Process for the production of dispersions and photographic mater

Details Process for the production of dispersions and photographic mater Process for the production of dispersions and photographic mater

1981-08-12

1983-03-29

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430449, 430512, 430546, 430569, 430607, 430631, G03C 140

Patent

active

043784259

ABSTRACT:
The invention relates to a process for the production of photographic emulsates consisting of dispersions of water-immiscible or water-insoluble particles in aqueous binder solution, characterized in that the entire non-aqueous phase is initially introduced at a temperature above the liquefaction temperatures of the aqueous and non-aqueous phases, after which a relatively small volume of aqueous phase is emulsified continuously or in portions into the non-aqueous phase by known methods and then more aqueous phase is introduced while emulsification is continued in such a quantity that the viscosity of the emulsion passes through a maximum (indicating phase reversal into an emulsion of non-aqueous particles in aqueous dispersion medium (FIG. 1)).

REFERENCES:
patent: 3676142 (1972-07-01), Carpentier et al.
patent: 3788857 (1974-01-01), Van Poucke et al.
patent: 3860425 (1975-01-01), Ono et al.
patent: 4003748 (1977-01-01), Langen et al.

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