Incorporation of hydrophobic photographic additives into hydroph

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...

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430631, G03C 1005

Patent

active

050136399

ABSTRACT:
Aliphatic diesters of alkylenedicarboxylic acid compounds are water-immiscible high-boiling organic solvents useful for dispersing hydrophobic photographic additives in hydrophilic colloid compositioins which are incorporated into light-sensitive silver halide photographic materials.
In particular, said aliphatic diesters of alkylenedicarboxylic acid compounds correspond to the general formula ##STR1## wherein R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10, equal or different, each represents a hydrogen atom or a lower alkyl group, with the proviso that at least one of R.sub.3, R.sub.5, R.sub.7 and R.sub.9 is an alkyl group or at least one pair of R.sub.4 and R.sub.6 or R.sub.8 and R.sub.10 are both alkyl groups and the total number of carbon atoms in R.sub.3, R.sub.4, R.sub.5 and R.sub.6 and the total number of carbon atoms in R.sub.7, R.sub.8, R.sub.9 and R.sub.10 is, each, less than 12, and m is 0 to 10.

REFERENCES:
patent: 3936303 (1976-02-01), Shiba et al.
patent: 4399213 (1983-08-01), Watanabe et al.
patent: 4554247 (1985-11-01), Yamashita et al.
patent: 4857449 (1989-08-01), Ogawa et al.

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