EP 0548313 B1 19970716 - MAGENTA IMAGE-DYE COUPLERS OF IMPROVED HUE
Title (en)
MAGENTA IMAGE-DYE COUPLERS OF IMPROVED HUE
Title (de)
MAGENTA BILDFARBSTOFF-KUPPLER MIT VERBESSERTEM FARBTON
Title (fr)
COPULANTS A TEINTE AMELIOREE FORMANT DES COLORANTS MAGENTA POUR IMAGES
Publication
Application
Priority
- US 9203393 W 19920423
- US 73167191 A 19910717
Abstract (en)
[origin: WO9302392A1] A photographic element and process provide a magenta coupler of formula (I) wherein (a) at least one of X1, X2 and R1 and at least one of R2 and R3 is a substituent individually selected from carbamoyl, alkoxycarbonyl, aryloxycarbonyl, sulfamoyl, alkylsulfonyl, arylsulfonyl, alkoxysulfonyl, aryloxysulfonyl, alkylsulfoxyl, arylsulfoxyl, acyloxy, cyano, nitro, and trifluoromethyl; (b) the substituents X1, X2, R1, R2 and R3 not selected from the (a) group may be selected from alkyl, alkoxy, aryloxy, acylamino, alkylthio, arylthio, sulfonamido, alkylureido, arylureido, alkoxycarbonylamino, aryloxycarbonylamino, and halogen and in the case of R3 hydrogen; (c) substituents R1 and R2 are para or meta to the carbon attached to the nitrogen atom; (d) a and b are 1 to 3; (e) Q is an alkylthio or arylthio coupling-off group. The element provides a deeper magenta hue and reduced blue absorption by the resulting magenta dye.
IPC 1-7
IPC 8 full level
G03C 1/00 (2006.01); G03C 7/24 (2006.01); G03C 7/305 (2006.01); G03C 7/384 (2006.01)
CPC (source: EP)
G03C 7/24 (2013.01); G03C 7/30517 (2013.01); G03C 7/384 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 9302392 A1 19930204; DE 69220905 D1 19970821; DE 69220905 T2 19990121; EP 0548313 A1 19930630; EP 0548313 B1 19970716; JP H06501786 A 19940224
DOCDB simple family (application)
US 9203393 W 19920423; DE 69220905 T 19920423; EP 92914038 A 19920423; JP 50276793 A 19920423