Patents by Inventor Lars-Olof Ryrfors

Lars-Olof Ryrfors 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: 6277910
    Abstract: The invention relates to a water-borne hybrid binder composition. It is obtained by mixing about 20-80% by weight of A), an aqueous dispersion of a polymer, said dispersion having a dry-solids content of at least 45% by weight, and containing at least 0.1% by weight of B) a single surfactant or a mixture of two or more different surfactants and protective colloids, and about 80-20% of C) one or more resins being emulsifiable in water and having a dry solids content above 90% by weight, by adding the resin C to the dispersion A under agitation, the resulting hybrid binder composition obtaining a dry-solids content of 60-95% by weight. The invention also relates to the use of the binder composition as a component in a paint or lacquer mixture.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: August 21, 2001
    Assignees: Akzo Nobel Industrial Coatings, AB, Hoechst-Perstorp AB
    Inventors: Jørgen Rassing, Michael Borén, Lars-Olof Ryrfors, Jan-Erik Jönsson
  • Patent number: 4234467
    Abstract: Binder for a pressure sensitive adhesive, characterized in that it exists as a polymer dispersed in water and obtained by emulsion polymerization of:(A) 65.0-99.4 percent by weight of one or more acrylic esters with 4-18, preferably 6-10 carbon atoms in the alcohol part of the ester, the esters being selected in such a way that a polymerization of only these esters gives a tacky polymer with a Tg-value below 0.degree. C., preferably below -20.degree. C.(B) 2.0-0.1 percent by weight of a polymerizable compound with the formula ##STR1## or with the formula wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in the specification(C) 5.0-0.5 percent by weight of at least one ethylenically unsaturated acid such as acrylic acid, methacrylic acid or itaconic acidand(D) 28.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: November 18, 1980
    Assignee: Hoechst-Perstorp AB
    Inventors: Lars-Olof Ryrfors, Mats S. O. Hassander