Patents by Inventor Cornelis Koning

Cornelis Koning has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8535570
    Abstract: The present invention relates to a process for the preparation of a conductive polymer composition comprising the steps of A) providing a latex containing a conductive polymer; B) mixing the latex from A with either an aqueous latex of a polymer, or with (a) water-soluble precursor(s) of a polymer; C) removing water from the so obtained mixture; D) heating the product from step C) to a temperature at which the polymer added in step B flows or where the polymer introduced in step B is formed from out of its precursor(s); and E) processing and/or solidifying the product of step D) into a desired form, wherein the amount of conductive polymer is between 0.1 and 10 wt % relative to the total of the total of components in step A and B. In step A optionally carbon nanotubes (CNTs) in an aqueous medium are preferably added to the latex containing conductive polymer. In that case the conductive polymer may behave as a conductive polymeric surfactant for the CNTs dispersed in water.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: September 17, 2013
    Assignee: Stichting Dutch Polymer Institute
    Inventors: Marie Hermant, Lubertus Klumperman, Cornelis Koning, Paul Van Der Schoot
  • Patent number: 8487038
    Abstract: The invention relates to polycarbonate containing a dianhydrohexitol residue, obtainable from a polysaccharide, and a polyol residue, wherein the polycarbonate comprises between 0.2 and 5 mmol hydroxyl groups per gram polymer. The polycarbonate may be branched and comprises functional groups that can react with suitable crosslinkers. The polycarbonate can be used in for example coating compositions.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: July 16, 2013
    Assignee: Stichting Dutch Polymer Institute
    Inventors: Bart Noordover, Robbert Duchateau, Cornelis Koning, Rudolfus Van Benthem, Daniel Haveman
  • Patent number: 8399553
    Abstract: The present invention relates to a (process for preparation of a) carbon nanotubes reinforced polymer, wherein the matrix polymer has both a low molecular weight fraction as well as a high molecular weight fraction, as a result of which the level of conductivity of the resulting composite can be controlled.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: March 19, 2013
    Assignee: Stichting Dutch Polymer Institute
    Inventors: Cornelis Koning, Nadia Grossiord, Jan Meuldijk, Joachim Loos
  • Publication number: 20110031447
    Abstract: The present invention relates to a process for the preparation of a conductive polymer composition comprising the steps of A) providing a latex containing a conductive polymer; B) mixing the latex from A with either an aqueous latex of a polymer, or with (a) water-soluble precursor(s) of a polymer; C) removing water from the so obtained mixture; D) heating the product from step C) to a temperature at which the polymer added in step B flows or where the polymer introduced in step B is formed from out of its precursor(s); and E) processing and/or solidifying the product of step D) into a desired form, wherein the amount of conductive polymer is between 0.1 and 10 wt % relative to the total of the total of components in step A and B. In step A optionally carbon nanotubes (CNTs) in an aqueous medium are preferably added to the latex containing conductive polymer. In that case the conductive polymer may behave as a conductive polymeric surfactant for the CNTs dispersed in water.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 10, 2011
    Inventors: Marie Hermant, Lubertus Klumperman, Cornelis Koning, Paul Van Der Schoot
  • Publication number: 20110034616
    Abstract: The invention relates to polycarbonate containing a dianhydrohexitol residue, obtainable from a polysaccharide, and a polyol residue, wherein the polycarbonate comprises between 0.2 and 5 mmol hydroxyl groups per gram polymer. The polycarbonate may be branched and comprises functional groups that can react with suitable crosslinkers. The polycarbonate can be used in for example coating compositions.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 10, 2011
    Inventors: Bart Noordover, Robbert Duchateau, Cornelis Koning, Rudolfus Van Benthem, Daniel Haveman
  • Publication number: 20100160548
    Abstract: Process for the production of a polyester by the polycondensation of a mixture comprising isoidide, and a dicarboxylic acid or dicarboxylic acid anhydride, wherein the reaction is performed in the melt of the monomers and wherein these monomers are not activated. The polyesters based on one or more of the three isomers of dianhydrohexitol, being isosorbide, isomannide and isoidide, have properties which makes them suitable to be used in powder coatings, toner compositions as well as engineering plastics. The polyesters include a polyester according to the following formula, wherein n ranges from 3 to 300.
    Type: Application
    Filed: September 13, 2007
    Publication date: June 24, 2010
    Inventors: Bart Adrianus Johannes Noordover, Rafael Jean Sablong, Robert Duchateau, Rudolfus Antonius Theodorus Maria van Benthem, Weihua Ming, Cornelis Koning, Jacco van Haveren
  • Publication number: 20100069559
    Abstract: The present invention relates to a (process for preparation of a) carbon nanotubes reinforced polymer, wherein the matrix polymer has both a low molecular weight fraction as well as a high molecular weight fraction, as a result of which the level of conductivity of the resulting composite can be controlled.
    Type: Application
    Filed: April 6, 2007
    Publication date: March 18, 2010
    Applicant: STICHTING DUTCH POLYMER INSTITUTE
    Inventors: Cornelis Koning, Nadia Grossiord, Jan Meudijk, Joachim Loos
  • Publication number: 20060211807
    Abstract: The present invention relates to a process for the preparation of a carbon nanotubes reinforced polymer. The process comprises the following steps: a) contacting carbon nanotubes in an aqueous medium with a water-soluble component, comprising either a water-soluble first polymer or a water-soluble surfactant; b) mixing the resulting product from step A) with either an aqueous latex of a second polymer, or with (a) water-soluble precursor(s) of a second polymer; c) removing water from the so obtained mixture; d) heating the product from step C) to a temperature at which the second polymer flows or where the second polymer is formed from out of its precursor(s); and e) processing and/or solidifying the product of step D) into a desired form. As a result the carbon nanotubes retain essentially their original aspect ratio. As a result, mechanical and conductivity properties are improved.
    Type: Application
    Filed: February 12, 2004
    Publication date: September 21, 2006
    Inventors: Cornelis Koning, Oren Regev, Joachim Loos