Method for drying particulate polymers
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United States of America Patent
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May 15, 2018
Issued Date -
N/A
app pub date -
Feb 16, 2015
filing date -
Feb 19, 2014
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Abstract
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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