EP 0274723 B1 19901031 - FILTER DYE FOR PHOTOGRAPHIC ELEMENT
Title (en)
FILTER DYE FOR PHOTOGRAPHIC ELEMENT
Publication
Application
Priority
- US 10446887 A 19871005
- US 94563486 A 19861223
Abstract (en)
[origin: EP0274723A1] Dyes having the structure <CHEM> wherein A represents a substituted or unsubstituted acidic nucleus having a carboxyphenyl substituent selected from the group consisting of 2-pryazolin-5-ones free of any substituent bonded thereto through a carboxyl group, rhodanines, hydantoins, 2-thiohydantoins, 4-thiohydantoins, 2,4-oxazolidindiones, 2-thio-2,4-oxazolidindiones, isoxazolinones, barbituric, 2-thiobarbiturics, and indandiones, R represents hydrogen, substituted or unsubstituted alkyl of 1 to 4 carbon atoms, or benzyl, R<1> and R<2> each independently represents substituted or unsubstituted alkyl or aryl, or taken together with R<5>, R<6>, N, and the carbon atoms to which they are attached, represent the atoms needed to complete a julolydyl ring, R<3> represents H, or substituted or unsubstituted alkyl or aryl, R<5> and R<6> each independently represents H, or R<5> taken together with R<1>, or R<6> taken together with R<2>, represent the atoms necessary to complete a carbocyclic ring, and m is 0 or 1 are disclosed. The dyes are useful as filter dyes in photographic filter layers.
IPC 1-7
IPC 8 full level
C09B 23/00 (2006.01); C09B 23/14 (2006.01); G03C 1/825 (2006.01); G03C 1/83 (2006.01); G03C 5/16 (2006.01)
CPC (source: EP)
G03C 1/832 (2013.01); G03C 5/16 (2013.01); G03C 2001/7448 (2013.01); G03C 2200/44 (2013.01); G03C 2200/46 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0274723 A1 19880720; EP 0274723 B1 19901031; CA 1286139 C 19910716; DE 3765921 D1 19901206; JP 2578146 B2 19970205; JP S63197943 A 19880816
DOCDB simple family (application)
EP 87118944 A 19871221; CA 553294 A 19871202; DE 3765921 T 19871221; JP 32417787 A 19871223