| 摘要 |
Solid particle dispersions of dyes of the formula: [D-(A)y]-Xn where D that comprises an aromatic ring if y is O, A is an aromatic ring bonded directly or indirectly to D, X is a substituent, other than carboxy, having an ionizable proton, either on A or on an aromatic ring portion of D, having a pKa of about 4 to 11 in a 50/50 mixture (volume basis) of ethanol and water, y is 0 to 4, n is 1 to 7, and the compound has a log partition coefficient of from about 0 to 6 when the compound is in unionized form, are disclosed for filter dye layers of photographic elements. They may be coated in layers of photographic elements without a mordant, and they do not wander at coating pH's. At processing pH's, however, they are solubilized for easy removal and/or decolorization.
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