Polymerizing In The Presence Of A Specified Material Other Than Reactant Patents (Class 528/312)
  • Patent number: 10543648
    Abstract: A process arrangement and a process for the production of a fiber-reinforced plastics component made of at least one continuous-fiber-reinforced semifinished textile fiber product with reactive thermoplastic matrix material, where during the manufacture of the semifinished fiber product trimming residues arise, composed of a composite made of fibers and of the reactive thermoplastic matrix material. The trimming residues obtained during the manufacture of the semifinished fiber product are supplied to a recycling unit for the provision of a recyclate as reactive, as yet unpolymerized starting material for the production of a further component.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: January 28, 2020
    Assignees: VOLKSWAGEN AKTIENGESELLSCHAFT, BASF SE
    Inventors: Thomas Mertens, Max Ehleben, Christine Kunze, Olaf Täger, Maurice Bitterlich, Katja Zeuner, Philippe Desbois, Andreas Wollny
  • Patent number: 10364334
    Abstract: Continuous production equipment for graphene composite material includes a raw material preparation device; a reaction device, a material discharge end of the raw material preparation device being connected to the reaction device; and an extraction device configured to extract and purify crude composite material obtained from the reaction device, a material feed end of the extraction device being connected to the material discharge end of the reaction device, and a material discharge end of the extraction device being configured to convey polyamide monomer extract obtained by extraction to a liquid conveying pipe of the raw material preparation device. The raw material preparation device includes a raw material melting kettle configured to melt polyamide monomer and mix the molten polyamide monomer with graphene, and the raw material melting kettle is provided with a high-shear emulsifying machine and an ultrasonic disperser.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 30, 2019
    Assignee: CHANGZHOU HIGHBERY NEW NANO MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Yan Jiang, Rongqing Huang, Zhenyang Luo, Yan Liang, Hongming Ma, Jianpeng Cao, Lu Zhou, Xuejing Liu, Shulie Dai
  • Patent number: 10113054
    Abstract: The present invention provides a molded article comprising a polyamide resin composition, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 ?m from the surface of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region except for the region within a depth of 3 ?m from the surface of the molded article)>2.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: October 30, 2018
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Tomoyo Kawamura, Masashi Okamoto, Yasukazu Shikano, Katsushi Watanabe
  • Patent number: 9587072
    Abstract: To provide a method for producing a polymer, which contains: bringing a ring-opening polymerizable monomer containing an amide bond, and a compressive fluid into contact with each other to melt or dissolve the ring-opening polymerizable monomer containing an amide bond, followed by allowing the ring-opening polymerizable monomer containing an amide bond to react through ring-opening polymerization in the presence of a basic organic metal catalyst and a cocatalyst, to thereby obtain a polymer product.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: March 7, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Taichi Nemoto, Chiaki Tanaka, Yoko Arai, Satoshi Izumi, Yasuo Kamada
  • Patent number: 9550711
    Abstract: Disclosed in the present invention are a fluorine-containing polymerizable compound of the general formula (1) and a polymer compound obtained therefrom: where A represents a single bond, an oxygen atom, a sulfur atom, SO2, CH2, CO, C(CH3)2, C(CH3)(CH2CH3), C(CF3)2, C(CH3)(C6H5), CH2—C6H4—CH2 or a divalent organic group obtained by elimination of two hydrogen atoms from benzene, biphenyl, naphthalene, cyclohexene or fluorene; and a and b each independently represent an integer of 0 to 2 and satisfy a relationship of 1?a+b?4. The thus-obtained polymer compound combines adequate hydrophilicity and high transparency with low water adsorption of fluorine-containing compound.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: January 24, 2017
    Assignee: Central Glass Company, Limited
    Inventors: Junya Nakatsuji, Makoto Matsuura, Kazuhiro Yamanaka
  • Patent number: 9428611
    Abstract: The present invention relates to novel catalysts for the production of cast polyamide, to processes for production thereof and to the use thereof.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: August 30, 2016
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Wilhelm Laufer, Serdar Uestuenbas
  • Patent number: 9353262
    Abstract: The disclosure of the present application provides compositions and methods of compounding polyamides comprising the steps of forming a polyamide mixture, comprising a polyamide with an olefin maleic anhydride copolymer, and compounding the polyamide mixture at its processing temperature. Compounded polyamides derived from recycled nylon and other recycled polyamides and methods for preparing the compounded polyamides are described.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: May 31, 2016
    Assignee: Vertellus Specialties Inc.
    Inventors: Brian Tarbit, Ashok M. Adur
  • Patent number: 9139752
    Abstract: The present invention relates to a process for producing polyamides, preferably crosslinked polyamides, via anionic polymerization of lactams in the presence of an anionic catalyst and of a caprolactam-capped polyisocyanate, where said isocyanate comprises more than 3.5 capped isocyanate groups.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 22, 2015
    Assignee: BASF SE
    Inventors: Philippe Desbois, Bernd Bruchmann, Dietrich Scherzer, Andreas Wollny, Andreas Radtke
  • Publication number: 20150087777
    Abstract: A multi-stage process and system for formation of a polyarylene sulfide is described. A first polymerization stage of the formation process can include reaction of a sulfide monomer with a dihaloaromatic monomer to form a prepolymer. A second polymerization stage can include further polymerization of the prepolymer with a sulfur-containing monomer and a dihaloaromatic monomer to form a low halogen content polyarylene sulfide. The amount of sulfur utilized in the second polymerization stage is a low fraction of the total amount of sulfur utilized in the multi-stage process.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 26, 2015
    Inventor: Hendrich Alvarez Chiong
  • 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: 8759475
    Abstract: Polyamides, e.g., polyhexamethylene adipamide, are continuously produced via the following stages: Stage 1: into and through a reactor, polycondensing a liquid stream which contain the polyamide monomer(s) at a pressure P1 greater than atmospheric pressure, the stream of material at the outlet of the reactor including a vapor phase which contains steam and a liquid phase which at least contains the product of polycondensation; Stage 2: feeding the outlet stream of material into a chamber, evacuating at least a portion of the vapor phase therefrom and recovering at least the liquid phase which at least contains the product of polycondensation, the pressure P2 in the chamber being regulated at a set value such that it is greater than atmospheric pressure and the residence time of said liquid phase in the chamber being less than 5 minutes; and Stage 3: pressure reducing at least the liquid phase which at least contains the stream of polycondensation product recovered during Stage 2.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: June 24, 2014
    Assignee: Rhodia Operations
    Inventors: Jean-Francois Thierry, Sébastien Lomel, Vincent Mollet, Matthieu Helft, Cédric Fillon
  • Patent number: 8753426
    Abstract: The invention describes a polymeric material comprising repeating units of Formulae I-III and methods of preparation. Novel polymeric materials, gas separation membranes and fluid component separation methods are also described.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: June 17, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shiying Zheng, Jeffrey Raymond Quay
  • Publication number: 20140142274
    Abstract: The present invention relates to solid particles which comprise at least one lactam, and also at least one activator, and at least one catalyst, to a process for the production of these, and also to the use of these for the production of polyamide, and to a process for the production of polyamide.
    Type: Application
    Filed: July 2, 2012
    Publication date: May 22, 2014
    Applicant: BASF SE
    Inventors: Philippe Desbois, Silke Biedasek, Andreas Wollny
  • Patent number: 8703879
    Abstract: A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: April 22, 2014
    Assignee: BASF SE
    Inventors: Wolfgang Loth, Faissal-Ali El-Toufaili, Achim Stammer, Gad Kory, Achim Gerstlauer, Jens Becker
  • Publication number: 20140033918
    Abstract: The invention describes a polymeric material comprising repeating units of Formulae I-III and methods of preparation. Novel polymeric materials, gas separation membranes and fluid component separation methods are also described.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 6, 2014
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Shiying Zheng, Jeffrey Raymond Quay
  • Patent number: 8642716
    Abstract: The present invention relates to branched polyamides comprising unsaturated ends comprising: at least one unit originating from a multifunctional monomer (A) having more than two functional groups, at least sequences resulting from the condensation, in the presence of at least one unsaturated monoacid, either of at least two different lactams, or of at least one lactam, at least one dicarboxylic acid and at least one diamine, or of a lactam or of an ?,?-aminocarboxylic acid, or of a diamine and of a diacid. The invention also relates to thermofusible adhesives comprising these branched polyamides comprising unsaturated ends, and to the use of these branched polyamides comprising unsaturated ends in sheathing electrical cables.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: February 4, 2014
    Assignee: Arkema France
    Inventors: Annett Linemann, Thierry Briffaud
  • Patent number: 8541540
    Abstract: A continuous process is disclosed for the extraction of monomeric caprolactam and its oligomers as the raw polymer product obtained in the polymerization of polyamide-6 in which no fresh water, but processing water or previously used extraction water is used for the granulation.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: September 24, 2013
    Assignee: Lurgi Zimmer GmbH
    Inventors: Klaus Kirsten, Manfred Albrecht, Franz Samlitschka
  • Publication number: 20130172517
    Abstract: The present invention generally relates to the large-scale (e.g., greater than 1 kg scale) preparation of low molecular weight polylysine or polyornithine in high yield by preparing a polylysine or polyornithine having a weight average molecular weight from about 12,500 Daltons to about 22,000 Daltons and hydrolyzing it to produce a polylysine or polyornithine having a weight average molecular weight from about 5,500 Daltons to about 12,000 Daltons.
    Type: Application
    Filed: February 5, 2013
    Publication date: July 4, 2013
    Applicant: Sigma-Aldrich Co. LLC
    Inventor: Ettigounder Ponnusamy
  • Publication number: 20130065466
    Abstract: The present invention relates to a process for preparing a composition comprising (A) at least one lactam, (B) at least one catalyst, (C) an activator from the group consisting of isocyanates, acid anhydrides, acyl halides, reaction products thereof with (A) and mixtures thereof, (D) at least one polyethyleneimine. The invention likewise relates to a composition comprising (i) 0.01 to 10 wt %, based on the sum total of components (A) and (D), of at least one polyethyleneimine, and (ii) 90 to 99.99 wt %, based on the sum total of components (A) and (D), of at least one lactam (A) and/or polyamide obtainable from (A).
    Type: Application
    Filed: September 12, 2012
    Publication date: March 14, 2013
    Applicant: BASF SE
    Inventors: Philippe Desbois, Andreas Wollny, Andreas Radtke, Bernd Bruchmann, Anna Karina Möller
  • Patent number: 8378049
    Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: February 19, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
  • Publication number: 20120245320
    Abstract: The present invention relates to a new method of production of cast polyamides.
    Type: Application
    Filed: October 27, 2011
    Publication date: September 27, 2012
    Applicant: RHEIN CHEMIE RHEINAU GMBH
    Inventors: Wilhelm Laufer, Armin Eckert
  • Patent number: 8263733
    Abstract: Helical tube evaporators are used to concentrate aqueous extract solutions from the extraction of polyamides based on polyamide 6. A process for preparing polyamides based on polyamide 6 comprises the stages of b) monophasic or biphasic reaction of aqueous extract solutions from the extraction of polyamides based on polyamide 6, which may be enriched with caprolactam, aminocapronitrile, aminocaproic acid or mixtures thereof, in a prereactor at pressures in the range from 5 to 40 bar and temperatures in the range from 150 to 300° C., the gaseous phase formed being removable from the liquid phase in the case of the biphasic reaction, c) discharge of the reaction mixture from stage b) through a helical tube evaporator at a temperature in the range from 220 to 300° C. with pressure reduction to about atmospheric pressure and removal of a gaseous phase to obtain a liquid phase, d) further reaction of the liquid phase from stage c) at temperatures in the range from 240 to 300° C.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: September 11, 2012
    Assignee: BASF SE
    Inventors: Robert Weiss, Jens Becker
  • Publication number: 20120141791
    Abstract: The present invention relates to a novel process for the anionic polymerization of lactam monomers.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 7, 2012
    Applicant: BASF SE
    Inventors: Silke Biedasek, Philippe Desbois, Mohammed Abboud, Andreas Wollny
  • Patent number: 8124686
    Abstract: The present invention relates to a process for the preparation of polyamide-12 powder by anionic polymerization of lauryllactam in solution in a solvent of the lactam, the polyamide-12 powder being insoluble in this solvent, the polymerization being carried out: in the presence of a catalyst and of an activator; in the presence of a finely divided organic or inorganic filler, the proportion of this filler being less than or equal to 1.5 g per 1000 g of lauryllactam; and in the presence of an amide of formula R1—NH—CO—R2 in which R1 can be replaced by an R3—CO—NH— or R3—O— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, the proportion of this compound being between 0.001 mol and 0.030 mol per 1000 g of lauryllactam.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: February 28, 2012
    Assignee: Arkema France
    Inventors: Karine Loyen, Holger Senff, Francois-Xavier Pauly
  • Patent number: 8104148
    Abstract: The invention provides a kind of prepolymer with 4-(N-maleimide phenyl)Ether (MPGE) epoxy resin and 4,4?-diphenylmethane bismaleimide (BMI) as reactants, with free radical initiator leading to reaction in solvents, and adding inhibitor after reaction, with the mole ratio of 0.05-0.5 for BMI and MPGE; the initiator usage is 0.01%-0.15% of mole total for reactant monomers; the solvent usage is 50%-70% of the total weight of the reactants; the inhibitor usage is half to double of mole amount of the initiator used. This kind of prepolymer can be used to produce high-performance thermosetting resin composition corresponding to the packaging requirements for electronic components and Integrated Circuits (IC).
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: January 31, 2012
    Assignees: Iteq (Dongguan) Corporation, Iteq Corporation
    Inventors: Yufang He, Lijun Su
  • Patent number: 8080630
    Abstract: The invention relates to a process for preparing a melt-processable polylactam by contacting caprolactam monomer with an anionic polymerization catalyst, polymerizing said monomer and contacting the resulting polylactam with a protic compound. The anionic polymerization catalyst is chosen from the group consisting of alkali-earth-metal-lactamates and alkali-earth-metal-lactamate forming compounds and the protic compound has a pKa larger than 14. The resulting polylactam has a good melt-stability and very low cyclic dimer content.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: December 20, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Albert A Van Geenen, Cornelia E. M. Bronsaer, Yvonne H Frentzen, Stanislaus M. P. Mutsers, Nicolaas J. M. L. Janssen
  • 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: 8048967
    Abstract: A method for preparing nylon microspheres is provided, said method comprising steps (1), (2) and (3) or steps (1?), (2) and (3) as follows: (1) a radically polymerizable monomer is dispersed in a molten lactam monomer, and a free radical initiator is added, so that radical polymerization of the radically polymerizable monomer is carried out, to give a mixture of a free radical polymer and the lactam monomer; or (1?) a mixture of a free radical polymer and a molten lactam monomer is provided; and (2) an initiator and an activator, used for anionic ring-opening polymerization of the lactam monomer, are added to the mixture obtained in step (1) wherein the remaining radically polymerizable monomer and water are removed, or to the mixture obtained in step (1?), so that the anionic ring-opening polymerization of the lactam is carried out to give a polymer alloy of the free radical polymer/polyamide; and (3) the free radical polymer in the polymer alloy obtained in step (2) is removed by dissolution, giving nylon m
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 1, 2011
    Assignee: Shanghai Genius Advanced Material (Group) Company, Ltd.
    Inventors: Aihua Pei, Tingxiu Xie, Guisheng Yang
  • Patent number: 7977449
    Abstract: The present invention relates to reinforced articles based on a polyamide matrix of high melt flow index and on long fibers. The articles according to the invention exhibit good mechanical properties, such as good tensile strength, good surface finish and good moldability.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: July 12, 2011
    Assignee: Rhodia Engineering Plastics S.r.l.
    Inventor: Gerard Bradley
  • Patent number: 7935779
    Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: May 3, 2011
    Assignee: Great Eastern Resins Industrial Co., Ltd.
    Inventors: Shenghong A. Dai, Jiang-Jen Lin, Kuan-Liang Wei
  • Publication number: 20100222539
    Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.
    Type: Application
    Filed: May 6, 2010
    Publication date: September 2, 2010
    Applicant: BASF SE
    Inventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
  • Patent number: 7740938
    Abstract: Spherical polyamide particles having a mean particle size of less than 1 mm, notably less than 100 ?m, are produced by dispersing the polyamide monomers in an inert liquid and then polymerizing same.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: June 22, 2010
    Assignee: Rhodia Polyamide Intermediates
    Inventors: Matthieu Helft, Eric Roche
  • Publication number: 20100129674
    Abstract: A copolymer is disclosed, having aminobenzoic or substituted aminobenzoic and comonomer repeating units. Methods of preparing the copolymer by polymerizing a reaction mixture comprising aminobenzoic acid in the presence of at least one strong acid and optionally at least one initiator are disclosed. Compositions and films comprising at least one such copolymer, composites comprising a film as described above overlaid by another coating, methods of coating a metal surface with such a composition or film, and methods of protecting a metallic surface comprising applying to the surface a film comprising an electroconductive copolymer as described above are also disclosed.
    Type: Application
    Filed: December 23, 2008
    Publication date: May 27, 2010
    Applicant: CHEMETALL CORP.
    Inventors: Chang Wei, Yanrong Zhu, Shengxian Wang
  • Patent number: 7696272
    Abstract: Very low loading of impact modifier less than 4% can significantly improve elongation and impact strength of N6/clay nanocomposites and keep the high tensile strength and modulus. This rubber modified nylon nanocomposites have potential applications in fabricating high-strength fibers for textile industry, coatings for strings or polymer parts, and packaging industry.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: April 13, 2010
    Assignee: Applied Nanotech Holdings, Inc.
    Inventors: Yunjun Li, Dongsheng Mao, Zvi Yaniv
  • Publication number: 20090123753
    Abstract: A method for preparing nylon microspheres is provided, said method comprising steps (1), (2) and (3) or steps (1?), (2) and (3) as follows: (1) a radically polymerizable monomer is dispersed in a molten lactam monomer, and a free radical initiator is added, so that radical polymerization of the radically polymerizable monomer is carried out, to give a mixture of a free radical polymer and the lactam monomer; or (1?) a mixture of a free radical polymer and a molten lactam monomer is provided; and (2) an initiator and an activator, used for anionic ring-opening polymerization of the lactam monomer, are added to the mixture obtained in step (1) wherein the remaining radically polymerizable monomer and water are removed, or to the mixture obtained in step (1?), so that the anionic ring-opening polymerization of the lactam is carried out to give a polymer alloy of the free radical polymer/polyamide; and (3) the free radical polymer in the polymer alloy obtained in step (2) is removed by dissolution, giving nylon m
    Type: Application
    Filed: November 12, 2008
    Publication date: May 14, 2009
    Inventors: Aihua PEI, Tingxiu Xie, Guisheng Yang
  • Patent number: 7470765
    Abstract: A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and comprises water, in the presence of titanium dioxide as catalyst, which comprises using titanium dioxide whose BET surface area, determined to the German standard DIN 66 131 volumetrically by the multipoint method, is in the range from 5 to 35 m2/g.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: December 30, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Winterling, Christoph Benisch, Thilo Hahn
  • 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
  • Publication number: 20080167418
    Abstract: A process for preparing an aqueous polyamide dispersion by hydrolase-catalyzed reaction of an aminocarboxylic acid compound in aqueous medium.
    Type: Application
    Filed: November 29, 2005
    Publication date: July 10, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Xiang-Ming Kong, Motonori Yamamoto, Dietmar Haring
  • Patent number: 7393913
    Abstract: Polyamide whose main chain contains a chemically bound N-alkyllactam, and processes for preparing such a polyamide and fibers, films and moldings comprising such a polyamide.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: July 1, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Winterling, Jürgen Demeter, Jürgen Deininger, Gad Kory, Oliver Sötje, Ralf Neuhaus, Kurt Krempel, Christoph Benisch
  • Patent number: 7294672
    Abstract: A method to form a polymeric material is disclosed. The method provides a water immiscible solvent and one or more condensation monomers, where those one or more condensation monomers are essentially insoluble in the water immiscible solvent. The one or more condensation monomers may be either a solid or a liquid at room temperature. The method forms a reaction mixture comprising a suspension of one or more solid condensation monomers, or an emulsion of one or more liquid condensation monomers, in the water immiscible solvent. The method includes heating the reaction mixture to form the polymeric material product. That polymeric material is then separated from said reaction mixture.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: November 13, 2007
    Assignee: Polymer Chemistry Innovations, Inc.
    Inventors: Bernard Gordon, III, Jim DiBattista
  • Patent number: 7138482
    Abstract: In the production method of polyamide of the present invention, the mole balance at a set point during melt polymerization is estimated from a pre-established equation for calculating the mole balance during melt polymerization from a melt viscosity. On the basis of the estimated mole balance, the subsequent conditions of melt polymerization of a batch and the polymerization conditions of the next and subsequent batches are determined. In addition, the mole balance, molecular weight and relative viscosity of melt-polymerized polyamide are estimated from pre-established equations each for respectively calculating the mole balance, molecular weight and relative viscosity at the end point of melt polymerization from the melt viscosity. The conditions for solid phase-polymerizing the melt-polymerized polyamide are determined on the basis of estimated values.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: November 21, 2006
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kazumi Tanaka, Hideyuki Kurose, Takatoshi Shida, Minoru Kikuchi
  • 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: 7053172
    Abstract: The fuel-barrier polyamide resin of the present invention is a product of the polycondensation of a diamine component comprising 70 mol % or higher of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or higher of a mixed dicarboxylic acid which comprises a C4 to C20 ?,?-linear aliphatic dicarboxylic acid and at least one dicarboxylic acid selected from the group consisting of isophthalic acid and naphthalenedicarboxylic acid in a molar ratio of 30:70 to 95:5. The polyamide resin is excellent in not only fuel-barrier property and heat resistance, but also moldability and recyclability, and therefore suitably used as a barrier material of fuel containers.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: May 30, 2006
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Kazunobu Sato, Kazunobu Maruo, Jun Mitadera, Masashi Kurokawa
  • 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: 7009030
    Abstract: A wax containing the reaction product of: (a) a C6–C12 linear dicarboxylic acid; and (b) a diamine of formula H2N(CH2)nNH2, wherein n is an integer from 2 to 6, and the molar ratio of the C6–C12 linear dicarboxylic acid to the diamine is from 0.97 to 1.06.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: March 7, 2006
    Assignee: Rohm and Haas Company
    Inventors: Gene Kelly Norris, Rajiv Manohar Banavali
  • Patent number: 6995233
    Abstract: The invention relates to a continuous process for manufacturing polyamides. The polyamides are of the type obtained from diacids and diamines. The process comprises an operation of continuous mixing of a compound which is rich in amine end groups and a compound which is rich in acid end groups and a polycondensation operation using the mixture. The invention relates to the starting phase of such a process, during which an aqueous solution comprising a mixture of monomers in substantially stoichiometric proportions is used.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: February 7, 2006
    Assignee: Rhodianyl
    Inventors: Jean-Francois Thierry, Matthieu Helft
  • Patent number: 6965001
    Abstract: According to the present invention, organic-inorganic hybrid polymer materials with compositional gradient, and processes for preparing the same are provided. In the organic-inorganic hybrid polymer materials with compositional gradient, formation of cracks, removal of surface, or deformation such as warp and distortion, under heat shock or upon aging, hardly occurs. The organic-inorganic hybrid polymer materials with compositional gradient are comprised of an organic polymer component and a metal oxide component which are covalently bonded each other, characterized in that concentration of the organic polymer component, or of the metal oxide component is increased or decreased in the direction of thickness of the material.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: November 15, 2005
    Assignees: Orient Chemical Industries, Ltd., Osaka Municipal Government
    Inventors: Motoomi Arakawa, Kazuaki Sukata, Yasuyuki Agari, Masayuki Shimada
  • Patent number: 6958381
    Abstract: A process for preparing polyamides comprises polymerizing starting monomers in the presence of from 2.3 to 10 mmol, based on 1 mol of carboxamide group of the polyamide, of a chain regulator containing a nitrile group and a functional group capable of forming a carboxamide group.
    Type: Grant
    Filed: November 22, 2001
    Date of Patent: October 25, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Winterling, Michael Fischer
  • Patent number: 6916901
    Abstract: The present invention provides a method for the production of polyamide 6 by the hydrolytic polymerization of ?-caprolactam, in which, in the first step, caprolactam ring opening occurs under the action of water and, in the following steps, polycondensation is performed at low temperatures under anhydrous conditions.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: July 12, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Sven Gestermann, Ralph Ulrich
  • Patent number: 6906165
    Abstract: The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using a multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal group concentrations are balanced. The copolyamides are particularly high viscosity copolyamides. The invention also concerns compositions based on said copolyamides.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: June 14, 2005
    Assignee: Rhodia Engineering Palstics S.R.L.
    Inventors: Giuseppe Di Silvestro, Franco Speroni, Cuiming Yuan, Haichun Zhang