Patents by Inventor Jens Bruhn

Jens Bruhn 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).

  • Treatment for polyether polyols
    Patent number: 6245947
    Abstract: A process for treating polyether polyols prepared in a conventional manner by base-catalyzed reaction of H-functional initiator substances with alkylene oxides comprises a combination of a thermal-reactive step at a pH of less than 7 and a temperature above 60° C. and a thermal-distillative step in a countercurrent column using a purifying agent. The polyether polyols prepared according to the invention are used for producing low-fogging and low-odor PUR foams.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: June 12, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Guettes, Gerd Hoeppner, Monika Wetterling, Heinz Auer, Jens Bruhn, Stefan Dinsch, Juergen Winkler