C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
96/130, 260/382,
C09B 23/01 (2006.01) C09B 69/06 (2006.01) G03C 1/12 (2006.01) G03C 1/26 (2006.01)
Patent
CA 2040674
A water-soluble methine compound represented by the following general formula (I): Image (I) (R-COOe)m wherein Z1 and Z2, which may be the same or different, each represents a non-metallic atomic group required for forming a 5-membered or 6-membered nitrogen-containing heterocyclic ring; R1 and R2, which may be the same or different, each represents an alkyl group; Q1 and Q2 each represents an atomic group required, in combina- tion, for forming a 4-thiazolidinone ring, a 5-thiazol- idinone ring, a 4-imidazolidinone ring, a 4-oxazolidin- one ring, a 5-oxazolidinone ring, a 5-imidazolidinone ring or a 4-dithiolanone ring; L1, L2, L3, L4 and L5, which may be the same or different, each represents a methine group; R represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; m repre- sents 1 or 2; i and h each represents 0 or 1; ? represents 1 or 2; and j and k each represents 0, 1, 2 or 3. A photographic silver halide emulsion containing said methine compound added in the form of an aqueous solution is also disclosed.
Koya Keizo
Takei Haruo
Ukai Toshinao
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Fuji Photo Film Co. Ltd.
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