Chloride containing emulsion and a process for emulsion...

Details Chloride containing emulsion and a process for emulsion... Chloride containing emulsion and a process for emulsion...

G - Physics

03

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G03C 1/005 (2006.01) G03C 1/047 (2006.01) G03C 1/76 (2006.01) G03C 5/26 (2006.01) G03C 1/07 (2006.01)

Patent

CA 1284051

A CHLORIDE CONTAINING EMULSION AND A PROCESS FOR EMULSION PREPARATION Abstract of the Disclosure The present invention is directed to a process of precipitating for use in photography a high aspect ratio tabular grain emulsion employing a dispersing medium containing a gelatino-peptizer comprised of less than 30 micromoles of methionine per gram and at least a 0.5 molar concentration of chloride ion. A wide range of chloride ion concentrations in the tabular grains can be achieved while avoiding the use of tabular grain thickening ripening agents and synthetic peptizers.

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