Process for producing dispersion powders
AssigneeWacker Chemie AG
InventorsMichael Herbert, Jochen Ring, Stefan Killat, Bernd Gerstenberger
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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.
Claims12
A process for producing a dispersion powder comprising the steps of spray-drying a quantity of aqueous polymer dispersions and adding a quantity of antiblocking agent in a rotary atomization dryer comprising a dryer tower, wherein the antiblocking agent is conveyed by compressed air, wholly or partly, into an annular gap which is formed by a formed part arranged concentrically around the housing of the rotary atomizer, and which ends at a distance above the upper edge of the atomizer disk of the rotary atomizer.
Dependencies are inferred from the claim text.