Patents by Inventor Wolfram Baumgärtner

Wolfram Baumgärtner 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).

  • Aromatic aldehyde resins and their use as emulsion breakers
    Patent number: 6646016
    Abstract: Resins useful in methods of breaking oil-water emulsions. The resins obtained by reacting a compound of formula 1 with an aldehyde and alkoxylating, in any order: wherein X is —NHR1; —COOH; or —CONHR2; and is ortho—, meta— or para— to X and is a radical of —O—R3; —C(O)R4; —OC(O)R5; —NR6R7; wherein R1-R7 values are defined herein.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: November 11, 2003
    Assignee: Clariant GmbH
    Inventors: Frank Holtrup, Elisabeth Wasmund, Wolfram Baumgärtner, Michael Feustel
  • Aromatic aldehyde resins and their use as emulsion breakers
    Patent number: 6465528
    Abstract: The present invention relates to resins obtained by reacting a compound of formula 1 with an aldehyde and alkoxylating, in any order: wherein X is —OH, Y is ortho-, meta- or para- to X and is a radical of formula 4, wherein R5 is a C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl, or C7-C30-alkylaryl. The resin has a molecular mass from 250 to 100,000 and is useful in methods of breaking oil-water emulsions.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: October 15, 2002
    Assignee: Clariant GmbH
    Inventors: Frank Holtrup, Elisabeth Wasmund, Wolfram Baumgärtner, Michael Feustel