Manufacture of cellulose esters: recycle of caustic and/or acid from pre-treatment of pulp
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United States of America Patent
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Issued Date -
Jul 19, 2007
app pub date -
Jan 13, 2006
filing date -
Jan 13, 2006
priority date (Note) -
Abandoned
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Abstract
A process for the manufacture of cellulose esters is described. The process includes the steps of: pre-treating pulp for the removal of impurities with either caustic or acid or both, esterifying the pre-treated pulp, and recycling the caustic or acid or both from the pre-treating step.
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