Patents by Inventor Ulrich Koemm

Ulrich Koemm 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: 4781844
    Abstract: A textile finishing agent comprising, by weight, about(A) 50-80 parts of an aqueous colloidal suspension, in the form of a sol, at least one of an organosilsesequioxane having units of the formula RSiO.sub.3/2 (wherein R is optionally substituted alkyl or aryl of up to 7 carbon atoms) and a cocondensate of a hydrolyzate of a tetraalkoxysilane with an organotrialkoxysilane having RSiO.sub.3/2 or SiO.sub.2 units, and(B) 20-50 parts of an aqueous dispersion which contains about 5 to 50% by weight of an organic polymer resin which contains perfluoroalkyl groups which have 3 to 20 C atoms and which, in addition to fluorine atoms, can contain at most 1 hydrogen atom or chlorine atom per 2 C atoms and in which the perfluoroalkyl chain can be interrupted by oxygen and which has a fluorine content of about 0.2 to 40% by weight.Textiles finished therewith are hydrophilic, oleophilic and soil resistant.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: November 1, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilfried Kortmann, Helmut Steinberger, Josef Pfeiffer, Ulrich Koemm
  • Patent number: 4774273
    Abstract: The present invention relates to the use of perfluoroalkanesulphonic acid aryl esters as anti-drip agents in flame-repellant moulding compositions based on thermoplastic aromatic polycarbonates, moulding compositions containing flameproofing agents and these anti-drip agents and a process for the preparation of such moulding compositions.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: September 27, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Klaus Kircher, Ludwig Bottenbruch, Ulrich Koemm
  • Patent number: 4540765
    Abstract: To render surfaces, such as of textile fabrics and fibers, repellent to oil and/or water, they are treated with novel polyurethanes containing perfluoroalkyl ligands and having as recurring structural units ##STR1## with chain ends of the formula--YA.sub.m'in whichX, Y and Z each independently is the skeletal radical of an aliphatic or aromatic di- or polyisocyanate,R.sub.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: September 10, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Koemm, Klaus Geisler