Process for pulse flow double-jet precipitation
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United States of America Patent
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Aug 27, 1996
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app pub date -
Sep 23, 1994
filing date -
Sep 23, 1994
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Abstract
The present invention is a method of manufacturing silver halide grains using a double jet precipitation process. Soluble salt and soluble halide salt are introduced at a high velocity into a well mixing vessel containing silver halide grains for a time t. The introduction is halted for a time T, wherein T>t. No emulsion is removed from the reactor. The present invention provides precise control of the silver halide grain growth and provides improved scaleability.
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