Patents by Inventor Eva Gottberg-Klingskog

Eva Gottberg-Klingskog 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).

  • Water-soluble polyurethane and use thereof to thicken water-based systems such as water-based paints
    Patent number: 5496908
    Abstract: A water-soluble polyurethane, including a polymer backbone; end groups provided on the ends of the polymer backbone and containing water-soluble oxyethylene groups having a molecular weight ranging from 400 to 15,000, and groups pendant from the polymer backbone and containing hydrocarbon groups having 8-22 carbon atoms, in a number of at least 0.1 per urethane bond. The water-soluble polyurethane has moderate viscosities in aqueous solution and is especially useful as a thickener, for instance, in alkyd- or latex-based paints.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: March 5, 1996
    Assignee: Berol Nobel AB
    Inventors: Peter Bostrom, Annelie Askenbom, Eva Gottberg-Klingskog
  • Process for the production of epoxides
    Patent number: 5101051
    Abstract: Epoxides are prepared by reaction of compounds containing olefinic unsaturation, for example .alpha.-olefins, terpenes and steroids, with an aliphatic diperoxydicarboxylic acid. The diperoxydicarboxylic acid contains 2 to 16 carbon atoms and suitably at least 6 carbon atoms. The process gives a good epoxidation process and does not give rise to byproduct formation.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: March 31, 1992
    Assignee: Eka Nobel
    Inventors: Harriet Ericsson, Elina Sandberg, Eva Gottberg-Klingskog