| 5525743 |
Preparation of anthraquinone imide compounds |
Udo Bergmann, Heike Kilburg, Reinhold Kohlhaupt, Matthias Niedenbrueck |
1996-06-11 |
| 5342950 |
Preparation of quinophthalone derivatives |
Gerhard Kilpper |
1994-08-30 |
| 5210190 |
Preparation of triazinyl-bis-anthraquinone dyes by reacting aryldihalotriazine with amino anthraquinone |
Reinhard Helwig, Gerhard Epple |
1993-05-11 |
| 5066820 |
Process for the preparation of 1-amino-2-carboxyanthraquinones |
Reinhard Helwig |
1991-11-19 |
| 4979684 |
Dispersion, comminution or deagglomeration and classification of solids |
Reinhard Polke, Norbert Scholz |
1990-12-25 |
| 4950756 |
Preparation of 1-nitroanthraquinone-2-carboxylic acid |
Jochem Henkelmann, Thomas-Michael Kahl, Gerhard Kilpper, Walter Maier |
1990-08-21 |
| 4916244 |
Preparation of 1-amino-4-hydroxy-2-(6'-hydroxyhexoxy)-anthraquinone |
— |
1990-04-10 |
| 4904796 |
Preparation of a blue anthraquinonoid disperse dye of 1,4-naphthoquinone-[2,]-phthalimides |
Eberhard Michaelis |
1990-02-27 |
| 4882095 |
Preparation of alkoxy(iso)violanthrenediones |
Reinhard Helwig |
1989-11-21 |
| 4824608 |
Preparation of C.I. Vat Blue 16 |
Reinhard Helwig |
1989-04-25 |
| 4431824 |
Preparation of 4,4',7,7'-tetrachlorothioindigo pigments of high color strength |
Heinrich Hiller |
1984-02-14 |
| 4332955 |
Preparation of transparent pigmentary forms of 4,4',7,7'-tetrachlorothioindigo |
Erwin Hahn, Heinrich Hiller |
1982-06-01 |
| 4323510 |
Brown vat dye and its preparation |
Heinrich Hiller |
1982-04-06 |
| 4298534 |
Preparation of brilliant, transparent pigmentary bromo-isoviolanthrone of high tinctorial strength |
Erwin Hahn, Heinrich Hiller |
1981-11-03 |
| 4286094 |
Preparation of a pigmentary form of perylene-3,4,9,10-tetracarboxylic acid diimide |
Heinrich Hiller |
1981-08-25 |
| 4217455 |
Preparation of transparent and easily dispersible perylene-3,4,9,10-tetracarboxylic acid diimide pigments of high tinctorial strength |
Heinrich Hiller |
1980-08-12 |
| 4189582 |
Process for upgrading the color value of 3,4,9,10-tetracarboxylic acid N,N'-bis-methylimide |
Heinrich Hiller |
1980-02-19 |
