Cationic dyestuffs

US3971807A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventor

• Alfred Brack · Odenthal, DE

Key dates

• Filing date: Dec 6, 1974
• Grant date: Jul 27, 1976
• Expiry date: Dec 6, 1994

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/76
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Cationic dyestuffs of the formula ##SPC1## In which PA1 R represents an alkyl or alkenyl radical or an alkylene radical bonded to the -position of the naphthalene ring; PA1 R.sub.1 represents hydrogen, an alkyl or alkenyl radical or an alkylene radical bonded to the ring B in the 0-position; PA1 R.sub.2 represents hydrogen or an alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteryl radical; PA1 R.sub.3 represents an alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteryl radical or a disubstituted amino group or R.sub.2 and R.sub.3 conjointly represent the radical of a cyclic sulphonamide; PA1 A represents an alkylene radical with 2 to 4 C atoms and PA1 An .sup.(.sup.-) represents an anion And in which the cyclic and acyclic radicals can contain nonionic substituents and the ring B can contain a fused benzoring, are suitable for dyeing and printing of natural and synthetic materials especially acrylonitrile and acid modified polyesters and polyamides.