Patents by Inventor Marc Leimenstoll

Marc Leimenstoll 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).

  • Patent number: 9410013
    Abstract: The present invention relates to reactive preparations, comprising isocyanate-functional polyurethane building blocks, to a method for the production thereof, and to the use thereof as or in adhesives having high initial strength and high mechanical strength.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: August 9, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Marc Leimenstoll, Sebastian Doerr, Christos Karafilidis, Peter Reichert
  • Patent number: 8729210
    Abstract: Prepolymers, which are accessible from formamides of low molecular weight di- or triamines (formamide-terminated low molecular weight compounds) and di- or polyisocyanates, of the general formula (II): X—[—N(CHO)—CO—NH—R1—NCO]n??(II) wherein X represents a linear or branched aliphatic, cycloaliphatic, heterocyclic and/or aromatic structural unit having 2 to 40 carbon atoms, and which is optionally further substituted and/or optionally comprises one or more heteroatoms, wherein R1 represents an organic radical which may optionally contain one or more heteroatoms and which may further contain one or more additional free isocyanate groups and/or one or more urethane, biuret, carbodiimide, isocyanurate, allophanate, iminooxadiazinedione and/or uretdione structural units, and wherein n?2; processes for making the same; compositions containing the same; and uses thereof.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: May 20, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Harald Blum, Evelyn Peiffer, Marc Leimenstoll
  • Publication number: 20110172321
    Abstract: The invention relates to innovative viscosity stabilizers for hotmelts, to melt-viscosity-stable hotmelts comprising these viscosity stabilizers, to a process for preparing them and to their use.
    Type: Application
    Filed: October 6, 2010
    Publication date: July 14, 2011
    Applicant: RHEIN CHEMIE RHEINAU GmbH
    Inventors: Wilhelm Laufer, Bernd Kray, Peter Schuster, Christian Scheffner, Serdar Uestuenbas, Marc Leimenstoll, Peter Reichert, Eduard Mayer, Matthias Wintermantel
  • Patent number: 7923574
    Abstract: The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: April 12, 2011
    Assignee: Bayer MaterialScience AG
    Inventors: Marc Leimenstoll, Burkhard Köhler, Christos Karafilidis, Matthias Wintermantel
  • Publication number: 20110028582
    Abstract: The present invention relates to reactive preparations, comprising isocyanate-functional polyurethane building blocks, to a method for the production thereof, and to the use thereof as or in adhesives having high initial strength and high mechanical strength.
    Type: Application
    Filed: March 27, 2009
    Publication date: February 3, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Marc Leimenstoll, Sebastian Doerr, Christos Karafilidis, Peter Reichert
  • Publication number: 20110015291
    Abstract: Prepolymers, which are accessible from formamides of low molecular weight di- or triamines (formamide-terminated low molecular weight compounds) and di- or polyisocyanates, of the general formula (II): X—[—N(CHO)—CO—NH—R1—NCO]n ??(II) wherein X represents a linear or branched aliphatic, cycloaliphatic, heterocyclic and/or aromatic structural unit having 2 to 40 carbon atoms, and which is optionally further substituted and/or optionally comprises one or more heteroatoms, wherein R1 represents an organic radical which may optionally contain one or more heteroatoms and which may further contain one or more additional free isocyanate groups and/or one or more urethane, biuret, carbodiimide, isocyanurate, allophanate, iminooxadiazinedione and/or uretdione structural units, and wherein n?2; processes for making the same; compositions containing the same; and uses thereof
    Type: Application
    Filed: July 16, 2010
    Publication date: January 20, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Harald Blum, Evelyn Peiffer, Marc Leimenstoll
  • Publication number: 20100210748
    Abstract: The present invention relates to reactive polyurethane compositions having only small amounts of free, low molecular weight diisocyanates before and after crosslinking, and to the production thereof and the use thereof in reactive one- and two-component adhesives/sealants, bonding foams, encapsulating compounds and in flexible, rigid and integral foams.
    Type: Application
    Filed: January 15, 2010
    Publication date: August 19, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Marc Leimenstoll, Christos Karafilidis, Matthias Wintermantel, Peter Reichert, Lutz Brassat
  • Publication number: 20090247721
    Abstract: The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.
    Type: Application
    Filed: February 23, 2009
    Publication date: October 1, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Marc Leimenstoll, Burkhardt Koehler, Christos Karafilidis, Matthias Wintermantel