Patents by Inventor Gunther Illmann

Gunther Illmann 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).

  • Process for the preparation of oxidation products of ethylene copolymers, and their use
    Patent number: 4378998
    Abstract: Low-melting, easily processable and at the same time hard polar waxes are obtained by treating copolymers, which are composed of ethylene and 0.5 to 50% by weight of a monomer containing oxygen-containing groups and have melt indices (MFI 190/2) of between 0.01 and 400 g/10 minutes, in the molten state, dispersed in a dispersing agent which is inert towards oxygen, with oxygen or oxygen-containing gases. Preferably, ethylene/vinyl acetate copolymers are oxidized, and these oxidation products are particularly suitable as the wax component in water-based and/or organic solvent-based polishes and in pastes.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: April 5, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Korbanka, Karl-Heinz Stetter, Gunther Illmann, Rolf Jacob, Otto Malitschek, Josef Strehle
  • Mixed oxidation product on the basis of bark waxes and other waxes
    Patent number: 4083731
    Abstract: A mixture of wax acids is prepared by oxidizing by means of chromosulfuric acid a mixture of a bark wax with a further natural or synthetic wax, preferably a hydrocarbon wax. The mixture of wax acids is especially suitable as wax component in polishes.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: April 11, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Walter Brotz, Gunther Illmann, Karl Heinz Stetter
  • Process for the manufacture of water-clear copolymer dispersions
    Patent number: 3983057
    Abstract: Copolymer dispersions can be prepared by emulsion polymerization of mixtures of unsaturated carboxylic acids and the esters thereof in the presence of regulators. Using sulfur containing compounds as regulators odorless and colorless dispersions which do not discolor are obtained if mercapto compounds having at least two SH-groups are used as regulator and the dispersions after polymerization are treated with hydrogen peroxide. The dispersions are especially suitable as film forming component in dry bright emulsions for the care of floors.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: September 28, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunther Illmann, Norbert Mayer
  • Process for the manufacture of aqueous copolymer dispersions
    Patent number: 3974117
    Abstract: Copolymer dispersions can be prepared by emulsion polymerization of mixtures of unsaturated carboxylic acids and the esters thereof in the presence of regulators. Using sulfur containing compounds as regulators, odorless and colorless dispersions which do not discolor are obtained if the dispersions after polymerization are treated with hydrogen peroxide. The dispersions are especially suitable as film forming component in dry bright emulsions for the care of floors.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: August 10, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunther Illmann, Norbert Mayer
  • Lubricant for polyvinyl chloride materials
    Patent number: 3963658
    Abstract: The invention is concerned with novel modified candelilla waxes which are obtained by treating natural candelilla wax with magnesium, calcium, barium, zinc or aluminium hydroxide to such an extent that the product has substantially no acid number and a saponification number of from 5 to 20 units below that of the starting wax. The modified waxes of the invention do not, in contrast to natural wax, render tranparent PVC materials turbid during their processing, while the good properties of the natural lubricant remain unchanged.
    Type: Grant
    Filed: March 18, 1975
    Date of Patent: June 15, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Walter Brotz, Gunther Illmann, Alfred Riedel, Friedrich Zinnert