Patents by Inventor Björn Treffeisen

Björn Treffeisen 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).

  • Siloxane oligomers, a process for their production and their use
    Patent number: 6946537
    Abstract: Siloxane oligomers of the general formula I or II wherein at least one functionalized alkyl group is present per oligomer molecule. The siloxane oligomers are produced by oligomerization of halogenalkyltrihalogensilanes, and co-optionally co-oligomerized with (C1-C18)-alkyl-, phenyl-, aryl- or aralkyl-trihalogensilanes and/or silicon tetrachloride, in the presence of alcohol and water, following which the halogenalkyl function is optionally modified in a further step. The siloxane oligomers can be used as coupling agents in rubber mixtures or as building preservation agents.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: September 20, 2005
    Assignee: Degussa AG
    Inventors: Roland Krafczyk, Björn Treffeisen, Jaroslaw Monkiewicz
  • Process for the production of yellow bis(3-[trialkoxysily]alkyl) polysulfanes
    Patent number: 6545171
    Abstract: Process for the production of yellow bis(3-[trialkoxy-silyl]alkyl)polysulfanes with an iodine color index of ≦10 mg iodine/100 ml, in which an organic acid is added to neutral chloroalkyltrialkoxysilane and then reacted with sodium polysulfide (NPS) or sodium sulfide (Na2S) and sulfur or sodium polysulfide (NPS) and Na2S in alcohol.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: April 8, 2003
    Assignee: Degussa AG
    Inventors: Roland Krafczyk, Ulrich Deschler, Björn Treffeisen