Method of dissolving lignocellulosic materials
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United States of America Patent
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May 24, 2016
Grant Date -
Jun 20, 2013
app pub date -
Jun 23, 2011
filing date -
Jun 23, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
The invention describes solutions containing cellulose and a method of dissolving lignocellulosic materials. In the method, the lignocellulosic material is contacted with a conjugate acid, formed by a strong organic base and a weaker acid, under conditions which are conducive to at least a partial dissolution of the cellulosic components of the lignocellulosic material. It has been found that it is possible to recover at least a portion of the dissolved part of the lignocellulosic material by at least partial dissociation of the conjugate acid. Furthermore it is possible to recover at least a portion of the dissociated organic base and the acid, to form a conjugate acid of the recovered base and acid, and to recycle it for use in the first steps of the method.
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International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08B:POLYSACCHARIDES; DERIVATIVES THEREOF
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....
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