EP 0056157 A1 19820721 - Use of 7-hydroxy-coumarin compounds for impregnating paper.
Title (en)
Use of 7-hydroxy-coumarin compounds for impregnating paper.
Title (de)
Verwendung von 7-Hydroxy-cumarin-Verbindungen zum Imprägnieren von Papier.
Title (fr)
Utilisation de composés 7-hydroxy-coumarine pour l'imprégnation du papier.
Publication
Application
Priority
DE 3100295 A 19810108
Abstract (en)
[origin: US4411946A] 7-Hydroxy-coumarin compounds of the general formula <IMAGE> wherein A represents a heterocyclic radical, which can contain non-ionic substituents customary in dye-stuff chemistry, R represents hydrogen or cyano and Z represents oxygen or NH and the ring B can be further substituted non-ionically, are used for impregnating paper, in particular paper which has to be made forgery-proof.
Abstract (de)
7-Hydroxy-cumarin-Verbindungen der allgemeinen Formel <IMAGE> worin A für einen heterocyclischen Rest, der in der Farbstoffchemie übliche nichtionogene Substituenten enthalten kann, R für Wasserstoff oder Cyan und Z für Sauerstoff oder NH stehen und der Ring B nichtionisch Weiter substituiert sein kann, finden Verwendung zum Imprägnieren von Papier, insbesondere von fälschungssicher zu machendem Papier.
IPC 1-7
IPC 8 full level
B44F 1/12 (2006.01); D21H 21/28 (2006.01); D21H 21/30 (2006.01); D21H 21/46 (2006.01)
CPC (source: EP US)
D21H 21/28 (2013.01 - EP US); D21H 21/30 (2013.01 - EP US); D21H 21/46 (2013.01 - EP US); Y10S 428/915 (2013.01 - EP US); Y10S 428/916 (2013.01 - EP US)
Citation (search report)
- EP 0027529 A1 19810429 - BASF AG [DE]
- FR 2410702 A1 19790629 - TULLIS RUSSELL CO LTD [GB]
Designated contracting state (EPC)
CH DE FR GB
DOCDB simple family (publication)
EP 0056157 A1 19820721; EP 0056157 B1 19850529; DE 3100295 A1 19820805; DE 3170783 D1 19850704; US 4411946 A 19831025
DOCDB simple family (application)
EP 81110811 A 19811229; DE 3100295 A 19810108; DE 3170783 T 19811229; US 33351781 A 19811222