Bichromophoric methine and azamethine dyes and process for transferring them

US5132438A · kind A · utility

Assignee

• BASF SE

Inventors

• Volker Bach · Neustadt, DE
• Karl-Heinz Etzbach · Bischofswerda, DE
• Ruediger Sens · Mannheim, DE

Key dates

• Filing date: Feb 4, 1991
• Grant date: Jul 21, 1992
• Expiry date: Feb 4, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M5/39
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Bichromophoric methine and azamethine transfer dyes have the formula EQU Z.sup.2 --Z.sup.1 --LY.sup.1 --Y.sup.2 where PA0 L is a bridge member which does not permit any conjugation of .pi.-electrons between Z.sup.1 and Y.sup.1, PA0 Y.sup.1 and Z.sup.1 are each independently of the other aminophenylene, which may be benzofused, or heterocyclyl and PA0 Y.sup.2 and Z.sup.2 are each independently of the other benzoquinoeiminyl, which may be benzofused, or heterocyclyl.