Patent ID: 6736888
Filing Date: 2004-05-18
Classification: C09B,C09D

Abstract:
A compound comprising a disazo chromophore and an optionally substituted heterocyclic group linked together through a â€”SO2â€”NHâ€” group wherein the nitrogen atom of the â€”SO2â€”NHâ€” group is attached to the heterocyclic group by means of a single covalent bond, said compound being represented be the following Formula (1):Aâ€”NHâ€”SO2â€”Bâ€”N&boxH;Nâ€”Dâ€”N&boxH;Nâ€”Eâ€ƒâ€ƒFormula (1) wherein:A is an optionally substituted heterocylic group; B and D are each independently optionally substituted phenylene or naphthylene; and E is optionally substituted naphthylene.