Patents by Inventor Rainer Urban

Rainer Urban 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 isobutene homopolymers or copolymers
    Patent number: 9458262
    Abstract: Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C1-C12-hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 4, 2016
    Assignee: BASF SE
    Inventors: Hannah Maria Koenig, Rainer Urban, Klaus Muehlbach, Thomas Wettling, Uwe Rachwalsky, Stefan Hirsch, Anne Berg, Helmut Mach
  • PROCESS FOR PREPARING ISOBUTENE HOMOPOLYMERS OR COPOLYMERS
    Publication number: 20130102748
    Abstract: Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C1-C12-hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 25, 2013
    Inventors: Hannah Maria Koenig, Rainer Urban, Klaus Muehlbach, Thomas Wettling, Uwe Rachwalsky, Stefan Hirsch, Anne Berg, Helmut Mach
  • ?-olefin/isobutene diblock copolymers
    Patent number: 8357829
    Abstract: The present invention relates to diblock copolymers of the formula A-B which are formed from a polymer block A which is formed essentially from ?-olefin units having from 6 to 22 carbon atoms, and a polymer block B which is formed essentially from isobutene units, to a process for their preparation, to their use in lubricant compositions and to lubricant compositions which comprise such diblock copolymers.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: January 22, 2013
    Assignee: BASF SE
    Inventors: Phillip Hanefeld, Hans Peter Rath, Helmut Mach, Rainer Urban
  • ALPHA-OLEFIN/ISOBUTENE DIBLOCK COPOLYMERS
    Publication number: 20110034360
    Abstract: The present invention relates to diblock copolymers of the formula A-B which are formed from a polymer block A which is formed essentially from ?-olefin units having from 6 to 22 carbon atoms, and a polymer block B which is formed essentially from isobutene units, to a process for their preparation, to their use in lubricant compositions and to lubricant compositions which comprise such diblock copolymers.
    Type: Application
    Filed: May 6, 2009
    Publication date: February 10, 2011
    Applicant: BASE SE
    Inventors: Phillip Hanefeld, Hans Peter Rath, Helmut Mach, Rainer Urban