent: March 10, 2020Assignee: DSM IP ASSETS B.V.Inventors: Bas Van Laarhoven, Christiaan Johannes Cornelis Stoelwinder, Mark Helmsing -
Patent number: 9663875Abstract: 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: GrantFiled: October 29, 2014Date of Patent: May 30, 2017Assignee: EI DU PONT DE NEMOURS AND COMPANYInventor: Kiu-Seung Lee
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Patent number: 9109082Abstract: 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: GrantFiled: May 31, 2012Date of Patent: August 18, 2015Assignee: ARKEMA FRANCEInventors: Cyrille Mathieu, Arnaud Lemaitre
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Patent number: 9096725Abstract: 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: GrantFiled: April 23, 2010Date of Patent: August 4, 2015Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&D FOUNDATIONInventors: Seong-woo Choi, Jong-chan Lee, Jung-ock Park
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Publication number: 20150130098Abstract: 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: ApplicationFiled: February 4, 2014Publication date: May 14, 2015Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Shou-Jui HSIANG, Si-Yi CHIN, Wei-Ta YANG
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Publication number: 20150080548Abstract: 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: ApplicationFiled: November 21, 2014Publication date: March 19, 2015Inventor: FREDERICK K MALLON
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Patent number: 8901266Abstract: 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: GrantFiled: February 23, 2010Date of Patent: December 2, 2014Assignee: Nitto Boseki Co., Ltd.Inventors: Yusuke Fukushima, Yasuhito Nakata, Minoru Takeuchi
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Patent number: 8846851Abstract: 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: GrantFiled: February 20, 2013Date of Patent: September 30, 2014Assignee: International Business Machines CorporationInventors: Daniel J. Coady, Kazuki Fukushima, James L. Hedrick, Hans W. Horn, Julia E. Rice
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Patent number: 8822632Abstract: 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: GrantFiled: July 27, 2012Date of Patent: September 2, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 8808804Abstract: 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: GrantFiled: October 24, 2012Date of Patent: August 19, 2014Assignee: The Boeing CompanyInventors: Hyman Ralph Lubowitz, Thomas Karl Tsotsis
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Patent number: 8809434Abstract: 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: GrantFiled: July 27, 2012Date of Patent: August 19, 2014Assignee: EI du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Publication number: 20140228484Abstract: 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: ApplicationFiled: June 21, 2012Publication date: August 14, 2014Applicant: 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
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Patent number: 8802810Abstract: 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: GrantFiled: March 25, 2010Date of Patent: August 12, 2014Assignee: Rhodia OperationsInventors: Sébastien Lomel, Jean-Francois Thierry, Véronique Bossennec
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Publication number: 20140205783Abstract: 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: ApplicationFiled: April 12, 2012Publication date: July 24, 2014Applicant: RHODIA OPERATIONSInventors: Stéphane Jeol, Thierry Badel
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Patent number: 8778247Abstract: 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: GrantFiled: January 15, 2010Date of Patent: July 15, 2014Assignee: DSM IP Assets B.V.Inventors: Alexander Antonius Marie Stroeks, Guido Richard Struijk
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Patent number: 8772418Abstract: 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: GrantFiled: October 21, 2011Date of Patent: July 8, 2014Assignee: Nexam Chemical ABInventors: Daniel Rome, David Persson, Erik Lager, Dane Momcilovic, Malin Knutsson, Jan-Erik Rosenberg
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Patent number: 8772438Abstract: 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: GrantFiled: June 30, 2010Date of Patent: July 8, 2014Assignee: Invista North America S.är.l.Inventors: Keith Whiston, Charles Richard Langrick, Kenneth Richard Seddon, Alberto V. Puga
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Patent number: 8772439Abstract: 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: GrantFiled: May 22, 2008Date of Patent: July 8, 2014Assignee: Rhodia OperationsInventor: Jean-François Thierry
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Patent number: 8759475Abstract: 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: GrantFiled: March 25, 2008Date of Patent: June 24, 2014Assignee: Rhodia OperationsInventors: Jean-Francois Thierry, Sébastien Lomel, Vincent Mollet, Matthieu Helft, Cédric Fillon
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Patent number: 8735530Abstract: 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: GrantFiled: March 9, 2010Date of Patent: May 27, 2014Assignee: Rhodia OperationsInventors: Virginie Thieblemont, Jean-Francois Thierry
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Patent number: 8716430Abstract: 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: GrantFiled: July 27, 2012Date of Patent: May 6, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Frederick K Mallon
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Patent number: 8716434Abstract: 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: GrantFiled: July 27, 2012Date of Patent: May 6, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 8716432Abstract: 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: GrantFiled: July 27, 2012Date of Patent: May 6, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 8716431Abstract: 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: GrantFiled: July 27, 2012Date of Patent: May 6, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 8716433Abstract: 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: GrantFiled: July 27, 2012Date of Patent: May 6, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
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Patent number: 8703879Abstract: 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: GrantFiled: June 19, 2009Date of Patent: April 22, 2014Assignee: BASF SEInventors: Wolfgang Loth, Faissal-Ali El-Toufaili, Achim Stammer, Gad Kory, Achim Gerstlauer, Jens Becker
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Patent number: 8648168Abstract: 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: GrantFiled: February 4, 2013Date of Patent: February 11, 2014Assignee: Sociedad Anonima Minera Catalano AragonesaInventors: Maria José Alfonso Alegre, Patricia Zagalaz Lasierra, Miguel Ángel Caballero López
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Patent number: 8642716Abstract: 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: GrantFiled: April 25, 2005Date of Patent: February 4, 2014Assignee: Arkema FranceInventors: Annett Linemann, Thierry Briffaud
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Patent number: 8642722Abstract: 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: GrantFiled: May 15, 2009Date of Patent: February 4, 2014Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Chul-Ho Jung, Sang-Hoon Han, Jae-Eun Lee, Young-Moo Lee, Ho-Bum Park
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Publication number: 20140011972Abstract: Provided herein are novel processes for synthesis of polymers and/or polymer composites.Type: ApplicationFiled: February 7, 2012Publication date: January 9, 2014Applicant: GRAPHEA, INC.Inventors: Christopher W. Bielawski, Daniel R. Dreyer
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Patent number: 8618225Abstract: 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: GrantFiled: February 6, 2009Date of Patent: December 31, 2013Assignee: BASF SEInventor: Faissal-Ali El Toufaili
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Patent number: 8580913Abstract: 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: GrantFiled: July 5, 2007Date of Patent: November 12, 2013Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Tsuyoshi Bito, Shuta Kihara, Jitsuo Oishi
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Patent number: 8546513Abstract: 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: GrantFiled: January 7, 2013Date of Patent: October 1, 2013Assignees: International Business Machines Corporation, The Board of Trustees of the Leland Stanford Junior UniversityInventors: James L. Hedrick, Russell C. Pratt, Robert M. Waymouth
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Publication number: 20130231424Abstract: 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: ApplicationFiled: November 17, 2011Publication date: September 5, 2013Applicants: KURARAY CO., LTD., UNITIKA LTD.Inventors: Arihiro Anada, Kozo Tamura, Yuji Munesawa
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Patent number: 8507640Abstract: 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: GrantFiled: August 19, 2010Date of Patent: August 13, 2013Assignee: International Business Machines CorporationInventors: Daniel Joseph Coady, Kazuki Fukushima, James Lupton Hedrick, Hans Werner Horn, Julia Elizabeth Rice
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Publication number: 20130203955Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 8, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Publication number: 20130203906Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 8, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Publication number: 20130197148Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 1, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Publication number: 20130197147Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 1, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: FREDERICK K. MALLON
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Publication number: 20130197184Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 1, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Publication number: 20130197146Abstract: 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: ApplicationFiled: July 27, 2012Publication date: August 1, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Publication number: 20130190433Abstract: 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: ApplicationFiled: July 27, 2012Publication date: July 25, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE