Basic rhodamine dyes

US4935059A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Mayer · Bischofswerda, DE
• Andreas Oberlinner · Ludwigshafen, DE

Key dates

• Filing date: Jun 15, 1989
• Grant date: Jun 19, 1990
• Expiry date: Jun 15, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B11/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Basic rhodamine dyes suitable for use in recording fluids for the ink jet process and for coloring paper stock have the formula ##STR1## where L is C.sub.2 -C.sub.10 -alkylene, PA0 R.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen, substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or C.sub.5 -C.sub.7 -cycloalkyl or R.sup.1 and R.sup.2 together with the nitrogen atom linking them together are a hetero cyclic radical, PA0 An.sup..crclbar. is one equivalent of an anion and m and n are each independently of the other 0 or 1.