Patent ID: 6508872
Filing Date: 2003-01-21
Classification: C09D

Abstract:
An inkjet ink containing a vehicle and at least one colorant, said inkjet ink further containing at least one lightfast additive rendering inkjet inks more lightfast than without said additive, said lightfast additive comprising three moieties:Aâ€”Xâ€”Bâ€ƒâ€ƒ(I) where:moiety A is an aryl sulfonic acid or aryl carboxylic acid, either in acid form or salt form, with or without substituents; moiety X is â€”NRâ€” or â€”Oâ€”; wherein R is selected from the group consisting of H, an alkyl, a substituted alkyl, aryl and a substituted aryl; and moiety B is a triazine, benzotriazole, tetrazole, or benzimidazole, with or without substituents.