Patents by Inventor Jürgen Köcher

Jürgen Köcher 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).

  • TCD BASED HYDROPHILIC POLYURETHANE DISPERSIONS
    Publication number: 20120083537
    Abstract: The present invention relates to a polyurethaneurea solution having a polyurethaneurea having a structural unit of the formula (I) and terminated with at least one copolymer unit of the group consisting of a polyethylene oxide, a polypropylene oxide, and mixtures thereof.
    Type: Application
    Filed: August 22, 2009
    Publication date: April 5, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Christian Wamprecht
  • TCB BASED HYDROPHILIC POLYURETHANE DISPERSIONS
    Publication number: 20110160310
    Abstract: The present invention relates to a polyurethaneurea dispersion including a polyurethaneurea which is terminated with at least one polyethylene oxide- and polypropylene oxide-based copolymer unit, and includes a polycarbonate polyol-based unit of formula (I)
    Type: Application
    Filed: August 22, 2009
    Publication date: June 30, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Christian Wamprecht
  • HYDROPHILIC POLYURETHANE COATINGS
    Publication number: 20110077310
    Abstract: The present invention relates to the use of specific polyurethane coatings, wherein the polyurethane urea is terminated by a copolymer unit of polyethylene oxide and polypropylene oxide.
    Type: Application
    Filed: May 19, 2009
    Publication date: March 31, 2011
    Applicant: Bayer Material Science AG
    Inventor: Juergen Koecher
  • HYDROPHILIC POLYURETHANE COATINGS
    Publication number: 20110078832
    Abstract: The present invention relates to a coating composition in the form of a dispersion containing a polyurethane urea which (1) is terminated by a copolymer unit of polyethylene oxide and polypropylene oxide, and (2) contains at least one hydroxyl-group-containing polycarbonate polyol.
    Type: Application
    Filed: May 19, 2009
    Publication date: March 31, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Thorsten Rische
  • HYDROPHILIC POLYURETHANE DISPERSIONS
    Publication number: 20110021696
    Abstract: The present invention relates to a polyurethane urea dispersion, wherein the polyurethane urea (1) is terminated with a copolymer unit of polyethylene oxide and polypropylene oxide, and (2) at least one polycarbonate polyol comprising at least one hydroxyl group.
    Type: Application
    Filed: March 16, 2009
    Publication date: January 27, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Thorsten Rische
  • HYDROPHILIC POLYURETHANE SOLUTIONS
    Publication number: 20110021657
    Abstract: The present invention relates to a coating compound comprising at least one polyurethane urea terminated with a copolymerized unit of polyethylene oxide and polypropylene oxide.
    Type: Application
    Filed: March 16, 2009
    Publication date: January 27, 2011
    Applicant: Bayer MaterialScience AG
    Inventor: Jürgen Köcher
  • MEDICAL DEVICE HAVING HYDROPHILIC COATINGS
    Publication number: 20110022005
    Abstract: The present invention relates to a medical device having a coating comprising at least one polyurethaneurea, wherein the coating comprises at least one polyurethane urea terminated with a copolymer unit of polyethyloxide and polypropyloxide.
    Type: Application
    Filed: March 16, 2009
    Publication date: January 27, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventor: Jürgen Köcher
  • MEDICAL DEVICE HAVING HYDROPHILIC COATINGS
    Publication number: 20110015724
    Abstract: The present invention relates to a medical device having a coating comprising at least one polyurethane urea, wherein the coating comprises at least one polyurethane urea terminated with a copolymer unit of polyethyloxide and polypropyloxide.
    Type: Application
    Filed: March 16, 2009
    Publication date: January 20, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Thorsten Rische
  • POLYURETHANE UREA SOLUTIONS
    Publication number: 20100009582
    Abstract: The present invention relates to polyurethane ureas dissolved in organic solvents, which may be used as an adhesive coat for the coating of textiles.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 14, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Jüergen Köcher, Thorsten Rische, Juergen Urban, Eva Urban, Anne Urban, Holger Casselmann, Thomas Feller
  • AQUEOUS SILVER-CONTAINING NONIONIC POLYURETHANE DISPERSIONS
    Publication number: 20090253848
    Abstract: The present invention relates to an aqueous dispersion comprising at least one nonionically stabilized polyurethaneurea and at least one silver-containing constituent.
    Type: Application
    Filed: June 22, 2009
    Publication date: October 8, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Juergen Koecher, Stefanie Eiden, Anke Mayer-Bartschmid, Igor Knezevic
  • MEDICAL DEVICES WITH AN ANTIBACTERIAL POLYURETHANEUREA COATING
    Publication number: 20090252804
    Abstract: The present invention relates to a medical device which has at least one coating which is obtained starting from an aqueous dispersion, the aqueous dispersion comprising at least one nonionically stabilized polyurethaneurea and at least one silver-containing constituent.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 8, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Juergen Koecher, Stefanie Eiden, Anke Mayer-Bartschmid, Igor Knezevic
  • Polyurethane urea solutions
    Patent number: 7425516
    Abstract: This invention relates to solutions of polyurethaneureas in ?-butyrolactone or mixtures of ?-butyrolactone with toxicologically acceptable organic solvents. A process for coating substrates using these polyurethaneurea solutions, and substrates coated by said process are also provided. The substrates coated according to the invention are preferably textile products or leather, but materials such as wood or concrete can also be coated according to the invention.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: September 16, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Gerald Kurek, Holger Casselmann, Jürgen Urban, Thomas Feller
  • Catalysts for selective isocyanate dimerization
    Patent number: 7317112
    Abstract: A method of dimerizing isocyanates using sulphonamide anions as a dimerization catalyst for the isocyanates and also to a process for preparing oligomeric isocyanates using such catalysts.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: January 8, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Hans-Josef Laas
  • Isocyanates containing uretdione groups
    Patent number: 7098289
    Abstract: The invention relates to novel compounds containing uretdione groups, to a process for preparing them by dimerizing aliphatic and/or cycloaliphatic isocyanates containing exclusively secondary and/or tertiary isocyanate groups and also to the use of uretdione polyisocyanates obtainable by this process from diisocyanates containing exclusively secondary and/or tertiary isocyanate groups as a starting component for polyurethane polymers, in particular as an isocyanate component in the preparation of uretdione powder coating crosslinkers.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: August 29, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Reinhard Halpaap, Frank Richter, Jürgen Köcher
  • Optically active diamines and their use in catalytic processes
    Patent number: 7064231
    Abstract: The invention relates to stereoisomerically enriched diamines, to metal complexes comprising these diamines and also to their use in a process for asymmetrically reducing ketones using silanes, in particular polymethylhydrosiloxane, as reducing agents.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: June 20, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventor: Jürgen Köcher
  • Sulfonamide anions as catalysts for NCO oligomerization
    Patent number: 7060817
    Abstract: The present invention relates to the use of sulphonamide salts as catalysts for oligomerizing isocyanates and also to a process for NCO oligomerization using the catalysts of the invention.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: June 13, 2006
    Assignee: Bayer MaterialScience AG
    Inventors: Jürgen Köcher, Reinhard Halpaap
  • Method for producing polyisocyanates
    Patent number: 7030266
    Abstract: The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from a five-membered N-heterocycles and the N-heterocycle comprises at least one N—H function in the five-membered ring, to the products produced in this way and to polymers prepared from these products.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 18, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jürgen Köcher, Frank Richter, Hans-Josef Laas, Matthias Wintermantel
  • Method of dimerizing isophorone diisocyanate
    Patent number: 6797800
    Abstract: The invention relates to a method of preparing a polyisocyanate with at least one uretdione group by oligomerizing part of the isocyanate groups of isophorone diisocyanate in the presence of a catalyst which accelerates the dimerization of isocyanate groups, wherein the oligomerization catalyst comprises a saline compound comprising from 10 to 100 wt. % of 1,2,3- and/or 1,2,4-triazolate structures (calculated as C2N3; molecular weight=66) in the anion, and the products prepared by this method.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: September 28, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Laas, Reinhard Halpaap, Frank Richter, Jürgen Köcher
  • Method of preparing aliphatic polyisocyanates with uretdione, isocyanurate and iminooxadiazindione structures
    Patent number: 6590098
    Abstract: The invention relates to a method of preparing an aliphatic polyisocyanate by conversion of an aliphatic diisocyanate to a polyisocyanates in the presence of a catalyst, wherein the catalyst contains a saline compound having 5 to 97.1 wt. % of a 1,2,3- and/or a 1,2,4-triazolate (calculated as C2N3, molecular weight 66) in the anion, the isocyanates thus prepared and the polyurethane paints and coatings containing them.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: July 8, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Frank Richter, Reinhard Halpaap, Jürgen Köcher, Hans-Josef Laas