EP 0460008 B1 19960605 - THE USE OF PYRAZOLO-TRIAZOLE PHOTOGRAPHIC COLOUR COUPLERS

Title (en)

THE USE OF PYRAZOLO-TRIAZOLE PHOTOGRAPHIC COLOUR COUPLERS

Title (de)

VERWENDUNG PYRAZOLTRIAZOL-FOTOGRAFISCHER FARBKUPPLER

Title (fr)

EMPLOI DE COUPLEURS DE COULEUR PHOTOGRAPHIQUES DE PYRAZOLO-TRIAZOLE

Publication

EP 0460008 B1 19960605 (EN)

Application

EP 90903197 A 19900214

Priority

GB 9000232 W 19900214
GB 8904004 A 19890222

Abstract (en)

[origin: WO9010253A1] The use of 1H-pyrazolo[1,5-b]-1,2,4-triazole couplers containing a tertiary carbon group on the coupler nucleus in photographic silver halide materials of which the halide comprises more than 80 % chloride, in order to improve raw stock stability (shelf life).

IPC 1-7

G03C 7/384; G03C 7/26

IPC 8 full level

G03C 1/035 (2006.01); G03C 7/38 (2006.01)

CPC (source: EP)

G03C 7/3835 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI LU NL SE

DOCDB simple family (publication)

WO 9010253 A1 19900907; AT E139043 T1 19960615; DE 69027309 D1 19960711; EP 0460008 A1 19911211; EP 0460008 B1 19960605; GB 8904004 D0 19890405; JP H0354554 A 19910308

DOCDB simple family (application)

GB 9000232 W 19900214; AT 90903197 T 19900214; DE 69027309 T 19900214; EP 90903197 A 19900214; GB 8904004 A 19890222; JP 3753790 A 19900220