Patents by Inventor Artur Reischl

Artur Reischl 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).

  • Polyurethane resins prepared from active hydrogen containing material which is a dispersion of polyisocyanate-polyaddition products in hydroxyl containing compounds as dispersing agents
    Patent number: 4092275
    Abstract: The instant invention relates to the use of stable, relatively low viscosity dispersions of polyisocyanate-polyaddition products in hydroxyl containing compounds as dispersing agents in the preparation of polyurethane resins. The dispersions are made by a process which broadly comprises mixing an aqueous dispersion of an isocyanate-polyaddition product with a compound having at least two hydroxyl groups and having a boiling point about 100.degree. C, and thereafter at least partially distilling off the water.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: May 30, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Gert Jabs, Werner Dietrich, Alberto Carlos Gonzalez-Dorner
  • Microporous sheets and a process for making them
    Patent number: 4086193
    Abstract: A method for making microporous sheets is provided wherein a dispersion of a cationic and/or anionic polyurethane is mixed with a solution containing a non-ionic polyurethane and the resulting mixture is coagulated with a non-solvent for the non-ionic polyurethane.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: April 25, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Artur Reischl
  • Process for the production of polyisocyanates containing uretdione groups
    Patent number: 3993641
    Abstract: The instant invention is directed to a process for the continuous production of aromatic polyisocyanates containing uretdione groups. The process broadly comprising dimerizing an aromatic polyisocyanate in a continuous, coolable screw reactor at a temperature of from -30.degree. to +70.degree. C.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: November 23, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eckhard Tiemann, Artur Reischl, Klaus Konig, Hartmut Hetzel