Patents by Inventor Stefan Kowatsch

Stefan Kowatsch 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).

  • Phenol-Formaldehyde Resins, Method for the Production Thereof and Use Thereof as Binders
    Publication number: 20110015341
    Abstract: A phenol-formaldehyde resin, which can be obtained by alkalinically catalyzed condensation of phenol and formaldehyde in the presence of at least one salt of inorganic acids and by neutralization by means of an inorganic or organic acid following the condensation, wherein the production takes place with the addition of at least one compound of the formula R1—(CH2)n—R2, in which R1 and R2, independently of one another, stand for —C(O)R, —COOR, —CN, or —NO2, and R represents H or CH3, and n has the value of 1 or 2. Also disclosed are the production of such resins and their use as binders for mineral-fiber-based insulating products.
    Type: Application
    Filed: January 21, 2008
    Publication date: January 20, 2011
    Applicant: Dynea Oy
    Inventors: Stefan Kowatsch, Karl Loidolt, Christoph Prock
  • Alkyd resins as non-formaldehyde binders for nonwoven products
    Publication number: 20080038977
    Abstract: Curable formaldehyde-free aqueous binders comprising alkyd resin dispersions or hybrid alkyd-acrylic resin dispersions that are useful in producing nonwoven products such as fiberglass insulation, roofing glass mats and filtration materials.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Applicant: Dynea Oy
    Inventors: Jan Lebduska, Robert Schmidt, Elena Pisanova, Hendrikus van Herwijnen, Stefan Kowatsch