Continuous latex production processes
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United States of America Patent
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Jul 28, 2015
Grant Date -
Oct 9, 2014
app pub date -
Apr 4, 2013
filing date -
Apr 4, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Processes for continuously producing latex emulsions are disclosed. A multi-screw extruder is used for the production of the emulsion. A resin is fed into the extruder, heated, optionally dissolved in a solvent, mixed with a base to neutralize the resin and form particles, then mixed with a surfactant and water to form a phase inverted emulsion (PIE). The PIE may be sent to a distillation column to separate out the solvent, and the resulting latex emulsion is then sent to a receiving tank. These processes are useful for making precursors for toner compositions.
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