Patents by Inventor Manuela Imig

Manuela Imig 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).

  • Process for stabilizing cyclobutanone derivatives
    Patent number: 7504541
    Abstract: A process for stabilizing cyclobutanone derivatives, comprising adding at least one of an alkali metal carbonate, alkali metal oxide, alkaline earth metal carbonate, and alkaline earth metal oxide as a stabilizer to at least one cyclobutanone derivative of the structure where R1, R2, R3, R4, R5 and R6 are each independently hydrogen or an alkyl, aralkyl, cycloalkyl, aryl, alkylaryl, hydroxyl, alkoxy, halogen, cyano or carboxyl group; and the correspondingly stabilized cyclobutanone derivatives.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 17, 2009
    Assignee: Evonik Degussa GmbH
    Inventors: Kerstin Bodmann, Manuela Imig, Marianne Omeis
  • PROCESS FOR STABILIZING CYCLOBUTANONE DERIVATIVES
    Publication number: 20080221365
    Abstract: A process for stabilizing cyclobutanone derivatives, comprising adding at least one of an alkali metal carbonate, alkali metal oxide, alkaline earth metal carbonate, and alkaline earth metal oxide as a stabilizer to at least one cyclobutanone derivative of the structure where R1, R2, R3, R4, R5 and R6 are each independently hydrogen or an alkyl, aralkyl, cycloalkyl, aryl, alkylaryl, hydroxyl, alkoxy, halogen, cyano or carboxyl group; and the correspondingly stabilized cyclobutanone derivatives.
    Type: Application
    Filed: February 27, 2008
    Publication date: September 11, 2008
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Kerstin BODMANN, Manuela Imig, Marianne Omeis
  • Salt-free preparation of cyclobutanone
    Patent number: 6958421
    Abstract: A salt-free process for preparing cyclobutanone, including isomerizing cyclopropylmethanol, preferably in aqueous solution, in the presence of an acidic heterogeneous catalyst to form cyclobutanol and, preferably after extraction and removal of the extractant, dehydrogenating the cyclobutanol over a heterogeneous catalyst.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: October 25, 2005
    Assignee: Degussa AG
    Inventors: Kerstin Bodmann, Manuela Imig, Günther Köhler, Karl-Heinz Brühl
  • Salt-free preparation of cyclobutanone
    Publication number: 20040254401
    Abstract: A salt-free process for preparing cyclobutanone, including isomerizing cyclopropylmethanol, preferably in aqueous solution, in the presence of an acidic heterogeneous catalyst to form cyclobutanol and, preferably after extraction and removal of the extractant, dehydrogenating the cyclobutanol over a heterogeneous catalyst.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Applicant: Degussa AG
    Inventors: Kerstin Bodmann, Manuela Imig, Gunther Kohler, Karl-Heinz Bruhl
  • Process for preparing cyanoacetamide
    Publication number: 20010021787
    Abstract: Cyanoacetamide is prepared without additional catalyst by esterification of crude cyanoacetic acid with a monohydric alcohol which forms an azeotrope with water and has 4 to 10 carbon atoms, reacting the resulting ester with ammonia in the presence of a basic catalyst to give cyanoacetamide, and work-up by a mechanical separating operation and a thermal treatment.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 13, 2001
    Applicant: DEGUSSA-HUELS AKTIENGESELLSCHAFT
    Inventors: Manuela Imig, Manfred Kaufhold, Thomas Kalz
  • Process for preparing cyanoacetamide
    Patent number: 6288264
    Abstract: Cyanoacetamide is prepared without additional catalyst by esterification of crude cyanoacetic acid with a monohydric alcohol which forms an azeotrope with water and has 4 to 10 carbon atoms, reacting the resulting ester with ammonia in the presence of a basic catalyst to give cyanoacetamide, and work-up by a mechanical separating operation and a thermal treatment.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: September 11, 2001
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Manuela Imig, Manfred Kaufhold, Thomas Kalz