Absorbent sheets prepared with cellulosic microfibers
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United States of America Patent
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Jun 21, 2016
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app pub date -
Feb 2, 2015
filing date -
Mar 21, 2006
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Abstract
An absorbent paper sheet for tissue or towel includes an amount by weight of pulp-derived papermaking fibers, and an amount by weight of fibrillated regenerated cellulosic microfibers prepared from a cellulosic dope of dissolved cellulose comprising a solvent selected from tertiary amine N-oxides, cellulose dissolving imidazolium salts, cellulose dissolving pyridinium salts, cellulose dissolving pyridazinium salts, cellulose dissolving pyrimidinium salts, cellulose dissolving pyrazinium salts, cellulose dissolving pyrazolium salts, cellulose dissolving oxazolium salts, cellulose dissolving 1,2,3-triazolium salts, cellulose dissolving 1,2,4-triazolium salts, cellulose dissolving thiazolium salts, cellulose dissolving piperidinium salts, cellulose dissolving pyrrolidinium salts, cellulose dissolving quinolinium salts, and cellulose dissolving isoquinolinium salts.
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