Material Contains A Nitrogen Atom As A Ring Member Of A Heterocyclic Ring Other Than Where Nitrogen Heterocycle Is Solely Part Of A Lactam Ring Patents (Class 528/314)
  • Patent number: 9040653
    Abstract: This disclosure provides methods of controlled polymerization of cyclic compounds catalyzed by carbene derivatives having a general formula as shown below, and to obtain a biodegradable polymeric material having a large molecular weight, a narrow dispersity, and no metallic impurity.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 26, 2015
    Assignee: NANJING UNIVERSITY OF TECHNOLOGY
    Inventors: Zhenjiang Li, Pingkai Ouyang, He Huang
  • Publication number: 20150087776
    Abstract: A multi-stage process and system for formation of a polyarylene sulfide is described. The multi-stage process can include at least three separate formation stages that can take place in three different reactors. The first stage of the formation process can include reaction of an alkali metal sulfide with an organic amide solvent to form a complex including a hydrolysis product of the solvent and an alkali metal hydrogen sulfide. The second stage of the formation process can include reaction of the complex formed in the first stage with a dihaloaromatic monomer to form a prepolymer, and the third stage can include further polymerization of the prepolymer with additional monomers to form the final product.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 26, 2015
    Inventors: Hendrich Chiong, Michael Haubs, Damian Feord, Stanley Leonard, Jacob Grayson, Venkata Nekkanti
  • Patent number: 8987409
    Abstract: The present invention relates to a composition that can be used to manufacture an impermeable, sealing, tight envelope, to a process for manufacturing an impermeable envelope, and to a tank. The composition of the invention comprises in % by weight relative to the total weight of the composition: from 70 to 90% of a monomer (I); from 0.1 to 1% of an activator (II), in which R is chosen from the group comprising CnH2n+2, n being an integer chosen from 1 to 10; —OH; —OCn H2n+2, n being an integer chosen from 1 to 10; and —NHR? where R? is either CnH2n+2, n being an integer chosen from 1 to 10, or an amine functional group; from 2 to 6% of a catalyst (III), in which X is chosen from the group comprising MgBr, MgI, Li and Na; and from 10 to 20% of an additive (IV), with: This composition can be used, for example, to manufacture elements that are impermeable to fluids, for example impermeable envelopes, for example that can be used in the manufacture of type IV tanks or hydraulic accumulators.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: March 24, 2015
    Assignees: Commissariat a l'Energie Atomique, L'Air Liquide, Societe Anonyme pour l'etude et l'exploitation des procedes Georges Claude
    Inventors: Philippe Mazabraud, Elodie Chauvot, Laurent Delnaud, Katia Barral
  • Patent number: 8981039
    Abstract: The present invention relates to a composition that can be used to manufacture an impermeable, sealing, tight envelope, to a process for manufacturing an impermeable envelope, and to a tank. The composition of the invention comprises in % by weight relative to the total weight of the composition: from 70 to 90% of a monomer (I); from 0.1 to 1% of an activator (II), in which R is chosen from the group comprising CnH2n+2, n being an integer chosen from 1 to 10; —OH; —OCnH2n+2, n being an integer chosen from 1 to 10; and —NHR? where R? is either CnH2n+2, n being an integer chosen from 1 to 10, or an amine functional group; from 2 to 6% of a catalyst (III), in which X is chosen from the group comprising MgBr, MgI, Li and Na; and from 10 to 20% of an additive (IV), with: This composition can be used, for example, to manufacture elements that are impermeable to fluids, for example impermeable envelopes, for example that can be used in the manufacture of type IV tanks or hydraulic accumulators.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: March 17, 2015
    Assignees: Commissariat a l'Energie Atomique, L'Air Liquide, Societe Anonyme pour l'etude et l'exploitation des procedes Georges Claude
    Inventors: Philippe Mazabraud, Elodie Chauvot, Laurent Delnaud, Katia Barral
  • Patent number: 8957180
    Abstract: The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 17, 2015
    Assignee: BASF SE
    Inventors: Dietrich Scherzer, Philippe Desbois, Freddy Gruber, Achim Stammer
  • Publication number: 20150004862
    Abstract: The invention relates to a polyimide containing polymaleic anhydride having the formula: wherein X represents functional groups having carbon chain with carbon numbers more than 10, benzene ring and a combination of carbon chain with carbon numbers more than 10 and benzene ring; and m, n and l are integers, and larger than or equal to 1.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: Chao-Hui KUO, Ming-Hung HUANG, Po-Hsun LEE, Shun-Cheng WANG
  • Patent number: 8802809
    Abstract: The present invention relates to a new method of production of cast polyamides.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: August 12, 2014
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Wilhelm Laufer, Armin Eckert
  • 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: 8658756
    Abstract: The present invention relates to a composition that can be used to manufacture an impermeable, sealing, tight envelope, to a process for manufacturing an impermeable envelope, and to a tank. The composition of the invention comprises in % by weight relative to the total weight of the composition: from 70 to 90% of a monomer (I); from 0.1 to 1% of an activator (II), in which R is chosen from the group comprising CnH2n+2, n being an integer chosen from 1 to 10; —OH; —OCnH2n+2, n being an integer chosen from 1 to 10; and —NHR? where R? is either CnH2n+2, n being an integer chosen from 1 to 10, or an amine functional group; from 2 to 6% of a catalyst (III), in which X is chosen from the group comprising MgBr, MgI, Li and Na; and from 10 to 20% of an additive (IV), with: This composition can be used, for example, to manufacture elements that are impermeable to fluids, for example impermeable envelopes, for example that can be used in the manufacture of type IV tanks or hydraulic accumulators.
    Type: Grant
    Filed: November 23, 2006
    Date of Patent: February 25, 2014
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Philippe Mazabraud, Elodie Chauvot, Laurent Delnaud, Katia Barral
  • Publication number: 20130123458
    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: Application
    Filed: January 7, 2013
    Publication date: May 16, 2013
    Applicants: The Board of Directors of the Leland Stanford Junior University, International Business Machines Corporation
    Inventors: International Business Machines Corporation, The Board of Directors of the Leland Stanford Junior University
  • Patent number: 8420771
    Abstract: Provided are a new pH-sensitive co-polymer prepared from polyethylene oxide and a method of preparing the same. The polyethylene oxide co-polymer includes repeating units expressed by the Chemical Formulas 1 and 2, and further includes at least one of repeating units expressed by the Chemical Formulas 3 through 6.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: April 16, 2013
    Inventors: Jung-Ahn Kim, Hyun-Oh Yoo
  • 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: 8318894
    Abstract: The present invention generally relates to compositions and methods comprising charged polymers. The compositions can be used in a variety of applications, for example, in photovoltaic cells, field-effect transistors, and light emitting diodes. In some embodiments, the backbone of a charged polymer comprises at least one quaternary nitrogen and/or is conjugated.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: November 27, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Timothy M. Swager, Daisuke Izuhara
  • Patent number: 8293322
    Abstract: The invention relates to products and processes employing coupling activator compounds represented by the following formula I: S—X-A??(I) wherein S represents a silane coupling moiety capable of bonding with the surface of an inorganic substrate, A represents a ring-opening polymerization activator moiety, or blocked precursor thereof, and X represents a linking moiety. Substrates containing the coupling activator compounds are useful in preparing reinforced resins.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 23, 2012
    Assignee: Johns Manville
    Inventors: Thomas Burghardt, Jawed Asrar, Klaus Friedrich Gleich
  • Patent number: 8058235
    Abstract: Methods of making copolymers are described.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: November 15, 2011
    Assignee: Momenta Pharmaceuticals, Inc.
    Inventors: Claire Coleman, John Schaeck, Alicia Thompson
  • Patent number: 8058358
    Abstract: The invention provides hyper-branched polymer manufactured by adding a bismaleimide and a barbituric acid into a Brönsted base solution and reacting the mixture at 20 to 100° C. The formation may further include maleimide monomer and/or multi-maleimide monomer to modify the hyper-branched polymer properties. In addition, the barbituric acid is added to the reaction in a batch not initially charged with other reactants in a one-pot.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 15, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Jing-Pin Pan, Tsung-Hsiung Wang
  • Patent number: 7750112
    Abstract: The present invention relates to polymers comprising benzotriazole containing repeating units. Optical devices, comprising the polymers of the present invention, can show significant advantages in color purity, device efficiency and/or operational lifetime. In addition, the polymers can have good solubility characteristics and relatively high glass transition temperatures, which facilitates their fabrication into coatings and films that are relatively thin, thermally stable, and relatively free of defects.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: July 6, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Jonathan Rogers, Michael Robert Craig, Thomas Schäfer
  • Publication number: 20100104794
    Abstract: A thermosetting epoxy resin composition characterized by containing as a resin ingredient a product of pulverization of a solid matter obtained by reacting a triazine derivative/epoxy resin with an acid anhydride in such a proportion that the amount of the epoxy groups is 0.6-2.0 equivalents to the acid anhydride groups.
    Type: Application
    Filed: July 28, 2006
    Publication date: April 29, 2010
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takayuki Aoki, Toshio Shiobara
  • Publication number: 20100048735
    Abstract: The invention concerns novel biodegradable polyaminoacid materials, useful in particular for vectoring active principles(s). The invention also concerns novel pharmaceutical, cosmetic dietetic or phytosanitary compositions based on said polyaminoacids. The invention aims at providing a novel polymer raw material, capable of being used for vectoring active principles and enabling optimal fulfillment of all specified requirements: biocompatibility, biodegradability, easy and inexpensive transformation into particles vectoring active principles, said particles being themselves capable of forming colloidal suspensions, of being easily associated with numerous active principles, and of releasing said active principles in vivo.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 25, 2010
    Applicant: Flamel Technologies, S.A.
    Inventors: You-Ping Chan, Stéphanie Angot, Olivier Breyne
  • Publication number: 20100022716
    Abstract: The invention provides hyper-branched polymer manufactured by adding a bismaleimide and a barbituric acid into a Brönsted base solution and reacting the mixture at 20 to 100° C. The formation may further include maleimide monomer and/or multi-maleimide monomer to modify the hyper-branched polymer properties. In addition, the barbituric acid is added to the reaction in a batch not initially charged with other reactants in a one-pot.
    Type: Application
    Filed: December 12, 2008
    Publication date: January 28, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jing-Pin Pan, Tsung-Hsiung Wang
  • Patent number: 7635747
    Abstract: Mixtures or adducts of N-heterocyclic carbenes with metal amides or metal alkoxides are effective catalysts for the polymerization of cyclic amides. The catalysts are stable at polymerization temperatures, and the polymerization is rapid, resulting in high monomer conversion, high molecular weight, and a mechanically sound material.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: December 22, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Wilson Tam, David T. Williamson
  • Publication number: 20090198039
    Abstract: Process for the preparation of a polymer comprising the polymerisation of corresponding monomers in the presence of a triazine compound of the formula where R1=-A-B where A=—O— or —NR4—, B=amino group-containing substituent and R4=hydrogen or alkyl group R2= where E=—O— or —NR5—, n=3 to 15, m=0 to 10 and R5 hydrogen or alkyl group R3=R1, R2, —OR6 or —NR7R8 where R6, R7 and R8=hydrogen, alkyl or aryl group, which in each case may be substituted or non-substituted.
    Type: Application
    Filed: November 16, 2006
    Publication date: August 6, 2009
    Inventors: Hendrik J. Berg Van Den, Albert A. Geenen,Van
  • Patent number: 7514499
    Abstract: N-heterocyclic carbenes are effective catalysts for the ring opening polymerization of cyclic amides. The catalysts provide rapid polymerization, high monomer conversion, high molecular weight, and a mechanically sound material.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: April 7, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Wilson Tam, David T. Williamson
  • Patent number: 7465780
    Abstract: The present invention is related to a polyimide, which has high ionic conductivity and good structural stability, does not decompose even under low humidity, and is inexpensive, and a polymer electrolyte and a fuel cell using the same.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: December 16, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myung-sup Jung, Do-yun Kim, Min-ju Jeong
  • Patent number: 7163996
    Abstract: Polyamides useful as hotmelt adhesives and having improved resistance to hydrocarbons such as gasoline are obtained by reacting a) an acid component containing at least one C6 to C22 aliphatic dicarboxylic acid and b) an amine component containing at least one straight chain alkylene diamine having from 2 to 8 carbon atoms and at least one heterocyclic secondary diamine. The amine component may optionally also contain at least one branched chain alkylene diamine having from 3 to 10 carbon atoms and/or at least one C24 to C48 dimer amine.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: January 16, 2007
    Assignee: Henkel Corporation
    Inventors: Tina Nataniel, Dwight Heinrich
  • Patent number: 7160979
    Abstract: The reaction of dimer acids, C6 to C18 aliphatic dicarboxylic acids, dimer amines, alkylene diamines having from 2 to 8 carbon atoms, and polyoxyalkylene diamines provides polyamides having excellent cold flexibility, high heat resistance, and low moisture absorbency (low water vapor transmission).
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: January 9, 2007
    Assignee: Henkel Corporation
    Inventors: Tina Nataniel, Dwight Heinrich
  • Patent number: 7101959
    Abstract: A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 5, 2006
    Assignees: Societe de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S.), Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Anca Dumitrescu, Heinz Gornitzka, Blanca Martin-Vaca, Didier Bourissou, Guy Bertrand, Jean-Bernard Cazaux
  • Patent number: 7074851
    Abstract: The invention relates to a process for preparing stabilized compositions based on polyamide. The stabilizer is a phosphorus stabilizer selected from phosphorous acid and hypophosphorous acid. It is introduced before or during the polymerization of the polyamide. The use of these stabilizers prevents foaming phenomena.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 11, 2006
    Assignee: Nylstar S.A.
    Inventors: Thierry Charbonneaux, Jean-François Thierry
  • Patent number: 7049391
    Abstract: The invention relates to a method for reducing the caprolactam content of polyamide 6 obtained especially by hydrolytic polymerization of epsilon-caprolactam. The method is characterized by the use of an additive that forms isocyanuric acid under the influence of heat. The additive or the isocyanuric acid produced externally under the influence of heat is added (a) to the polymerization or (b) to a melt of polyamide 6. This enables the caprolactam content of the polyamide 6 to be reduced considerably compared to that of usual commercial polyamide 6. In particular, the resulting polyamide 6 shows good characteristics for reprocessing e.g. into fiber and molding masses by melt extension.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: May 23, 2006
    Assignee: BASF Aktiengeselleschaft
    Inventors: Frank Gähr, Frank Hermanutz, Mirko Peczyoski
  • Patent number: 6852828
    Abstract: A poly amic acid precursor containing a combination of tetrahydrofuran and N-methylpyrrolidinone as cosolvents is described. Utilizing the combination of tetrahydrofuran and N-methylpyrrolidinone allows for the removal of significant portions of the solvent during the formation of the polyimide. The removal of tetrahydrofuran and N-methylpyrrolidinone can be done without the use of preheating zones so as to allow for the large scale production of polyimide articles.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: February 8, 2005
    Assignee: Medtronic, Inc.
    Inventor: Lisa Scott
  • Publication number: 20040249115
    Abstract: Disclosed are methods of synthesis of copoly(succinimide-aspartate), copolymers and derivatives thereof, prepared in a thermal or supercritical fluid method in the presence of an end capping initiator. Also disclosed are methods of isolating, compounding, stabilizing and processing the copoly(succinimide-aspartate), and its derivatives.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 9, 2004
    Inventors: Graham Swift, George H. Redlich
  • Patent number: 6812323
    Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I) where R is a functional group R8 which bears 1-4 identical or different amide-forming groups R7, R1 is H, C1-C20-alkyl, cycloalkyl, benzyl or OR6, where R6 is H, C1-C20-alkyl, cycloalkyl or benzyl, R2, R3, R4 and R5 are independently C1-C10-alkyl, n is a natural number greater than 1, and the piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R1, R2, R3, R4 and R5. The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: November 2, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrike Breiner, Manfred Julius, Rainer Neuberg, Robert Weiss, Axel Wilms, Harry Y. Hu
  • Publication number: 20040049005
    Abstract: The invention relates to a method for reducing the caprolactam content of polyamide 6 obtained especially by hydrolytic polymerization of epsilon-caprolactam. The method is characterized by the use of an additive that forms isocyanuric acid under the influence of heat. The additive or the isocyanuric acid produced externally under the influence of heat is added (a) to the polymerization or (b) to a melt of polyamide 6. This enables the caprolactam content of the polyamide 6 to be reduced considerably compared to that of usual commercial polyamide 6. In particular, the resulting polyamide 6 shows good characteristics for reprocessing e.g.
    Type: Application
    Filed: August 8, 2003
    Publication date: March 11, 2004
    Inventors: Frank Gahr, Frank Hermanutz, Mirko Peczyoski
  • Patent number: 6548621
    Abstract: The invention provides a poly(imide-benzoxazole) (PIBO) copolymer prepared from a trimellitic anhydride halide monomer and a bis(o-diaminophenol) monomer. The PIBO copolymer is characterized by the following recurring unit: wherein X is —O—, —S—, —C(CF3)2—, —C(CH3)2—, —CO—, —CH2—, —SO2—, —SO—, or deleted; and n is an integer. The PIBO copolymers of this invention are particularly useful as dielectric layers in semiconductor devices because they possess hydroxyl groups which create better adhesion to semiconductor substrates.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: April 15, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Shih-Jung Tsai, Steve Lien-Chung Hsu, Yuan-Pin Huang
  • Patent number: 6433184
    Abstract: The present invention relates to polyamide-imides having head-to-tail backbone and more particularly, to polyamide-imimdes having head-to-tail ragularity to provide excellent heat and chemical resistance, physical and mechanical properties, processability, and gas permeability and selectivity.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: August 13, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Kil-Yeong Choi, Jae Heung Lee, Young-Taik Hong, Moon Young Jin, Kyoung-Su Choi, Ho-Jin Park
  • Publication number: 20020055610
    Abstract: Novel polyimides substituted by a substituent having an alkyl or fluoroalkyl group and having reduced water absorption; a process for producing these novel polyimides; and novel acid dianhydrides to be used in the production thereof.
    Type: Application
    Filed: December 21, 2001
    Publication date: May 9, 2002
    Applicant: KANEKA CORPORATION
    Inventors: Koji Okada, Shoji Hara
  • Patent number: 6297345
    Abstract: A polyamide with excellent stretching properties is disclosed, which comprises 50 to 99.8 mol % of a unit derived from a lactam and/or an aminocarboxylic acid, 0.1 to 25 mol % of a unit derived from a dicarboxylic acid, and 0.1 to 25 mol % of a unit derived from a diamine component containing 10 to 100 mol % of at least one compound selected from the group consisting of a branched saturated diamine having 6 to 22 carbon atoms, a branched alicyclic diamine having 6 to 16 carbon atoms, and a norbornanediamine.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: October 2, 2001
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroshi Okushita, Shoichi Tanaka
  • Patent number: 6133406
    Abstract: The present invention relates to a process for preparing an aromatic polyamide which comprises:(A) a dicarboxylic acid component unit comprising 30 to 100 mol % of a terephthalic acid component unit, and, as required, 0 to 70 mol % of a cyclic dicarboxylic acid component unit other than the terephthalic acid and, as required, 0 to 15 mol % of an aliphatic dicarboxylic acid having 7 to 20 carbon atoms; and(B) a diamine unit comprising 50 to 100 mol % of a component unit derived from an aliphatic alkylene diamine having 4 to 25 carbon atoms, and 0 to 50 mol % of a component unit derived from an alicyclic diamine having 3 to 25 carbon atoms; said process comprising:a step (i) of preparing a solid low-degree condensation product having an intrinsic viscosity [.eta.].sub.1 of from 0.05 to 0.2 dl/g is prepared by the polycondensation reaction of the dicarboxylic acid with the diamine;a step (ii) of solid-phase polymerizing said low-degree condensation product at a temperature of not higher than 195.degree. C.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: October 17, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masaki Kosaka, Yukio Muranaka, Kenji Wakatsuru
  • Patent number: 6025457
    Abstract: Novel molten-salt type polyelectrolytes are disclosed which contain as an essential ingredient a molten salt polymer obtained by reacting an imidazolium derivative, such as a 1,3-dialkylimidazolium halide, 1,2,3-trialkylimidazolium halide, 1-vinyl-3-alkylimidazolium halide, or 1-vinyl-2,3-alkylimidazolium halide, with an acid monomer, a poly(vinylsulfonamide), trifluoromethanesulfonimide, or the like. The electrolytes show high ionic conductivity at room temperature and have excellent stability to temperature fluctuations and excellent mechanical properties.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: February 15, 2000
    Assignee: Shikoku Chemicals Corporation
    Inventors: Hiroyuki Ohno, Kaori Ito
  • Patent number: 5998571
    Abstract: A method for manufacturing shaped parts by polymerization of lactams in a mold includes the steps of providing a melt consisting of at least one catalyst, at least one activator, and amino-terminated polyethers in a mold and providing as the catalyst a 17% by weight solution of sodium lactamate in an amount of 1.0 weight-% to 3.8 weight-%.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: December 7, 1999
    Assignee: G. Schwartz GmbH & Co. KG
    Inventor: Bernd Nussdorfer
  • Patent number: 5985969
    Abstract: Polyimide precursor solutions comprise an organic liquid and the reaction product of an aromatic dianhydride and an aromatic diaminobenzoxazole capped, on at least one terminal end, with a bifunctional chain extender. The bifunctional chain extender has one functional group reactive with the amine of the aromatic diaminobenzoxazole or the anhydride of the aromatic dianhydride and another functional group which does not form amic acid linkages, but which is capable of further reaction to increase the molecular weight of the polyimide precursor under conditions other than those used to react the aromatic diamine and aromatic dianhydride to form the polyimide precursor. These polyimide precursors can be converted into polyimidebenzoxazole polymers.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: November 16, 1999
    Assignee: The Dow Chemical Company
    Inventors: William J. Harris, Wen-Fang Hwang
  • Patent number: 5866673
    Abstract: The invention relates to polymerisable double-bond derived polyamides obtainable by reacting the polyamide in an aqueous solution with a compound which contains both a polymerisable double bond and an oxirane ring. These derived polyamides may be processed to provide graft polymers with improved properties.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: February 2, 1999
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Egbert Muller, Anja Seiler, Roland Gensert
  • Patent number: 5807969
    Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure:M--CO--R*--CO--Mwhere M stands for the residue of an (optionally substituted) 2-hydroxybenzoxazole, 2-hydroxybenzothiazole, or 1-hydroxybenzotriazole or of corresponding mercapto compounds and R* is the parent body of the dicarboxylic acid.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: September 15, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Recai Sezi, Hellmut Ahne, Eberhard Kuehn, Roland Gestigkeit
  • Patent number: 5783654
    Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid ester with the following structure:G--O--CO--R*--CO--O--G,where G is an (optionally substituted) succinimide or maleinimide group and R* is the parent body of the dicarboxylic acid.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: July 21, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Recai Sezi, Hellmut Ahne
  • Patent number: 5750638
    Abstract: A method for producing poly-o-hydroxy amides by heating a dicarboxylic acid to a temperature .gtoreq.80.degree. C., together with a sulfonic acid chloride and a tertiary amine in a suitable solvent, to form a reaction mixture and reacting the mixture obtained with a bis-o-aminophenol solution at a temperature <80.degree. C.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: May 12, 1998
    Assignee: Siemens Aktiengesesllschaft
    Inventors: Recai Sezi, Hellmut Ahne, Roland Gestigkeit
  • Patent number: 5747634
    Abstract: A continuous process for activated anionic lactam polymerization is proposed, wherein a liquid system is employed, which simultaneously contains activator and anionic catalyst for the polymerization of lactam.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: May 5, 1998
    Assignee: EMS-Inventa AG
    Inventors: Eduard Schmid, Roman Eder
  • Patent number: 5744125
    Abstract: Disclosed are cosmetic melanins of different colors produced by procedures involving oxidative polymerization of monomeric precursors of melanin and/or co-monomers that enhance substantivity or adherence of the melanins to the skin and hair. Also disclosed are methods for preparing cosmetic melanins and methods for using these compositions topically to produce a natural-appearing tan and to prevent damage to skin caused by UV exposure.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: April 28, 1998
    Assignee: Yale University
    Inventors: John M. Pawelek, James T. Platt
  • Patent number: 5741585
    Abstract: Polyimide precursor solutions comprise an organic liquid and the reaction product of an aromatic dianhydride and an aromatic diaminobenzoxazole capped, on at least one terminal end, with a bifunctional chain extender. The bifunctional chain extender has one functional group reactive with the amine of the aromatic diaminobenzoxazole or the anhydride of the aromatic dianhydride and another functional group which does not form amic acid linkages, but which is capable of further reaction to increase the molecular weight of the polyimide precursor under conditions other than those used to react the aromatic diamine and aromatic dianhydride to form the polyimide precursor. These polyimide precursors can be converted into polyimidebenzoxazole polymers.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: April 21, 1998
    Assignee: The Dow Chemical Company
    Inventors: William J. Harris, Wen-Fang Hwang
  • Patent number: 5688902
    Abstract: Process for the preparation of polyimides or of their polypeptide hydrolysates which are at least 80% biodegradable, by thermal polycondensation of at least one amino acid, optionally followed by hydrolysis, the thermal polycondensation step being carried out in the presence of at least one "acid catalyst" chosen fromsulphuric, nitric, phosphorous, sulphurous, hydrofluoric, silicic and sulphonic acids, organic sulphonic acids containing less than 50 carbon atoms, amino acids bearing a non-carboxyl strong acid function, organic phosphonic acids, organic carboxylic acids having a pK.sub.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: November 18, 1997
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean-Marie Bernard, Jean-Luc LePage, Arnaud Ponce, Florence Tournilhac
  • Patent number: 5641855
    Abstract: There are described water-soluble condensation products of amino-containing compounds and crosslinkers, obtainable by reacting(a) polyalkylenepolyamines, polyamidoamines, ethylene-imine-grafted polyamidoamines, polyetheramines and mixtures thereof, with(b) monethylenically unsaturated carboxylic acids, salts, esters, amides or nitriles of monoethylenically unsaturated carboxylic acids, chlorocarboxylic acids and/or glycidyl compounds such as glycidic acid, glycidamide or glycidyl esters, and(c) at least bifunctional crosslinkers having a halo-hydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as functional group,to form water-soluble condensation products having a viscosity of at least 100 mPas in a 20% strength by weight aqueous solution at 20.degree. C., processes for preparing the water-soluble condensation products by reacting the abovementioned compounds of groups (a), (b) and (c), and the use of the condensation products as drainage, flocculation and retention aids in papermaking.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: June 24, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Scherr, Wolfgang Reuther, Dietmar Moench, Friedrich Linhart, Juergen Weiser