EP 0563638 B1 19980617 - Photographic recording material
Title (en)
Photographic recording material
Title (de)
Fotografisches Aufzeichnungsmaterial
Title (fr)
Matériau photographique d'enregistrement
Publication
Application
Priority
DE 4209346 A 19920323
Abstract (en)
[origin: EP0563638A1] Compounds of the formula I are suitable as light stabilizers for image dyes produced from pyrazoloazole couplers during the chromogenic development. <IMAGE> In the formula I: R<1> is H, a radical detachable under alkaline conditions, alkyl or aryl, R<2> is -OH, alkyl, aryl, alkoxy or <IMAGE> R<3>, R<4>, R<5> and R<6> are H, -OH, -COOH, -SO3H, -SO2H, alkyl, aryl, alkoxy, sulphonyl, sulphamoyl, acylamino or <IMAGE> at least one of the radicals R<2>, R<3>, R<4>, R<5> and R<6> being a radical of the formula <IMAGE> A is alkylene having 1-6 C atoms, N is 0 or 1, R<7> is H or optionally substituted alkyl, R<8> is optionally substituted alkyl, cycloalkyl or aryl having 4-20 C atoms, R<1> and R<3> can form a 5- or 6-membered ring, with R<2> = -H or alkoxy and R<2> and R<4> can form a 5- or 6-membered carbocyclic ring.
IPC 1-7
IPC 8 full level
G03C 7/38 (2006.01); G03C 7/30 (2006.01); G03C 7/392 (2006.01)
CPC (source: EP US)
G03C 7/301 (2013.01 - EP US); G03C 7/39232 (2013.01 - EP US)
Citation (examination)
EP 0542053 A1 19930519 - AGFA GEVAERT AG [DE]
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
EP 0563638 A1 19931006; EP 0563638 B1 19980617; DE 4209346 A1 19930930; DE 59308679 D1 19980723; JP H0643614 A 19940218; US 5340709 A 19940823
DOCDB simple family (application)
EP 93103858 A 19930310; DE 4209346 A 19920323; DE 59308679 T 19930310; JP 8516093 A 19930322; US 2881593 A 19930310