Patents by Inventor Gernot Kohler

Gernot Kohler 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: 7737229
    Abstract: The invention relates to a process for the continuous preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators and, if desired, molecular weight regulators at from 120° C. to 350° C. and pressures in the range from 100 to 4000 bar, in which the polymer is separated from unpolymerized ethylene in a high-pressure stage at a pressure of from 100 to 500 bar and at least one low-pressure stage at a pressure of from 1 to 100 bar and the ethylene separated off in the high-pressure stage is separated from remaining monomeric, oligomeric and/or polymeric constituents and recirculated to the inlet of the tube reactor in a high-pressure circuit and the ethylene separated off in the low-pressure stage is separated from remaining monomeric, oligomeric and/or polymeric constituents and recirculated to the inlet of the tube reactor in a low-pressure circuit. The initiator is used as a solution in an isoparaffinic solvent having a boiling point of not more than 160° C.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: June 15, 2010
    Assignee: Basell Polyolefine GmbH
    Inventors: Andrei Gonioukh, Gernot Köhler, Theo Teuber, Thomas Dröge
  • Patent number: 7709584
    Abstract: A process for preparing ethylene homopolymers and copolymers in a tubular reactor having two or more polymerization zones at temperatures of between 150° C. and 350° C. and pressures in the range from 500 to 5000 bar, using oxygen as initiator, which comprises using, as molar mass regulator, one or more aliphatic ketones of the formula I, where the variable R1 is a C1-C6-alkyl or C3-C12-cycloalkyl, ethylene homopolymers and copolymers obtainable therefrom and their user for producing injection-molded products in the cosmetics, medical and food sectors are described.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: May 4, 2010
    Assignee: Basell Polyolefine GmbH
    Inventors: Frank-Olaf Mähling, Andreas Deckers, Gernot Köhler, Axel Schmitz, Lars Wittkowski, Michael Hoppach
  • Publication number: 20070123678
    Abstract: The invention relates to a process for the continuous preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators and, if desired, molecular weight regulators at from 120° C. to 350° C. and pressures in the range from 100 to 4000 bar, in which the polymer is separated from unpolymerized ethylene in a high-pressure stage at a pressure of from 100 to 500 bar and at least one low-pressure stage at a pressure of from 1 to 100 bar and the ethylene separated off in the high-pressure stage is separated from remaining monomeric, oligomeric and/or polymeric constituents and recirculated to the inlet of the tube reactor in a high-pressure circuit and the ethylene separated off in the low-pressure stage is separated from remaining monomeric, oligomeric and/or polymeric constituents and recirculated to the inlet of the tube reactor in a low-pressure circuit. The initiator is used as a solution in an isoparaffinic solvent having a boiling point of not more than 160° C.
    Type: Application
    Filed: October 27, 2004
    Publication date: May 31, 2007
    Applicant: Basell Polyolefine GmbH
    Inventors: Andrei Gonioukh, Gernot Kohler, Theo Teubner, Thomas Droge
  • Patent number: 6849698
    Abstract: In a process for polymerizing ethylene and, if desired, further monomers in a high-pressure reactor at from 140 to 320° C. and pressures of from 1000 to 4000 bar, but in any case under pressure and temperature conditions under which water displays supercritical behavior, water is introduced continuously or intermittently into the reactor.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: February 1, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Eckhard Häffner, Dieter Littmann, Frank-Olaf Mähling, Gernot Köhler
  • Patent number: 6844408
    Abstract: Ethylene homopolymers and copolymers are prepared in a tube reactor at from 160° C. to 350° C. and pressures in the range from 500 to 5000 bar, with or without use of molar mass regulators, using a peroxide mixture comprising from 1 to 95 mol %, based on the total amount of the peroxide mixture, of at least one cyclic peroxide of the formula I, where the radicals R are identical or different and are selected from among alkyl groups and aryl groups, as polymerization initiator.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 18, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Andrei Gonioukh, Lars Wittkowski, Thomas Dröge, Ernst Fischer, Roger Klimesch, Philipp Rosendorfer, Gernot Köhler, Dieter Littmann
  • Publication number: 20040214971
    Abstract: Ethylene homopolymers and copolymers are prepared in a tube reactor at from 160° C. to 350° C.
    Type: Application
    Filed: March 14, 2003
    Publication date: October 28, 2004
    Inventors: Andrei Gonioukh, Lars Wittkowski, Thomas Droge, Ernst Fischer, Roger Klimesch, Philipp Rosendorfer, Gernot Kohler, Dieter Littmann
  • Publication number: 20040054097
    Abstract: The invention relates to a method for producing ethylene homopolymers and copolymers in a tubular reactor having at least two polymerisation zones, at temperatures of between 150° C. and 350° C. and pressures of between 500 and 5000 bar, using oxygen as an initiator. Said method is characterised in that at least one aliphatic ketone of general formula (I) is used as a molar mass regulator. The variable R1 in formula (I) represents a C1-C6 alkyl or a C3-C12-cycloalkyl. The invention also relates to ethylene homopolymers and copolymers that can be obtained using the inventive method and the use of the same for producing injection-moulded products in the fields of cosmetics, medicine and food.
    Type: Application
    Filed: September 24, 2003
    Publication date: March 18, 2004
    Inventors: Frank-Olaf Maehling, Andreas Deckers, Gernot Kohler, Axel Schmitz, Lars Wittkowski, Michael Hoppach
  • Patent number: 5068228
    Abstract: The use of a metal chelate of an alkylaminoester of phosphoric acid for the prophylactic or therapeutic treatment of, in particular, diabetic neuropathy is described.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: November 26, 1991
    Inventor: Gernot Kohler
  • Patent number: 4816359
    Abstract: A polymer electrode having a thickness which is distributed among several superimposed thin film layers exhibits significantly higher area-specific capacity and current-carrying capacity. This layered arrangement is even more favorable when the thin layers are perforated. These measures are especially effective when the secondary element is operated with high currents.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: March 28, 1989
    Assignee: Varta Batterie Aktiengesellschaft
    Inventors: Dieter Nagele, Gernot Kohler, Rainer Bittihn
  • Patent number: 4569734
    Abstract: Polypyrroles are prepared by electrochemical polymerization, in particular anodic oxidation, of pyrrole alone or together with comonomers, in an aqueous electrolyte solvent which consists of not less than 50% by weight of water, in the presence of aromatic sulfonic acids and/or their salts as conductive salts. The process gives polypyrrole films which have good mechanical properties and high electrical conductivities.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: February 11, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Johann Nickl, Gernot Kohler
  • Patent number: 4568483
    Abstract: Highly electrically conductive copolymers of pyrroles and other heterocyclic compounds having a conjugated .pi.-electron system, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and other heterocyclic compounds and/or their dimers or oligomers in a polar solvent in the presence of a suitable conductive salt.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: February 4, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Petr Simak, Gernot Kohler
  • Patent number: 4567250
    Abstract: Finely divided electrically conductive pyrrole polymers are prepared by a process in which the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent. The finely divided conductive pyrrole polymers can be used for the production of moldings.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: January 28, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Walter Heckmann, Gernot Kohler, Petr Simak
  • Patent number: 4535039
    Abstract: In batteries or electrochemical stores, in particular secondary cells, the active material of the cathode and/or the anode consists of one or more electrically conductive polymers which have an electrical conductivity greater than 10.sup.-2 Ohm.sup.-1 cm.sup.-1 and contain electrochemically oxidizable and/or reducible redox groups which have a defined structure and are capable of forming two or more stable oxidation states which preferably are reversibly interconvertible.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: August 13, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Gernot Kohler
  • Patent number: 4518535
    Abstract: Air-stable, electrically conductive systems having conductivities greater than 1.times.10.sup.-3 .OMEGA..sup.-1 cm.sup.-1 are prepared by reacting a metal cation of an element of sub-group VII, VIII or I of the periodic table with a 1,9-substituted phenalene of the general formula (I) ##STR1## where X is O, NH, S, Se or Te and Y is OH, NH.sub.2 or SH, to give a metal chelate, and oxidizing this metal chelate by means of an organic electron acceptor. The electrically conductive systems can be used in the electrical industry for the production of solar cells and for converting and fixing radiation, for producing electric and magnetic switches and electrochemical stores, and for the antistatic treatment of plastics.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: May 21, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Volker Muench, Gernot Kohler, Petr Simak
  • Patent number: 4488986
    Abstract: Electrically conductive polymeric systems having electrical conductivities greater than 10.sup.-4 S/cm are prepared by a method wherein a polyarylene compound which contains one or more chain members of the formula ##STR1## where n is greater than 1, preferably from 5 to 50, R is a nitrile, acid amide, carboxyl or ester group, R.sup.1 and R.sup.2 are each hydrogen or a nitrile, acid amide, carboxyl or ester group, with the proviso that in each case one of the radicals R.sup.1 and R.sup.2 is hydrogen and the other is a nitrile, acid amide, carboxyl or ester group, and Y is an aromatic radical, preferably phenylene, is doped, in the absence of moisture and oxygen, with from 0.03 to 0.9 mole percent of an electron-attracting or electron-donating complexing agent.
    Type: Grant
    Filed: August 2, 1983
    Date of Patent: December 18, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Petr Simak, Gernot Kohler
  • Patent number: 4468291
    Abstract: Polypyrrole films are produced by electrochemical polymerization of a pyrrole, or a mixture of a pyrrole with other comonomers, in an electrolyte solvent in the presence of a conductive salt, by a continuous process wherein the pyrrole polymer is deposited in the form of a film on anodic material which has a sheet-like structure and is passed continuously through the electrolyte solution.As shown in FIG. 1, this procedure can be carried out in an electrolysis vessel (1) which contains the electrolyte solution (2), a cathode (3) which dips into this solution, and, as the anode, a rotating cylindrical roller (4) which is partially or completely immersed in the electrolyte solution (2); the polypyrrole film (6) is deposited on the anodic surface (5) of the cylindrical roller (4), and is subsequently removed therefrom.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: August 28, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Naarmann, Gernot Kohler, Johannes Schlag