Process for preparing cellulose esters using a sulfonic acid resin catalyst
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United States of America Patent
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Dec 12, 2000
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N/A
app pub date -
Dec 2, 1996
filing date -
Dec 30, 1994
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Abstract
The present invention relates to a process for preparing cellulose esters having a total DS/AGU of 0.1 to 3.0, said process comprising contacting the following: (i) a cellulose material, (ii) a solubilizing amount of a solvent system comprising a carboxamide diluent or a urea-based diluent, (iii) an acylating reagent, and (iv) an insoluble sulfonic acid resin catalyst.
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