Patents by Inventor Nils Dan Anders Sodergard

Nils Dan Anders Sodergard 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).

  • Lactic acid polymers
    Patent number: 7919566
    Abstract: A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: April 5, 2011
    Assignee: Tate & Lyle Public Limited Company
    Inventors: Nils Dan Anders Södergard, Erik Mikael Stolt
  • Poly(lactic acid) stereocomplex
    Patent number: 7795358
    Abstract: Poly(lactic acid) blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection molding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: September 14, 2010
    Assignee: Tate & Lyle Public Limited Company
    Inventors: Nils Dan Anders Södergard, Erik Mikael Stolt, Heikki Kalervo Siistonen, Geoffrey A.R. Nobes
  • Novel Process for the Preparation of Polylactic Acid
    Publication number: 20090036600
    Abstract: The present invention describes a polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, a process for the preparation thereof, the use of an aromatic diol having a single benzene ring for the preparation of polyhydroxycarboxylic acid, in particular polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, as well as a method of preparing injection-molded goods or blown film, polymer blends, composite materials or nanocomposite materials using said polyhdroxycarboxylic acid.
    Type: Application
    Filed: September 28, 2005
    Publication date: February 5, 2009
    Inventors: Nils Dan Anders Södergard, Erik Mikael Stolt
  • Polylactic Acid Stereocomplex
    Publication number: 20080207840
    Abstract: Polylactic acid blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection moulding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 28, 2008
    Inventors: Nils Dan Anders Sodergard, Erik Mikael Stolt, Heikki Kalervo Siistonen, Geoffrey A.R. Nobes
  • Lactic Acid Polymers
    Publication number: 20080177009
    Abstract: A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Inventors: Nils Dan Anders Sodergard, Erik Mikael Stolt