Dissolution of Cellulose in Mixed Solvent Systems
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United States of America Patent
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Issued Date -
Apr 2, 2009
app pub date -
Sep 29, 2008
filing date -
Sep 28, 2007
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Abandoned
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Abstract
A method for dissolving cellulose in which the cellulose based raw material is admixed with a mixture of a protic intercrystalline swelling agent and an ionic liquid at a temperature of 25° C. to 180° C. for a time sufficient to dissolve the cellulose based raw material. The molar ratio of protic intercyrstalline swelling agent to ionic liquid may be 0.05 to 1.5 moles of protic intercrystalline swelling agent to 1 mole of ionic liquid.
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