Material Is A Nitrogen-containing Compound Other Than A Lactam Patents (Class 528/315)
  • Patent number: 9738755
    Abstract: The present invention relates to novel cast polyamides, to processes for production thereof and to the use thereof.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 22, 2017
    Assignee: LANXESS Deutschland GmbH
    Inventors: Wilhelm Laufer, Armin Eckert, Andre Palzer
  • Patent number: 9388270
    Abstract: The present invention provides sizing compositions and methods of using the same for glass fibers used in reinforced polymeric composites produced by reactive processing techniques.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: July 12, 2016
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Jacobus Hendricus Antonius Van Der Woude, Jacob Cornelis Dijt, Hendrik Beerda, Johannes Leonardus Tabak, John Theo Penning
  • Patent number: 9387626
    Abstract: This invention relates to a process of making a fiber-reinforced composite. Glass fibers may be provided. These glass fibers may be treated with a sizing composition that has a coupling-activator compound with the formula: S—X-(A)n, where S represents a silicon-containing coupling moiety capable of bonding to the surface of glass fibers, X represents a linking moiety, and (A)n represents one or more polymerization activator moieties. The treated glass fibers may be combined with a resin to make a fiber-resin mixture. The resin may have a monomer, a catalyst, and an activator compound capable of initiating a polymerization of the monomer. The monomer may be a lactam or lactone having 3-12 carbon atoms in the main ring. The fiber-resin mixture may then be cured so that the monomer polymerizes to form a thermoplastic polymer matrix of the fiber-reinforced composite. The thermoplastic polymer matrix may be formed by in situ polymerization initiated from both the surface of the glass fibers and the resin.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: July 12, 2016
    Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar
  • Patent number: 9290621
    Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: March 22, 2016
    Assignee: BruggemannChemical L. Bruggemann KG
    Inventors: Jan Klitschke, Klaus Bergmann
  • Publication number: 20150051368
    Abstract: The present invention relates to novel compositions for production of cast polyamides.
    Type: Application
    Filed: August 31, 2012
    Publication date: February 19, 2015
    Applicants: LANXESS DEUTSCHLAND GMBH, RHEIN CHEMIE RHEINAU GMBH
    Inventors: Andreas Kugler, Armin Eckert, Wilhelm Laufer, Michael Witt, Detlev Joachimi, Gunter Margraf, Thomas Fruh
  • Publication number: 20150045531
    Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Jan Klitschke, Klaus Bergmann
  • Patent number: 8927685
    Abstract: A renewable chemical feedstock derived from the essential oils from herbs and other plants. In embodiments, trans-anethole are transformed into thermoset and thermoplastic compositions.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 6, 2015
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventor: Matthew C. Davis
  • 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
  • Publication number: 20140336350
    Abstract: The present invention relates to novel compositions, to the preparation thereof and to the use thereof for the production of cast polyamides.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 13, 2014
    Applicant: Rhein Chemie Rheinau GmbH
    Inventors: Wilhelm LAUFER, Andre PALZER, Volker WENZEL
  • Publication number: 20140155571
    Abstract: Methods of preparing a polyaniline homopolymer or copolymer comprising at least one carboxylic acid group, and homopolymers or copolymers arising therefrom, the methods comprising: preparing a solution of a polyaniline precursor having at least one aromatic amine group and at least one carboxylic acid group (eg. 2-aminobenzoic acid, 3-aminobenzoic acid or 4-aminobenzoic acid) in a solvent selected from aqueous methanesulfonic acid or aqueous ammonia and optionally one or more additional polyaniline precursors (such as aniline); and oxidatively polymerising the polyaniline precursor or precursors.
    Type: Application
    Filed: March 27, 2012
    Publication date: June 5, 2014
    Applicant: AUCKLAND UNISERVICES LIMITED
    Inventor: Ralph Cooney
  • Publication number: 20140148570
    Abstract: The present invention relates to novel compositions for producing cast polyamides.
    Type: Application
    Filed: May 23, 2012
    Publication date: May 29, 2014
    Applicant: RHEIN CHEMIE RHEINAU GMBH
    Inventors: Wilhelm Laufer, Benjamin Bechem, Andre Palzer
  • 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
  • Publication number: 20130261282
    Abstract: The present invention relates to a process for producing polyamide moldings by subjecting a lactam-containing polymerizable composition to a rotomolding process.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 3, 2013
    Applicant: BASF SE
    Inventors: Silke Biedasek, Philippe Desbois
  • Patent number: 8546516
    Abstract: A thermoplastic polymer composition comprises a combination of: 40 to 60 pbw, of a polyetherimides, polyetherimide sulfones, or combination thereof having a weight average molecular weight from 5,000 to 80,000 Daltons; 40 to 60 pbw of a polyethylene terephthalate, the polyethylene terephthalate having a diethylene glycol content from 0.1 to 4 wt %, based on the weight of the polyethylene terephthalate, an intrinsic viscosity that is more than 0 and less than 0.83 dl/g, and carboxylic acid end groups in an amount from 10 to 150 meq/Kg; from 0 pbw to 1 pbw, based on 100 pbw of the polymer composition of a stabilizer selected from phenol-containing stabilizers, phosphorus-containing stabilizers, or a combination thereof; and, based on the weight of the polyethylene terephthalate, 10 to 300 antimony; 0 to 300 ppm of cobalt; and 0 to 300 ppm of titanium; wherein the polymer composition is bisphenol A free.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: October 1, 2013
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Robert R. Gallucci, Mark A. Sanner
  • 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
  • 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
  • Publication number: 20130079465
    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: Application
    Filed: September 28, 2012
    Publication date: March 28, 2013
    Inventors: Philippe DESBOIS, Bernd Bruchmann, Dietrich Scherzer, Andreas Wollny, Andreas Radtke
  • 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: 20120283406
    Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: BrüggemannChemical L. Brüggemann KG
    Inventors: Jan Klitschke, Klaus Bergmann
  • 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
  • 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
  • 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
  • Publication number: 20120077952
    Abstract: A process for the synthesis of copolymer-1 composed of L-alanine, LHysine, L-glutamic acid and L-tyrosine for the treatment of multiple sclerosis. The molecular weight of copolymer-1 is between 8-19 KDa. Process is initiated by supported dialkyl amine. The copolymer-1 of the invention has acid content of less than 1%.
    Type: Application
    Filed: June 4, 2009
    Publication date: March 29, 2012
    Inventor: Baijayantimala Garnaik
  • 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: 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
  • 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
  • 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: 7659360
    Abstract: A polyimide resin is produced by the reaction of a compound selected from 1,2,4,5-cyclohexanetetracarboxylic acid, dianhydride thereof and reactive derivatives thereof and a compound selected from diamines and diisocyanates each containing at least one phenylene group and at least one isopropylidene group. The polyimide resin is colorless and exhibits a high heat resistance, a high transparency and a low water absorption.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: February 9, 2010
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Makinoshima, Shuta Kihara
  • 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: 20090269597
    Abstract: A polyimide resin which is soluble in an organic solvent and which has a low coefficient of water absorption, thermosetting properties, high heat resistance and excellent adhesive properties, a method for manufacturing the same, an adhesive and a film each containing the subject polyimide resin and a metal-clad laminate including an adhesive layer composed of the subject polyimide resin are provided. The polyimide resin is a polyimide resin containing a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2), with a proportion of a group presented by the following formula (3) being 50% by mole or more of the whole of X.
    Type: Application
    Filed: July 17, 2007
    Publication date: October 29, 2009
    Inventors: Tsuyoshi Bito, Shuta Kihara, Jitsuo Oishi
  • 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
  • Publication number: 20090048416
    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: November 15, 2006
    Publication date: February 19, 2009
    Applicant: BASF SE
    Inventors: Bernd Bruchmann, Harm-Anton Klok, Markus Thomas Scholl
  • Patent number: 7479526
    Abstract: The invention relates to hydroxyl-functional binder components ABC containing a linear or branched main chain having a polymethylene structure —(CH2)n— or a polyester structure or a structure derived from the fatty acid esters of glycerin or other polyvalent alcohols. The invention is characterized in that said components have grafted cyclic imide structures on the main chain, wherein the imide-nitrogen atom is substituted by a hydroxyalkyl group or a hydroxyalkyl-aryl group. The invention also relates to method for the production of said components by reacting oleofinically unsaturated acid anhydrides B and hydroxyamines C and to the utilization of the inventive components for the formulation of binders.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: January 20, 2009
    Assignee: Cytec Surface Specialties Austria GmbH
    Inventors: Gerhard Reidlinger, Johann Billiani, Ewald Zrin, Johannes Scherz
  • Patent number: 7091303
    Abstract: The invention relates to a method to produce a modified hyperbranched polyesteramide, containing at least two ?-hydroxylamide ester groups and optionally also a hydroxyalkylamide endgroup, wherein (a) a hydroxy-, or aminefunctional monomer, oligomer or polymer is contacted with a first molar excess of a cyclic carboxylic acid anhydride, forming a mixture of an acid functional ester, respectively an acid functional amide and a cyclic carboxylic acid anhydride; (b) the mixture is contacted with an amount of alkanediolamine, wherein the amount is a second molar excess with respect to the first molar excess. The invention further relates to a modified hyperbranched polyesteramide containing at least two ?-hydroxylamide ester groups and optionally also a hydroxyalkylamide endgroup with a degree of polymerisation of more than 19, as well as the use of these polyesteramides as rheology modifier in gas-oil or in diesel.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 15, 2006
    Assignee: DSM IP Assets B.V.
    Inventor: Dirk Muscat
  • 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: 6903181
    Abstract: Disclosed are methods of synthesis of polysuccinimide, copolymers and derivatives thereof: also disclosed are methods of forming derivatives by ring-opening initiation reactions.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: June 7, 2005
    Assignee: Folia, Inc
    Inventors: Graham Swift, George H. Redlich
  • Patent number: 6887971
    Abstract: Disclosed are methods of synthesis of polysuccinimide and a copoly(succinimide-aspartate) using a supercritical fluid.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: May 3, 2005
    Assignee: Folia, Inc.
    Inventors: Graham Swift, Kenneth Michael Doll, Randal Lee Shogren, Ronald Alan Holser, Julious L. Willett
  • Patent number: 6881819
    Abstract: The invention relates to a liquid initiator for carrying out anionic lactam polymerization. The liquid initiator contains a conversion product of isocyanate (1) with a protic compound (P) and a base (B) in an aprotic solvation agent (S).
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 19, 2005
    Assignee: EMS-Chemie AG
    Inventors: Eduard Schmid, Ivano Laudonia
  • Patent number: 6846901
    Abstract: The invention relates to a liquid initiator to be used in anionic lactam polymerization. Said liquid initiator contains a reaction product of carbodiimide with a protic compound and a base in an aprotic solvation agent.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: January 25, 2005
    Assignee: EMS-Chemie AG
    Inventors: Eduard Schmid, Ivano Laudonia
  • Publication number: 20040249114
    Abstract: Disclosed are methods of synthesis of homopolymers or copolymers containing succinimide or aspartate moieties formed in the presence of an end capping initiator. Also disclosed are methods of isolating, compounding, stabilizing and processing the homopolymers and copolymers.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 9, 2004
    Inventors: Graham Swift, George H. Redlich, John Nolan Wehby
  • Patent number: 6809173
    Abstract: The invention relates to a polyamide with low viscosity degradation after remelting which can be produced by anionic polymerization of lactam in the presence of alkaline catalysts and if necessary activators and the method for production of the polyamide. The invention relates furthermore to a method for reprocessing anionically produced polyamide.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: October 26, 2004
    Assignee: EMS-Chemie AG
    Inventors: Eduard Schmid, Ivano Laudonia, Hansjörg Ernst, Werner Kägi
  • Publication number: 20040092704
    Abstract: Disclosed are methods of synthesis of polysuccinimide, copolymers, derivatives and blends with additives thereof, using a supercritical fluid. Also disclosed are methods of isolating, compounding, stabilizing and processing the polysucciminide, its copolymers and derivatives.
    Type: Application
    Filed: November 3, 2003
    Publication date: May 13, 2004
    Inventor: Graham Swift
  • Patent number: 6663962
    Abstract: For the preparation of powders formed of copolyesteramides by anionic polymerization, at least one lactam and at least one lactone are copolymerized in solution in a solvent in the presence of a catalyst and of an activator, the solvent being a solvent of the lactam and the powders being insoluble in the solvent. Preferably at least two lactams and at least one lactone are copolymerized, and the copolymerization is preferably carried out in the presence of a finely divided organic or inorganic filler. The copolymerization is preferably carried out in the presence of an N,N′-alkylenebisamide, such as ethylenebisstearamide (EBS) disclosed in EP 192 515, or generally amides 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.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: December 16, 2003
    Assignee: Atofina
    Inventors: Christophe Le Crom, Roland Guerin
  • Patent number: 6653399
    Abstract: A water absorbent material, comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed and crosslinked, has high water absorbency and high biodegradability even if the anhydropolyamino acid has a low molecular weight.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: November 25, 2003
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hisakazu Tanaka, Shigeki Ideguchi, Yoshiki Hasegawa
  • Patent number: 6579965
    Abstract: For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH—CO-R2, in which R1 can be substituted by an R3-CO—NH— or R3-0— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, are dissolved in the molten lactam, (a1) the solution from stage (a) is cooled, optionally to the solid state in a form which can be divided, (a2) the product from stage (a1) is optionally reheated to a temperature below the polymerization temperature of the lactam, (a3) optionally, the product from stage (a1) is reheated and is maintained at a temperature between the melting temperature of the lactam and 15° C. above, and (b) the produce from any one of stages (a1), (a2) or (a3) is introduced into a mixing device or mold and is then heated to a temperature sufficient to obtain the bulk polymerization of the lactam.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: June 17, 2003
    Assignee: Atofina
    Inventors: Nicola Hoogen, Andreas Wollny, Heike Faulhammer, Rolf Muelhaupt
  • Patent number: 6569988
    Abstract: In a process for producing polyamides, a mixture comprising hexamethylenediamine and aminocapronitrile and obtained from the hydrogenation of adiponitrile is reacted with water and a dicarboxylic acid.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: May 27, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Mohrschladt, Volker Hildebrandt, Dieter Krauss, Martin Leemann
  • Patent number: 6548626
    Abstract: A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: April 15, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Mohrschladt, Volker Hildebrandt, Alfons Ludwig
  • Patent number: 6541599
    Abstract: A process for the manufacture of soluble hyperbranched polyamides is disclosed comprising the steps of combining multifunctional monomer reactants comprising amine and carboxylic acid functional groups in a reactor with water, and reacting amine and carboxylic acid functional groups of the multi-functional monomers at elevated temperature and pressure for a period of time sufficient to form a highly branched polyamide. The present invention advantageously provides a simple, practical, and environmentally friendly process for the manufacture of soluble hyperbranched polyamides comprising multifunctional in-chain and/or end groups. The present invention also provides a process for the manufacture of soluble hyperbranched polyamides from monomers with a broad range of the ratio of functional amine groups to acid groups.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 1, 2003
    Assignee: Eastman Kodak Company
    Inventor: Jin-Shan Wang
  • Patent number: 6541600
    Abstract: Highly branched polyamides prepared in a single step procedure of condensation polymerization of multifunctional monomer reactants comprising amine and carboxylic acid functional groups. Polymerization proceeds by reaction of an amine group of a first monomer unit with an acid group of a second monomer unit to form a reaction product having an amide linkage between the first and second monomer units and repetition of such amidation reaction between additional amine groups and acid groups of the multi-functional monomers and reaction products of the multi-functional monomers. In the present invention, in order to obtain a water soluble or dispersible hyperbranched polyamide, at least one of the multifunctional monomer unit reactants contains an amine, phosphine, arsenine or sulfide group, such that the highly branched polyamide contains in the backbone thereof an N, P, As or S atom capable of forming an onium ion.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 1, 2003
    Assignee: Eastman Kodak Company
    Inventors: Jin-Shan Wang, Huijuan D. Chen