Patents by Inventor Siegfried Gast

Siegfried Gast 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).

  • Thixotropic agents comprising ethylene terpolymer waxes
    Patent number: 7094827
    Abstract: The invention relates to a method for producing thixotropic agents containing 0.1–30 wt.-% of at least one ethylene terpolymer wax, 5–7 wt.-% of at least one solvent, which is incompatible with the ethylene terpolymer wax, 5–85 wt.-% of of at least one solvent which is compatible with the ethylene terpolymer wax and with one or more of the first-named solvents.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: August 22, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Fechtenkötter, Lars Wittkowski, Katrin Zeitz, Michael Ehle, Siegfried Gast, Wolfgang Kasel, Andreas Deckers
  • Use of aqueous dispersions containing ethylene copolymer wax
    Publication number: 20060124554
    Abstract: Use of aqueous dispersions comprising at least one at least partially neutralized ethylene copolymer wax selected from among ethylene copolymer waxes which comprise, as comonomers in copolymerized form, (A) from 26.1 to 39% by weight of at least one ethylenically unsaturated carboxylic acid and (B) from 61 to 73.9% by weight of ethylene, ?and ethylene copolymer waxes which comprise, in copolymerized form, (A?) from 20.5 to 38.9% by weight of at least one ethylenically unsaturated carboxylic acid, (B?) from 60 to 79.4% by weight of ethylene and (C?) from 0.1 to 15% by weight of at least one ethylenically unsaturated carboxylic ester, as auxiliaries for wastewater treatment.
    Type: Application
    Filed: June 8, 2004
    Publication date: June 15, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Andreas Fechtenkotter, Andreas Deckers, Michael Ehle, Siegfried Gast, Wolfgang Kasel, Frank-Olaf Mahling, Wilhelm Weber, Walter Schneider
  • Thixotropic agents comprising ethylene terpolymer waxes
    Publication number: 20050131131
    Abstract: A process for preparing thixotropic agents comprising from 0.1 to 30% by weight of at least one ethylene terpolymer wax, from 5 to 70% by weight of at least one first solvent incompatible with the ethylene terpolymer wax, and from 5 to 85% by weight of at least one solvent compatible with the ethylene terpolymer wax and with said first solvent(s).
    Type: Application
    Filed: April 8, 2003
    Publication date: June 16, 2005
    Inventors: Andreas Fechtenkoetter, Lars Wittkowski, Katrin Zeitz, Michael Ehle, Siegfried Gast, Wolfgang Kasel, Andreas Deckers
  • Preparation of emulsifiable ethylene polymers
    Patent number: 6562779
    Abstract: Emulsifiable ethylene polymers comprising copolymers of from 90 to 95% by weight of ethylene, from 4 to 10% by weight of one or more C3-C12 alkenecarboxylic acids, and from 0 to 1.2% by weight of one or more tertiary esters of the corresponding C3-C12 alkenecarboxylic acids, where the wax has a cinematic melt viscosity of from 800 to 3000 mm2/s, measured at 120° C.; and a process for preparing the novel emulsifiable ethylene polymers, emulsions comprising the novel ethylene polymers, a process for preparing the emulsions from the novel ethylene polymers, and also floor cleaners, car cleaners, leather cleaners and stone cleaners, and coatings for surfaces made from wood, metal, paper, glass or from plastics, comprising aqueous emulsions of the novel emulsifable waxes.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: May 13, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Lars Wittkowski, Andreas Deckers, Wilhelm Weber, Stefan Weiss, Michael Ehle, Siegfried Gast
  • Preparation of emulsifiable ethylene polymers
    Publication number: 20010025021
    Abstract: Emulsifiable ethylene polymers comprising copolymers of
    Type: Application
    Filed: February 14, 2001
    Publication date: September 27, 2001
    Inventors: Lars Wittkowski, Andreas Deckers, Wilhelm Weber, Stefan Weiss, Michael Ehle, Siegfried Gast