Bichromorphic methine and azamethine dyes and process for transferring them

US5281572A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Nov 5, 1992
• Grant date: Jan 25, 1994
• Expiry date: Nov 5, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/914
• 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 wherein PA1 L is a bridge member which does not permit any conjugation of .pi.-electrons between Z.sup.1 and Y.sup.1, PA1 Y.sup.1 and Z.sup.1 are each independently of the other aminophenylene, which may be benzofused, or heterocyclyl and PA1 Y.sup.2 and Z.sup.2 are each independently of the other benzoquinoneiminyl, which may be benzofused, or heterocyclyl.