Process for producing dispersion powders
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United States of America Patent
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Mar 24, 2015
Grant Date -
Aug 28, 2014
app pub date -
Jul 25, 2012
filing date -
Aug 1, 2011
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Abstract
A process for producing dispersion powders by spray drying of aqueous polymer dispersions and addition of antiblocking agents in a rotary atomization dryer, wherein the antiblocking agent is conveyed by delivery air, wholly or partly, into an annular gap which is formed by a moulding arranged concentrically around the housing of the rotary atomizer, and which ends at a distance above the upper edge of the atomizer plate of the rotary atomizer.
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