| 摘要 |
<p>PURPOSE:To obtain the titled novel composition colorless under visible rays, but luminescent red on irradiation of ultraviolet light, to be utilized for prints, writing utensils, etc., by incorporating base ink with a specific europium complex. CONSTITUTION:The objective composition can be obtained by incorporating (A) base ink with (B) pref. 0.01-1wt.% of a compound of formula (R1 and R2 are each H, halogen, alkyl, alkoxy, amino, dialkylamino, alkylamino, aryl or aralkyl) [e.g., tris(benzoyltrifluoracetone)europium complex, tris(p-methyl benzoyltrifluoracetone)europium complex dihydrate].</p> |
