GB2143542A — Chromogenic quinazolones

USPTO Abstract

New chromogenic quinazolones are of formula <IMAGE> wherein Y is a polycyclic non-aromatic heterocyclic radical which is attached to the quinazolone moiety through a fused benzene nucleus and is unsubstituted or substituted. and Z is hydrogen, alkyl which is unsubstituted or substituted by halogen, hydroxy, cyano or lower alkoxy, or is cycloalkyl, phenyl, benzyl, or phenyl or benzyl which are each substituted by halogen, nitro, cyano, lower alkyl, lower alkoxy or lower alkoxycarbonyl, and the ring A is unsubstituted or substituted by halogen, cyano, nitro, lower alkyl, lower alkoxy or lower alkoxycarbonyl. These compounds are particularly suitable colour formers in pressure-sensitive or heat-sensitive recording materials and produce strong greenish yellow colorations of excellent fastness to light and sublimation.