From At Least Two Dicarboxylic Acids Or Derivatives Or Mixtures Thereof Patents (Class 528/339)
  • Patent number: 10377856
    Abstract: The invention relates to a composition for thermoplastic composite material comprising: 30% to 60% by volume, preferentially 35% to 50% by volume, of a thermoplastic matrix comprising from 50% to 100% by weight of a semi-crystalline polyamide polymer and from 0% to 50% by weight of at least one additive and/or of at least one other polymer, 40% to 70% by volume, preferentially 50% to 65% by volume, of long reinforcing fibers (or of long fibrous reinforcement), said thermoplastic matrix impregnating said long reinforcing fibers (or said long fibrous reinforcement), said semi-crystalline polyamide polymer being: a) a reactive composition comprising or consisting of at least one reactive polyamide prepolymer which is a precursor of said semi-crystalline polyamide polymer, or, as an alternative to a), b) a nonreactive composition of at least one polyamide polymer, said composition being that of said thermoplastic matrix defined above, and said reactive polyamide prepolymer of the composition a) and said pol
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: August 13, 2019
    Assignee: ARKEMA FRANCE
    Inventors: Mathieu Capelot, Gilles Hochstetter
  • Patent number: 9567434
    Abstract: A process for preparation of a polyamide PA-4X containing monomer units of 1,4-diaminobutane and an aliphatic linear dicarboxylic acid X with at least 8 carbon atoms, which contains the following steps: 1) making a solution comprising a salt of 1,4-diaminobutane and the aliphatic linear dicarboxylic acid and water, at a temperature at which the salt dissolves; 2) concentrating the solution of the salt at a temperature above the crystallization temperature of the salt, at a pressure of at most 7 barA to a water content of between 0 and 30 wt % based on the total amount of solution, 3) producing a polymer from the solution obtained by step 2, while keeping the polymer in a melt and at a pressure of less than 18 barA, 4) depressurizing the polymer obtained at step 3 while keeping the polymer in the melt to further polymerize the polymer. In an preferred embodiment the aliphatic linear dicarboxylic acid is 1,10-decanedioic acid.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 14, 2017
    Assignee: DSM IP ASSETS B.V.
    Inventors: Pim Gerard Anton Janssen, Ronald Ligthart
  • Patent number: 9163141
    Abstract: A blend comprises at least 50 wt. % polylactic acid and at least 5 wt. % of polymer selected from one or more of: (i) ethylene/unsaturated ester copolymer having an unsaturated ester comonomer content of at least about 30% based on the weight of the ethylene/unsaturated ester copolymer; (ii) modified ethylene/unsaturated ester copolymer; (iii) polyetheramide block copolymer; (iv) propylene/ethylene copolymer comprising at least about 12% and at most about 16% ethylene monomer content based on the weight of the propylene/ethylene copolymer; and (v) styrenic block copolymer. An article such as a tray, film, or sheet may comprise the blend.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: October 20, 2015
    Assignee: Cryovac, Inc.
    Inventors: Michael L. Becraft, Paul A. Hughes, Slawomir Opuszko
  • Patent number: 9012026
    Abstract: The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation: A/X.T A is chosen from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine).(Cb diacid), with a representing the number of carbon atoms of the diamine and b representing the number of carbon atoms of the diacid, a and b each being between 4 and 36, advantageously between 9 and 18, X.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: April 21, 2015
    Assignee: Arkema France
    Inventors: Thierry Briffaud, Philippe Blondel
  • Publication number: 20150085237
    Abstract: A liquid crystal photoalignment agent is provided. The liquid crystal photoalignment agent is a copolymer of a cyclobutane dianhydride (“CBDA”) and a CBDA derivative.
    Type: Application
    Filed: April 24, 2014
    Publication date: March 26, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Suk Hoon KANG, Hoi-Lim KIM, Yeong Rong PARK, Mi Hwa LEE, Jun Woo LEE, Baek Kyun JEON
  • Publication number: 20150079005
    Abstract: Nanocarriers are synthesized with polymers that respond to lower pH and/or ROS by being degraded. The compositions may be utilized to selectively deliver payloads within patients by responding to lower pH and/or ROS at localities within the patient. The present invention also features methods of synthesizing nanocarriers that are degraded by lower pH and/or ROS.
    Type: Application
    Filed: May 7, 2014
    Publication date: March 19, 2015
    Applicant: The Regents of the University of California
    Inventors: Adah Almutairi, Jagadis Sankaranarayanan, Enas Mahmoud, Eric Schopf
  • Patent number: 8975364
    Abstract: This is to provide a polyamide resin which can sufficiently ensure all of a relative viscosity ?r (high degree of polymerization), moldable temperature range estimated from a temperature difference (Td?Tm), heat resistance estimated from a melting point Tm, melt moldability estimated from a temperature difference (Tm?Tc), and low water absorbability as compared with the conventional polyoxamide resin. This is a polyamide resin comprising a dicarboxylic acid-derived unit and a diamine-derived unit being bonded, wherein the above-mentioned dicarboxylic acid contains oxalic acid (Compound A), and the above-mentioned diamine contains 1,6-hexanediamine (Compound B) and 2-methyl-1,5-pentanediamine (Compound C).
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: March 10, 2015
    Assignee: Ube Industries, Ltd.
    Inventors: Shuichi Maeda, Tomoyuki Nakagawa
  • Patent number: 8975363
    Abstract: A shock absorber is prepared from a material formed from branched molecules comprising associative groups. The branched molecules each contains at least bifunctional fragments and at least trifunctional fragments joined together by ester or thioester bridges alone or in combination with amide or urea bridges.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 10, 2015
    Assignee: Arkema France
    Inventors: Manuel Hidalgo, Nicolas Dufaure, Jean-Luc Couturier, Bruno Hemelryck
  • Publication number: 20150065681
    Abstract: Disclosed herein is a method of preparing prepolymer particles. The method includes injecting a prepolymer in a solution state by bottom-up type injection to form prepolymer particles by removing a solvent from the prepolymer in a solution state. The method can prepare prepolymer particles, which can be used in solid-state polymerization, using a bottom-up type flash process.
    Type: Application
    Filed: August 22, 2014
    Publication date: March 5, 2015
    Inventors: Jin Kyu KIM, So Young KWON, Sang Kyun IM, Ki Yon LEE, Suk Min JUN, Gook Geon BAE
  • Publication number: 20150044927
    Abstract: Disclosed herein are compositions and article made therefrom and processes of making them. The composition comprises a polymer, the polymer comprising a repeat unit of formula shown below: wherein the polymer is derived from an aromatic diamine comprising m-phenylene diamine, and an aromatic diacid or a derivative thereof comprising furan dicarboxylic acid or derivative thereof.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 12, 2015
    Applicant: E I Du Pont DE Nemours and Company
    Inventors: Justin W. Chan, Fredrik Nederberg, Bhuma Rajagopalan, Sharlene Renee Williams, Michael W. Cobb
  • Publication number: 20150024158
    Abstract: A copolymer which can be formed from a mixture of nylon 6,12 and nylon 6,10 along with other possible components. The nylon copolymer is not only clear (transparent) but also exhibits high dimensional stability in varying environments, limited water absorption, good wear resistance, the ability to accommodate large amounts of glass fillers, and is more resilient and tougher than either nylon 6,10 or nylon 6, 12. Moreover, the crystallinity rate of this combination of homopolymers is reduced to further improve clarity and transparency.
    Type: Application
    Filed: January 14, 2013
    Publication date: January 22, 2015
    Inventors: Saumitra Bhargava, Keith D. Parks
  • Patent number: 8895690
    Abstract: A copolyamide resin for molding including a diamine component which includes two or more diamines and a dicarboxylic acid component. The diamine component includes 70 mol % or more of a xylylenediamine which includes 20 mol % or more of p-xylylenediamine and the dicarboxylic acid component includes 70 mol % or more of a straight-chain aliphatic dicarboxylic acid having 6 to 18 carbon atoms. The copolyamide resin contains particles having a major diameter of 50 ?m or more in an amount of 1000 particles/g or less, the particles being made of a polyamide having a melting point higher than that of the copolyamide resin by 20° C. or more when measured by a differential scanning calorimetry. The copolyamide resin has very uniform and stable properties and is excellent in any of mechanical properties, heat resistance, chemical and physical properties, and molding properties. An efficient production method of the copolyamide resin, its resin composition, and its molded article are also described.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 25, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Tomomichi Kanda, Minoru Kikuchi, Katsumi Shinohara, Hideyuki Kurose
  • Patent number: 8883048
    Abstract: The present invention relates to a reflector for a light-emitting device consisting of (A) an polyamide composition comprising a polyamide polymerized from (a) a dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine comprising at least 50 mol % of a diamine with a branched main chain.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 11, 2014
    Assignees: Asahi Kasei Chemicals Corporation, Nichia Corporation
    Inventors: Kazuhiko Hashimoto, Kazunori Terada, Masafumi Kuramoto, Motohisa Kitani
  • Patent number: 8877888
    Abstract: A polyamide modified by a multi-functional compound, and a method for producing said polyamide and compositions comprising same are described. A method for the production of a polyamide comprising linear macromolecular chains and star-shaped macromolecular chains is also described. A resulting polyamide having optimal mechanical and rheological properties in order to (i) improve mould filling speed and quality, and (ii) produce moldable compositions with high filler contents is also described.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: November 4, 2014
    Assignee: Rhodia Operations
    Inventors: Franco Speroni, Damien Zaher
  • Publication number: 20140316062
    Abstract: A process for the production of a polyamide containing monomeric units of 1,4-butylene diamine, an aliphatic dicarboxylic acid having 6-12 carbon atoms and a fatty acid based dicarboxylic acid and/or diamine derived there from, which process comprises the steps of: a) making an aquous salt mixture containing 1,4-butylene diamine, the aliphatic dicarboxylic acid having 6-12 carbon atoms and the fatty acid based dicarboxylic acid and/or diamine derived there from, the mixture containing less than 50 wt % water and distilling the mixture to less than 15 wt % of water at a pressure of less than 16 barg, while keeping the mixture at a temperature high enough to keep it liquid, b) starting the polymerization of the mixture obtained in step a) by increasing the temperature until to at least 180° C.
    Type: Application
    Filed: February 10, 2012
    Publication date: October 23, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Pim Gerard Anton Janssen, Rudy Rulkens, Godefridus Bernardus Wilhelmus Leonardus Ligthart
  • Patent number: 8841407
    Abstract: Provided is a polyamide resin having high heat resistance, excellent moldability and excellent mechanical properties. The polyamide resin comprises a diamine unit containing 70 mol % or more of a xylylenediamine unit and a dicarboxylic acid unit containing 70 mol % or more of a straight chain aliphatic dicarboxylic acid unit, wherein the xylylenediamine unit is composed of 50 to 95 mol % of p-xylylenediamine and 50 to 5 mol % of m-xylylenediamine; the straight chain aliphatic dicarboxylic acid unit is composed of 50 to 100 mol % of adipic acid and 0 to less than 50 mol % of sebacic acid or other straight chain aliphatic dicarboxylic acids; the molar ratio of reacted diamine units to reacted dicarboxylic acid units (the number of moles of reacted diamine units/the number of moles of reacted dicarboxylic acid units) is less than 0.994; and the polyamide resin has a number average molecular weight of 10,000 to 25,000 and a melting point of 285° C. or more.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: September 23, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hatsuki Oguro, Jun Mitadera, Hisayuki Kuwahara
  • Patent number: 8816042
    Abstract: Provided are polyamide nanocomposites incorporating carbon nanotubes and other filler species. Also provided are related methods.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: August 26, 2014
    Assignees: The Trustees Of The University Of Pennsylvania, William Marsh Rice University
    Inventors: Mohammad Moniruzzaman, Karen I. Winey, Jayanta Chattopadhyay, W. Edward Billups
  • Patent number: 8785590
    Abstract: The invention provides a polyamide having a dicarboxylic acid unit containing a decahydronaphthalenedicarboxylic acid unit in an amount of 60 mol % or more, and a diamine unit.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: July 22, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kentaro Ishii, Shun Ogawa
  • 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
  • Publication number: 20140170355
    Abstract: Disclosed is a transparent thermoplastic container including a thermoplastic composition including: A) a polyamide resin including a) 10 to 40 mol % of a first repeat unit of formula (I), and b) 60 to 90 mol % of a second repeat unit selected from the group consisting of formula (II) —C(O)(CH2)nC(O)NH(CH2)6NH—??(II); wherein n is an integer selected from 10, 12, and 14; and the mol % of repeat units are based on the total repeat units present in the copolyamide; optionally, B) an aliphatic homopolyamide having one repeat unit selected from the group of formula (II) and C) a functional additive,
    Type: Application
    Filed: December 6, 2013
    Publication date: June 19, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: SHAILESH RATILAL DOSHI
  • Patent number: 8748004
    Abstract: The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation: A/X.T A is chosen from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine).(Cb diacid), with a representing the number of carbon atoms of the diamine and b representing the number of carbon atoms of the diacid, a and b each being between 4 and 36, advantageously between 9 and 18, X.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: June 10, 2014
    Assignee: Arkema France
    Inventors: Thierry Briffaud, Philippe Blondel
  • Publication number: 20140135447
    Abstract: Reactive extrusion can be used in a continuous, solvent-less preparation of imide oligomers involving two competing reactions among three ingredients, the first reaction between a dianhydride and a diamine and the second reaction between an endcap and the diamine. The imide oligomer can form a composite via conventional production methods or via formation of a film from imide oligomer re-melted in an extruder before being impregnated into tape or fabric.
    Type: Application
    Filed: July 3, 2012
    Publication date: May 15, 2014
    Applicant: POLYONE CORPORATION
    Inventors: Joseph C. Golba, Thomas W. Hughes, Roger W. Avakian
  • Patent number: 8697831
    Abstract: The invention is directed to a process for preparing polyamide polymers, particularly nylon 6, 6 and nylon 6, comprising fluoroether functionalized aromatic repeat units. In one embodiment, 1,6 diaminohexane, adipic acid, and fluoroether functionalized terephthallic or isophthallic acid or diester are reacted to form a polymer. The polymers so formed are useful for imparting soil resistance to polyamides, particularly in the form of films, molded parts, fibers, fabrics, and carpets.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: April 15, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, David Neil Marks, Fredrik Nederberg
  • Patent number: 8609751
    Abstract: The instant invention generally provides polymer microfiller composite comprising a molecularly self-assembling material and a microfiller, and a process of making and an article comprising the polymer microfiller composite.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: December 17, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Jerry E. White, Hari Parvatareddy, Felix Achille, Leonardo C. Lopez, Rudolf J. Koopmans, Rene Broos, Steven R. Lakso
  • Publication number: 20130317168
    Abstract: Disclosed are scratch-resistant, transparent and tough copolyamide moulding compounds distinguished by high scratch-resistance, excellent transparency and great toughness, which are suitable for producing transparent moulded articles or transparent coatings. The moulding compounds are obtained by polycondensation of a carboxylic acid mixture including at least one aliphatic dicarboxylic acid and at least one aromatic dicarboxylic acid with at least one cycloaliphatic diamine. Also disclosed are moulded parts or coatings produced from the copolyamide compounds.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 28, 2013
    Applicant: EMS-PATENT AG
    Inventor: Friedrich Severin BUHLER
  • Patent number: 8586704
    Abstract: Compositions and methods for forming surfactants, aqueous dispersions, and curing agents are provided. In one aspect, the invention relates to improved epoxy functional surfactants prepared by reaction of an epoxy composition and an amidoamine composition formed from a blend of acid-terminated polyoxyalkylene polyols. The improved epoxy functional surfactants may be reacted with an excess of epoxy composition and water to result in an aqueous dispersion. The amidoamone composition may be a reaction mixture of a diamine compound and an acid terminated polyoxyalkylene composition formed from two or more polyoxyalkylene polyol compounds. The epoxy functional surfactant may be reacted with amine compounds to form a compound suitable as a curing agent.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: November 19, 2013
    Assignee: Momentive Specialty Chemicals Inc.
    Inventors: Jim D. Elmore, Larry Steven Corley, Jerry R. Hite
  • Publication number: 20130281655
    Abstract: The present invention relates to a polyamide obtainable by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a substituent branched from a main chain.
    Type: Application
    Filed: June 19, 2013
    Publication date: October 24, 2013
    Inventors: Yasukazu SHIKANO, Teruaki SAKUMA, Hiroki MATSUI, Masaaki ARAMAKI, Yu NITTO, Shinji IEDA
  • Patent number: 8557928
    Abstract: A liquid crystal alignment agent is provided that includes a polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulae 1 and 2, each X1, X2, Y1 and Y2 is the same as in the detailed description.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 15, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Eun-Ha Kim, Myoung-Youp Shin, Jae-Deuk Yang, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
  • Publication number: 20130261256
    Abstract: An object of the present invention is to provide a copolymer polyamide which has excellent strength, high-temperature strength, low water absorbance, low blocking properties, releasability and plasticizing time stability, and a copolymer polyamide composition which has excellent vibration fatigue characteristics, surface appearance and continuous productivity. A copolymer polyamide of the present invention is obtained by polymerizing (a) at least one alicyclic dicarboxylic acid, (b) one diamine having 8 or more carbon atoms, and (c) at least one copolymer component selected from the group consisting of the following (c-1) to (c-3): a (c-1) dicarboxylic acid other than the alicyclic dicarboxylic acid; a (c-2) diamine having fewer carbon atoms than the (b) diamine; and a (c-3) lactam and/or aminocarboxylic acid, and the copolymer polyamide satisfies specific conditions.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 3, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Shinji Ieda, Kazunori Terada, Yu Nitto
  • Publication number: 20130211040
    Abstract: A polyimide and a polyimide film obtained by reacting: an aromatic diamine, and 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride, pyromellitic acid dianhydride, p-phenylenediamine and 4,4?-diaminodiphenyl ether, the amount of the component (I) being 0.1 to 10.0 mol % and the amount of the components (II) being 99.9 to 90.0 mol % based on the total amount of the component (I) and the components (II) (in Formula (1), R1, R2, R3 and R4 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a nitrogen-containing group, a linear or branched alkyl group with 1 to 12 carbon atoms, a linear or branched alkenyl group with 2 to 12 carbon atoms, a linear or branched alkoxy group with 1 to 12 carbon atoms, a hydroxyl group, a nitrile group, a nitro group, a carboxyl group, a carbamoyl group and an aromatic group with 6 to 12 carbon atoms).
    Type: Application
    Filed: September 5, 2011
    Publication date: August 15, 2013
    Applicant: JFE CHEMICAL CORPORATION
    Inventors: Hiroaki Nakao, Youhei Inoue, Masanori Kobayashi
  • Publication number: 20130190472
    Abstract: Provided are polyamide nanocomposites incorporating carbon nanotubes and other filler species. Also provided are related methods.
    Type: Application
    Filed: June 27, 2008
    Publication date: July 25, 2013
    Applicants: William Marsh Rice University, The Trustees of the University of Pennsylvania
    Inventors: Mohammad Moniruzzaman, Karen I. Winey, Jayanta Chattopadhyay, W. Edward Billups
  • Publication number: 20130184431
    Abstract: Provided is a polyamide resin having high heat resistance, excellent moldability and excellent mechanical properties. The polyamide resin comprises a diamine unit containing 70 mol % or more of a xylylenediamine unit and a dicarboxylic acid unit containing 70 mol % or more of a straight chain aliphatic dicarboxylic acid unit, wherein the xylylenediamine unit is composed of 50 to 95 mol % of p-xylylenediamine and 50 to 5 mol % of m-xylylenediamine; the straight chain aliphatic dicarboxylic acid unit is composed of 50 to 100 mol % of adipic acid and 0 to less than 50 mol % of sebacic acid or other straight chain aliphatic dicarboxylic acids; the molar ratio of reacted diamine units to reacted dicarboxylic acid units (the number of moles of reacted diamine units/the number of moles of reacted dicarboxylic acid units) is less than 0.994; and the polyamide resin has a number average molecular weight of 10,000 to 25,000 and a melting point of 285° C. or more.
    Type: Application
    Filed: November 8, 2011
    Publication date: July 18, 2013
    Applicant: Mitsubishi Gas Chemical Company ,Inc.
    Inventors: Hatsuki Oguro, Jun Mitadera, Hisayuki Kuwahara
  • 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
  • Publication number: 20130085229
    Abstract: [Problem to be Solved] A main object of the present invention is to provide a polyamide and a polyamide composition capable of rendering good surface appearance stability and outstanding impact resistance properties to a molded article even when molded under rigorous molding conditions. [Solution] The present invention is (A) a polyamide comprising (a) a unit comprising adipic acid and hexamethylenediamine and (b) a unit comprising isophthalic acid and hexamethylenediamine, wherein a ratio of the isophthalic acid component to the total carboxylic acid component in the polyamide is 0.05?(x)?0.5 and a range of blocking ratio (Y) is ?0.3?(Y)?0.8. Also, the polyamide composition of the present invention contains 30 to 95% by mass of the above polyamide and 5 to 70% by mass of (B) an inorganic filler.
    Type: Application
    Filed: June 10, 2011
    Publication date: April 4, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yukiyoshi Sasaki, Hiroshi Oyamada, Yasukazu Shikano
  • Publication number: 20130052384
    Abstract: Disclosed is a copolyamide including 8 to 92 mole percent repeat units of the formula —C(O)(CH2)14C(O)NH(CH2)nNH—??(I) and 8 to 92 mole percent repeat units of the formula —C(O)(CH2)16C(O)NH(CH2)nNH—??(II) wherein n is an integer selected from 4, 6, 10 and 12; thermoplastic compositions including the copolyamide; and molded and extruded articles prepared from the thermoplastic compositions.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 28, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: JOHN GAVENONIS, Anna Kutty Mathew
  • Publication number: 20130041128
    Abstract: A polyamide compound containing from 25 to 50 mol % of a diamine unit that contains at least 50 mol % of an alicyclic diamine unit represented by the following general formula (I); from 25 to 50 mol % of a dicarboxylic acid unit that contains a linear aliphatic dicarboxylic acid unit represented by the following general formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following general formula (II-2) in an amount of at least 50 mol % in total; and from 0.1 to 50 mol % of a constituent unit represented by the following general formula (III): wherein, in the formulae, n indicates an integer of from 2 to 18; Ar represents an arylene group; and R represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.
    Type: Application
    Filed: February 23, 2011
    Publication date: February 14, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY,INC.
    Inventors: Takafumi Oda, Ryoji Otaki, Tsuneaki Masuda
  • Publication number: 20130020021
    Abstract: An adhesive agent comprising a condensation resin having a structural unit obtained by polycondensing a polymerizable monomer containing a monomer (A) having 2 or more carboxyl groups and a monomer (B) having 2 or more amino groups, and meeting at least one of the following (1) and (2), and the following (3): (1) at least one selected from the group consisting of the monomer (A), an anhydride of the monomer (A). and the monomer (B) is liquid at 25° C.; (2) the condensation resin has a polyoxyalkanediyl group; and (3) the monomer (A) contains an isophthalic acid.
    Type: Application
    Filed: April 12, 2012
    Publication date: January 24, 2013
    Inventors: Katsuyuki MASUDA, Masatoshi Yamaguchi, Eiichi Shinada, Takehiro Fukuyama, Yoshihiro Sakairi
  • 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
  • Publication number: 20120301659
    Abstract: Polyamide terpolymer compositions, which contain biobased monomers and are suitable for making shaped articles, are disclosed. Comprised of three monomeric species polymerized randomly, including hexamethylene diamine, adipic acid and a bio-based monomer, the compositions are easier to process and have better dye uniformity than polyamides formed from melt-blended biobased components, and are comparable in dyeability, color fastnessand appearance retention performance to non-biobased polyamide copolymers.
    Type: Application
    Filed: January 31, 2011
    Publication date: November 29, 2012
    Applicant: INVISTA North America S.a r.I.
    Inventor: Sundar Mohan Rao
  • Publication number: 20120273731
    Abstract: Polyimide resin compositions that contain an end-capped rigid aromatic polyimide, graphite and, optionally, a filler selected from sepiolite, attapulgite, kaolinite, or a mixture thereof, are found to exhibit low wear at high temperatures. Such compositions are especially useful in molded articles that are exposed to wear conditions at high temperatures such as aircraft engine parts.
    Type: Application
    Filed: October 27, 2010
    Publication date: November 1, 2012
    Applicant: E.I. Du Pont De Nemours And Company
    Inventors: Jesus G. Moralez, Robert Ray Burch, Timothy D. Krizan, Lloyd Abrams
  • Publication number: 20120245308
    Abstract: The present invention relates to a process for preparing a polyamide based on dicarboxylic acids and diamines, comprising the following stages: A) providing an aqueous monomer mixture composed of dicarboxylic acids and diamines, where the molar ratio of dicarboxylic acids to diamines is adjusted such that, at the outlet of stage C), there is a molar deficiency of dicarboxylic acids or diamines of 1 to 10 mol%, based on the respective other component, B) transferring the aqueous mixture from stage A) into a continuous evaporator reactor in which diamines and dicarboxylic acids are converted at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar, C) transferring the mixture from stage B) into a separator which is operated at a temperature in the range from 100 to 370° C.
    Type: Application
    Filed: December 3, 2010
    Publication date: September 27, 2012
    Applicant: BASF SE
    Inventors: Faissal-Ali El-Toufaili, Philippe Desbois, Andreas Wollny, Sven Lawrenz, Christian Schmidt
  • 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
  • Patent number: 8268937
    Abstract: The invention pertains to an aramid copolymer composition comprising an aramid copolymer having at least one arylene carboxylic acid moiety and at least one hydroxyarylene moiety, or comprising an aramid copolymer having at least one arylene carboxylic acid moiety or having at least one hydroxyarylene moiety, and a crosslinker agent. The invention further relates to crosslinked copolymers derived thereof and shaped articles comprising said crosslinked copolymers.
    Type: Grant
    Filed: September 1, 2007
    Date of Patent: September 18, 2012
    Assignee: Teijin Aramid B.V.
    Inventors: Johannes Bos, Sandra Corien Noordewier
  • Publication number: 20120228564
    Abstract: The present invention relates to a reflector for a light-emitting device consisting of (A) an polyamide composition comprising a polyamide polymerized from (a) a dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine comprising at least 50 mol % of a diamine with a branched main chain.
    Type: Application
    Filed: September 7, 2010
    Publication date: September 13, 2012
    Applicants: NICHIA CORPORATION, ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiko Hashimoto, Kazunori Terada, Masafumi Kuramoto, Motohisa Kitani
  • Publication number: 20120181529
    Abstract: Provided is a layered structure having a first electrode, a second electrode, a light emitting layer or a charge separation layer located between the first electrode and the second electrode, and a layer located between the light emitting layer or the charge separation layer and the first electrode and containing a polymer having a repeating unit containing one or more ionic groups selected from two specific groups and one or more specific polar groups. Also provided is a polymer having, as the repeating unit containing one or more ionic groups selected from two specific groups and one or more specific polar groups, one or more repeating units selected from four specific repeating units containing an aromatic group. The layered structure of the present invention provides an electroluminescent device capable of emitting light at a high luminance and a photoelectric conversion device having a high photoelectric conversion efficiency.
    Type: Application
    Filed: September 28, 2010
    Publication date: July 19, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masanobu Tanaka, Kenta Tanaka, Ken Sakakibara, Hideyuki Higashimura, Rui Ishikawa
  • Publication number: 20120178876
    Abstract: To provide a polyamide copolymer that is excellent in terms of rigidity after water absorption (water absorption rigidity) and rigidity under high temperature use (thermal rigidity). A polyamide copolymer comprising a dicarboxylic acid component unit containing an (a) adipic acid unit, a (b) isophthalic acid unit and a (c) 1,4-cyclohexanedicarboxylic acid unit, and a diamine component unit, wherein a relationship between a content (mol %) of the (b) and a content (mol %) of the (c) in a total of 100 mol % of the dicarboxylic acid component unit containing the (a), the (b) and the (c) satisfies following formula (1): (c)>(b)?0.1??(1).
    Type: Application
    Filed: September 8, 2010
    Publication date: July 12, 2012
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yukiyoshi Sasaki, Norio Sakata, Teruaki Sakuma, Hiroshi Oyamada
  • Publication number: 20120172572
    Abstract: The invention provides a polyamide having a dicarboxylic acid unit containing a decahydronaphthalenedicarboxylic acid unit in an amount of 60 mol % or more, and a diamine unit.
    Type: Application
    Filed: August 18, 2010
    Publication date: July 5, 2012
    Applicant: Mitsubishi Gas Chemical Company ,Inc.
    Inventors: Kentaro Ishii, Shun Ogawa
  • Patent number: 8211975
    Abstract: A fuser member and image forming apparatus including the fuser member for use in oil-less systems, wherein the fuser member includes a substrate, and thereover, an outer layer having a fluorinated polyimide of the following Formula I: wherein Ar independently represents a fluorinated hydrocarbon group, Rf2 and Rf3 individually represent a fluorine-containing group, L represents a linkage group, l and m each individually represent a mole fraction of repeating units, wherein the value ranges from about 0.1 to about 0.99, p represents an integer ranging from about 20 to about 1,000, Q is an end group, and o is 0 or 1.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu
  • Publication number: 20120165466
    Abstract: [Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60? equivalents/g.
    Type: Application
    Filed: September 7, 2010
    Publication date: June 28, 2012
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yu Nitto, Yasukazu Shikano, Shinji Ieda, Kazunori Terada, Masaaki Aramaki
  • Patent number: 8178598
    Abstract: A curing agent for epoxy resin, and a coating composition using the curing agent curing agent that delivers excellent recoatability and overcoatability after a long time exposure. (A) An epoxy curing agent that is derived by adduction between amide-type reactants from polyamine compounds comprising from 25-75 mol % of a polyoxyalkylene-polyamine and carboxylic acids or a mixture thereof and glycidyl ether compound; (B) An epoxy curing agent of the mixture of (B1) amide-type reactants prepared through polyoxyalkylene-polyamine and carboxylic acids or a mixture thereof, and (B2) a reactant is derived by adduction between other aliphatic polyamines or a mixture thereof and glycidyl ether compound. Coating composition comprising the epoxy curing agent of the above described A or B.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: May 15, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Keisuke Hakuya, Michael Ian Cook, Kouichi Sakasegawa, Yoshimi Hasegawa