EP 0679941 A3 19970409 - Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes.
Title (en)
Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes.
Title (de)
Sulfo-substituierte Carboxylate als Puffer für photographische Bleich- und Bleichfixiermittel.
Title (fr)
Carboxylates sulfo-substitués comme tampons pour compositions photographiques de blanchiment et blanchiment-fixage.
Publication
Application
Priority
US 23026194 A 19940420
Abstract (en)
[origin: EP0679941A2] A composition for bleaching or bleach-fixing a silver halide photographic material comprising a bleaching agent and a sulfo-substituted carboxylate represented by Formula I (MO3S)n - R -(COOM)m (I> wherein R is a benzene ring or a straight, branched or cyclic saturated aliphatic group having 2 to 8 carbon atoms; M is hydrogen or an organic or inorganic cation; m is 1 to 7; and n is 1 to 7; with the proviso that if R is an aliphatic group, m and n combined cannot equal more than the number of carbon atoms in R plus two, and if R is a benzene ring, m and n combined cannot equal more than six.
IPC 1-7
IPC 8 full level
G03C 5/44 (2006.01); G03C 7/30 (2006.01); G03C 7/42 (2006.01)
CPC (source: EP)
G03C 5/44 (2013.01); G03C 7/3046 (2013.01); G03C 7/421 (2013.01); G03C 2200/15 (2013.01); G03C 2200/44 (2013.01)
Citation (search report)
- [X] WO 9311459 A1 19930610 - KODAK LTD [GB], et al
- [DX] US 4328306 A 19820504 - IDOTA YOSHIO, et al
- [A] US 5009985 A 19910423 - KUNITZ FRIEDRICH-WILHELM [DE], et al
- [DA] US 5061608 A 19911029 - FOSTER DAVID G [US], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0679941 A2 19951102; EP 0679941 A3 19970409; EP 0679941 B1 20040324; DE 69532734 D1 20040429; DE 69532734 T2 20040805; JP 3455323 B2 20031014; JP H07295174 A 19951110
DOCDB simple family (application)
EP 95105819 A 19950419; DE 69532734 T 19950419; JP 9370195 A 19950419