Patents by Inventor Ulrike Ehe

Ulrike Ehe 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).

  • High-functionality polyisocyanates
    Patent number: 7339020
    Abstract: High-functionality polyisocyanates are prepared by a process which comprises (i) preparation of an addition product (A) which contains one group which is reactive toward isocyanate and at least two isocyanate groups by reacting (a) a diisocyanate or polyisocyanate I with (b1) compounds having at least three groups which are reactive toward isocyanate or (b2) compounds containing two groups which are reactive toward isocyanate or mixtures of (b1) and (b2), where at least one of the components (a) or (b) has functional groups having differing reactivities toward the functional groups of the other component and the reaction ratio is selected so that the addition product (A) contains an average of one group which is reactive toward isocyanate, (ii) if desired, intermolecular addition reaction of the addition product (A) to form a polyaddition product (P) containing an average of one group which is reactive toward isocyanate and an average of more than two isocyanate groups, and (iii) reaction of the addition
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: March 4, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Hans Renz, Rainer Königer, Ulrike Ehe, Ulrich Treuling, Rudolf Müller-Mall
  • Polyisocyanates
    Patent number: 6416686
    Abstract: Polyisocyanates are prepared by a process which comprises (i) preparation of an addition product (A) which contains one group which is reactive toward isocyanate and one isocyanate group by reacting (a) a diisocyanate I with (b) compounds containing two groups which are reactive toward isocyanate, where at least one of the components (a) or (b) has functional groups having differing reactivities toward the functional groups of the other component, (ii) if desired, intermolecular addition reaction of the addition product (A) to form a polyaddition product (P) which contains one group which is reactive toward isocyanate and one isocyanate group and (iii) reaction of the addition product (A) and/or the polyaddition product (P) with a diisocyanate or polyisocyanate II which is different from diisocyanate I.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: July 9, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Bruchmann, Hans Renz, Rainer Königer, Ulrike Ehe, Ulrich Treuling, Rudolf Müller-Mall
  • Dendritic and highly branched polyurethanes
    Patent number: 6376637
    Abstract: In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which are reactive toward isocyanates, at least one of the reactants contains functional groups having a different reactivity compared to the other reactant and the reaction conditions are selected so that only certain reactive groups react with one another in each reaction step.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Corporation
    Inventors: Bernd Bruchmann, Ulrike Ehe, Frank Wingerter, Konrad Stiefenhöfer, Ulrich Treuling
  • High-functionality polyisocyanates
    Publication number: 20020007036
    Abstract: High-functionality polyisocyanates are prepared by a process which comprises
    Type: Application
    Filed: March 19, 2001
    Publication date: January 17, 2002
    Inventors: Bernd Bruchmann, Hans Renz, Rainer Koniger, Ulrike Ehe, Ulrich Treuling, Rudolf Muller-Mall
  • Polyisocyanates
    Publication number: 20010025096
    Abstract: Polyisocyanates are prepared by a process which comprises
    Type: Application
    Filed: March 16, 2001
    Publication date: September 27, 2001
    Inventors: Bernd Bruchmann, Hans Renz, Rainer Koniger, Ulrike Ehe, Ulrich Treuling, Rudolf Muller-Mall