| 摘要 |
Basic rhodamine dyes suitable for use in recording fluids for the ink jet process and for coloring paper stock have the formula <IMG> where L is C2-C10-alkylene, R1, R2 and R3 are each independently of the others hydrogen, substituted or unsubstituted C1-C10-alkyl or C5-C7-cycloalkyl or R1 and R2 together with the nitrogen atom linking them together are a hetero cyclic radical, An~ is one equivalent of an anion and m and n are each independently of the other 0 or 1.
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