Patents by Inventor Klaus Kohlammer

Klaus Kohlammer 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).

  • Crosslinkable protective colloids for use in the polymerization of unsaturated monomers
    Patent number: 6316568
    Abstract: A water-soluble, crosslinkable protective colloid is provided having a weight-average molecular weight of least than 500,000 comprising: a) 20 to 95% by weight of monomer units containing sulphonic acid or sulphonate groups, b) 4 to 80% by weight of monomer units containing N-methylol or N-alkoxymethyl groups, and c) 0.1 to 20% by weight of hydrophobic monomer units such as water insoluble ethylenically unsaturated compounds and the hydrophobic end groups of initiator radicals or regulator molecules. Optionally, up to 50% by weight of the monomer units containing sulphonic acid or sulphonate groups can be replaced by monomer units containing carboxyl groups or monomer units containing amide groups.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: November 13, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Klaus Kohlammer, Gerhard Koegler, Monika Rockinger, Walter Dobler