Preparation of microcrystalline triacetylcellulose
AssigneeMerck Patent GmbH
InventorsGeorg Seitz, Rainer Wernicke
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Abstract
The preparation of microcrystalline triacetylcellulose by acid-catalyzed acetylation of microcrystalline cellulose, perfluoroalkanesulfonic acids with 1 to 8 carbon atoms are used as the catalyst, resulting in a non-hazardous process and high yields of exceptionally high purity product, the latter being particularly suitable for chromatographic purposes, in particular for the chromatographic resolution of racemates.
Claims6
In a process for the preparation of microcrystalline triacetylcellulose comprising acetylating microcrystalline cellulose in the presence of an acid catalyst, the improvement which comprises employing a catalytic amount of at least one perfluoralkanesulfonic acid having 1-8 carbon atoms as the catalyst.
Dependencies are inferred from the claim text.