Rhodamine dyes

US4647675A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Jul 11, 1985
• Grant date: Mar 3, 1987
• Expiry date: Jul 11, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Novel compounds of the general formula I ##STR1## where A.sup..crclbar. is an anion, R is hydrogen or unsubstituted or substituted alkyl or cycloalkyl, R.sup.1 and R.sup.2 independently of one another are each hydrogen or unsubstituted or substituted alkyl or cycloalkyl, or one of the radicals may furthermore be aryl, or R.sup.1 and R.sup.2, together with the nitrogen atom, form a saturated heterocyclic structure, the radicals R.sup.3 independently of one another are each hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.4 and R.sup.5 independently of one another are each unsubstituted or substituted alkyl or cycloalkyl, or one of the radicals may furthermore be hydrogen, aryl or hetaryl, R.sup.4 and R.sup.5, together with the nitrogen atom, form a saturated heterocyclic structure, n is 1, 2 or 3, X is hydrogen, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or nitro and Y is hydrogen or chlorine, are particularly useful for dyeing paper stocks.