PROCESS FOR PREPARING CELLULOSE ESTERS

摘要

Disclosed is a process for preparing cellulose esters utilizing an acyl anhydride and trifluoroacetic anhydride as an impelling agent. The invention includes formation of a cellulose triester optionally followed by a hydrolysis step. Additionally, a cellulose ester with a degree of substitution of less than substantially 3 can be prepared directly by the additional use of trifluoroacetic acid.