| 摘要 |
Chromogenic quinazolines of the formula <IMAGE> (1) wherein Y is an amino-substituted phenyl radical of the formula <IMAGE> (1a) or a 3-carbazolyl radical of the formula <IMAGE> (1b) and Z is hydrogen, R1, -OR1', -SR1' or -NR2R3, These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and give lightfast yellow, orange and red colorations. |
