Process for incorporating a hydrophobic compound into an aqueous

Details Process for incorporating a hydrophobic compound into an aqueous Process for incorporating a hydrophobic compound into an aqueous

1994-09-07

1995-10-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430546, 430631, 430583, 430584, 430588, G03C 1015

Patent

active

054609372

ABSTRACT:
Hydrophobic compounds, such as photographically useful compounds, are incorporated into an aqueous medium, such as a silver halide emulsion or a photographic coating composition, by forming a solid additive material comprising the hydrophobic compound and a solid hydrophilic material. The solid hydrophilic material is preferably a mixture of a polysaccharide and sorbitol or succinimide. The additive material is prepared by dry powder mixing the solid hydrophobic compound and solid hydrophilic material followed by a process step that heats, expells, and cools the composition to produce a high surface area uniform material having a specific surface area of at least about 10 square centimeters per gram. The additive material can then be dissolved directly and uniformly in the aqueous medium.

REFERENCES:
patent: 3676147 (1976-07-01), Boyer et al.
patent: 4140530 (1979-02-01), Trunley et al.
patent: 4146399 (1979-03-01), Trunley et al.
patent: 4193801 (1980-03-01), Hopwood et al.
patent: 5096492 (1992-03-01), Fuisz

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