Patents Assigned to NEXAM CHEMICAL AB
  • Process for producing (ethyne-1,2-diyl(bis(isobenzofuran-1,3-dione)
    Patent number: 9018401
    Abstract: A process for obtaining (ethyne-1,2-diyl)bis(isobenzofuran-1,3-dione) is disclosed. In the disclosed process chloro-, bromo-, or iodoisobenzofuran-1,3-dione is reacted with ethyne in a solvent in the presence of a dissolved homogenous palladium catalyst, optionally a copper salt, a base, and optionally a solvent distinct from said base. Subsequently the obtained (ethyne-1,2-diyl)bis(isobenzofuran-1,3-dione) may be washed with a washing agent, such as a carboxylic acid, a polar aprotic solvent, or chloroform.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 28, 2015
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, Daniel Rome, Erik Lager, Dane Momcilovic
  • CROSS-LINKER
    Publication number: 20140303328
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyamides. End-capped oligo- and polyamides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyamides end-capped with PEPA.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 9, 2014
    Applicant: NEXAM CHEMICAL AB
    Inventors: Daniel ROME, David PERSSON, Erik LAGER, Dane MOMCILOVIC, Malin KNUTSSON, Jan-Erik ROSENBERG
  • Cross-linker
    Patent number: 8815999
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyimides. End-capped oligo- and polyimides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyimides end-capped with PEPA.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: August 26, 2014
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, Daniel Röme, David Persson, Erik Lager, Malin Knutsson, Dane Momcilovic
  • Cross-linker
    Patent number: 8772418
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyamides. End-capped oligo- and polyamides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyamides end-capped with PEPA.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: July 8, 2014
    Assignee: Nexam Chemical AB
    Inventors: Daniel Rome, David Persson, Erik Lager, Dane Momcilovic, Malin Knutsson, Jan-Erik Rosenberg
  • OLIGO- AND POLYIMIDES
    Publication number: 20140135448
    Abstract: An oligo- or polyimide comprising one or two residue(s) of an anhydride based acetylenic end-capper, at least one EBPA residue, at least one residue of anaromatic di-amine, and optionally at least one residue of an aromatic non-acetylenic di-anhydride is disclosed. A method for obtaining such an oligo- or polyimide is also disclosed.
    Type: Application
    Filed: March 30, 2012
    Publication date: May 15, 2014
    Applicants: MAVERICK CORPORATION, NEXAM CHEMICAL AB
    Inventors: Daniel Rome, Jan-Erik Rosenberg, Erik Lager, David Persson, Malin Knutsson, Dane Momcilovic, Robert A. Gray, James R. Magato
  • Catalysis of cross-linking
    Patent number: 8697823
    Abstract: Disclosed is use of catalysts for chain extension and/or cross-linking of oligomers or polymers comprising carbon-carbon triple bonds.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: April 15, 2014
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, Erik Lager, Daniel Röme, David Persson
  • COMPOSITIONS FOR IMPROVING POLYESTERS
    Publication number: 20140018460
    Abstract: A method for altering the melt characteristics of a polyester, such as the melt strength, the method comprising the step of melt mixing the polyester, with a tetracarboxylic dianhydride; across-linker and chain extender comprising at least two groups being able to react with a carboxy group and a phenolic hydroxyl group; and a poly functional compound comprising at least two groups selected from the group consisting of non-sterically hindered phenolic hydroxyl groups, and carboxy groups.
    Type: Application
    Filed: March 12, 2012
    Publication date: January 16, 2014
    Applicant: NEXAM CHEMICAL AB
    Inventors: Daniel Rome, David Persson, Jan-Erik Rosenberg, Dane Momcilovic
  • CROSS-LINKER
    Publication number: 20130225769
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo- and polyamides. End-capped oligo- and polyamides comprising such an end-capper may be cured at a lower temperature compared to oligo- and polyamides end-capped with PEPA.
    Type: Application
    Filed: October 21, 2011
    Publication date: August 29, 2013
    Applicant: NEXAM CHEMICAL AB
    Inventors: Daniel Rome, David Persson, Erik Lager, Dane Momcilovic, Malin Knutsson, Jan-Erik Rosenberg
  • Acetylenic polyamide
    Patent number: 8492507
    Abstract: Disclosed is an acetylenic polyamide and a composition comprising said acetylenic polyamide, which acetylenic polyamide. Said acetylenic group is suitably obtained by subjecting at least one acetylenic compound to reaction with either at least one polyamide, or at least one amino functional monomer and/or carboxylic acid, yielding a corresponding acetylenic amide monomer, oligoamide or polyamide. Amide monomers and/or oligoamides can subsequently be used in production of the acetylenic polyamide.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: July 23, 2013
    Assignee: Nexam Chemical AB
    Inventors: Jan-Erik Rosenberg, David Persson, Elisbeth Kiraly, Mehrnoush Jowkar Deriss
  • NOVEL CROSS-LINKER
    Publication number: 20130096256
    Abstract: Disclosed are novel cross-linkable end-cappers for oligo-and polyimides. End-capped oligo-and polyimides comprising such an end-capper may be cured at a lower temperature compared to oligo-and polyimides end-capped with PEPA.
    Type: Application
    Filed: April 15, 2011
    Publication date: April 18, 2013
    Applicant: NEXAM CHEMICAL AB
    Inventors: Jan-Erik Rosenberg, Daniel Röme, David Persson, Erik Lager, Malin Knutsson, Dane Momcilovic
  • CATALYSIS OF CROSS-LINKING
    Publication number: 20130079479
    Abstract: Disclosed is use of catalysts for chain extension and/or cross-linking of oligomers or polymers comprising carbon-carbon triple bonds.
    Type: Application
    Filed: May 16, 2011
    Publication date: March 28, 2013
    Applicant: NEXAM CHEMICAL AB
    Inventors: Jan-Erik Rosenberg, Erik Lager, Daniel Röme, David Persson
  • ACETYLENIC POLYAMIDE
    Publication number: 20110190469
    Abstract: Disclosed is an acetylenic polyamide and a composition comprising said acetylenic polyamide, which acetylenic polyamide. Said acetylenic group is suitably obtained by subjecting at least one acetylenic compound to reaction with either at least one polyamide, or at least one amino functional monomer and/or carboxylic acid, yielding a corresponding acetylenic amide monomer, oligoamide or polyamide. Amide monomers and/or oligoamides can subsequently be used in production of the acetylenic polyamide.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 4, 2011
    Applicant: NEXAM CHEMICAL AB
    Inventors: Jan-Erik Rosenberg, David Persson, Elisbeth Kiraly, Mehrnoush Jowkar Deriss