Patents by Inventor Wilhelm Brugging

Wilhelm Brugging 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 preparing cyclododecatriene
    Patent number: 8168841
    Abstract: Preparation of cyclododecatriene in a continuous or discontinuous process by trimerization of butadiene in the presence of a catalyst system and a solvent, the crude cyclododecatriene obtained being able to be isolated by means of distillation. The cyclooctadiene formed as by-product can likewise be isolated from the crude product.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: May 1, 2012
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Jürgen Herwig, Wilhelm Brügging, Martin Roos, Norbert Wilczok
  • PROCESS FOR PREPARING CYCLODODECATRIENE
    Publication number: 20070265184
    Abstract: Preparation of cyclododecatriene in a continuous or discontinuous process by trimerization of butadiene in the presence of a catalyst system and a solvent, the crude cyclododecatriene obtained being able to be isolated by means of distillation. The cyclooctadiene formed as by-product can likewise be isolated from the crude product.
    Type: Application
    Filed: March 20, 2007
    Publication date: November 15, 2007
    Applicant: DEGUSSA AG
    Inventors: Jurgen Herwig, Wilhelm Brugging, Martin Roos, Norbert Wilczok
  • Process for preparing high-molecular weight polyesters
    Patent number: 5468441
    Abstract: A high-molecular-weight polyester is prepared by polycondensing an aromatic dicarboxylic acid with a mixture of alkanediols and alkenediols with substantial exclusion of oxygen and in the presence of a catalyst, until a viscosity number in the range from 50 to 140 cm.sup.3 /g is reached and then postcondensing the polycondensed material in the solid-phase until the required viscosity number is reached.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: November 21, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Walter K. Homann, Thomas Gro.beta.e-Puppendahl, Wilhelm Brugging
  • Substituted aromatic polyesters
    Patent number: 4835244
    Abstract: This invention relates to polyesters corresponding to formula (I) ##STR1## wherein R.sup.1 and R.sup.2 stand for --CH.sub.2 --CH.sub.2 --Ar wherein Ar denotes an aromatic group or one of these two groups is --CH.sub.2 --CH.sub.2 --Ar while the other is an alkyl group, a substituted alkyl or an aryl group or halogen andn represents an integer with a value from 5 to 2000, and to a process for their preparation.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: May 30, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Heitz, Wilhelm Brugging