Methods of forming stable dispersions of photographic materials

Details Methods of forming stable dispersions of photographic materials Methods of forming stable dispersions of photographic materials

1989-01-17

1991-02-05

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Stabilizing

430546, 430377, 430449, 430631, 430637, G03C 726, G03C 732

Patent

active

049904310

ABSTRACT:
The invention is performed by providing a first flow of water and surfactant, a second flow comprising solvent, base and photographic material, and mixing said first and second streams and either simultaneously or immediately following thereof neutralizing said streams to prevent hydrolysis of a hydrolyzable surfactant and/or premature precipitation of particles before neutralization. The streams then may be immediately treated for formation into photographic materials. In a preferred method the first and second stream may be brought together immediately prior to a mixer with addition of acid directly into the mixer to neutralize the dispersion of fine particles.

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patent: 4385110 (1983-05-01), Yoneyama et al.
William J. Priest, Research Disclosure 16468, Process for Preparing Stable Aqueous Dispersions of Certain Hydrophobic Materials, (1977), pp. 75-80, 1977 Industrial Opportunities Ltd.

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