EP 0356898 B1 19961127 - Silver halide photographic materials containing aryl hydrazides
Title (en)
Silver halide photographic materials containing aryl hydrazides
Title (de)
Arylhydrazide enthaltende photographische Silberhalogenidmaterialien
Title (fr)
Matériaux photographiques aux halogénures d'argent contenant des arylhydrazides
Publication
Application
Priority
- DE 3829078 A 19880827
- DE 3921134 A 19890628
Abstract (en)
[origin: JPH02120736A] PURPOSE: To rapidly form an ultrahigh contrast dot image at a relatively low pH by adding specified arylhydrazide. CONSTITUTION: An emulsion layer or other hydrophilic colloidal layer of this element contains arylhydrazide represented by formula I wherein Ar is substd. phenyl or (un)substd. aryl, G is CO, SO, etc., X<+> is a group contg. a cationic group, each of R and R<1> is H, 1-6C alkyl, etc., and A<-> is an anion. Arylhydrazide represented by formula II is preferably used as the component represented by the formula I. In the formula II, each of R1 -R5 is H, 1-20C alkyl, etc., Q<+> is trialkylammonium, pyridinium-1-yl, etc., B is a crosslinking group consisting of l-3 methylene groups and A<-> is an anion. A compd. represented by formula III may be used as the component represented by formula II.
IPC 1-7
G03C 1/10; C07D 243/34; C07D 213/20; C07D 213/86; C07D 213/34; C07D 277/10; C07D 213/65; C07C 243/34
IPC 8 full level
C07C 243/34 (2006.01); C07D 213/20 (2006.01); C07D 213/34 (2006.01); C07D 213/56 (2006.01); C07D 213/63 (2006.01); C07D 213/65 (2006.01); C07D 213/81 (2006.01); C07D 213/86 (2006.01); C07D 243/34 (2006.01); C07D 277/10 (2006.01); C07D 277/20 (2006.01); C07D 277/30 (2006.01); C09B 57/00 (2006.01); G03C 1/06 (2006.01); G03C 1/10 (2006.01)
CPC (source: EP US)
G03C 1/061 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0356898 A2 19900307; EP 0356898 A3 19910807; EP 0356898 B1 19961127; DE 58909752 D1 19970109; JP H02120736 A 19900508; JP H0650373 B2 19940629; US 4937160 A 19900626; US 5013844 A 19910507; US 5130480 A 19920714
DOCDB simple family (application)
EP 89115534 A 19890823; DE 58909752 T 19890823; JP 21875989 A 19890828; US 39365189 A 19890814; US 45100089 A 19891215; US 64800491 A 19910130