EP 0060468 B1 19841003 - PROCESS FOR THE DYEING OF PAPER AND DYED PAPER
Title (en)
PROCESS FOR THE DYEING OF PAPER AND DYED PAPER
Publication
Application
Priority
DE 3110223 A 19810317
Abstract (en)
[origin: US4411669A] Cationic azo dyestuffs of the formula <IMAGE> (I) wherein X(+) denotes an ammonium group, m denotes 0 or 1, R denotes hydrogen, halogen, C1- to C4-alkyl, C1- to C4-alkoxy, hydroxyl, amino, sulphonamido and carboxamido, or acylamino which is optionally substituted by halogen or a quaternary group, R1 denotes hydrogen, C1- to C4-alkyl, halogen or C1- to C4-alkoxy, R2 and R3 independently of one another denote hydrogen, C1- to C4-alkyl, C1- to C4-alkoxy or acylamino, and An(-) denotes an anion, and wherein the azo group and hydroxyl group of ring a are located adjacent to one another and further carbocyclic or heterocyclic rings can be fused to ring a, are used for dyeing paper.
IPC 1-7
IPC 8 full level
D21H 21/28 (2006.01)
CPC (source: EP US)
D21H 21/28 (2013.01 - EP US); Y10S 8/919 (2013.01 - US)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0060468 A1 19820922; EP 0060468 B1 19841003; DE 3110223 A1 19820930; DE 3260864 D1 19841108; US 4411669 A 19831025
DOCDB simple family (application)
EP 82101762 A 19820306; DE 3110223 A 19810317; DE 3260864 T 19820306; US 35272282 A 19820226