| 9115049 |
Process for obtaining pure aniline |
Koenraad VANDEWALLE, Karen Vercruysse, Leo Denissen, Hendrik DE WINNE, Bart Van De Voorde +2 more |
2015-08-25 |
| 7819949 |
Process for extracting (chlorinated) hydrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene |
Martin Sesing, Heiner Schelling, Juergen Ciprian, Martin Karches, Olga Schubert |
2010-10-26 |
| 7709679 |
Process for simultaneously preparing 4,4′-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates |
Michael Bock, Hans-Juergen Pallasch, Johnny Moors |
2010-05-04 |
| 7584629 |
Separation of a substance mixture consisting of hydrogen chloride and phosgene |
Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch +3 more |
2009-09-08 |
| 7524405 |
Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent |
Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch +3 more |
2009-04-28 |
| 7408083 |
Method for the production of diaminodiarylmethanes |
Ulrich Steinbrenner, Eckhard Stroefer, Martin Sohn, Veronika Quaschning, Helmut Moehwald +3 more |
2008-08-05 |
| 6916953 |
Integrated process for preparing isocyanates |
Christian Walsdorff, Martin Fiene, Eckhard Ströfer, Klaus Harth, Jan Jacobs |
2005-07-12 |
| 6350906 |
Continuous recovery of (meth)acrylic acid |
Otto Machhammer, Peter Zehner |
2002-02-26 |
