| 5455352 |
Preparation of N-(2-hydroxyethyl)-piperazine |
Michael Huellmann, Rainer Becker |
1995-10-03 |
| 4567303 |
Process and apparatus for preparing or reacting alkanolamines |
Guenter Boettger, Hans Hammer, Otto Hertel, Gerhard Jeschek, Herbert Mueller +1 more |
1986-01-28 |
| 4450045 |
Preparation of water-soluble, nitrogen-containing condensates and their use in papermaking |
Otto Hertel, Friedrich Linhart |
1984-05-22 |
| 4371674 |
Water soluble crosslinked ethyleneimine grafted polyamidoamine |
Otto Hertel, Jaroslav Melzer, Rolf Fikentscher |
1983-02-01 |
| 4328142 |
Preparation of water-soluble condensates and their use as crosslinking agents for the preparation of papermaking aids |
Otto Hertel, Jaroslav Melzer |
1982-05-04 |
| 4277422 |
Vulcanization activator |
Herbert Mueller, Gerhard Paulus, Hubert Schoeppl |
1981-07-07 |
