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Preparation of perylen-3,4:9,10-tetracarboxylic dianhydride and also of naphtalene-1,8-dicarboximides |
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| 7393956 |
Method for the production of perylen-3,4:9,10-tetracarboxylic acid diimides and perylen-3,4:9,10-tetracarboxylic acid dianhydride and naphtalene-1,8-dicarboxylimides |
Felix Mueller, Arno Boehm, Willi Helfer, Volker Weyrauch, Georg Henning |
2008-07-01 |
| 5445727 |
Production of nickelized shaped articles |
Volker Schwendemann, Klaus Glaser, Chung-Ji Tschang, Bernd Burkhart, Alfred Oftring |
1995-08-29 |
| 5421990 |
Production of shining shaped articles coated with zinc or a zinc alloy |
Erwin Hahn, Bernd Burkhart, Chung-Ji Tschang |
1995-06-06 |
| 5286401 |
Use of heterocyclic compounds as bleach activators or optical brighteners in washing and cleaning agents |
Wolfgang Trieselt, Erwin Hahn, Johannes Perner, Alfred Oftring |
1994-02-15 |
