Purification of plasticizers
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United States of America Patent
Stats
-
Aug 18, 2020
Grant Date -
Jan 4, 2018
app pub date -
Jan 5, 2016
filing date -
Jan 16, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Plasticizers are purified by contact with a coalescing filter to effect removal of ions, metals, monohydric alcohols, and polyhydric alcohols. The resulting purified plasticizer compositions are suitable for use in PVC due to their low levels of impurities that reduce PVC utility.
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