Silver halide photographic materials comprising specific organic

Details Silver halide photographic materials comprising specific organic Silver halide photographic materials comprising specific organic

1988-03-04

1989-10-17

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430541, 430543, G03C 726, G03C 106

Patent

active

048746886

ABSTRACT:
For incorporation of substantially water-insoluble photographic additives such as couplers into hydrophilic organic colloid layers of silver halide photographic materials, a phthalic acid ester of a formula (I): ##STR1## where R.sub.1 and R.sub.2 may be same or different and each represents a branched alkyl group having no more than 7 carbon atoms, is used so that said additives can effectively be dispersed in the colloid layers. Accordingly, the solubility and dispersibility of the additives is improved; the long-term stability of the additive dispersion is improved, and further and latent image storability and color-forming properties of the photographic material are also improved over the prior art photographic materials.

REFERENCES:
patent: 4451558 (1984-05-01), Sugita et al.
patent: 4731320 (1988-03-01), Sasaki et al.

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