Patents by Inventor Lutz Willner

Lutz Willner 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).

  • Method for increasing the efficiency of surfactants with simultaneous suppression of lamellar mesophases and surfactants with an additive added thereto
    Patent number: 7468349
    Abstract: The invention relates to a method for increasing the efficiency of surfactants as well as to a method for suppressing lamellar mesophases in microemulsions. According to the invention, block copolymers having a water-soluble block A and a water-insoluble part B are admixed to the surfactants. The use of these substances as additives can considerably increase the efficiency of the surfactants. Moreover, the addition of the block copolymers suppresses the formation of undesired lamellar mesophases in microemulsions.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: December 23, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Jürgen Allgaier, Lutz Willner, Dieter Richter, Britta Jakobs, Thomas Sottman, Reinhard Strey
  • Method for increasing the efficiency of surfactants with simultaneous suppression of lamellar mesophases and surfactants with an additive added thereto
    Publication number: 20040054064
    Abstract: The invention relates to a method for increasing the efficiency of surfactants as well as to a method for suppressing lamellar mesophases in microemulsions. According to the invention, block copolymers having a water-soluble block A and a water-insoluble part B are admixed to the surfactants. The use of these substances as additives can considerably increase the efficiency of the surfactants. Moreover, the addition of the block copolymers suppresses the formation of undesired lamellar mesophases in microemulsions.
    Type: Application
    Filed: August 19, 2003
    Publication date: March 18, 2004
    Inventors: Jurgen Allgaier, Lutz Willner, Dieter Richter, Britta Jakobs, Thomas Sottmann, Reinhard Strey
  • Method for increasing the efficiency of surfactants with simultaneous suppression of lamellar mesophases and surfactants with an additive added thereto
    Patent number: 6677293
    Abstract: The invention relates to a method for increasing the efficiency of surfactants and to a method for suppressing lamellar mesophases in microemulsions. Additive block co-polymers with a water-soluble block A and a water-insoluble part B are added to the surfactants. The efficiency of surfactants can be in-creased to a substantial extent by using said compounds as additives. The formation of undesirable lamellar mesophases in microemulsions is suppressed by adding said block co-polymers.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: January 13, 2004
    Assignee: Forschungszentrum Jülich GmbH
    Inventors: Jürgen Allgaier, Lutz Willner, Dieter Richter, Britta Jakobs, Thomas Sottmann
  • Process for the preparation of hydrophobic/hydrophile AB block copolymers
    Patent number: 6284847
    Abstract: The invention relates to a process for the preparation of hydrophobic-hydrophilic AB block copolymers wherein block A consists of the monomer unit a, which is conjugated diene, and block B consists of the monomer unit b, which is epoxide, and the invention also relates to the AB block copolymer synthesized by the preparation process, as well as to micellar systems made from the AB block copolymer. According to the invention, the AB block copolymer is synthesized in two steps, whereby the first step is the preparation of block A in a nonpolar solvent and the second step is the preparation of block B in a polar solvent.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 4, 2001
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Jürgen Allgaier, Lutz Willner, Dieter Richter