Production of silver sulfate grains using a fluorinated...

Details Production of silver sulfate grains using a fluorinated... Production of silver sulfate grains using a fluorinated...

2008-04-11

2010-02-02

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C524S403000, C524S423000

Reexamination Certificate

active

07655212

ABSTRACT:
An aqueous precipitation process for the preparation of particles comprising primarily silver sulfate, comprising reacting an aqueous soluble silver salt and an aqueous soluble source of inorganic sulfate ion in an agitated precipitation reactor vessel and precipitating particles comprising primarily silver sulfate, wherein the reaction and precipitation are performed in the presence of an aqueous soluble fluorinated additive, the amount of additive being a minor molar percentage, relative to the molar amount of silver sulfate precipitated, and effective to result in precipitation of particles comprising primarily silver sulfate having a mean grain-size of less than 50 micrometers.

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