| 10538478 |
Catalyst modification with alkali metal, alkaline earth metal or rare earth metal ions in the continuous liquid-phase hydrogenation of nitro compounds |
Armin LANGE DE OLIVEIRA, Barbara Wucher, Christian Bechtold, Michael FRIKO |
2020-01-21 |
| 9688606 |
Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acid |
Samuel Neto, Rüdiger Fritz, Holger Allardt, Yuan Shen Dai, Barbara BECKER +5 more |
2017-06-27 |
| 9630866 |
Process for workup of NOx-containing offgases from wastewater streams of nitration plants |
Ruediger Fritz, Michael Zoellinger, Holger Allardt, Reiner Reetz |
2017-04-25 |
| 9428441 |
Method for removing HCN from crude dinitro toluene |
Yuan Shen Dai, Katharina Spuhl |
2016-08-30 |
| 9249083 |
Process for scrubbing dinitrotoluene |
Samuel Neto, Ruediger Fritz, Holger Allardt, Barbara BECKER, Julia Leschinski +4 more |
2016-02-02 |
| 8529771 |
Acidic sludge adsorption of DNT wastewaters |
Ruediger Fritz, Michael Zoellinger, Anne-Kathrin Merten, Doris Zschieschang, Ina Homann +4 more |
2013-09-10 |
| 6495652 |
Prepolymers containing isocyanate groups and a method for the production thereof |
Michael Reichelt, Udo Rotermund, Peter Falke, Peter von Malotki, Holger Seifert |
2002-12-17 |
| 6284812 |
Thermally stable rigid foams based on isocyanate and having low brittleness and low thermal conductivity |
Udo Rotermund, Holger Seifert, Werner Schmiade |
2001-09-04 |
| 6274642 |
Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate |
Udo Rotermund, Anja Biedermann, Werner Wiegmann, Marion Heinz |
2001-08-14 |
| 6063824 |
Microcellular urea-containing polyurethane elastomer |
Ruediger Krech, Udo Rotermund, Heinz Bollmann, Wolfgang Scholz, Manfred Genz |
2000-05-16 |
| 6037383 |
Microcellular polyurethane elastomer containing urea groups |
Ruediger Krech, Udo Rotermund, Heinz Bollmann, Wolfgang Scholz, Manfred Genz |
2000-03-14 |
| 5916480 |
Storage-stable emulsions for producing fine-celled rigid foams based on isocyanate |
Udo Rotermund, Marion Heinz, Anja Biedermann, Werner Wiegmann |
1999-06-29 |
| 5895792 |
Production of rigid polyurethane foams |
Udo Rotermund, Holger Seifert, Werner Wiegmann |
1999-04-20 |
| 5684092 |
Production of rigid foams based on isocyanate |
Holger Seifert, Gottfried Knorr, Udo Rotermund |
1997-11-04 |
| 5624969 |
Production of rigid foams based on isocyanate |
Holger Seifert, Gottfried Knorr, Udo Rotermund |
1997-04-29 |
