| 7230130 |
Process for preparing methylenedianiline and methylenebis (phenylisocyanate) |
Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more |
2007-06-12 |
| 6900348 |
Light isocyanates, method for producing them and use thereof |
Martin Reif, Peter van den Abeel, Filip Nevejans, Hans Volkmar Schwarz, Ulrich Penzel |
2005-05-31 |
| 6831192 |
Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) |
Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more |
2004-12-14 |
| 6576788 |
METHOD FOR PRODUCING MIXTURES CONSISTING OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYLENE-POLYMETHYLENE-POLYISOCYANATES CONTAINING A REDUCED AMOUNT OF CHLORINATED SECONDARY PRODUCTS AND WITH A REDUCED IODINE COLOR INDEX |
Ulrich Penzel, Dieter Starosta, Hilmar Boesel, Eckhard Ströfer, Joachim Pfeffinger +8 more |
2003-06-10 |
| 6433219 |
Method for the production of methylenedi(phenylamine and methylenedi(phenyl isocyanate) |
Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more |
2002-08-13 |
