| 摘要 |
The invention relates to bisquinazolines of the formula <IMAGE> (1) wherein the ring A is unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl, Q is an aliphatic radical with a molecular weight of 28 to 450, or is a cycloaliphatic or araliphatic radical, Y is the radical of the formula (2a) <IMAGE> (2a) or of the formula <IMAGE> (2b) wherein B, D, X1, X2, X3 and Z are as hereinafter defined. These compounds are particularly suitable as colour formers in pressure-sensitive or heat-sensitive recording materials and give strong yellow or orange colours of excellent fastness to light, especially fastness to sublimation.
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