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Inventor: Westphal; Jochen
Address: Dusseldorf, DE
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4978747 |
Colorants obtained by reacting a NH.sub.2 -containing dyestuff with a diisocyanate followed by r |
December 18, 1990 |
| Colorants are obtained by reacting a dyestuff which is free from ionic groups and has.gtoreq.2 NH.sub.2 groups which are preferably arranged in such a manner that they do not participate in the resonance of the chromophore with such an amount of a (cyclo)aliphatic diisocyante so as to |
| 4670548 |
Sulfo-group-containing trisazo dyestuffs |
June 2, 1987 |
| Water-soluble dyestuffs of the formulawhereinA denotes sulphophenyl or sulphonaphthyl, which are optionally further substituted,B denotes sulpho-1,4-naphthylene, which is optionally further substituted,C denotes 1,4-phenylene or 1,4-naphthylene, which are optionally further substituted, andK |
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