Method for drying particulate polymers

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United States of America Patent

PATENT NO 9969849
SERIAL NO

15119857

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Abstract

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The present invention relates to a process for drying particulate polymers, comprising the steps of:

    a) providing a particulate polymer comprising from 60 wt % to 90 wt % of at least one solvent based on the total weight of particulate polymer and solvent,b) mechanically predrying the particulate polymer to a content of the at least one solvent of from 20 wt % to 50 wt % based on the total weight of particulate polymer and solvent, wherein the mechanical predrying in step b) is carried out with a roller press, andc) end-drying the particulate polymer to a content of the at least one solvent of from 0 wt % to 15 wt % based on the total weight of particulate polymer and solvent, wherein the particulate polymer is a polymer comprising repeating units of formulae I, II and/or III

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Patent Owner(s)

Patent OwnerAddress
BASF SE67056 LUDWIGSHAFEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Erbes, Joerg Karlsruhe, DE 13 42
Heinz, Robert Ludwigshafen, DE 21 119
Kortekamp, Tobias Mannheim, DE 11 66
Lange, Gerhard Schriesheim, DE 49 457
Linner, Bernhard Bobenheim-Roxheim, DE 4 13
Mueller, Michael Klemens Hassloch, DE 20 22
Schneider, Cecile Frankenthal, DE 7 40
Ulzhoefer, Angela Ludwigshafen, DE 3 11

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