Cellulose oxidation by a perfluorinated hydrocarbon solution of nitrogen dioxide
AssigneeJohnson & Johnson Medical, Inc.
InventorsFranklin Boardman, Lowell Saferstein
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Abstract
A process for oxidizing cellulose involves reacting the cellulose with a solution of nitrogen dioxide in a perfluorocarbon solvent. In preferred embodiments, the solvent has a boiling point in the range between about 30.degree. C. and 100.degree. C., the nitrogen dioxide concentration in the solution is in the range between about 2% and 12% by weight, and the reactants are maintained at a temperature between about 25.degree. C. and 60.degree. C. during a reaction time fo at least about 7 hours.
Claims10
A process for oxidizing cellulose comprising the step of reacting the cellulose with an effective amount of a solution of nitrogen dioxide in a perfluorocarbon solvent.
Dependencies are inferred from the claim text.