Patents by Inventor Gernot Köhler

Gernot Köhler 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).

  • Ionic crosslinking of an ethylene copolymer in twin-screw extruder
    Patent number: 5003001
    Abstract: Ionically crosslinked ethylene copolymers prepared by mixing a carboxyl-containing copolymer with an aqueous metal salt solution in the reaction zone of a twin-screw extruder and transferring the product to a devolatilization zone, and are used as adhesion promoters, injection molded articles or laminating films.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: March 26, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Hasenbein, Lothar Schlemmer, Thomas Muehlenbernd, Gernot Koehler
  • Preparation of aqueous synthetic wax dispersions
    Patent number: 4996259
    Abstract: Aqueous synthetic wax dispersions which contain, as an essential component of the solid substance, a partially or completely neutralized copolymer of a C.sub.2 -C.sub.4 -olefin and an unsaturated mono- or dicarboxylic acid or dicarboxylic anhydride are prepared by neutralizing and dispersing the solid substance in an aqueous medium at above the melting point of the copolymer, by a method in which the processes of neutralization and of dispersion are carried out in one extruder or in a plurality of extruders connected in series.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: February 26, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Gernot Koehler, Juergen Schmidt-Thuemmes, Norbert Hasenbein, Lothar Schlemmer, Wolfram Dietsche
  • Preparation of amine-modified ethylene/carboxylic acid copolymers, such copolymers, and use thereof as adhesion promoters and cable sheathing
    Patent number: 4948850
    Abstract: A high molecular weight ethylene copolymer is prepared by high-pressure copolymerization of ethylene with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, carboxylic anhydride or a derivative thereof in the presence of a tertiary organic monoamine, preferably from 10 to 100 mol % thereof, based on the unsaturated carboxylic acid used, and can be used for preparing adhesion promoters and cable sheathing.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: August 14, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Hasenbein, Thomas Muehlenbernd, Gernot Koehler
  • Preparation of amine-modified ethylene/carboxylic acid copolymers, such copolymers, and use thereof as adhesion promoters and cable sheathing
    Patent number: 4935476
    Abstract: A high molecular weight ethylene copolymer is prepared by high-pressure copolymerization of ethylene with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, carboxylic anhydride or a derivative thereof in the presence of a tertiary organic monoamine, preferably from 10 to 100 mol % thereof, based on the unsaturated carboxylic acid used, and can be used for preparing adhesion promoters and cable sheathing.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: June 19, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Hasenbein, Thomas Muehlenbernd, Gernot Koehler
  • Modified polyacetylene
    Patent number: 4925897
    Abstract: Polyacetylene which is modified by reaction with a dienophilic compound, preparation of the said polyacetylene and its use for the production of moldings by processing by a thermoplastic method.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: May 15, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Gernot Koehler
  • Electrically conductive pyrrole copolymers and their preparation
    Patent number: 4640749
    Abstract: Highly electrically conductive copolymers of pyrroles and alkynes and/or aromatics, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and alkynes and/or aromatics in a polar solvent in the presence of a suitable conductive salt.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: February 3, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Gernot Koehler, Johannes Schlag
  • Electrically conductive pyrrole copolymer article
    Patent number: 4532188
    Abstract: Highly electrically conductive copolymers of pyrroles and alkynes and/or aromatics, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and alkynes and/or aromatics in a polar solvent in the presence of a suitable conductive salt.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: July 30, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Gernot Koehler, Johannes Schlag