Malonic acid dyes and polycondensation products thereof

US5162545A · kind A · utility

Assignee

• BASF SE

Inventors

• Karl-Heinz Etzbach · Bischofswerda, DE
• Karin H. Beck · Ludwigshafen, DE
• Gerhard Wagenblast · Wachenheim, DE

Key dates

• Filing date: Oct 12, 1990
• Grant date: Nov 10, 1992
• Expiry date: Oct 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/6856
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Malonic acid dyes capable of forming polycondensation products have the formula ##STR1## where R.sup.1 and R.sup.2 are each independently of the other hydroxyl, C.sub.1 -C.sub.6 -alkoxy, chlorine or bromine, PA0 R.sup.3 is hydrogen or C.sub.1 -C.sub.6 -alkyl, PA0 A is C.sub.1 -C.sub.20 -alkylene which may be interrupted by oxygen atoms or by imino or C.sub.1 -C.sub.4 -alkylimino groups, and PA0 Chr is the radical of a chromophore derived from an anthraquinone, perylene, disazo or trisazo dye or else, when R.sup.3 is C.sub.1 -C.sub.6 -alkyl, from a monoazo dye.